一、选用方框内的单词或词组填空，其中有一个单词或词组是多余的。
air tank tent sleeping bag helmets on Mars gravity
1. When people drive motorbikes, they must put on ______________.
2. —What do you think of life ______________?
—It is interesting, but I don’t want to live there.
3. The old man can’t breathe smoothly; we should give him a(n) ______________.
4. We may need to wear special boots because of the problem of ______________.
5. Tom went camping with us and taught us how to put up a ______________.

1. helmets 2. on Mars 3. air tank 4. gravity 5. tent

二、根据句子意思，用括号中所给单词的正确形式填空。
1. Have you ever think about ____________（travel）into space?
2.（2023·江苏扬州邗江一模）There are many different kinds of fresh and ____________（dry）fruits on sale in that fruit shop.
3. I want a ____________（sleep）bag for the coming trip.
4. It’s reported that there’s no fruit ____________（and）vegetables on Mars.
5. We need to wear special boots to make us heavier because there is ____________（little）gravity on Mars.

1. travelling 2. dried 3. sleeping 4. or 5. less

( )1. When spring comes, it’s nice to take some ________ and go hiking in the hills.
A. dried food B. power pack C. space helmet D. air tank

1. A 【点拨】根据“it’s nice to take some ________ and go hiking in the hills”和备选词汇可知，带上干粮去远足，dried food“干粮”符合语境。故选 A。

( )2. I ________ Linda’s cousin was from Canada. In fact, he is American.
A. think B. am think C. thought D. will think

2. C 【点拨】句意：我原认为琳达的表弟来自加拿大，但实际上他来自美国。thought 原认为。故选 C。

( )3. As we all know, it’s very difficult for us ________ Mars.
A. to live B. to live in C. living on D. to live on

3. D 【点拨】It’s+形容词+for sb. +to do sth. 意为“做某事对某人来说是……的”；live on Mars 生活在火星上。故选 D。

( )4. The funny man can’t get ________ his food because of his helmet.
A. in B. at C. to D. for

4. C 【点拨】表示“够到”要用 get to。故选 C。