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 The astronaut is so tired that he ______ for eleven hours.

A. has been asleep    B. has fallen asleep     C. has gone to bed       D. has gone to sleep


【答案】A

【解析】考查现在完成的用法。for eleven hours指一段时间,不可以用短暂性动词,be asleep指“睡着”的状态,fall asleep指“睡着”的动作 ,所以选择答案A。


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