8. The strength the storm sometimes surprises people.
科目：高中英语 来源： 题型：
3. Sandstorms in China appear to have increased in recent years as a result of “desertification”.
翻译
仿写他好像知道此事了。
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5. So if you want to go out,you’d better a mask.
A. to wear B. wearing
C. wear D. wore
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IV.阅读填空
There is an English saying “ 1 ” 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. 2
Tests were carried out to study the effects of laughter on the body. People watched funny films while doctors checked their hearts,blood pressure,breathing and muscles. It was found that laughter has similar effects to physical exercise. 3 If laughter exercises the body,it must be beneficial.
Other tests have shown that laughter appears to be able to reduce the effect of pain on the body. In one experiment doctors produced pain in groups of students who listened to different radio programmes. The group that tolerated (忍耐) the pain for the longest time was the group which listened to a funny programme. 4
5 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.
A. Laughter can prolong one's life.
B. 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.
C. The reason why laughter can reduce pain seems to be that it helps to produce a kind of chemicals in the brain which diminish both stress and pain.
D. 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.
E. Although laughter helps cure the disease,doctors still cannot put this theory into clinic practice.
F. Laughter is the best medicine.
G. They have found that laughter can really improve people's health.
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3. This is a process that happens when land becomes desert because of climate changes and because people cut trees and dig grass.
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10. n. ： a piece of cloth or other material that you wear over all or part of your face to protect you from germs or harmful substances
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