or being touched. Now in America, touch is important. Friends touch each other on the arm, for example. They often put an arm around a friend when they say "hello" or "goodbye".

　　41. It is very important to know how to communicate nonverbally when you are in another country because______.

　　A. most people speak different languages

　　B. much of our communication is nonverbal on many occasions

　　C. people usually make gestures before saying anything

　　D. it's easy to learn how to express oneself through gestures

　　42. If a native in Singapore nods his head up and down when you talk to him, his motion means"______".

　　A. yes　　　　　　　 B. no

　　C. that's all right D. I've heard you

　　43. When the Russian leader put up his clasped hands after the meeting at the White House______.

　　A. he meant Russia was the winner

　　B. he was insulting America

　　C. he made a show of friendship to America

　　D. he in fact meant nothing at all

　　44. The gesture of putting one's thumb up shouldn't be used when you are travelling in______.

　　A. Italy B. the United States

　　C. Greece D. Southeast Asia

　　There is an English saying, "Laughter is the best medicine." Until recently, few people took the saying seriously. Now, however, doctors have begun to look into laughter and the effects it has on the human body. They have found that laughter can really improve people's health.

　　Tests were carried out to study the effects of laughter on the body. People watched funny films while doctors checked their heart, blood pressure, breathing and muscles. It was found that laughter has similar effects to physical exercise. It increases blood pressure, the heart beating and breathing; it also works several groups of muscles in the face, the stomach, and even the feet. If laughter exercises the body, it must be beneficial.

　　Other tests have shown that laughter appears to be able to reduce the effects of pain on the body. In one experiment, doctors produced pain in groups of students who listened to different radio programs. The group that tolerated the pain for the longest time was the group which listened to a funny program. The reason why laughter can reduce pain seems to be that it helps to produce a kind of chemicals in the brain which decrease both stress and pain.

　　As a result of these discoveries, some doctors in the United States now hold laughter clinics, in which they help to improve their patients' condition by encouraging them to laugh. They have found that even if their patients do not really feel like laughing, making them smile is enough to produce beneficial effects similar to those caused by laughter.

　　45. We learn from the first paragraph that laughter______.

　　A. is good for one's health

　　B. is related to some illness

　　C. has been investigated

　　D. has no effect on the body

　　46. Which of the following statements is NOT true of laughter according to the passage?

　　A. It reduces pain. B. It exercises the body.

C. It reduces stress. D. It can cure cancer.