单选题We can conclude from the last paragraph that______.Atrade winds are harmful to the low clouds.Bdeep clouds are helpful to cool the earth.Cglobal warming can result in more low clouds.Dglobal warming can destroy the form of atmosphere.
单选题
We can conclude from the last paragraph that______.
A
trade winds are harmful to the low clouds.
B
deep clouds are helpful to cool the earth.
C
global warming can result in more low clouds.
D
global warming can destroy the form of atmosphere.
参考解析
解析：
推理判断题。由题干关键词定位至原文末段。由该段第二句as the earth’s surface warms, the atmosphere becomes more unstable推知，地球变暖可能改变大气构成，而这种改变又是负面的，故D为正确答案。由该段倒数第二句the trade winds weakened, which further dissipated the low clouds，可推知信风对低云层有利，故排除A；由该段第三句Those types of high-altitude clouds don’t have the same cooling effect排除B；由该段倒数第二句可知随着海洋的变暖，低层云层变少了，排除C。
推理判断题。由题干关键词定位至原文末段。由该段第二句as the earth’s surface warms, the atmosphere becomes more unstable推知，地球变暖可能改变大气构成，而这种改变又是负面的，故D为正确答案。由该段倒数第二句the trade winds weakened, which further dissipated the low clouds，可推知信风对低云层有利，故排除A；由该段第三句Those types of high-altitude clouds don’t have the same cooling effect排除B；由该段倒数第二句可知随着海洋的变暖，低层云层变少了，排除C。
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