超星 - 2021级秋季学期期中测试

单选题

Why do we laugh? For years scientists have asked themselves this question. No animals laugh and smile----only human beings do. So does laughing help us to live longer? The answer seems to lie in that smiling and laughing help us to become less worried and calmer, preventing illnesses that are caused by stress. Laughing is really the best medicine.But if you’re unhappy, it can’t do you any good to smile, can it? That’s not true. It is clear that smiling works just in the same way weather you feel like smiling or not. Scientists in California asked a group of students to act five different feelings: happiness, sadness, anger, surprise and fear----just using their faces. Changes in their heart rate, blood pressure and temperature were recorded. Most of the feelings they acted didn’t cause changes, but when the students smiled, their heart rate and their blood pressure went down. That happened even though they were only acting! So even if we feel sad inside, smiling seems to make us feel better.Now, what makes us laugh? It seems that the answer to the question is far from simple. Everyone likes jokes, but we don’t laugh at the same ones. It depends largely on how old we are. There are some jokes, for example, that children love but older people might not find funny.46.In the first paragraph, the underlined word “stress” can be best explained as “__________”.

A. surprise and fear
B. work and duty
C. happiness and sadness
D. pressure and worry

单选题

47.Which of the following statements is TRUE based on the passage?

A. Laughing helps us to live ten years longer.
B. If you are in a bad mood, smiling helps to make you feel relieved.
C. Our blood pressure can be influenced by five different facial expressions mentioned.
D. People, old and young, are likely to laugh at the same joke.

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单选题

48.In the passage, the writer seems to pay more attention to ___________.

A. how laughing and smiling are connected with health
B. comparing human beings with animals
C. finding out whether any research has been done about laughing
D. the degree to which laughing and smiling are helpful

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单选题

49. The passage tells us that smiling and laughing ________.

A. have nothing to do with one’s heart rate
B. do one no good when one is sad
C. lower one’s blood pressure
D. lower one’s body temperature

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单选题

50. According to the author, ____________.

A. it is rather complicated to answer the question “Why do we laugh?”
B. it is really simple to answer the question “Why do we laugh?”
C. it is not necessary to answer the question “Why do we laugh?”
D. scientists have already answered the question “Why do we laugh?”

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单选题

People with income below the poverty line are considered poor. Economists study the causes of poverty in order to find solutions to the problem.As the general stander of living rises, the poverty line does, too. Therefore, even with today’s relatively high standard of living, about 10 percent of the people in the United States are below the poverty line. However, if these people had stable jobs, they could have an acceptable standard of living. Economists suggest several reasons why poor people do not have jobs.For one thing, more than half of the poor people in the US are not qualified to work. Over 40 percent of the poor people are children. By law, children less than 16 years old cannot work in many industries. Meanwhile, a large number of poor people are old. Many companies do not hire people over 65 years old, the normal retirement age.Some poor adults so not look for jobs for a variety of personal reason: they are sick; they do not have any motivation; they have family problem; or they do not believe that they can find a job.Other poor people fail to find jobs. Many poor adults never went to high school. Therefore, when they look for jobs, they have few skills to offer.Economists are still looking for better solutions to the poverty problem. However, at the present time, many people depend on welfare for a minimally acceptable standard of living.51.The main purpose of the article is _________.

A. to define what the poverty line is
B. to explain why some people live below the poverty line
C. to find solutions to the poverty problem
D. to show sympathy for the poor people

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单选题

52. Which of the following statement is Not true?

About ten percent of the Americans live a poor life.
B. Poor people are those who live below the poverty line.
C. The poverty line rises as the general standard of living rises.
D. The poverty line tends to remain at the same level

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单选题

53. More than 40 percent of the poor people are children. This is mainly because _______.

A. they do not have enough motivation
B. they are not allowed to work by law
C. they fail to get enough education
D. they are very poor in health

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单选题

54. Most of the poor people in America are not qualified for employment because ______.

A. they do not have any motivation to work
B. they are not very self-confident
C. they are too young or too old to work
D. they have physical and family problems

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单选题

55. We may conclude from the passage that _______.

A. better solutions to the poverty problems have not yet been found
B. a good welfare system will enable people to become wealthy
C. poor people can get rid of poverty if they have chances to do business
D. to help the poor build up confidence is the best solution to the poverty problem

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