长丝弓 发表于 2020-10-29 17:15
GmatLa的大神是这样分析的:
题目分析:
focus这个词本身既可以是名词又可以是动词,但是,在(A)(B)两个选 ...
Will_Jeanette 发表于 2020-10-29 21:36
dd,求助nn们
长丝弓 发表于 2020-10-29 21:42
你看看大神还原后的句子,已经回答你的问题了:
Discussion of greenhouse effects has usually focused o ...
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