填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: pregnant
题目列表

你可能感兴趣的试题

填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: car, bus or train[听力原文]
Workers who commute by car, bus...
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: for a baby[听力原文]
Women who are stressed while trying fo...
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: according to a study
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: 12,000
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: at home
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: public transport
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: pregnant
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: active commuters
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: rather than
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: the study
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: means
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: further investigation into
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: daughters
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: car and public transport users
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: the number of baby boys
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: poorer sleep quality
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: terrorist attacks
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: compared to
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: that
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: journey time
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: than expected
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: 54 minutes every day
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: to link the phenomenon
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: housing conditions
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: 190 million
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: Some 338 women
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: 6.5 days off sick
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: filled in questionnaires
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: highlight
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: in the months
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: do not prove that
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: 50 per cent
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: environmental factors
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: before pregnancy
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: the findings would help
填空题

Workers who commute by 21 to the office are more likely to suffer from stress and exhaustion, 22 .
Scientists assessed 23 employees aged between 18 and 65.
They found that those who travelled to work by car or 24 reported higher levels of stress and tiredness compared to 25 who travelled by foot or bicycle.
It is now expected that 26 , from Lund University in Sweden, will encourage 27 the health impacts of commuting and the best forms of transportation.
Researcher Erik Hansson said: "Generally 28 suffered more everyday stress, 29 , exhaustion and, on a seven point scale, felt that they struggled with their health 30 the active commuters. "
"The negative health of public transport users increased with 31 ."
According to the Office for National Statistics, the average Briton commutes for 32
But now the scientists claim that the advantages of daily travel, such as higher pay or 33 , need to be weighed against the adverse health effects.
It may also have a cost impact on industry.
According to a CBI and Pfizer Absence and Workplace Health Survey, the U.K. economy lost 34 working days to absence last year, with each employee taking an average of 35 , costing employers ā17billion.
However researchers 36 that the findings, published in the journal BMC Public Health, 37 commuting causes ill health and further research is needed.
Income, family background and 38 are other variables that need to be considered.
Hansson added that 39 to "readdress the balance between economic needs, health, and 40 ."

答案: the costs of working days lost
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: 75 percent less likely
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: was told
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: high levels of
填空题

Women who are stressed while trying 1 are more likely to have girls, research suggests.
A study found that those who were under pressure 2 , work or in their love life in the weeks or months before becoming 3 had higher than usual odds of giving birth to a daughter 4 a son.
The finding, by Oxford University and U.S. researchers, 5 the economic downturn could see more women give birth to 6 . The study follows others that have shown 7 goes down following major upheavals.
For instance, in the months after the 9.11 8 , the number of boys born in New York plunged, while the economic chaos 9 followed the collapse of the Berlin Wall saw far fewer boys born 10 in the former East Germany in 1991.
But the latest study is the first 11 to the stresses and strains of everyday life and to rising levels of stress hormones.
12 from around the U.K. who were trying to get pregnant kept diaries about their lives and 13 about how stressed they felt. Levels of stress hormones including cortisol were measured 14 before pregnancy.
Among the 15 of the women who had the highest amounts of cortisol 16 , the sex ratio was clearly skewed towards girls, the American Society for Reproductive Medicine"s annual conference heard.
The most stressed women were up to 17 to have boys than the least stressed, the conference in Orlando, Florida, 18 . Cortisol levels rise when people suffer long-term stress such as pressure at work and bad relationships.
It isn"t known why 19 cortisol appear to cut the odds of having a boy.
But, if the link is firmed up, 20 may be told about the benefits of relaxation, in the same way as they are now advised to take care of their health in other ways.

答案: would-be mothers
微信扫码免费搜题