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A. severe B. generally C. treatment D. mistaken E. challenges
F. disapprove G. matter H. rigorous I. magic J. suspected
K. publically L. factors M. faulty N. based O. questioned
Scientists have finally figured out how the key gene tied to obesity makes people fat, a major discovery that could open the door to an entirely new approach to the problem beyond diet and exercise.
Since 2007, researchers have known that a gene called FTO was related to obesity, but they didn"t know how, and could not tie it to appetite or other known 11 .
Now experiments reveal that a 12 version of the gene causes energy from food to be stored as fat. Genetic tinkering in mice and on human cells in the lab suggests this can be reversed, giving hope that a drug or other 13 might be developed to do the same in people.
The discovery 14 the notion that "when people get obese it was basically their own choice because they choose to eat too much or not exercise," said study leader Melina Claussnitzer, a genetics specialist. For the first time, genetics has revealed a mechanism in obesity that was not really 15 before and gives a third explanation or factor that"s involved.
Several obesity drugs are already on the market, but they are 16 used for short-term weight loss and are aimed at the brain and appetite; they don"t directly target metabolism. Researchers can"t guess how long it might take before a drug 17 on the new findings becomes available. But it"s unlikely it would be a 18 pill that would enable people to eat anything they want without packing on the pounds. And targeting this fat pathway could affect other things, so a treatment would need 19 testing to prove safe and effective.
The gene glitch doesn"t explain all obesity. It was found in 44 percent of Europeans but only 5 percent of blacks, so other genes clearly are at work, and food and exercise still 20 .

答案： I[解析] 从词性判断，该空格需要填入形容词。选择依据上下文，尤其是that would enable people t...
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填空题

A．exploited B．impact C．virtual D．entitles
E．Spontaneously F．able G．accessible H．observed
I．perceptive J．appliances K．deserves L．gravitational
M．influence N．capable O．Simultaneously
It has been necessary to refer to the effects of the two world wars in promoting all kinds of innovation. It should be 1 also that technological innovations have transformed the character of war itself by the introduction of new mechanical and chemical devices. One weapon developed during World War Ⅱ 2 a special mention. The principle of rocket propulsions was well known earlier, and its possibilities as a means of achieving speeds sufficient to escape from the Earth"s 3 pull had been pointed out by the Russian and the American scientists. The latter built experimental liquid-fuelled rockets in 1926. 4 , a group of German and Romanian pioneers was working along the same line, and in the 1930s, it was this team who developed a rocket 5 of delivering a warhead hundreds of miles away. Reaching a height of over 100 miles, the V-2 rocket marked the beginning of the space age, and members of its design team were instrumental in both the Soviet and United States space programs after the war.
Technology had a tremendous social 6 in the period 1900-1945. The automobile and electric power, for instance, radically changed both the scale and the quality of 20th-century life, promoting a process of rapid urbanization and a(n) 7 revolution in living through mass production of household goods and 8 . The rapid development of the airplane, the cinema, and radio made the world seem suddenly smaller and more 9 . The development of many products of the chemical industry further transformed the life of most people. In the years following 1945, the constructive and creative opportunities of modem technology could be 10 , although the process has not been without its problems.
答案： H[考点] 考查动词。
本文首句意为“有必要提及两次世界大战对于促进各种创新的影响。”第二句开头部分则说“还应...
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A．principal B．lubricating C．yield D．Crude
E．substitute F．collecting G．surplus H．impractical
I．smelting J．gathering K．produce L．rivaled
M．competed N．petroleum O．Coarse
An important new industry, oil refining, grew after the Civil War. 21 oil, or petroleum, a dark, thick ooze from the earth had been known for hundreds of years, but little use had ever been made of it. In the l850s, Samuel M. Kier, a manufacturer in western Pennsylvania, began 22 the oil and refining it into kerosene. Refining, like 23 , is a process of removing impurities from a raw material.
Kerosene was used to light lamps. It was a cheap 24 for whale oil, which was becoming harder to get. Soon there was a large demand for kerosene. People began to search for new supplies of 25 .
The first oil well was drilled by E. L. Drake, a retired railroad conductor. In 1859 he began drilling in Titusville, Pennsylvania. The whole venture of drilling seemed so 26 and foolish that onlookers called it "Drake"s Folly". But when he had drilled down about 70 feet (21 meters), Drake struck oil. His well began to 27 20 barrels of crude oil a day.
News of Drake"s success brought oil prospectors to the scene. By the early 1860s these wildcatters were drilling for "black gold" all over western Pennsylvania. The boom 28 the California gold rush of 1848 in its excitement and Wild West atmosphere. And it brought far more wealth to the prospectors than any gold rush.
Petroleum could be refined into many products. For some years kerosene continued to be the 29 one. It was sold in grocery stores and door-to-door. In the 1880s and 1890s refiners learned how to make other petroleum products such as waxes and 30 oil. Petroleum was not then used to make gasoline or heating oil.
答案： D[考点] 考查形容词。
空格处所填词位于句首，首字母需大写。根据oil后面的描述：“一种深色的、黏稠的渗出物...
填空题

A. severe B. generally C. treatment D. mistaken E. challenges
F. disapprove G. matter H. rigorous I. magic J. suspected
K. publically L. factors M. faulty N. based O. questioned
Scientists have finally figured out how the key gene tied to obesity makes people fat, a major discovery that could open the door to an entirely new approach to the problem beyond diet and exercise.
Since 2007, researchers have known that a gene called FTO was related to obesity, but they didn"t know how, and could not tie it to appetite or other known 11 .
Now experiments reveal that a 12 version of the gene causes energy from food to be stored as fat. Genetic tinkering in mice and on human cells in the lab suggests this can be reversed, giving hope that a drug or other 13 might be developed to do the same in people.
The discovery 14 the notion that "when people get obese it was basically their own choice because they choose to eat too much or not exercise," said study leader Melina Claussnitzer, a genetics specialist. For the first time, genetics has revealed a mechanism in obesity that was not really 15 before and gives a third explanation or factor that"s involved.
Several obesity drugs are already on the market, but they are 16 used for short-term weight loss and are aimed at the brain and appetite; they don"t directly target metabolism. Researchers can"t guess how long it might take before a drug 17 on the new findings becomes available. But it"s unlikely it would be a 18 pill that would enable people to eat anything they want without packing on the pounds. And targeting this fat pathway could affect other things, so a treatment would need 19 testing to prove safe and effective.
The gene glitch doesn"t explain all obesity. It was found in 44 percent of Europeans but only 5 percent of blacks, so other genes clearly are at work, and food and exercise still 20 .
答案： L[解析] 从词性判断，该空格需要填入名词。依据上下文，即第一段对肥胖基因研究发现的论述，选择factors，表示“因素...
填空题

A．principal B．lubricating C．yield D．Crude
E．substitute F．collecting G．surplus H．impractical
I．smelting J．gathering K．produce L．rivaled
M．competed N．petroleum O．Coarse
An important new industry, oil refining, grew after the Civil War. 21 oil, or petroleum, a dark, thick ooze from the earth had been known for hundreds of years, but little use had ever been made of it. In the l850s, Samuel M. Kier, a manufacturer in western Pennsylvania, began 22 the oil and refining it into kerosene. Refining, like 23 , is a process of removing impurities from a raw material.
Kerosene was used to light lamps. It was a cheap 24 for whale oil, which was becoming harder to get. Soon there was a large demand for kerosene. People began to search for new supplies of 25 .
The first oil well was drilled by E. L. Drake, a retired railroad conductor. In 1859 he began drilling in Titusville, Pennsylvania. The whole venture of drilling seemed so 26 and foolish that onlookers called it "Drake"s Folly". But when he had drilled down about 70 feet (21 meters), Drake struck oil. His well began to 27 20 barrels of crude oil a day.
News of Drake"s success brought oil prospectors to the scene. By the early 1860s these wildcatters were drilling for "black gold" all over western Pennsylvania. The boom 28 the California gold rush of 1848 in its excitement and Wild West atmosphere. And it brought far more wealth to the prospectors than any gold rush.
Petroleum could be refined into many products. For some years kerosene continued to be the 29 one. It was sold in grocery stores and door-to-door. In the 1880s and 1890s refiners learned how to make other petroleum products such as waxes and 30 oil. Petroleum was not then used to make gasoline or heating oil.
答案： F[考点] 考查动词。
在本句中，and连接______the oil和refining it into ke...
填空题

A．exploited B．impact C．virtual D．entitles
E．Spontaneously F．able G．accessible H．observed
I．perceptive J．appliances K．deserves L．gravitational
M．influence N．capable O．Simultaneously
It has been necessary to refer to the effects of the two world wars in promoting all kinds of innovation. It should be 1 also that technological innovations have transformed the character of war itself by the introduction of new mechanical and chemical devices. One weapon developed during World War Ⅱ 2 a special mention. The principle of rocket propulsions was well known earlier, and its possibilities as a means of achieving speeds sufficient to escape from the Earth"s 3 pull had been pointed out by the Russian and the American scientists. The latter built experimental liquid-fuelled rockets in 1926. 4 , a group of German and Romanian pioneers was working along the same line, and in the 1930s, it was this team who developed a rocket 5 of delivering a warhead hundreds of miles away. Reaching a height of over 100 miles, the V-2 rocket marked the beginning of the space age, and members of its design team were instrumental in both the Soviet and United States space programs after the war.
Technology had a tremendous social 6 in the period 1900-1945. The automobile and electric power, for instance, radically changed both the scale and the quality of 20th-century life, promoting a process of rapid urbanization and a(n) 7 revolution in living through mass production of household goods and 8 . The rapid development of the airplane, the cinema, and radio made the world seem suddenly smaller and more 9 . The development of many products of the chemical industry further transformed the life of most people. In the years following 1945, the constructive and creative opportunities of modem technology could be 10 , although the process has not been without its problems.
答案： K[考点] 考查动词。
通过分析句子结构可知，空格处应该填一个第三人称单数形式的动词作谓语。符合条件的选项有D...
填空题

A. severe B. generally C. treatment D. mistaken E. challenges
F. disapprove G. matter H. rigorous I. magic J. suspected
K. publically L. factors M. faulty N. based O. questioned
Scientists have finally figured out how the key gene tied to obesity makes people fat, a major discovery that could open the door to an entirely new approach to the problem beyond diet and exercise.
Since 2007, researchers have known that a gene called FTO was related to obesity, but they didn"t know how, and could not tie it to appetite or other known 11 .
Now experiments reveal that a 12 version of the gene causes energy from food to be stored as fat. Genetic tinkering in mice and on human cells in the lab suggests this can be reversed, giving hope that a drug or other 13 might be developed to do the same in people.
The discovery 14 the notion that "when people get obese it was basically their own choice because they choose to eat too much or not exercise," said study leader Melina Claussnitzer, a genetics specialist. For the first time, genetics has revealed a mechanism in obesity that was not really 15 before and gives a third explanation or factor that"s involved.
Several obesity drugs are already on the market, but they are 16 used for short-term weight loss and are aimed at the brain and appetite; they don"t directly target metabolism. Researchers can"t guess how long it might take before a drug 17 on the new findings becomes available. But it"s unlikely it would be a 18 pill that would enable people to eat anything they want without packing on the pounds. And targeting this fat pathway could affect other things, so a treatment would need 19 testing to prove safe and effective.
The gene glitch doesn"t explain all obesity. It was found in 44 percent of Europeans but only 5 percent of blacks, so other genes clearly are at work, and food and exercise still 20 .
答案： M[解析] 从词性判断，该空格需要填入形容词。选择faulty有两个依据：1.上文第一段对肥胖基因研究发现的论述，以及下...
填空题

A．exploited B．impact C．virtual D．entitles
E．Spontaneously F．able G．accessible H．observed
I．perceptive J．appliances K．deserves L．gravitational
M．influence N．capable O．Simultaneously
It has been necessary to refer to the effects of the two world wars in promoting all kinds of innovation. It should be 1 also that technological innovations have transformed the character of war itself by the introduction of new mechanical and chemical devices. One weapon developed during World War Ⅱ 2 a special mention. The principle of rocket propulsions was well known earlier, and its possibilities as a means of achieving speeds sufficient to escape from the Earth"s 3 pull had been pointed out by the Russian and the American scientists. The latter built experimental liquid-fuelled rockets in 1926. 4 , a group of German and Romanian pioneers was working along the same line, and in the 1930s, it was this team who developed a rocket 5 of delivering a warhead hundreds of miles away. Reaching a height of over 100 miles, the V-2 rocket marked the beginning of the space age, and members of its design team were instrumental in both the Soviet and United States space programs after the war.
Technology had a tremendous social 6 in the period 1900-1945. The automobile and electric power, for instance, radically changed both the scale and the quality of 20th-century life, promoting a process of rapid urbanization and a(n) 7 revolution in living through mass production of household goods and 8 . The rapid development of the airplane, the cinema, and radio made the world seem suddenly smaller and more 9 . The development of many products of the chemical industry further transformed the life of most people. In the years following 1945, the constructive and creative opportunities of modem technology could be 10 , although the process has not been without its problems.
答案： L[考点] 考查形容词。
此处意为“火箭推进器的原理早已为人所知，它通过达到足够快的速度以脱离地球______...
填空题

A．principal B．lubricating C．yield D．Crude
E．substitute F．collecting G．surplus H．impractical
I．smelting J．gathering K．produce L．rivaled
M．competed N．petroleum O．Coarse
An important new industry, oil refining, grew after the Civil War. 21 oil, or petroleum, a dark, thick ooze from the earth had been known for hundreds of years, but little use had ever been made of it. In the l850s, Samuel M. Kier, a manufacturer in western Pennsylvania, began 22 the oil and refining it into kerosene. Refining, like 23 , is a process of removing impurities from a raw material.
Kerosene was used to light lamps. It was a cheap 24 for whale oil, which was becoming harder to get. Soon there was a large demand for kerosene. People began to search for new supplies of 25 .
The first oil well was drilled by E. L. Drake, a retired railroad conductor. In 1859 he began drilling in Titusville, Pennsylvania. The whole venture of drilling seemed so 26 and foolish that onlookers called it "Drake"s Folly". But when he had drilled down about 70 feet (21 meters), Drake struck oil. His well began to 27 20 barrels of crude oil a day.
News of Drake"s success brought oil prospectors to the scene. By the early 1860s these wildcatters were drilling for "black gold" all over western Pennsylvania. The boom 28 the California gold rush of 1848 in its excitement and Wild West atmosphere. And it brought far more wealth to the prospectors than any gold rush.
Petroleum could be refined into many products. For some years kerosene continued to be the 29 one. It was sold in grocery stores and door-to-door. In the 1880s and 1890s refiners learned how to make other petroleum products such as waxes and 30 oil. Petroleum was not then used to make gasoline or heating oil.
答案： I[考点] 考查名词。
本句意为“与______一样，石油提炼是从原材料中除去杂质的过程。”由like(像，和...
填空题

A. severe B. generally C. treatment D. mistaken E. challenges
F. disapprove G. matter H. rigorous I. magic J. suspected
K. publically L. factors M. faulty N. based O. questioned
Scientists have finally figured out how the key gene tied to obesity makes people fat, a major discovery that could open the door to an entirely new approach to the problem beyond diet and exercise.
Since 2007, researchers have known that a gene called FTO was related to obesity, but they didn"t know how, and could not tie it to appetite or other known 11 .
Now experiments reveal that a 12 version of the gene causes energy from food to be stored as fat. Genetic tinkering in mice and on human cells in the lab suggests this can be reversed, giving hope that a drug or other 13 might be developed to do the same in people.
The discovery 14 the notion that "when people get obese it was basically their own choice because they choose to eat too much or not exercise," said study leader Melina Claussnitzer, a genetics specialist. For the first time, genetics has revealed a mechanism in obesity that was not really 15 before and gives a third explanation or factor that"s involved.
Several obesity drugs are already on the market, but they are 16 used for short-term weight loss and are aimed at the brain and appetite; they don"t directly target metabolism. Researchers can"t guess how long it might take before a drug 17 on the new findings becomes available. But it"s unlikely it would be a 18 pill that would enable people to eat anything they want without packing on the pounds. And targeting this fat pathway could affect other things, so a treatment would need 19 testing to prove safe and effective.
The gene glitch doesn"t explain all obesity. It was found in 44 percent of Europeans but only 5 percent of blacks, so other genes clearly are at work, and food and exercise still 20 .
答案： C[解析] 从词性判断，该空格需要填入名词。依据上下文，尤其是与其相并列的名词drug，选择treatment，表示“治...
填空题

A．exploited B．impact C．virtual D．entitles
E．Spontaneously F．able G．accessible H．observed
I．perceptive J．appliances K．deserves L．gravitational
M．influence N．capable O．Simultaneously
It has been necessary to refer to the effects of the two world wars in promoting all kinds of innovation. It should be 1 also that technological innovations have transformed the character of war itself by the introduction of new mechanical and chemical devices. One weapon developed during World War Ⅱ 2 a special mention. The principle of rocket propulsions was well known earlier, and its possibilities as a means of achieving speeds sufficient to escape from the Earth"s 3 pull had been pointed out by the Russian and the American scientists. The latter built experimental liquid-fuelled rockets in 1926. 4 , a group of German and Romanian pioneers was working along the same line, and in the 1930s, it was this team who developed a rocket 5 of delivering a warhead hundreds of miles away. Reaching a height of over 100 miles, the V-2 rocket marked the beginning of the space age, and members of its design team were instrumental in both the Soviet and United States space programs after the war.
Technology had a tremendous social 6 in the period 1900-1945. The automobile and electric power, for instance, radically changed both the scale and the quality of 20th-century life, promoting a process of rapid urbanization and a(n) 7 revolution in living through mass production of household goods and 8 . The rapid development of the airplane, the cinema, and radio made the world seem suddenly smaller and more 9 . The development of many products of the chemical industry further transformed the life of most people. In the years following 1945, the constructive and creative opportunities of modem technology could be 10 , although the process has not been without its problems.
答案： O[考点] 考查副词。
空格后是逗号，可知此处应填一个副词，且首字母大写。前一句中说，美国科学家在1926年研...
填空题

A．principal B．lubricating C．yield D．Crude
E．substitute F．collecting G．surplus H．impractical
I．smelting J．gathering K．produce L．rivaled
M．competed N．petroleum O．Coarse
An important new industry, oil refining, grew after the Civil War. 21 oil, or petroleum, a dark, thick ooze from the earth had been known for hundreds of years, but little use had ever been made of it. In the l850s, Samuel M. Kier, a manufacturer in western Pennsylvania, began 22 the oil and refining it into kerosene. Refining, like 23 , is a process of removing impurities from a raw material.
Kerosene was used to light lamps. It was a cheap 24 for whale oil, which was becoming harder to get. Soon there was a large demand for kerosene. People began to search for new supplies of 25 .
The first oil well was drilled by E. L. Drake, a retired railroad conductor. In 1859 he began drilling in Titusville, Pennsylvania. The whole venture of drilling seemed so 26 and foolish that onlookers called it "Drake"s Folly". But when he had drilled down about 70 feet (21 meters), Drake struck oil. His well began to 27 20 barrels of crude oil a day.
News of Drake"s success brought oil prospectors to the scene. By the early 1860s these wildcatters were drilling for "black gold" all over western Pennsylvania. The boom 28 the California gold rush of 1848 in its excitement and Wild West atmosphere. And it brought far more wealth to the prospectors than any gold rush.
Petroleum could be refined into many products. For some years kerosene continued to be the 29 one. It was sold in grocery stores and door-to-door. In the 1880s and 1890s refiners learned how to make other petroleum products such as waxes and 30 oil. Petroleum was not then used to make gasoline or heating oil.
答案： E[考点] 考查名词。
该句意为“它是鲸油的一种便宜的______，而鲸油正变得越来越难以获得。”根据上下文和...
填空题

A. severe B. generally C. treatment D. mistaken E. challenges
F. disapprove G. matter H. rigorous I. magic J. suspected
K. publically L. factors M. faulty N. based O. questioned
Scientists have finally figured out how the key gene tied to obesity makes people fat, a major discovery that could open the door to an entirely new approach to the problem beyond diet and exercise.
Since 2007, researchers have known that a gene called FTO was related to obesity, but they didn"t know how, and could not tie it to appetite or other known 11 .
Now experiments reveal that a 12 version of the gene causes energy from food to be stored as fat. Genetic tinkering in mice and on human cells in the lab suggests this can be reversed, giving hope that a drug or other 13 might be developed to do the same in people.
The discovery 14 the notion that "when people get obese it was basically their own choice because they choose to eat too much or not exercise," said study leader Melina Claussnitzer, a genetics specialist. For the first time, genetics has revealed a mechanism in obesity that was not really 15 before and gives a third explanation or factor that"s involved.
Several obesity drugs are already on the market, but they are 16 used for short-term weight loss and are aimed at the brain and appetite; they don"t directly target metabolism. Researchers can"t guess how long it might take before a drug 17 on the new findings becomes available. But it"s unlikely it would be a 18 pill that would enable people to eat anything they want without packing on the pounds. And targeting this fat pathway could affect other things, so a treatment would need 19 testing to prove safe and effective.
The gene glitch doesn"t explain all obesity. It was found in 44 percent of Europeans but only 5 percent of blacks, so other genes clearly are at work, and food and exercise still 20 .
答案： E[解析] 从词性判断，该空格需要填入动词(第三人称单数形式)。依据上文，即第一段对肥胖基因研究新发现的论述，以及下文g...
填空题

A．exploited B．impact C．virtual D．entitles
E．Spontaneously F．able G．accessible H．observed
I．perceptive J．appliances K．deserves L．gravitational
M．influence N．capable O．Simultaneously
It has been necessary to refer to the effects of the two world wars in promoting all kinds of innovation. It should be 1 also that technological innovations have transformed the character of war itself by the introduction of new mechanical and chemical devices. One weapon developed during World War Ⅱ 2 a special mention. The principle of rocket propulsions was well known earlier, and its possibilities as a means of achieving speeds sufficient to escape from the Earth"s 3 pull had been pointed out by the Russian and the American scientists. The latter built experimental liquid-fuelled rockets in 1926. 4 , a group of German and Romanian pioneers was working along the same line, and in the 1930s, it was this team who developed a rocket 5 of delivering a warhead hundreds of miles away. Reaching a height of over 100 miles, the V-2 rocket marked the beginning of the space age, and members of its design team were instrumental in both the Soviet and United States space programs after the war.
Technology had a tremendous social 6 in the period 1900-1945. The automobile and electric power, for instance, radically changed both the scale and the quality of 20th-century life, promoting a process of rapid urbanization and a(n) 7 revolution in living through mass production of household goods and 8 . The rapid development of the airplane, the cinema, and radio made the world seem suddenly smaller and more 9 . The development of many products of the chemical industry further transformed the life of most people. In the years following 1945, the constructive and creative opportunities of modem technology could be 10 , although the process has not been without its problems.
答案： N[考点] 考查形容词。
根据句子结构判断空格处应填形容词，且与空格后的介词of构成搭配，与其后的部分共同作r...
填空题

A．principal B．lubricating C．yield D．Crude
E．substitute F．collecting G．surplus H．impractical
I．smelting J．gathering K．produce L．rivaled
M．competed N．petroleum O．Coarse
An important new industry, oil refining, grew after the Civil War. 21 oil, or petroleum, a dark, thick ooze from the earth had been known for hundreds of years, but little use had ever been made of it. In the l850s, Samuel M. Kier, a manufacturer in western Pennsylvania, began 22 the oil and refining it into kerosene. Refining, like 23 , is a process of removing impurities from a raw material.
Kerosene was used to light lamps. It was a cheap 24 for whale oil, which was becoming harder to get. Soon there was a large demand for kerosene. People began to search for new supplies of 25 .
The first oil well was drilled by E. L. Drake, a retired railroad conductor. In 1859 he began drilling in Titusville, Pennsylvania. The whole venture of drilling seemed so 26 and foolish that onlookers called it "Drake"s Folly". But when he had drilled down about 70 feet (21 meters), Drake struck oil. His well began to 27 20 barrels of crude oil a day.
News of Drake"s success brought oil prospectors to the scene. By the early 1860s these wildcatters were drilling for "black gold" all over western Pennsylvania. The boom 28 the California gold rush of 1848 in its excitement and Wild West atmosphere. And it brought far more wealth to the prospectors than any gold rush.
Petroleum could be refined into many products. For some years kerosene continued to be the 29 one. It was sold in grocery stores and door-to-door. In the 1880s and 1890s refiners learned how to make other petroleum products such as waxes and 30 oil. Petroleum was not then used to make gasoline or heating oil.
答案： N[考点] 考查名词。
本句意为“人们开始寻找新的______供应。”由前一句可知，空格处所填单词应为一个表示...
填空题

A. severe B. generally C. treatment D. mistaken E. challenges
F. disapprove G. matter H. rigorous I. magic J. suspected
K. publically L. factors M. faulty N. based O. questioned
Scientists have finally figured out how the key gene tied to obesity makes people fat, a major discovery that could open the door to an entirely new approach to the problem beyond diet and exercise.
Since 2007, researchers have known that a gene called FTO was related to obesity, but they didn"t know how, and could not tie it to appetite or other known 11 .
Now experiments reveal that a 12 version of the gene causes energy from food to be stored as fat. Genetic tinkering in mice and on human cells in the lab suggests this can be reversed, giving hope that a drug or other 13 might be developed to do the same in people.
The discovery 14 the notion that "when people get obese it was basically their own choice because they choose to eat too much or not exercise," said study leader Melina Claussnitzer, a genetics specialist. For the first time, genetics has revealed a mechanism in obesity that was not really 15 before and gives a third explanation or factor that"s involved.
Several obesity drugs are already on the market, but they are 16 used for short-term weight loss and are aimed at the brain and appetite; they don"t directly target metabolism. Researchers can"t guess how long it might take before a drug 17 on the new findings becomes available. But it"s unlikely it would be a 18 pill that would enable people to eat anything they want without packing on the pounds. And targeting this fat pathway could affect other things, so a treatment would need 19 testing to prove safe and effective.
The gene glitch doesn"t explain all obesity. It was found in 44 percent of Europeans but only 5 percent of blacks, so other genes clearly are at work, and food and exercise still 20 .
答案： J[解析] 从词性判断，该空格需要填入动词ed形式。选择suspected有两个依据：1.下文提及的gives a th...
填空题

A．exploited B．impact C．virtual D．entitles
E．Spontaneously F．able G．accessible H．observed
I．perceptive J．appliances K．deserves L．gravitational
M．influence N．capable O．Simultaneously
It has been necessary to refer to the effects of the two world wars in promoting all kinds of innovation. It should be 1 also that technological innovations have transformed the character of war itself by the introduction of new mechanical and chemical devices. One weapon developed during World War Ⅱ 2 a special mention. The principle of rocket propulsions was well known earlier, and its possibilities as a means of achieving speeds sufficient to escape from the Earth"s 3 pull had been pointed out by the Russian and the American scientists. The latter built experimental liquid-fuelled rockets in 1926. 4 , a group of German and Romanian pioneers was working along the same line, and in the 1930s, it was this team who developed a rocket 5 of delivering a warhead hundreds of miles away. Reaching a height of over 100 miles, the V-2 rocket marked the beginning of the space age, and members of its design team were instrumental in both the Soviet and United States space programs after the war.
Technology had a tremendous social 6 in the period 1900-1945. The automobile and electric power, for instance, radically changed both the scale and the quality of 20th-century life, promoting a process of rapid urbanization and a(n) 7 revolution in living through mass production of household goods and 8 . The rapid development of the airplane, the cinema, and radio made the world seem suddenly smaller and more 9 . The development of many products of the chemical industry further transformed the life of most people. In the years following 1945, the constructive and creative opportunities of modem technology could be 10 , although the process has not been without its problems.
答案： B[考点] 考查名词。
该句意为“技术在1900-1945年期间有着巨大的社会______。”由此可知应填入一...
填空题

A．principal B．lubricating C．yield D．Crude
E．substitute F．collecting G．surplus H．impractical
I．smelting J．gathering K．produce L．rivaled
M．competed N．petroleum O．Coarse
An important new industry, oil refining, grew after the Civil War. 21 oil, or petroleum, a dark, thick ooze from the earth had been known for hundreds of years, but little use had ever been made of it. In the l850s, Samuel M. Kier, a manufacturer in western Pennsylvania, began 22 the oil and refining it into kerosene. Refining, like 23 , is a process of removing impurities from a raw material.
Kerosene was used to light lamps. It was a cheap 24 for whale oil, which was becoming harder to get. Soon there was a large demand for kerosene. People began to search for new supplies of 25 .
The first oil well was drilled by E. L. Drake, a retired railroad conductor. In 1859 he began drilling in Titusville, Pennsylvania. The whole venture of drilling seemed so 26 and foolish that onlookers called it "Drake"s Folly". But when he had drilled down about 70 feet (21 meters), Drake struck oil. His well began to 27 20 barrels of crude oil a day.
News of Drake"s success brought oil prospectors to the scene. By the early 1860s these wildcatters were drilling for "black gold" all over western Pennsylvania. The boom 28 the California gold rush of 1848 in its excitement and Wild West atmosphere. And it brought far more wealth to the prospectors than any gold rush.
Petroleum could be refined into many products. For some years kerosene continued to be the 29 one. It was sold in grocery stores and door-to-door. In the 1880s and 1890s refiners learned how to make other petroleum products such as waxes and 30 oil. Petroleum was not then used to make gasoline or heating oil.
答案： H[考点] 考查形容词。
该句意为“整个采油的过程看起来是如此的______和愚蠢，以至于旁观者称之为‘德雷克...
填空题

A. severe B. generally C. treatment D. mistaken E. challenges
F. disapprove G. matter H. rigorous I. magic J. suspected
K. publically L. factors M. faulty N. based O. questioned
Scientists have finally figured out how the key gene tied to obesity makes people fat, a major discovery that could open the door to an entirely new approach to the problem beyond diet and exercise.
Since 2007, researchers have known that a gene called FTO was related to obesity, but they didn"t know how, and could not tie it to appetite or other known 11 .
Now experiments reveal that a 12 version of the gene causes energy from food to be stored as fat. Genetic tinkering in mice and on human cells in the lab suggests this can be reversed, giving hope that a drug or other 13 might be developed to do the same in people.
The discovery 14 the notion that "when people get obese it was basically their own choice because they choose to eat too much or not exercise," said study leader Melina Claussnitzer, a genetics specialist. For the first time, genetics has revealed a mechanism in obesity that was not really 15 before and gives a third explanation or factor that"s involved.
Several obesity drugs are already on the market, but they are 16 used for short-term weight loss and are aimed at the brain and appetite; they don"t directly target metabolism. Researchers can"t guess how long it might take before a drug 17 on the new findings becomes available. But it"s unlikely it would be a 18 pill that would enable people to eat anything they want without packing on the pounds. And targeting this fat pathway could affect other things, so a treatment would need 19 testing to prove safe and effective.
The gene glitch doesn"t explain all obesity. It was found in 44 percent of Europeans but only 5 percent of blacks, so other genes clearly are at work, and food and exercise still 20 .
答案： B[解析] 从词性判断，该空格需要填入动词修饰语，很可能是副词。选项包括generally和publically。pub...
填空题

A．exploited B．impact C．virtual D．entitles
E．Spontaneously F．able G．accessible H．observed
I．perceptive J．appliances K．deserves L．gravitational
M．influence N．capable O．Simultaneously
It has been necessary to refer to the effects of the two world wars in promoting all kinds of innovation. It should be 1 also that technological innovations have transformed the character of war itself by the introduction of new mechanical and chemical devices. One weapon developed during World War Ⅱ 2 a special mention. The principle of rocket propulsions was well known earlier, and its possibilities as a means of achieving speeds sufficient to escape from the Earth"s 3 pull had been pointed out by the Russian and the American scientists. The latter built experimental liquid-fuelled rockets in 1926. 4 , a group of German and Romanian pioneers was working along the same line, and in the 1930s, it was this team who developed a rocket 5 of delivering a warhead hundreds of miles away. Reaching a height of over 100 miles, the V-2 rocket marked the beginning of the space age, and members of its design team were instrumental in both the Soviet and United States space programs after the war.
Technology had a tremendous social 6 in the period 1900-1945. The automobile and electric power, for instance, radically changed both the scale and the quality of 20th-century life, promoting a process of rapid urbanization and a(n) 7 revolution in living through mass production of household goods and 8 . The rapid development of the airplane, the cinema, and radio made the world seem suddenly smaller and more 9 . The development of many products of the chemical industry further transformed the life of most people. In the years following 1945, the constructive and creative opportunities of modem technology could be 10 , although the process has not been without its problems.
答案： C[考点] 考查形容词。
该句意为“例如，汽车和电力从根本上改变了20世纪生活的规模和质量，并且促进了快速城市...
填空题

A．principal B．lubricating C．yield D．Crude
E．substitute F．collecting G．surplus H．impractical
I．smelting J．gathering K．produce L．rivaled
M．competed N．petroleum O．Coarse
An important new industry, oil refining, grew after the Civil War. 21 oil, or petroleum, a dark, thick ooze from the earth had been known for hundreds of years, but little use had ever been made of it. In the l850s, Samuel M. Kier, a manufacturer in western Pennsylvania, began 22 the oil and refining it into kerosene. Refining, like 23 , is a process of removing impurities from a raw material.
Kerosene was used to light lamps. It was a cheap 24 for whale oil, which was becoming harder to get. Soon there was a large demand for kerosene. People began to search for new supplies of 25 .
The first oil well was drilled by E. L. Drake, a retired railroad conductor. In 1859 he began drilling in Titusville, Pennsylvania. The whole venture of drilling seemed so 26 and foolish that onlookers called it "Drake"s Folly". But when he had drilled down about 70 feet (21 meters), Drake struck oil. His well began to 27 20 barrels of crude oil a day.
News of Drake"s success brought oil prospectors to the scene. By the early 1860s these wildcatters were drilling for "black gold" all over western Pennsylvania. The boom 28 the California gold rush of 1848 in its excitement and Wild West atmosphere. And it brought far more wealth to the prospectors than any gold rush.
Petroleum could be refined into many products. For some years kerosene continued to be the 29 one. It was sold in grocery stores and door-to-door. In the 1880s and 1890s refiners learned how to make other petroleum products such as waxes and 30 oil. Petroleum was not then used to make gasoline or heating oil.
答案： C[考点] 考查动词。
根据上下文，此处意为“他的油井开始每天产20桶原油”，原油是直接被开采出来的，并不需要...
填空题

A．exploited B．impact C．virtual D．entitles
E．Spontaneously F．able G．accessible H．observed
I．perceptive J．appliances K．deserves L．gravitational
M．influence N．capable O．Simultaneously
It has been necessary to refer to the effects of the two world wars in promoting all kinds of innovation. It should be 1 also that technological innovations have transformed the character of war itself by the introduction of new mechanical and chemical devices. One weapon developed during World War Ⅱ 2 a special mention. The principle of rocket propulsions was well known earlier, and its possibilities as a means of achieving speeds sufficient to escape from the Earth"s 3 pull had been pointed out by the Russian and the American scientists. The latter built experimental liquid-fuelled rockets in 1926. 4 , a group of German and Romanian pioneers was working along the same line, and in the 1930s, it was this team who developed a rocket 5 of delivering a warhead hundreds of miles away. Reaching a height of over 100 miles, the V-2 rocket marked the beginning of the space age, and members of its design team were instrumental in both the Soviet and United States space programs after the war.
Technology had a tremendous social 6 in the period 1900-1945. The automobile and electric power, for instance, radically changed both the scale and the quality of 20th-century life, promoting a process of rapid urbanization and a(n) 7 revolution in living through mass production of household goods and 8 . The rapid development of the airplane, the cinema, and radio made the world seem suddenly smaller and more 9 . The development of many products of the chemical industry further transformed the life of most people. In the years following 1945, the constructive and creative opportunities of modem technology could be 10 , although the process has not been without its problems.
答案： J[考点] 考查名词。
空格前为并列连词and，因此空格处所选单词应与goods(商品)构成并列关系，共同被h...
填空题

A. severe B. generally C. treatment D. mistaken E. challenges
F. disapprove G. matter H. rigorous I. magic J. suspected
K. publically L. factors M. faulty N. based O. questioned
Scientists have finally figured out how the key gene tied to obesity makes people fat, a major discovery that could open the door to an entirely new approach to the problem beyond diet and exercise.
Since 2007, researchers have known that a gene called FTO was related to obesity, but they didn"t know how, and could not tie it to appetite or other known 11 .
Now experiments reveal that a 12 version of the gene causes energy from food to be stored as fat. Genetic tinkering in mice and on human cells in the lab suggests this can be reversed, giving hope that a drug or other 13 might be developed to do the same in people.
The discovery 14 the notion that "when people get obese it was basically their own choice because they choose to eat too much or not exercise," said study leader Melina Claussnitzer, a genetics specialist. For the first time, genetics has revealed a mechanism in obesity that was not really 15 before and gives a third explanation or factor that"s involved.
Several obesity drugs are already on the market, but they are 16 used for short-term weight loss and are aimed at the brain and appetite; they don"t directly target metabolism. Researchers can"t guess how long it might take before a drug 17 on the new findings becomes available. But it"s unlikely it would be a 18 pill that would enable people to eat anything they want without packing on the pounds. And targeting this fat pathway could affect other things, so a treatment would need 19 testing to prove safe and effective.
The gene glitch doesn"t explain all obesity. It was found in 44 percent of Europeans but only 5 percent of blacks, so other genes clearly are at work, and food and exercise still 20 .
答案： N[解析] 选择依据上下文，尤其是依据介词on。
填空题

A．principal B．lubricating C．yield D．Crude
E．substitute F．collecting G．surplus H．impractical
I．smelting J．gathering K．produce L．rivaled
M．competed N．petroleum O．Coarse
An important new industry, oil refining, grew after the Civil War. 21 oil, or petroleum, a dark, thick ooze from the earth had been known for hundreds of years, but little use had ever been made of it. In the l850s, Samuel M. Kier, a manufacturer in western Pennsylvania, began 22 the oil and refining it into kerosene. Refining, like 23 , is a process of removing impurities from a raw material.
Kerosene was used to light lamps. It was a cheap 24 for whale oil, which was becoming harder to get. Soon there was a large demand for kerosene. People began to search for new supplies of 25 .
The first oil well was drilled by E. L. Drake, a retired railroad conductor. In 1859 he began drilling in Titusville, Pennsylvania. The whole venture of drilling seemed so 26 and foolish that onlookers called it "Drake"s Folly". But when he had drilled down about 70 feet (21 meters), Drake struck oil. His well began to 27 20 barrels of crude oil a day.
News of Drake"s success brought oil prospectors to the scene. By the early 1860s these wildcatters were drilling for "black gold" all over western Pennsylvania. The boom 28 the California gold rush of 1848 in its excitement and Wild West atmosphere. And it brought far more wealth to the prospectors than any gold rush.
Petroleum could be refined into many products. For some years kerosene continued to be the 29 one. It was sold in grocery stores and door-to-door. In the 1880s and 1890s refiners learned how to make other petroleum products such as waxes and 30 oil. Petroleum was not then used to make gasoline or heating oil.
答案： L[考点] 考查动词。
前一句中提到“盲目开采油井者”在宾夕法尼亚西部钻井，寻找石油这种“黑色的金子”。空格所...
填空题

A．exploited B．impact C．virtual D．entitles
E．Spontaneously F．able G．accessible H．observed
I．perceptive J．appliances K．deserves L．gravitational
M．influence N．capable O．Simultaneously
It has been necessary to refer to the effects of the two world wars in promoting all kinds of innovation. It should be 1 also that technological innovations have transformed the character of war itself by the introduction of new mechanical and chemical devices. One weapon developed during World War Ⅱ 2 a special mention. The principle of rocket propulsions was well known earlier, and its possibilities as a means of achieving speeds sufficient to escape from the Earth"s 3 pull had been pointed out by the Russian and the American scientists. The latter built experimental liquid-fuelled rockets in 1926. 4 , a group of German and Romanian pioneers was working along the same line, and in the 1930s, it was this team who developed a rocket 5 of delivering a warhead hundreds of miles away. Reaching a height of over 100 miles, the V-2 rocket marked the beginning of the space age, and members of its design team were instrumental in both the Soviet and United States space programs after the war.
Technology had a tremendous social 6 in the period 1900-1945. The automobile and electric power, for instance, radically changed both the scale and the quality of 20th-century life, promoting a process of rapid urbanization and a(n) 7 revolution in living through mass production of household goods and 8 . The rapid development of the airplane, the cinema, and radio made the world seem suddenly smaller and more 9 . The development of many products of the chemical industry further transformed the life of most people. In the years following 1945, the constructive and creative opportunities of modem technology could be 10 , although the process has not been without its problems.
答案： G[考点] 考查形容词。
该句意为“飞机、电影和无线电的快速发展使得这个世界好像突然变得更小、更______。...
填空题

A. severe B. generally C. treatment D. mistaken E. challenges
F. disapprove G. matter H. rigorous I. magic J. suspected
K. publically L. factors M. faulty N. based O. questioned
Scientists have finally figured out how the key gene tied to obesity makes people fat, a major discovery that could open the door to an entirely new approach to the problem beyond diet and exercise.
Since 2007, researchers have known that a gene called FTO was related to obesity, but they didn"t know how, and could not tie it to appetite or other known 11 .
Now experiments reveal that a 12 version of the gene causes energy from food to be stored as fat. Genetic tinkering in mice and on human cells in the lab suggests this can be reversed, giving hope that a drug or other 13 might be developed to do the same in people.
The discovery 14 the notion that "when people get obese it was basically their own choice because they choose to eat too much or not exercise," said study leader Melina Claussnitzer, a genetics specialist. For the first time, genetics has revealed a mechanism in obesity that was not really 15 before and gives a third explanation or factor that"s involved.
Several obesity drugs are already on the market, but they are 16 used for short-term weight loss and are aimed at the brain and appetite; they don"t directly target metabolism. Researchers can"t guess how long it might take before a drug 17 on the new findings becomes available. But it"s unlikely it would be a 18 pill that would enable people to eat anything they want without packing on the pounds. And targeting this fat pathway could affect other things, so a treatment would need 19 testing to prove safe and effective.
The gene glitch doesn"t explain all obesity. It was found in 44 percent of Europeans but only 5 percent of blacks, so other genes clearly are at work, and food and exercise still 20 .
答案： I[解析] 从词性判断，该空格需要填入形容词。选择依据上下文，尤其是that would enable people t...
填空题

A．principal B．lubricating C．yield D．Crude
E．substitute F．collecting G．surplus H．impractical
I．smelting J．gathering K．produce L．rivaled
M．competed N．petroleum O．Coarse
An important new industry, oil refining, grew after the Civil War. 21 oil, or petroleum, a dark, thick ooze from the earth had been known for hundreds of years, but little use had ever been made of it. In the l850s, Samuel M. Kier, a manufacturer in western Pennsylvania, began 22 the oil and refining it into kerosene. Refining, like 23 , is a process of removing impurities from a raw material.
Kerosene was used to light lamps. It was a cheap 24 for whale oil, which was becoming harder to get. Soon there was a large demand for kerosene. People began to search for new supplies of 25 .
The first oil well was drilled by E. L. Drake, a retired railroad conductor. In 1859 he began drilling in Titusville, Pennsylvania. The whole venture of drilling seemed so 26 and foolish that onlookers called it "Drake"s Folly". But when he had drilled down about 70 feet (21 meters), Drake struck oil. His well began to 27 20 barrels of crude oil a day.
News of Drake"s success brought oil prospectors to the scene. By the early 1860s these wildcatters were drilling for "black gold" all over western Pennsylvania. The boom 28 the California gold rush of 1848 in its excitement and Wild West atmosphere. And it brought far more wealth to the prospectors than any gold rush.
Petroleum could be refined into many products. For some years kerosene continued to be the 29 one. It was sold in grocery stores and door-to-door. In the 1880s and 1890s refiners learned how to make other petroleum products such as waxes and 30 oil. Petroleum was not then used to make gasoline or heating oil.
答案： A[考点] 考查形容词。
分析句子结构可知，空格处需填形容词。A项principal作形容词，意为“主要的”。...
填空题

A．exploited B．impact C．virtual D．entitles
E．Spontaneously F．able G．accessible H．observed
I．perceptive J．appliances K．deserves L．gravitational
M．influence N．capable O．Simultaneously
It has been necessary to refer to the effects of the two world wars in promoting all kinds of innovation. It should be 1 also that technological innovations have transformed the character of war itself by the introduction of new mechanical and chemical devices. One weapon developed during World War Ⅱ 2 a special mention. The principle of rocket propulsions was well known earlier, and its possibilities as a means of achieving speeds sufficient to escape from the Earth"s 3 pull had been pointed out by the Russian and the American scientists. The latter built experimental liquid-fuelled rockets in 1926. 4 , a group of German and Romanian pioneers was working along the same line, and in the 1930s, it was this team who developed a rocket 5 of delivering a warhead hundreds of miles away. Reaching a height of over 100 miles, the V-2 rocket marked the beginning of the space age, and members of its design team were instrumental in both the Soviet and United States space programs after the war.
Technology had a tremendous social 6 in the period 1900-1945. The automobile and electric power, for instance, radically changed both the scale and the quality of 20th-century life, promoting a process of rapid urbanization and a(n) 7 revolution in living through mass production of household goods and 8 . The rapid development of the airplane, the cinema, and radio made the world seem suddenly smaller and more 9 . The development of many products of the chemical industry further transformed the life of most people. In the years following 1945, the constructive and creative opportunities of modem technology could be 10 , although the process has not been without its problems.
答案： A[考点] 考查动词。
该句意为“在1945年之后，尽管现代技术并非完美无缺，不过它提供的建设性和创造性的机会...
填空题

A．principal B．lubricating C．yield D．Crude
E．substitute F．collecting G．surplus H．impractical
I．smelting J．gathering K．produce L．rivaled
M．competed N．petroleum O．Coarse
An important new industry, oil refining, grew after the Civil War. 21 oil, or petroleum, a dark, thick ooze from the earth had been known for hundreds of years, but little use had ever been made of it. In the l850s, Samuel M. Kier, a manufacturer in western Pennsylvania, began 22 the oil and refining it into kerosene. Refining, like 23 , is a process of removing impurities from a raw material.
Kerosene was used to light lamps. It was a cheap 24 for whale oil, which was becoming harder to get. Soon there was a large demand for kerosene. People began to search for new supplies of 25 .
The first oil well was drilled by E. L. Drake, a retired railroad conductor. In 1859 he began drilling in Titusville, Pennsylvania. The whole venture of drilling seemed so 26 and foolish that onlookers called it "Drake"s Folly". But when he had drilled down about 70 feet (21 meters), Drake struck oil. His well began to 27 20 barrels of crude oil a day.
News of Drake"s success brought oil prospectors to the scene. By the early 1860s these wildcatters were drilling for "black gold" all over western Pennsylvania. The boom 28 the California gold rush of 1848 in its excitement and Wild West atmosphere. And it brought far more wealth to the prospectors than any gold rush.
Petroleum could be refined into many products. For some years kerosene continued to be the 29 one. It was sold in grocery stores and door-to-door. In the 1880s and 1890s refiners learned how to make other petroleum products such as waxes and 30 oil. Petroleum was not then used to make gasoline or heating oil.
答案： B[考点] 考查形容词。
该处句意为“19世纪八九十年代，炼油者们懂得了如何生产其他石油产品，如蜡和_____...
填空题

A. severe B. generally C. treatment D. mistaken E. challenges
F. disapprove G. matter H. rigorous I. magic J. suspected
K. publically L. factors M. faulty N. based O. questioned
Scientists have finally figured out how the key gene tied to obesity makes people fat, a major discovery that could open the door to an entirely new approach to the problem beyond diet and exercise.
Since 2007, researchers have known that a gene called FTO was related to obesity, but they didn"t know how, and could not tie it to appetite or other known 11 .
Now experiments reveal that a 12 version of the gene causes energy from food to be stored as fat. Genetic tinkering in mice and on human cells in the lab suggests this can be reversed, giving hope that a drug or other 13 might be developed to do the same in people.
The discovery 14 the notion that "when people get obese it was basically their own choice because they choose to eat too much or not exercise," said study leader Melina Claussnitzer, a genetics specialist. For the first time, genetics has revealed a mechanism in obesity that was not really 15 before and gives a third explanation or factor that"s involved.
Several obesity drugs are already on the market, but they are 16 used for short-term weight loss and are aimed at the brain and appetite; they don"t directly target metabolism. Researchers can"t guess how long it might take before a drug 17 on the new findings becomes available. But it"s unlikely it would be a 18 pill that would enable people to eat anything they want without packing on the pounds. And targeting this fat pathway could affect other things, so a treatment would need 19 testing to prove safe and effective.
The gene glitch doesn"t explain all obesity. It was found in 44 percent of Europeans but only 5 percent of blacks, so other genes clearly are at work, and food and exercise still 20 .
答案： H[解析] 从词性判断，该空格需要填入形容词。选择rigorous首先依据下文to prove safe and eff...
填空题

A. severe B. generally C. treatment D. mistaken E. challenges
F. disapprove G. matter H. rigorous I. magic J. suspected
K. publically L. factors M. faulty N. based O. questioned
Scientists have finally figured out how the key gene tied to obesity makes people fat, a major discovery that could open the door to an entirely new approach to the problem beyond diet and exercise.
Since 2007, researchers have known that a gene called FTO was related to obesity, but they didn"t know how, and could not tie it to appetite or other known 11 .
Now experiments reveal that a 12 version of the gene causes energy from food to be stored as fat. Genetic tinkering in mice and on human cells in the lab suggests this can be reversed, giving hope that a drug or other 13 might be developed to do the same in people.
The discovery 14 the notion that "when people get obese it was basically their own choice because they choose to eat too much or not exercise," said study leader Melina Claussnitzer, a genetics specialist. For the first time, genetics has revealed a mechanism in obesity that was not really 15 before and gives a third explanation or factor that"s involved.
Several obesity drugs are already on the market, but they are 16 used for short-term weight loss and are aimed at the brain and appetite; they don"t directly target metabolism. Researchers can"t guess how long it might take before a drug 17 on the new findings becomes available. But it"s unlikely it would be a 18 pill that would enable people to eat anything they want without packing on the pounds. And targeting this fat pathway could affect other things, so a treatment would need 19 testing to prove safe and effective.
The gene glitch doesn"t explain all obesity. It was found in 44 percent of Europeans but only 5 percent of blacks, so other genes clearly are at work, and food and exercise still 20 .
答案： G[解析] 从词性判断，该空格需要填入动词。依据上文The gene glitch doesn"t explain al...
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