题目内容
The journey to Mars takes months because the spacecraft flies too slowly.
A. first of all B. in the future C. at present D. in the past
C 【解析】句意:目前去火星的旅行花费几个月的时间,因为宇宙飞船飞行地太慢了。A. first of all首先;B. in the future在未来;C. at present目前;D. in the past在过去。根据谓语动词takes可知,这里叙述的是现在的事情,故选C。
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