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If nothing ________, the oceans will tur...

If nothing ________, the oceans will turn into fish deserts.

A. does                B. had been done

C. will do           D. is done

 

D 【解析】 试题分析:考查动词的时态和语态。句意:如果置之不理,海洋就会变成鱼类的沙漠(海洋里就会没有鱼)。条件状语从句和时间状语从句中不能用将来时,只能用现在时表示将来的动作;而且主语nothing与动词do之间是被动的关系,因此要用被动语态。故D项正确。 【名师点睛】这题考查的是学生容易出错的时态用法,就是“主将从现”的用法。当主句是一般将来时的时候,条件,时间状语从句是一般现在时。反过来也适用。这时不能主从句的时态一致。考生要灵活使用 这一用法。  
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