Question

【题目】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

Answer 1

【答案】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。