题目内容
4.集中于focus on.分析 focus on 集中于
解答 答案:focus on 集中于
如:Today we're going to focus on the question of homeless people.
今天,我们主要讨论无家可归者的问题.
点评 对于单词短语的识记,要从词义着手,理解词性和常见用法或搭配,并能在语境中灵活运用.

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12.-He got fired because he was lazy.
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A. | That's all right. | B. | That makes sense. | ||
C. | What a pity! | D. | It all depends. |