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

A．a(chǎn)re living          B．will be living        C．have lived         D．will have lived

 

【答案】

B

【解析】

試題分析：考查時(shí)態(tài)。根據(jù)本句的時(shí)間狀語(yǔ)by the middle of the 21st century說(shuō)明是一個(gè)將來(lái)時(shí)。陳述的是在將來(lái)的這段時(shí)間里所發(fā)生的事情，所以使用將來(lái)進(jìn)行時(shí)。句意：到21世紀(jì)中葉，大部分的人口都將生活在城里而不是在鄉(xiāng)下。故B正確。

考點(diǎn)：考查時(shí)態(tài)

點(diǎn)評(píng)：時(shí)態(tài)題的考查關(guān)鍵是抓住句中的時(shí)間狀語(yǔ)。要根據(jù)時(shí)間狀語(yǔ)來(lái)選擇合適的時(shí)態(tài)，在平時(shí)的學(xué)習(xí)中要注意積累有關(guān)時(shí)態(tài)的用法和各種時(shí)態(tài)的特殊之處。

 

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