The earth will become worse and worse ________ we do something to stop her from
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The earth will become worse and worse ________ we do something to stop her from being polluted.A.if | B.even if | C.when | D.unless |
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答案
D |
解析
试题分析:考查连词辨析。 If 如果;ever if 即使;when 当。。时候;unless除非。句意:除非我们做一些事情来阻止它被污染否则地球会变得越来越糟糕。Unless 相当于 if not ,根据题意可知,这是个条件句,所以选D项。 |
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