6. 以后坐宇宙飞船去火星花的时间更少。

5. 我从未想过承担风险的可能性。

4. 与北方的天气相比，这里的更好。

3. 地球三分之二的地方由水覆盖。

2. 人们想知道火星上的生活会成什么样。

四、 句子翻译

1. 我原以为你已经去过火星了。

      
   

3. —I feel really bad about this place. The people,the language...all these make me crazy!

——You’d better move to a new place to start over .

2. —Can the baby eat this apple?

—I'm afraid he can't unless it is cut in the of small pieces.

三、 根据对话内容，写出句中所缺单词

1. —Wow!Our car is running at a of 120 km/h!

52,That's too fast!Slow down!

6. The river is so (被污染的) that even no fish can be seen.