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河北2017.11成人學(xué)位英語考試通關(guān)試題及答案二

來源：233網(wǎng)校 2017年8月8日 ?????

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Another thing an astronaut has to learn about is eating in space. Food is weightless, just as men are.Food for space has to be packed in special ways. Some of it goes into tubes that a man can squeeze into his mouth. Bite-sized cookies are packed in plastic.

There is a good reason for covering each bite. The plastic keeps pieces of food from travelling in the spaceship. On the earth very small pieces of food would simply fall to the floor. But gravity doesn' t pull them to the floor when they are out of the plastic in a spaceship. They move here and there and can get into a man' s eyes or into the spaceship' s instruments. If any of the instru-ments is blocked, the astronauts may have trouble getting safely home.

As astronauts travel on longer space trips, he must take time to sleep. An astronaut can fit　himself to his seat with a kind of seat belt. Or, if he wants to, he can sleep in a sleeping bag which

is fixed in place under his seat. But be careful he must put his hands under the belt when he goes to sleep. This is because he is really afraid that he might touch one of controls that isn' t supposed to be touched until later.

16.Why would astronauts cover each bite of food in space?

A.Because small pieces of food would fall down to the floor.

B.Because weightless pieces of food might make trouble when they travel around.

C.Because they haven' t enough food for longer trips.

D.Because astronauts don' t want to waste food.

答案：B

解析：事實細節(jié)題。文章第二段主要是解釋食物要用塑料包起來的原因。在太空中由于不存在重力，食物就會到處移動，可能飛到人眼睛里或宇宙飛船的儀器中，引起麻煩。

17.In a spaceship, astronauts can

A.walk just as they do on the earth

B.not eat anything because it' s dangerous

C.control the spaceship when they are sleeping

D.not litter small things or it will make trouble

答案：D

解析：推理判斷題?？梢杂门懦?。在宇宙中，由于失重，宇航員不可能像在地球上一樣行走，所以A不對。因為食物也像宇航員一樣失重，吃東西就會變得非常困難，而不存在危險，所以B也不對。為了防止在睡眠中不小心觸摸控制鍵，宇航員要將雙手放在安全帶下，因此他睡著的時候是不能控制宇宙飛船的，這樣C也排除了。為了防止小東西由于失重飛到人眼睛里或機械中，宇航員是不能到處亂扔?xùn)|西的，所以只有D是正確的。

18.In what way is food for space packed?

A.Very small pieces of food are put on the floor.

B.Some of it is put into tubes.

C.Small-sized cookies are packed in plastic.

D.Both B and C.

答案：D

解析：事實細節(jié)題。段的后兩句指出，一些食物被放在管子里，小餅干則被用塑料包裝起來。

19.Why does an astronaut put his hand under his belt when he ~leeps?

A.Because he thinks it is comfortable to sleep in that way in space.

B.Because he doesn' t want to touch any controls when he sleeps.

C.Because the instruments of the spaceship are easily broken.

D.Because he is afraid that the seat will move.