首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Another thing an astronaut has to learn about is eating in space. Food is weightless, just as men are. Food for space has t
Another thing an astronaut has to learn about is eating in space. Food is weightless, just as men are. Food for space has t
admin
2018-02-03
43
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 traveling 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.
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://jikaoti.com/ti/vAGYFFFM
0
成人本科学位英语
相关试题推荐
Increasingly,overthepasttenyears,people—especiallyyoungpeople—havebecomeawareoftheneedtochangetheireatinghabit
Anotherthinganastronauthastolearnaboutiseatinginspace.Foodisweightless,justasmenare.Foodforspacehast
Forthispart,youareallowedthirtyminutes60writeacompositiononthetopic"AnIncreasingNumberofPeopleareStudyingf
Ihearmanyparentscomplainthattheirteenagechildrenarerebelling.Iwishitwereso.Atyourageyououghttobegrowinga
TodaytheofficiallanguageoftheUnitedStatesandmostofCanadaisEnglish.However,Frenchalmostbecametheofficiallangu
Nowadaysmoreandmoreforeignenterprisesandcompaniesarenolonger【C1】______oninterviewsforrecruitment.Yearsofstudying
JamesClevelandOwenswasthesonofafarmerandthegrandsonofblackslaves.HisfamilymovedtoClevelandwhenhewas9.The
Mike:It’sagreatmovie.I’11gowithyou.Grice:Great.Butwemustleavenowifyoudon’twanttomissthebeginning.Mike
Ifworkershadbeenpaiddecentwages,profits______sogreat.
W:Thisbookisgreat.Ican’tputitdown.M:______
随机试题
板桩建筑物中锚碇板一般是预制的钢筋混凝土板块,它的断面形状主要有()。
甲、乙、丙合作创作一首歌曲。甲欲将该作品交某音乐期刊发表。乙以该期刊发表过批评其作品的文章为由表示反对。丙未置可否。下列有关该事件的表达中正确的是()。A.如果乙坚持反对则甲不能将作品交该期刊发表B.甲有权不顾乙的反对而将作品交该期刊发表C.
膀胱挛缩的诊断标准为
A.缺铁性贫血B.巨幼红细胞性贫血C.恶性贫血D.溶血性贫血E.再生障碍性贫血维生素K1可引起
屋面防水工程应由()施工。
物业服务固定资产指在物业服务小区内由物业服务企业拥有的、与物业服务直接相关的、使用年限在()年以上的资产。
以下劳动关系中,哪个不适用劳动法的规定?()
武昌起义
下列描述中正确的是
Sevenyearsago,anEnvironmentalProtectionAgencystatisticianstunnedresearchersstudyingtheeffectsofairpollutiononhe
最新回复
(
0
)