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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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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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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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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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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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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.

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

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

50. According to the author, ____________.

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.