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 atmosphere
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
admin
2012-09-19
95
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 atmosphere again acts【C1】______our protective blanket on【C2】______. Light gets through, and this is essential【C3】______plants to make the food which we【C4】______. Heat,【C5】______, makes our environments tolerable and some ultraviolet rays(紫外线)penetrate the【C6】______. Cosmic(宇宙的)rays of various kinds come【C7】______the air from outer space, but【C8】______quantities of radiation from the sun are screened off.【C9】______men leave the atmosphere they are【C10】______to this radiation;【C11】______their spacesuits or the walls of their spacecraft, if they are inside,【C12】______prevent a lot of radiation damage. Radiation is the greatest known danger to explorers in【C13】______Doses of radiation are measured in【C14】______called "rem(雷姆)". We all【C15】______radiation here on earth from the sun, from cosmic rays and from radioactive minerals. The"【C16】______dose of radiation that we receive each year is about two milligrams; it【C17】______according to where you live, and this is a very rough estimate. Scientists have reason to think【C18】______a man can【C19】______far more radiation【C20】______without being damaged; the figure of 60 rems has been agreed.
【C11】
选项
A、but
B、because
C、so
D、so that
答案
A
解析
本句前半句的意思是:“人们一离开大气层就会接触射线”;后半句意思是:“他们的太空服和太空船会阻止射线造成的损害”。前后应该是转折关系,故用but。
转载请注明原文地址:https://kaotiyun.com/show/Tw57777K
0
大学英语四级
相关试题推荐
Spaceisdangerousplace,notonlybecauseofmeteors(流星)butalsobecauseofraysfromthesunandotherStars.Theatmospherea
AdetailedandthoroughresearchprojectundertakenbytheOpenUniversityrecentlyreportedthattheirevidenceappearstoshow
Nothingcanbewasted,andweare____________(从不为有多余的食物困扰)becausewehaveneverhadany.
Duringrecentyearswehaveheardmuchabout"race":howthisracedoescertainthingsandthatracebelievescertainthingsand
Duringrecentyearswehaveheardmuchabout"race":howthisracedoescertainthingsandthatracebelievescertainthingsand
Duringrecentyearswehaveheardmuchabout"race":howthisracedoescertainthingsandthatracebelievescertainthingsand
A、Becausetheyhavehighlevelquality.B、Becausethey’reabletosellAmericanculturebyusingallthemediatheycan.C、Becau
A、Thecitycanbealonelyplace.B、Lifeinthewestcanbeverydangerous.C、Peopleinthewestarefondofanimals.D、Thedog
随机试题
对桥本甲状腺炎有诊断意义的自身抗体是
氮质血症是指
工厂生产过程中产生的生产性粉尘,需使用除尘器进行除尘。下列粉尘的理化性质中,对除尘器除尘效率影响最大的是()。
20×7年度报告,A、B、C三家股份有限公司发生如下有关业务:(1)20×7年1月1日,A、B两家股份有限公司分别以银行存款4000万元和6000万元投资设立一家D有限责任公司,D有限责任公司的注册资本为10000万元;A、B股份有限公司占D有限责
根据旅游突发事件的性质、危害程度及可控性以及造成或者可能造成的影响,旅游突发事件一般分为()。
牛奶中乳糖含量一般为()g/100g。
教学评价是教与学活动中一个重要组成部分。对教学评价理解恰当的是()。
单质铁溶于一定浓度的硝酸溶液中反应的离子方程式为:aFe+bNO3-+cH+====dFe2++fFe3++gNO↑+hNO2↑+kH2O。下列有关推断中,不正确的是()。
下列叙述中正确的是()。
Directions:Readthetextsfromallarticlesinwhich5peopletalkedaboutadvertisement.Forquestions61to65,matchthena
最新回复
(
0
)