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
2025-03-07
35
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 does an astronaut put his hand under his belt when he sleeps?
选项
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.
答案
B
解析
事实细节题。文章最后两句提到,为了防止在睡眠中不小心触摸控制键,宇航员要将双手放在安全带下。
转载请注明原文地址:https://tihaiku.com/zcyy/3986983.html
相关试题推荐
Thislightbulbdoesn’twork.Canyou______itbyanotherone?A、substituteB、rep
Beyond______stars,thetwoastronautscouldseenothingbut______space.A、the
Beingabletospeakanotherlanguagefluentlyisagreat______whenyoulookfo
______theprogram,theyhavetostaythereforanothertwoweeks.A、Notcompleti
W:Theexperimenthasbeencompleted,hasn’tit?M:______A、Yes.Weneedanother
Asiswellknown,eatingtoomuchfatcan_____heartdiseaseandcausehighblo
Recentlyquitealotofexperts______thatanotherlawonwildlifeprotection_
Anotherview,lesswidelyheld,isthatincreasingparticularmatterintheatmo
I(enjoy)eating(good)restaurantsand(togo)tothetheater(afterwards).A、en
Onenteringanothercountry,atouristwillhaveto______theCustoms.A、passth
随机试题
Directions:Forthispart,youareallowed30minutestowritearesume.Yousho
Todaywearegoingtopracticeevaluatingthemaintoolusedwhenaddressing
Therearefivebasicfunctionsofanewspaper:toinform,toreview,topers
肺总容量等于()。A.潮气量+肺活量 B.余气量+肺活量 C.余气量+补吸
教学过程的特殊性表现在()。A.认识的间接性 B.认识的交往性 C.认识的
酒的能量来源有( )A.甲醇 B.乙醇 C.有机酸 D.矿物
一个口袋中有4个白球,1个红球,7个黄球.搅匀后随机从袋中摸出1个是白球的概率是
可定量检测抗原性物质的免疫学方法中,不属于标记免疫技术的是()。A.免疫比
操作风险成因中的系统缺陷因素主要包括()。A.计算机系统中断 B.违反系
(2020年真题)A公司是一家服装生产型企业,由外国私人投资兴办,成立于2000
最新回复
(
0
)