The ozone layer plays as great a role in the stability of spaceship Earth as______the waters of its lakes, ponds, oceans, rivers

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问题 The ozone layer plays as great a role in the stability of spaceship Earth as______the waters of its lakes, ponds, oceans, rivers, and streams.

选项 A、do
B、does
C、play
D、are

答案A

解析 句意:臭氧层在维持太空船地球的稳定性方面具有很大作用,同湖泊、池塘、海洋及河流的作用一样大。本题考查助动词+主语构成的倒装结构,强调主语,省略主要动词,waters为复数,因此应当用do的原形。
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