题目内容
13.Human beings are putting too much carbon dioxide into the atmosphere,which prevents heatfrom escaping from the earth into space.分析 人类将过多的二氧化碳排进大气,阻止了热量从地球进入太空.
解答 答案:from
分析句式可知,"which prevents heat…"是一个非限制性定语从句,从句中考查固定短语"prevent…from…",意为"阻止…做…".
点评 考查固定短语.考生在平时记忆短语时要注意一些带介词的短语不能混淆.
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