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
Space is a dangerous place, not only because of meteors(流星)but also because of rays from the sun and other stars. The【B1】_____ a
Space is a dangerous place, not only because of meteors(流星)but also because of rays from the sun and other stars. The【B1】_____ a
admin
2013-05-12
24
问题
Space is a dangerous place, not only because of meteors(流星)but also because of rays from the sun and other stars. The【B1】_____ again acts as our protective blanket on earth Light gets through, and this is【B2】_____ for plants to make the food which we eat. Heat, too, makes our environment【B3】_____. Various kinds of rays come through the air from outer space, but enormous quantities of radiation from the sun are【B4】_____ off. As soon as men leave the atmosphere they are exposed to this【B5】_____ and their spacesuits or the walls of their spacecraft, if they are inside, do【B6】_____ a lot of radiation damage.
Radiation is the greatest known danger to【B7】_____ in space. The unit of radiation is called "rem". Scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is【B8】_____ difficult to be sure about radiation damage—【B9】______, and this will not be discovered until the birth of deformed children or even grandchildren. Missions of the Apollo flights have had to cross belts of high amounts of rems.【B10】______, we simply do not know yet how men are going to get on, when they spend weeks and months outside the protection of the atmosphere, working in a space laboratory. Drugs might help to decrease the damage done by radiation,【B11】______
【B3】
选项
答案
endurable
解析
转载请注明原文地址:https://kaotiyun.com/show/CAB7777K
0
大学英语六级
相关试题推荐
A、Excellent.B、Hardtoswallow.C、Betterthanbefore.D、Dirty.C语义理解题。女士本以为换了厨师,学校餐馆就能提供好点的饭菜;男士说他告诉过女士她太乐观了。由此可知,女士曾经认为学校餐馆的食物会
Formostofus,thepurposeoftheholidaysistobringpeace,love,andgoodwilltowardsall.Yet,formany,theholidayseason
Livingstandardshavesoaredduringthe21stcentury,andeconomistsexpectthemtocontinuerisinginthedecadesahead.Doest
A、Theywerecontrolledlessstrictlybytheauthorities.B、Theytreatedtheirworkersmorehumanely.C、Theycompletelyignoredc
TheAmericanwarondrugshasgottenallthetypesinrecentyears,butalcoholismisstillthenation’smostseriousaddiction.
A、It’suseless.B、It’sunnecessary.C、It’sdoubtful.D、It’shelpful.D
Growingup,Iearnedmybestmarksforplayingwellwithothers.Formyhusband,Ilivedinthreedifferentcountriesinfiveye
CaloriesForyearsnow,calorieshavebeenalltherage--peoplearecountingthemandcuttingthem,andyou’dbehard-press
A、Itisinthecenterofthecampus.B、Itshouldhaveamapofthecity.C、Ithasinformationaboutsummercamps.D、Itprobably
Theatreandreligionarecloselyrelatedinthat______.ThetheatreofAbsurdhasprobably______.
随机试题
帝场信息有哪两个主要来源?
心理评估常用方法不包括
下列对离婚案件的诉讼管辖的表述中正确的有哪些?()
《安全生产法》规定,负有安全生产监督管理职责的部门依法对生产经营单位的安全生产情况进行监督检查时,可以行使的职权有()。
下列关于我国期货交易的说法,正确的是()。
一般资料:求助者,男性,38岁,私营企业总经理。案例介绍:求助者有一天到儿子的学校开家长会,遭老师当众批评,心烦、燥热,突然觉得透不过气来。胸闷、心慌,非常难受,认为自己得了心脏病,因此非常紧张、害怕,手脚发麻,浑身颤抖。求助者迅速离开学校,乘出
Internet中不同网络和不同计算机相互通信的基础是
【B1】【B5】
AnumberofbookslikeReadingFacesandBodyLanguagehave【C1】______theindividual’stendencytobroadcastthingsthroughallm
Ingeneral,oursocietyisbecomingoneofgiantenterprisesdirectedbyabureaucraticmanagementinwhichmanbecomesasmall,
最新回复
(
0
)