首页
登录
职称英语
Another thing an astronaut has to learn about is eating in space. Food is we
Another thing an astronaut has to learn about is eating in space. Food is we
游客
2024-01-18
31
管理
问题
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 instruments 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. [br] Why would astronauts cover each bite of food in space?
选项
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
事实细节题。文章第二段主要是解释食物要用塑料包起来的原因。在太空中由于不存在重力,食物就会到处移动,可能飞到人眼睛里或宇宙飞船的仪器中,引起麻烦。
转载请注明原文地址:https://tihaiku.com/zcyy/3372418.html
相关试题推荐
A、Theyliveinspace.B、TheymustobeythelawsofFrance.C、Theyareresponsibl
[originaltext] AnotherbombhasgoneoffinsouthernThailand,thefourthin2
[originaltext] AnotherbombhasgoneoffinsouthernThailand,thefourthin2
[originaltext] Oneofthebiggesttriggersforemotionaleatingisanger.Eati
[originaltext] Oneofthebiggesttriggersforemotionaleatingisanger.Eati
[originaltext] Thenumberonemistakepeoplemakethesedaysregardingeating
[originaltext] Thenumberonemistakepeoplemakethesedaysregardingeating
Thefisherman,______poor,couldnotbuyanotherboat.A、isB、wasC、beingD、been
Whenitcomestoeatingsmartforyourheart,thinkingaboutshort-termfi
Whenitcomestoeatingsmartforyourheart,thinkingaboutshort-termfi
随机试题
We’llwatcha(n)______telecastofafootballmatchtonight.A、livelyB、activeC
Inrecentyearsmanycountriesoftheworldhavebeenfacedwiththeproblem
Awell-meaningladygaveRobertawrong______andhefinishedatthetheatrein
______allthestudentshaveincommonis______theyworkveryhard.A、what;thatB
B
患儿,3个月前因结核病曾住院治疗。近3天来患儿易激惹,哭闹不止,频繁呕吐.嗜睡;
甲房地产开发公司(以下简称甲公司)开发了一个住宅小区。为促进住宅销售,甲公司制作
A.不能催吐 B.禁止洗胃 C.不能导泻 D.不能用强利尿剂 E.血液透
骨折病人长期卧床可发生( )。A.脂肪栓塞 B.创伤性关节炎 C.损伤性骨
某县安全生产监管局接到群众举报,反映一家烟花爆竹批发销售企业销售非法生产的烟花爆
最新回复
(
0
)