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
A. endurable B. protection C. exposed D. if E. until F. extremely G. acts as H. decrease I. curable J. disaster K. attributed L.
A. endurable B. protection C. exposed D. if E. until F. extremely G. acts as H. decrease I. curable J. disaster K. attributed L.
admin
2017-06-17
35
问题
A. endurable B. protection C. exposed D. if E. until
F. extremely G. acts as H. decrease I. curable J. disaster
K. attributed L. danger M. effective N. before O. essential
Space is a dangerous place, not only because of meteors(流星)but also because of rays from the sun and other stars. The atmosphere again【C1】______ our protective blanket on earth. Light gets through, and this is【C2】______ for plants to make the food we eat. Heat, too, makes our environment【C3】______. Various kinds of rays come through the air from outer space, but enormous quantities of radiation from the sun are screened off. As soon as men leave the atmosphere they are【C4】______ to this radiation but their spacesuits or the walls of their spacecraft, if they are inside, do prevent a lot of radiation damage.
Radiation is the greatest known【C5】______ to explorers in space. The unit of radiation is called "rem (雷姆)". Scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged. The trouble is that it is【C6】______ difficult to be sure about radiation damage—a person may feel perfectly well, but the cells of his or her sex organs may be damaged, and this will not be discovered【C7】______ the birth of deformed children or even grandchildren.
We simply do not know yet how men are going to get on when they spend weeks and months outside the【C8】______ of the atmosphere, working in a space laboratory. Drugs might help to【C9】______ the damage done by radiation, but no really【C10】______ ones have been found so far.
【C1】
选项
答案
G
解析
空格所在句缺少谓语,再根据全文的时态和主语The atmosphere,可知此处应填入动词的第三人称单数形式。备选项中acts as“充当,起……的作用”,符合句意,即大气层起到了地球保护毯的作用。
转载请注明原文地址:https://kaotiyun.com/show/DxDK777K
0
专业英语四级
相关试题推荐
Highereducationisn’tforeveryone,andpeoplehaveavarietyofpathstochoosefromoncetheygraduatefromhighschool.They
ThewomanlovetoliveinthecityforthefollowingreasonsEXCEPTthat
Whatshouldbedoneinordertofeedalargepopulation?
AccordingtoastudypublishedthisweekinthejournalEcologyLetters,thequantityofbirdsinEuropehasdeclinedbymoreth
A、Heshouldbeanexcellentteamplayer.B、Heshouldcooperatewithassistantengineersasateam.C、Heshouldtreatmaleandfe
[A]pleasure[B]going[C]psychological[D]directly[E]succeeds[F]trouble[G]specializes[H]keep[I]mood[J]decrease[K]suggests[
A、Shehasn’tsentresumesyet.B、Shehasn’tgotanyrepliesyet.C、Shehasgotsomenewchances.D、Shehasalreadysignedacont
Who______wascomingtoseemeinmyofficethisafternoon?
In1943Germany’ssubmarines—theU-boats—werewinningthebattleoftheAtlantic.SuddenlyGermany’sU-boatlossesdoubledi
StrikesanddemonstrationsinGermany,BritainandFrancehelpedtomaketheshorterworkingweekaunionpriority.Employersga
随机试题
肝其华在心其华在
下列关于变制冷剂流量(VRV)空调系统设置的说法,正确的是________。
以下关于项目内部收益率指标的说法正确的是()。
从事生产、经营的纳税人外出经营,存同一县(市)实际经营或者提供劳务之日起,在()的,应当在营业地办理税务登记手续。
()认为,心理发展既不是起源于先天的成熟,也不是起源于后天的经验,而是起源于主体的动作。
有人认为简政放权应该停止了,你怎么看?
互联网给人类带来无限便利的同时,也给人们带来很多烦恼。对于有孩子的家庭,来自网络信息正反两方面的诱惑都很大。孩子上网的时间长了,会影响视力和学习,更令家长担心的是来自互联网的色情、游戏、暴力等方面的副作用。因此,家长应对孩子上网予以指导和约束。下列做法与上
IndeferencetoaworldenthralledbyshowslikeExtremeMakeoverandKeepingUpWiththeKardashians,thepublicschooldistric
Codeswitchingiswhenpeopleswitch,orchange,fromonelanguagetoanotherwhilespeaking.Theymightbeginaconversationin
Aninsuranceagentcalledmethismorning.Thisparticularagentwantedtodiscussmyautomobilecoverage,butthenextagentto
最新回复
(
0
)