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 eatingin space. Food is weightless, just as men are. Food for space has to
Another thing an astronaut has to learn about is eatingin space. Food is weightless, just as men are. Food for space has to
admin
2018-09-25
57
问题
Another thing an astronaut has to learn about is eatingin 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://kaotiyun.com/show/xR3O777K
0
成人本科学位英语
相关试题推荐
AtfirstKatethoughttheRomaniangirlcouldnotspeakandunderstandEnglish.NadiawouldnotreplytoanythingKatesaid.Kat
YournervesystemreactsAtoBwhatyouimaginetobetrueConmuchthesamewaythatitDdoestorealexperiences.
TheannualcampaigntomakeSingapore’sthreemillionpeoplemorepoliteendedyesterdayandwasimmediatelyfollowedbyanother
TheannualcampaigntomakeSingapore’sthreemillionpeoplemorepoliteendedyesterdayandwasimmediatelyfollowedbyanother
SpeakerA:Thisappletastesnice.CouldIhaveanotherone?SpeakerB:______
Muchunfriendlyfeelingtowardscomputershasbeenbasedonthefearofwidespreadunemploymentresultingfromtheirintroductio
ThethemeoftheInternationalLiteracyDaythisyearistheconnectionbetweenliteracyandsustainabledevelopment.Literacyh
Ascomputersystemsbecomeevenmoresophisticated,______themethodsofthosewhoexploitthetechnology.
Thankstothemeansofmoderntransportationandcommunication,theworldisgettingsmaller.Thewholeworldcommunityappears
随机试题
在组织文化的维系过程中,起着特别重要作用的要素是甄选过程、高层管理人员和()
孙某,因足部感染,需用青霉素治疗,在做皮试时,突然发生过敏性休克,其原因可能是
财务报表应当以()为截止日。
地陪在参观点担任翻译时,如果主人的表达中有不妥之处,地陪在翻译前应()。
下列有关现代汉语字形的说法,错误的是()。
第二次世界大战时,美英空军对德国展开大轰炸,自身也损失惨重。专家们发现,所有返回的飞机腹部都遍布弹痕,但机翼却完好无损。他们由此推断:机腹非常容易受到炮火攻击,应该改进机腹的防护。后来证实,这些专家推断时受到“幸存者偏差”的影响,冈为实际情况是:被击中机翼
下列关于球形红细胞的叙述,正确的是
进行分斋教学,主张以兵、农、钱、谷、水、火、工、虞为教育内容的启蒙思想家是()
Thequestionofwhetherwarisinevitableisonewhichhasconcernedmanyoftheworld’sgreatwriters.Beforeconsideringthis
HazelaskshowonecanstayhealthyworkingthehoursI’vebeenworking.Here’sonethingthathelps:don’tdoitforever!Mywo
最新回复
(
0
)