首页
登录
职称英语
Another thing an astronaut has to learn about is eatingin space. Food is wei
Another thing an astronaut has to learn about is eatingin space. Food is wei
游客
2024-01-17
61
管理
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. [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/3371122.html
相关试题推荐
Anotherview,lesswidelyheld,isthatincreasingparticularmatterintheatmo
Onenteringanothercountry,atouristwillhaveto______theCustoms.A、passth
Theway(which)thedifferentkindsofrock(lie)ononeanother(helps)totell
除了英语,你最好再学一门外语。BesidesEnglish,you’dbetterlearnanotherforeignlanguage.
______productionupby60%,thecompanyhashadanotherexcellentyear.A、AsB、Fo
Recentlyquitealotofexperts______thatanotherlawonwildlifeprotection_
—Haveyouworkedoutthemathproblemyet?—Notyet.______anotherhour,Icanw
Takethisboxand______youcanfindenoughspace.A、putitwhichB、putupitwhic
Beingabletospeakanotherlanguagefluentlyisagreat______whenyoulookfor
Tom:Iseeinthepaperthey’resendingmoreequipmenttospace.Andwemightha
随机试题
______,knownas"theCityofAngels",isthesecondlargestcityintheUnited
Mr.Smithhascancelledhistripbecauseanurgentmatterhascomeupwhichrequ
Athleteswithadifferentkindandlevelofdisabilityarecompetingatthe
吴某系某纺织有限公司工人。2011年3月15日,吴某在下班途中与单某驾驶的机动车
DW的数据具有若干基本特征,下列不正确的是()A.面向主题的 B.集成的
证券公司营业部开展经纪业务时,下列属于业务人员禁止行为的是()。A.与客户权益
共用题干 患儿女,14岁。平时以罐头食品为主食,最近牙龈反复出血,皮下可见瘀斑
20×2年12月31日,某企业租入一台设备,租赁期为4年,合同约定该租赁物的产权
建筑施工单位,应当至少每()组织1次生产安全事故应急救援预案演练。A.一年
行颈、胸手术后,病人应采取的体位是() A.平卧位 B.侧卧位 C.高坡卧
最新回复
(
0
)