If water becomes increasingly scarce in decades ______, water shortage will become a hot issue all over the world.

A. comingB. having comeC. to comeD. to be coming

 

【答案】

C

【解析】

試題分析：decades to come 未來的數(shù)十年，to come不定式作定語，表將來。

考點：非謂語動詞的用法

點評：解題思路，① 解析句子結(jié)構(gòu)，確定設空在句子中充當?shù)墓δ埽ㄈ鐮钫Z、定語或賓補）；②找準相關動詞的邏輯主語，確定該動詞與邏輯主語是什么關系（主動還是被動）；③ 搜索句子中相關的時間信息，確定非謂語動詞的恰當形式；④ 將該選項置入空中，看是否能夠做到字從意順，或是否能傳達有效信息、完成交際任務。

 

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