A

For most pregnant women, exercise is the last thing on their minds. After all, keeping slim while you’re expecting isn’t exactly the top priority— rather, it’s making sure your baby gets enough nutrients to grow. But in a small new study, researchers at the University of Auckland in New Zealand report that a mother’s regular aerobic exercise may be good for a growing fetus’ health — and may even help a baby get a healthier start in life.

The finding is a bit surprising, because exercise is known to lower the risk of insulin resistance（胰岛素抵抗），a condition eventually leading to diabetes（糖尿病）. Although insulin resistance is a detriment in healthy adults, it turns out to be helpful for proper fetal（胎儿）development. In pregnant women, this condition means nutrients get shunted to the growing baby.

The question is: could a mother’s exercise put her developing baby’s food supply at risk? Past studies looking at the effect of exercise on birth weight have been inconclusive, and none have really investigated the influence of exercise on the mother’s sensitivity to insulin. So the University of Auckland’s Dr. Paul Hoffman and his team decided to study 84 first-time mothers, who were of normal weight on average, and track any effects aerobic exercise(有氧运动) might have on their insulin sensitivity and, ultimately, on their babies’ birth weight. Researchers asked some women to exercise on a stationary bicycle for at least 40 minutes per session, up to five times each week, starting in the 20th week of pregnancy; the other women were not specifically asked to exercise. When the two groups and their babies were compared, the team found that women who bicycled regularly gave birth to babies who were on average 150g lighter than those born to the non-exercising mothers. In both groups, however, the babies were of healthy weight, and there was no difference in the mothers’ weights.

Generally speaking, babies on the lower end of the normal weight range are considered healthier and less prone to developing diabetes and obesity than heavier ones, so this was an encouraging result. Even more reassuring was that regular exercise did not seem to affect the flow of nutrients to the growing babies in the womb.

41. According to the new study, a pregnant woman’s regular exercise may _______.

  A. bring benefits to a baby’s growth

  B. lower the risk of insulin resistance

  C. put her baby’s food supply at risk

  D. help her keep slim and healthy

42. What does the underlined word “detriment” mean in the second paragraph?

  A. Something that brings good.

  B. Something that brings damage.

  C. Something that brings obstacles.

  D. Something that brings development.

43. What is the purpose of the experiment carried out by Dr. Paul Hoffman?

  A. To investigate the influence of exercise on pregnant women.

  B. To find out what aerobic exercise can benefit a baby’s growth.

  C. To make sure of the effects exercise may have on babies’ birth weight

  D. To compare the differences between mothers who exercise and who don’t

44. Which of the following statements is true according to the passage?

  A. Lighter babies are generally believed to be healthier than heavier ones.

  B. Non­－exercising mothers will definitely give birth to heavier babies.

  C. No studies have looked at the effect of exercise on birth weight before.

  D. Some women studied were asked to exercise regularly while some don’t.

45. Which of the following may be the best title for the passage?

  A. All mothers should take aerobic exercise.

  B. Moms who exercise give birth to lighter babies。

  C. Exercise reduces the risk of insulin resistance.

  D. Heavier babies are more likely to develop diabetes.

Sunday is more like Monday than it used to be. Places of business that used to keep daytime “business hours” are now open late into the night. And on the Internet, the hour of the day and the day of the week have become irrelevant （不相关的）. A half century ago in the United States, most people experienced strong and precise dividing lines between days of rest and days of work, school time and summer time. Today the boundaries still exist, but they seem not clear.

The law in almost all states used to require stores to close on Sunday; in most, it no longer does. It used to keep the schools open in all seasons except summer; in most, it still does. And whether the work week should strengthen its legal limits, or whether it should become more “flexible,” is often debated. How should we, as a society, organize our time? Should we go even further in relaxing the boundaries of  time until we live in a world in which every minute is much like every other?

These are not easy questions even to ask. Part of the difficulty is that we rarely recognize the “law of time” even when we meet it face to face. We know as children that we have to attend school a certain number of hours, a certain number of days, a certain number of years—but unless we meet the truant officer （学监）, we may well think that we should go to school due to social custom and parents’ demand rather than to the law. As adults we are familiar with “extra pay for overtime working,” but less familiar with the fact that what constitutes （构成） “overtime” is a matter of legal definition. When we turn the clock forward to start daylight-saving time, have we ever thought to ourselves: “Here is the law in action”? As we shall see, there is a lot of law that has great influence on how we organize and use time: compulsory education law, overtime law, and daylight-saving law — as well as law about Sunday closing, holidays, being late to work, time zones, and so on. Once we begin to look for it, we will have no trouble finding a law of time to examine and assess.

By saying “Sunday is more like Monday than it used to be”, the writer means that_____ .

A. work time is equal to rest time

B. many people have a day off on Monday

C. it is hard for people to decide when to rest

D. the line between work time and rest time is unclear

The author raises the questions in Paragraph 2 to introduce the fact that people

A. fail to make full use of their time               B. enjoy working overtime for extra pay

C. are unaware of the law of time                   D. welcome flexible working hours

According to the passage, most children tend to believe that they go to school because they ______.

A. need to acquire knowledge                          B. have to obey their parents

C. need to find companions                             D. have to observe the law

What is the main idea of the passage?

A. Our life is governed by the law of time.

B. How to organize time is not worth debating.

C. New ways of using time change our society.

D. Our time schedule is decided by social customs.

Sunday is more like Monday than it used to be. Places of business that used to keep daytime “business hours” are now open late into the night. And on the Internet, the hour of the day and the day of the week have become irrelevant （不相关的）. A half century ago in the United States, most people experienced strong and precise dividing lines between days of rest and days of work, school time and summer time. Today the boundaries still exist, but they seem not clear.  

The law in almost all states used to require stores to close on Sunday; in most, it no longer does. It used to keep the schools open in all seasons except summer; in most, it still does. And whether the work week should strengthen its legal limits, or whether it should become more “flexible,” is often debated. How should we, as a society, organize our time? Should we go even further in relaxing the boundaries of  time until we live in a world in which every minute is much like every other?  

These are not easy questions even to ask. Part of the difficulty is that we rarely recognize the “law of time” even when we meet it face to face. We know as children that we have to attend school a certain number of hours, a certain number of days, a certain number of years ― but unless we meet the truant officer （学监）, we may well think that we should go to school due to social custom and parents’ demand rather than to the law. As adults we are familiar with “extra pay for overtime working,” but less familiar with the fact that what constitutes （构成） “overtime” is a matter of legal definition. When we turn the clock forward to start daylight-saving time, have we ever thought to ourselves: “Here is the law in action”? As we shall see, there is a lot of law that has great influence on how we organize and use time: compulsory education law, overtime law, and daylight-saving law ― as well as law about Sunday closing, holidays, being late to work, time zones, and so on. Once we begin to look for it, we will have no trouble finding a law of time to examine and assess.  

67. By saying “Sunday is more like Monday than it used to be”, the writer means that      .  

A. work time is equal to rest time  

B. many people have a day off on Monday  

C. it is hard for people to decide when to rest  

D. the line between work time and rest time is unclear  

68. The author raises the questions in Paragraph 2 to introduce the fact that people  

A. fail to make full use of their time                 B. enjoy working overtime for extra pay  

C. are unaware of the law of time                   D. welcome flexible working hours  

69. According to the passage, most children tend to believe that they go to school because they ______.  

A. need to acquire knowledge                          B. have to obey their parents  

C. need to find companions                             D. have to observe .the law  

70. What is the main idea of the passage?  

A. Our life is governed by the law of time.  

B. How to organize time is not worth debating.  

C. New ways of using time change our society.  

D. Our time schedule is decided by social customs.  

Sunday is more like Monday than it used to be. Places of business that used to keep daytime “business hours” are now open late into the night. And on the Internet, the hour of the day and the day of the week have become irrelevant （不相关的）. A half century ago in the United States, most people experienced strong and precise dividing lines between days of rest and days of work, school time and summer time. Today the boundaries still exist, but they seem not clear.
The law in almost all states used to require stores to close on Sunday; in most, it no longer does. It used to keep the schools open in all seasons except summer; in most, it still does. And whether the work week should strengthen its legal limits, or whether it should become more “flexible,” is often debated. How should we, as a society, organize our time? Should we go even further in relaxing the boundaries of  time until we live in a world in which every minute is much like every other?
These are not easy questions even to ask. Part of the difficulty is that we rarely recognize the “law of time” even when we meet it face to face. We know as children that we have to attend school a certain number of hours, a certain number of days, a certain number of years—but unless we meet the truant officer （学监）, we may well think that we should go to school due to social custom and parents’ demand rather than to the law. As adults we are familiar with “extra pay for overtime working,” but less familiar with the fact that what constitutes （构成）“overtime” is a matter of legal definition. When we turn the clock forward to start daylight-saving time, have we ever thought to ourselves: “Here is the law in action”? As we shall see, there is a lot of law that has great influence on how we organize and use time: compulsory education law, overtime law, and daylight-saving law — as well as law about Sunday closing, holidays, being late to work, time zones, and so on. Once we begin to look for it, we will have no trouble finding a law of time to examine and assess.
【小题1】By saying “Sunday is more like Monday than it used to be”, the writer means that_____ .

Sunday is more like Monday than it used to be. Places of business that used to keep daytime “business hours” are now open late into the night. And on the Internet, the hour of the day and the day of the week have become irrelevant （不相关的）. A half century ago in the United States, most people experienced strong and precise dividing lines between days of rest and days of work, school time and summer time. Today the boundaries still exist, but they seem not clear.

The law in almost all states used to require stores to close on Sunday; in most, it no longer does. It used to keep the schools open in all seasons except summer; in most, it still does. And whether the work week should strengthen its legal limits, or whether it should become more “flexible,” is often debated. How should we, as a society, organize our time? Should we go even further in relaxing the boundaries of  time until we live in a world in which every minute is much like every other?

These are not easy questions even to ask. Part of the difficulty is that we rarely recognize the “law of time” even when we meet it face to face. We know as children that we have to attend school a certain number of hours, a certain number of days, a certain number of years — but unless we meet the truant officer （学监）, we may well think that we should go to school due to social custom and parents’ demand rather than to the law. As adults we are familiar with “extra pay for overtime working,” but less familiar with the fact that what constitutes （构成） “overtime” is a matter of legal definition. When we turn the clock forward to start daylight-saving time, have we ever thought to ourselves: “Here is the law in action”? As we shall see, there is a lot of law that has great influence on how we organize and use time: compulsory education law, overtime law, and daylight-saving law — as well as law about Sunday closing, holidays, being late to work, time zones, and so on. Once we begin to look for it, we will have no trouble finding a law of time to examine and assess.

1.By saying “Sunday is more like Monday than it used to be”, the writer means that      .

A. work time is equal to rest time

B. many people have a day off on Monday

C. it is hard for people to decide when to rest

D. the line between work time and rest time is unclear

2.The author raises the questions in Paragraph 2 to introduce the fact that people

A. fail to make full use of their time          B. enjoy working overtime for extra pay

C. are unaware of the law of time               D. welcome flexible working hours

3.According to the passage, most children tend to believe that they go to school because they ______.

A. need to acquire knowledge                B. have to obey their parents

C. need to find companions                  D. have to observe .the law

4.What is the main idea of the passage?

A. Our life is governed by the law of time.

B. How to organize time is not worth debating.

C. New ways of using time change our society.

D. Our time schedule is decided by social customs.