【B15】_考试资料网

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B1】

A．where
B．when
C．that
D．why

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B2】

A．improves
B．fades
C．recovers
D．collapses

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B1】

A．among
B．except
C．despite
D．like

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B3】

A．If
B．Unless
C．Once
D．While

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B2】

A．reflect
B．demand
C．indicate
D．produce

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B4】

A．uneven
B．limited
C．damaging
D．obscure

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B3】

A．stabilizing
B．boosting
C．impairing
D．determining

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B5】

A．wellbeing
B．environment
C．relationship
D．outlook

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B4】

A．transmit
B．sustain
C．evaluate
D．observe

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B6】

A．turns
B．finds
C．points
D．figures

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B5】

A．measurable
B．manageable
C．affordable
D．renewable

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B7】

A．roundabouts
B．responses
C．workouts
D．associations

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B6】

A．In turn
B．In fact
C．In addition
D．In brief

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B8】

A．genre
B．functions
C．circumstances
D．criterion

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B7】

A．opposite
B．impossible
C．average
D．expected

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B9】

A．channel
B．condition
C．sequence
D．process

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B8】

A．hardens
B．weakens
C．tightens
D．relaxes

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B10】

A．persist
B．believe
C．excel
D．feature

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B9】

A．aggravate
B．generate
C．moderate
D．enhance

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B11】

A．Therefore
B．Moreover
C．Otherwise
D．However

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B10】

A．physical
B．mental
C．subconscious
D．internal

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B12】

A．according to
B．regardless of
C．apart from
D．instead of

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B11】

A．Except for
B．According to
C．Due to
D．As for

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B13】

A．back
B．further
C．aside
D．around

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B12】

A．with
B．on
C．in
D．at

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B14】

A．sharpness
B．stability
C．framework
D．flexibility

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B13】

A．unless
B．until
C．if
D．because

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B15】

A．forces
B．reminds
C．hurries
D．allows

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B14】

A．exhausts
B．follows
C．precedes
D．suppresses

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B16】

A．hold
B．track
C．order
D．pace

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B15】

A．into
B．from
C．towards
D．beyond

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B17】

A．to
B．with
C．for
D．on

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B16】

A．fetch
B．bite
C．pick
D．hold

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B18】

A．irregularly
B．habitually
C．constantly
D．unusually

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B17】

A．disappointed
B．excited
C．joyful
D．indifferent

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B19】

A．carry
B．put
C．build
D．take

单项选择题

As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t remember【B1】we put the keys just a moment ago, or an old acquaintance’ s name, or the name of an old band we used to love. As the brain【B2】, we refer to these occurrences as "senior moments." 【B3】seemingly innocent, this loss of mental focus can potentially have a(n)【B4】impact on our professional, social, and personal【B5】. Neuroscientists, experts who study the nervous system, are increasingly showing that there’ s actually a lot that can be done. It【B6】out that the brain needs exercise in much the same way our muscles do, and the right mental【B7】can significantly improve our basic cognitive【B8】. Thinking is essentially a【B9】of making connections in the brain. To a certain extent, our ability to【B10】in making the connections that drive intelligence is inherited.【B11】, because these connections are made through effort and practice, scientists believe that intelligence can expand and fluctuate【B12】mental effort. Now, a new Web-based company has taken it a step【B13】and developed the first "brain training program" designed to actually help people improve and regain their mental【B14】. The Web-based program【B15】you to systematically improve your memory and attention skills. The program keeps【B16】of your progress and provides detailed feedback【B17】your performance and improvement. Most importantly, it【B18】modifies and enhances the games you play to【B19】on the strengths you are developing—much like a (n)【B20】exercise routine requires you to increase resistance and vary your muscle use.【B20】

A．risky
B．effective
C．idle
D．familiar

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B18】

A．adapted
B．catered
C．turned
D．reacted

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B19】

A．suggesting
B．requiring
C．mentioning
D．supposing

单项选择题

Ancient Greek philosopher Aristotle viewed laughter as "a bodily exercise precious to health." But【B1】some claims to the contrary, laughing probably has little influence on physical fitness. Laughter does【B2】short-term changes in the function of the heart and its blood vessels, 【B3】heart rate and oxygen consumption. But because hard laughter is difficult to【B4】, a good laugh is unlikely to have【B5】benefits the way, say, walking or jogging does. 【B6】, instead of straining muscles to build them, as exercise does, laughter apparently accomplishes the【B7】. Studies dating back to the 1930’s indicate that laughter【B8】muscles, decreasing muscle tone for up to 45 minutes after the laugh dies down. Such bodily reaction might conceivably help【B9】the effects of psychological stress. Anyway, the act of laughing probably does produce other types of【B10】feedback that improve an individual’ s emotional state.【B11】one classical theory of emotion, our feelings are partially rooted【B12】physical reactions. It was argued at the end of the 19th century that humans do not cry【B13】they are sad but they become sad when the tears begin to flow. Although sadness also【B14】tears, evidence suggests that emotions can flow【B15】muscular responses. In an experiment published in 1988, social psychologist Fritz Strack of the University of Wu rzburg in Germany asked volunteers to【B16】a pen either with their teeth—thereby creating an artificial smile—or with their lips, which would produce a (n)【B17】expression. Those forced to exercise their smiling muscles【B18】more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown,【B19】that expressions may influence emotions rather than just the other way around.【B20】, the physical act of laughter could improve mood.【B20】

A．Eventually
B．Consequently
C．Similarly
D．Conversely

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