One way that scientists learn about man is by studying animals, such as mice and monke

听力原文： One way that scientists learn about man is by animals, such as mice, rats and monkeys. The scientists in this laboratory are experimenting on mice. They are studying the relationship between diet and health. At this time over one hundred experiments are going on in this laboratory.

In this experiment, the scientists are studying the relationship between the amount of food the mice eat and their health. The mice are in three groups. All three groups are receiving the same healthy diet. But the amount of food that each group is receiving is different. The first group is eating one cup of food each day, the second is eating two cups, and the third group of mice is eating three cups.

After three years, the healthiest group is the one that is only eating one cup of food each day. The mice in this group are thinner than normal mice. But they are more active. Also they are living longer. Mice usually live tot two years. Most of the mice in this group are still alive after three years. The second group of mice is normal weight. They are healthy, too. They are active, but not as active as the thinner mice. But they are only living about two years. The last group of mice spends most of the day eating or sleeping. They are not very active. These mice are living longer than the scientists thought: about a year and a half. But they are not healthy. The experiment is still going on. The scientists hope to finish their studies in two years.

(33)

A．Mice

B．Rats

C．Monkeys

D．A，B and C

听力原文： One way that scientists learn about man is by animals, such as mice, rats and monkeys. The scientists in this laboratory are experimenting on mice. They are studying the relationship between diet and health. At this time over one hundred experiments are going on in this laboratory.

In this experiment, the scientists are studying the relationship between the amount of food the mice eat and their health. The mice are in three groups. All three groups are receiving the same healthy diet. But the amount of food that each group is receiving is different. The first group is eating one cup of food each day, the second is eating two cups, and the third group of mice is eating three cups.

After three years, the healthiest group is the one that is only eating one cup of food each day. The mice in this group are thinner than normal mice. But they are more active. Also they are living longer. Mice usually live for two years. Most of the mice in this group are still alive after three years. The second group of mice is normal weight. They are healthy, too. They are active, but not as active as the thinner mice. But they are only living about two years. The last group of mice spends most of the day eating or sleeping. They are not very ac tire. These mice are living longer than the scientists thought: about a year and a hell But they are not healthy. The experiment is still going on. The scientists hope to finish their studies in two years.

(33)

A．Mice.

B．Rats.

C．Monkeys.

D．A, B and C

听力原文： One way that scientists learn about man is by animals, such as mice, rats and monkeys. The scientists in this laboratory are experimenting on mice. They are studying the relationship between diet and health. At this time over one hundred experiments are going on in this laboratory.

In this experiment, the scientists are studying the relationship between the amount of food the mice eat and their health. The mice are in three groups. All three groups are receiving the same healthy diet. But the amount of food that each group is receiving is different. The first group is eating one cup of food each day, the second is eating two cups, and the third group of mice is eating three cups.

After three years, the healthiest group is the one that is only eating one cup of food each day. The mice in this group are thinner than normal mice. But they are more active. Al so they are living longer. Mice usually live for two years. Most of the mice in this group are still alive after three years. The second group of mice is normal weight. They are healthy, too. They axe active, but not as active as the thinner mice. But they are only living about two. years. The last group of mice spends most of the day eating or sleeping. They are not very active. These mice are living longer than the scientists thought: about a year and a half. But they are not healthy. The experiment is still going on. The scientists hope to finish their studies in two years. 32．According to the passage，what animals are often used by scientists to learn about man?

(33)

A．Mice.

B．Rats.

C．Monkeys.

D．A, B andC

Scientists can learn about man by studying animals, such as mice, rats and monkeys. The scientists in a laboratory areexperimenting on mice and they are studying the relationship between diet and health. In this experiment, the scientists are studying the relationship between the amount of food the mice can eat and theirhealth. The mice are in three groups. All these groups are receiving the same healthy diet. But the amount of food that eachgroup is receiving is different. The first group is eating one cup of food each day, the second two cups, and the third threecups. After three years, the healthiest group is the one that is only eating one cup of food each day. The mice in this group arethinner than normal mice but they are more active. Most of the day, they are running, playing with one another, and using theequipment in their cages. Also, they are living longer. Mice usually live for two years, while most of the mice in this groupare still alive after three years. The second group of mice is of normal weight. They are healthy, too. They are active, but not as active as the thinnermice. But they are only living about two years. The last group of mice is receiving more food than the other two groups. Most of the day, these mice are eating orsleeping. They are not active. These mice are living longer than the scientists thought —about a year and a half, but they arenot healthy. The are sick more often than the other two groups. The first group is the thinnest mainly because

A.they run and play all day long

B.they eat only one cup of food a day

C.they live longer than the other groups

D.they are bored with the kind of food in the cup

Question 24 to 27 are based on the following passage.

Scientists can learn about man by studying animals, such as mice, rats and monkeys. The scientists in a laboratory areexperimenting on mice and they are studying the relationship between diet and health.

In this experiment, the scientists are studying the relationship between the amount of food the mice can eat and theirhealth. The mice are in three groups. All these groups are receiving the same healthy diet. But the amount of food that eachgroup is receiving is different. The first group is eating one cup of food each day, the second two cups, and the third threecups.

After three years, the healthiest group is the one that is only eating one cup of food each day. The mice in this group arethinner than normal mice but they are more active. Most of the day, they are running, playing with one another, and using theequipment in their cages. Also, they are living longer. Mice usually live for two years, while most of the mice in this groupare still alive after three years.

The second group of mice is of normal weight. They are healthy, too. They are active, but not as active as the thinnermice. But they are only living about two years.

The last group of mice is receiving more food than the other two groups. Most of the day, these mice are eating orsleeping. They are not active. These mice are living longer than the scientists thought —about a year and a half, but they arenot healthy. The are sick more often than the other two groups.

24. The first group is the thinnest mainly because__________

A.they run and play all day long

B.they eat only one cup of food a day

C.they live longer than the other groups

D.they are bored with the kind of food in the cup

How long do normal mice live according to the passage?A.about one year

B.about a year and a half

D.about two years

E.about three years

What can we learn from the experiment?A.daily amount of food may influence our health

B.sleeping may have nothing to do with weight

C.playing with others may help us sleep better

D.less exercise may make us live longe

This passage is mainly about the relationship between___________A.food and health

B.sleep and weight

C.weight and exercise

D.exercise and equipment

请帮忙给出每个问题的正确答案和分析，谢谢！

Passage Four

Does money buy happiness？It’s sometimes said that scientists have found no relationship between money and happiness，but that’s a myth，says University of Illinois psychologist Ed Denier.

The connection is complex. In fact，very rich people rate substantially higher in satisfaction with life than very poor people do，even within wealthy nations. He says“There is overwhelming evidence that money buys happiness.”said economist Andrew Oswald of the University of Warwick in England. The main debate，he said，is how strong the effect is.

Oswald recently reported a study of Britons who won between $ 2000 and $ 250000 in a lottery（彩票拍奖）. As a group，they showed a boost in happiness averaging a bit more than one point on a 36-point scale when surveyed two years after their win，compared to their levels two years before they won.

Daniel Kahneman，a Nobel-Prize winner and Princeton economist，and colleagues，recently declared that the notion that making a lot of money will produce good overall mood is“mostly illusory”. They noted that in one study，members of the high-income group were almost twice as likely to call themselves“very happy”as people from households with incomes below $ 2000. But other studies，rather than asking for a summary estimate of happiness，follow people through the day and repeatedly record their feelings. These studies show less effect of income on happiness，Kahneman and colleagues said.

There is still another twist to the money-happiness story. Even though people who make $ 150000 are considerably happier than those who make $ 40000，it’s not clear why，says psychologist Richard E. Lucas of Michigau Sate University.

Researchers conclude that any effect of money on happiness is smaller than most daydreamer assume.“People exaggerate how much happiness is bought by an extra few thousand，”Oswald said.“The quality of relationships has a far bigger effect than quite large rise in salary...It’s much better advice，if you’re looking for happiness in life，to try to find the right husband or wife than to try to double your salary.”

46. The main purpose of this passage is to discuss .

A. the contributions of household incomes to happiness

B. the complex relationship between money and happiness

C. the positive relations of money to happiness

D. the negative relations of money to happiness

Does money buy happiness? It's sometimes said that scientists have found no relationship between money and happiness, but that's myth, says University of Illinois psychologist Ed Diener.

The connection is complex. In fact, very rich people rate substantially higher in satisfaction with life than very poor people do, even within wealthy nations, he says. "There is overwhelming evidence that money buys happiness," said economist Andrew Oswald of University of Warwick in England. The main debate, he said, is how strong the effect is.

Oswald recently reported a study of Britons who won between ＄ 2,000 and ＄ 250,000 in a lottery (彩票拍奖). As a group, they showed a boost in happiness averaging a bit more than one point on a 36-point scale when surveyed two years after their win, compared to their levels two years before they won.

Daniel Kahnman, a Nobel-Prize winner and Princeton economist, and colleagues, recently declared that the notion that making a lot of money will produce good overall mood is "mostly illusory". They noted that in one study, members of the high-income group were almost twice as likely to call themselves "very happy" as people from households with incomes below ＄ 20,000. But other studies, rather than asking for a summary estimate of happiness, follow people through the day and repeatedly record their feeling. These studies show less effect of income on happiness. Kahneman and colleagues said.

There is still another twist to the money-happiness story. Even though people who make＄150,000 are considerably happier than those who make ＄ 40,000, It's not clear why, says psychologist Richard E. Lucas of Michigan State University.

Researchers conclude that any effect of money on happiness is smaller than most daydreamers assume. "People exaggerate how much happiness is bought by an extra few thousand," Oswald said. "The quality of relationships has a far bigger effect than quite large rises in salary. It's much better advice, if you're looking for happiness in life, try to find the right husband or wife than to try to double your salary."

The main purpose of this passage is to discuss ______

A．the contributions of household incomes to happiness

B．the complex relationship between money and happiness

C．the positive relationship between money and happiness

D．the negative relations of money to happiness

Does money buy happiness? It's sometimes said that scientists have found no relationship between money and happiness, but that's myth, says University of Illinois psychologist Ed Diener.

The connection is complex. In fact, very rich people rate substantially higher in satisfaction with life than very poor people do, even within wealthy nations, he says. "There is overwhelming evidence that money buys happiness, "said economist Andrew Oswald of University of Warwick in England. The main debate, he said, is how strong the effect is.

Oswald recently reported a study of Britons who won between $ 2, 000 and $ 250, 000 in a lottery (彩票拍奖). As a group, they showed a boost in happiness averaging a bit more than one point on a 36-point scale when surveyed two years after their win, compared to their levels two years before they won.

Daniel Kahnman, a Nobel-Prize winner and Princeton economist, and colleagues, recently declared that the notion that making a lot of money will produce good overall mood is" mostly illusory". They noted that in one study, members of the high-income group were almost twice as likely to call themselves" very happy" as people from households with incomes below $ 20, 000. But other studies, rather than asking for a summary estimate of happiness, follow people through the day and repeatedly record their feeling. These studies show less effect of income on happiness. Kahnman and colleagues said.

There is still another twist to the money-happiness story. Even though people who make $ 150, 000 are considerably happier than those who make $ 40, 000 ,It's not clear why, says psychologist Richard E. Lucas of Michigan State University.

Researchers conclude that any effect of money on happiness is smaller than most daydreamers assume. "People exaggerate how much happiness is bought by an extra few thousand," Oswald said. "The quality of relationships has a far bigger effect than quite large rises in salary. It's much better advice, if you're looking for happiness in life, try to find the right husband or wife than to try to double your salary."

The main purpose of this passage is to discuss ______ .

A．the contributions of household incomes to happiness

B．the complex relationship between money and happiness

C．the positive relationship between money and happiness

D．the negative relations of money to happiness