题目内容
7.To understand how mirrors produce images,we need to know what light does.分析 为了理解镜子如何产生图象,我们需要知道光是干什么的.
解答 答案是To understand.本题考查语境中选用恰当的词或短语的适当形式.根据句意,题干中需要不定式表示目的,"为了理解"镜子如何产生图象,故答案是To understand.
点评 单词填空必须在对语境整体理解的基础上抓住指向答案的关键线索、固定句型或搭配等,同时注意所选词的形式变化.
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