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The sun’s heat warms the air and makes it move. This movement is called a wind. Different parts of the Earth receive different a
The sun’s heat warms the air and makes it move. This movement is called a wind. Different parts of the Earth receive different a
admin
2011-07-31
20
问题
The sun’s heat warms the air and makes it move. This movement is called a 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.
A strong wind is usually caused by a difference in______.
选项
A、heat
B、pressure
C、atmosphere
D、air
答案
B
解析
本题考查的是推理能力。该题可以从最后一段最后一句得出答案:“压差越大,风越大”。可见大风是由于压力差异造成的。
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本试题收录于:
英语题库成考专升本分类
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