1 . 根据汉语提示完成对话
M: I’m reading an interesting report on Mars.
W: Oh, what does it say? Does it say water could still     1    　(在火星地表下存在)?
M: Absolutely! It says there is water on Mars     2     (埋在地表下的). It’s just a matter of how deep it is.
W: Then could the soil on Mars somehow be fertile enough to grow simple plants?
M: The soil would need quite a bit of fertilizer to grow anything. And it would       3     (需要被保护) from the UV radiation.
W: One of the most exciting things about Mars is that there could have been life on it.     4    　(你个人的观点是什么) on the life on Mars theory?
M: Well, I’m not really an expert in this area, but my understanding is     5     (一切皆有可能).

2 . 根据课文内容填空

Some people believe that space exploration is a waste of time and the     1    . Then why do humans still explore space? 

It is humans’     2     about the unknown that leads humans to explore space continuously. Space exploration helps better understand the     3     and the origin, evolution and future of the     4    . Humans’ lives have become     5     through space exploration, which will probably provide     6     for humans in many areas. Space exploration can bring great     7     and attract young to take up     8     concerning it. Wonders in space exploration can provide children with     9     and motivate them to become the scientists and     10     of the future.