[题目]By the middle of the 21st century, the vast majority of the world's population in cities rather than in the country.A. are living B. will be livingC. have lived D. will have lived 题目和参考答案——青夏教育精英家教网—

题目内容

【题目】

By the middle of the 21st century, the vast majority of the world's population __________ in cities rather than in the country.

A. are living

B. will be living

C. have lived

D. will have lived

【答案】B

【解析】句意：到21世纪中叶，绝大多数的世界人口将居住在城市而不是乡村。will be living表示将来这个时候人们正在进行的动作；will have lived表示在这个时间之前，这个live的动作已经延续了多久了。因为是对人们在未来某个时间住在哪儿的主观猜测，因此用将来进行时。

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