题目内容
1.Not only crops,but also family income and nutrition areat the mercy of rain clouds.分析 不光是庄稼,就连家庭收入和营养也全依赖那些雨云.
解答 答案是at.本题考查语境中选用恰当的词或短语;本题考查固定短语at the mercy of 任由…摆布,故根据句意和搭配,答案是at.
点评 本题考查单词填空,做此类题目时一定要仔细分析句子结构,从语法、句意、时态等各方面判断所填词的正确形式.
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