四、阅读理解(共15小题，每题3分，共45分)
阅读下列短文，然后根据短文的内容从每小题的四个选项中选出最佳的一项。
A
The sun's heat warms the air and makes it move. This movement is called wind. Different parts of the Earth receive different amounts of heat. Near the equator (赤道) , the sun is overhead and heats the Earth intensely (强烈). Nearer the poles, the sun's rays strike the Earth at a low angle so the heat is not so intense.
A lot of the earth's heat is reflected back into spaces, by the atmosphere, clouds, dust in the air and by water, snow and ice. So some parts of the Earth are warm and some are cold. Warm air tends to rise and creates areas of high pressure. As warm air rises, cold air flows in and replaces it. The greater the pressure difference is, the stronger the wind blows.
36. A strong wind is usually caused by a difference in__________.
A. heat
B. pressure
C. atmosphere
D. air
37. Some parts of the Earth are warm and some are cold because__________.
A. a lot of the heat is reflected
B. there are clouds and dust in the air
C. different parts of the Earth receive and reflect different amounts of heat
D. different parts of the Earth have different sources of heat
38. The best title of the article is__________.
A. The Sun's Heat
B. Pressure
C. Atmosphere
D. Why Do Winds Blow
B
Our eating habits are very important for good health and a strong body. There are times when most of us would rather eat sweets and ice-cream than meat and rice. Sweets and ice-cream are not bad if we eat them at the end of a meal. If we eat them before a meal, they may take away our appetite(食欲).
It is important for us to eat our meals at the same time each day. When we feel hungry, it is a sign that our body needs food. When we feel angry or excited, we may not want to eat. A long time ago, in England, some judges used to decide whether a man was telling the truth by giving him some dry bread. If the man could not eat the bread, it showed that he was telling lies. Although this seems very strange and rather foolish, it is indeed a very good way of finding out the fact. A man who is worrying about something has difficulty in eating anything dry. Because he is worrying, he loses his appetite and does not want to eat.
39. We must have good eating habits because__________.
A. we want to eat more
B. we want to enjoy our meals
C. we want to be healthy
D. we want to grow up quickly
40. It is good to eat sweets and ice-cream__________.
A. when we are hungry
B. when we want to
C. at the end of a meal
D. before the meal
41. We'd better have our meals__________.
A. at the same time each day
B. when our work is over
C. when the meal is still hot
D. when every one of the family is home
42. A man who is worrying__________.
A. has a better appetite
B. likes to tell lies
C. likes to eat ice-cream
D. has a poor appetite
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