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语法单选题系列37 1．The book about environment ______ the importance of protecting the earth. A. starts B. states C. tells D. says 【答案】B 【解析】动词辨析。A开始，开办；B陈述；C告诉；D说；结合句意可知B正确。句意：这本关于环境的书陈述了保护地球的重要性。 2．It was ______ back home after the experiment. A. not until midnight did he go B. until midnight that he didn’t go C. not until midnight that he went D. until midnight when he didn’t go 【答案】C 【解析】考察强调句型。本文强调的是not until引导的时间状语从句。原句为：He didn’t go back home after the experiment until midnight.对其中的时间状语从句进行强调，故C正确。 3．________ with the size of the whole earth, the biggest ocean does not seem big at all. A. To compare B. When comparing C. Comparing D. When compared 【答案】D 【解析】考察分词作状语用法。The biggest ocean与compare之间构成被动关系，使用过去分词。故D正确。可以认为在compared前面省略了it is. | 
