【題目】— Are you willing to live on Mars one day?

— It sounds exciting,but it still worries me.

A. Of course I am.B. I’m not sure.

C. Why not?D. Are you joking?

【答案】B

【解析】

句意：——有一天你愿意在火星上住嗎?——我不確定。聽起來很刺激，但是它仍然使我很擔心�？疾榻浑H用語。A. Of course I am. 當然是，表示同意； B. I’m not sure. 我不確定； C. Why not? 為什么不呢? 表示同意；D. Are you joking?你在開玩笑嗎?表示質(zhì)疑。根據(jù)It sounds exciting,but it still worries me.可知I’m not sure.符合語境，故選B。

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