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 Nature reserves are very important for preserving many animals and plants, which would _______ run the risk of becoming extinct.

A. otherwise                   B. therefore                     C. though                      D. instead

 

【答案】

A

【解析】

試題分析:A否則,要不然;B因此;C然而;D代替,而不是;句意:對于保護很多野生動植物來說自然保護很重要,要不是這些動植物會有滅絕的危險。根據句意說明A項符合上下文。

考點:考察副詞詞義辨析

 

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