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 to
Another thing an astronaut has to learn about is eating in space. Food is weightless, just as men are. Food for space has to
admin
2015-11-16
39
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.
In a spaceship, astronauts can______.
选项
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 Utter small things or it will make trouble
答案
D
解析
推理判断题。可以用排除法。在宇宙中,由于失重,宇航员不可能像在地球上一样行走,所以A不对。因为食物也像宇航员一样失重,吃东西就会变得非常困难,而不存在危险,所以B也不对。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,因此他睡着的时候是不能控制宇宙飞船的,这样C也排除了。为了防止小东西由于失重飞到人眼睛里或机械中,宇航员是不能到处乱扔东西的,所以只有D是正确的。
转载请注明原文地址:https://kaotiyun.com/show/DURO777K
0
成人本科学位英语
相关试题推荐
Musiccomesinmanyforms;mostcountrieshaveastyleoftheirown.(56)themmofthecenturywhenjazzwasborn,Americahad
(Thoseofus)whoworkinchemical(laboratories),shouldhave(their)lungs(checked)quiteregularly.
Anotherthinganastronauthastolearnaboutiseatinginspace.Foodisweightless,justasmenare.Foodforspacehast
______workhasbeendonetoimprovepeople’slivingstandard.
Thoseexperimentshavelaidasolidfoundationforhis______researchinmaterialscience.
Lawsthatpunishparentsfortheirlittlechildren’sactionsagainstthelawsgetparents______.
Shetoldmethatshewasthenlivingina______.
Toooftenyoungpeoplegetthemselvesemployedquitebyaccident,notknowingwhatliesinthewayofopportunityforpromotion,
AlthoughEnglishisnotasoldasChinese,itisspokenbymanypeoplearoundtheworldeveryday.Englishspeakersarealway
Weallfeelsorryfor______forsolongafteryourarrival.
随机试题
心包穿刺常用穿刺部位有_________和_________。
(2001年第3题)细胞外液的K+浓度明显降低时,将引起
来源于姜科植物的药材有
梅毒病人的潜伏期为
《国务院关于加强环境保护重点工作的意见》指出的着力解决影响科学发展和损害群众健康的突出环境问题不包括()。
由氢化棕桐油30%、氧化橄榄油30%、初榨豆油40%组成的罐装食品油
()是指因宏观政策的变化导致的对基金收益的影响。
图1《受伤的野牛》出自旧石器时代洞穴壁画最闻名的()。
教师和学生在教育教学活动中为促进学生的整体发展和自主发展而结成的教育与被教育、组织与被组织、引导与被引导等主体间的关系是师生的()
甲、乙两辆汽车同时从A,B两站相向开出.第一次在离A站60千米的地方相遇.之后,两车继续以原来的速度前进.各自到达对方车站后都立即返回,又在距B站30千米处相遇.两站相距()千米.
最新回复
(
0
)