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
2013-01-20
53
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. As【C9】______as 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 "rems(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 100 millirems; it【C17】______according to where you live, and this is a very rough estimate. Scientists have reason to think【C18】______a man can【C19】______up with far more radiation【C20】______this without being damaged; the figure of 60 rems has been agreed.
【C11】
选项
A、but
B、because
C、so
D、for
答案
A
解析
逻辑衔接题。本句的前半句意为“人们一离开大气层就会暴露于射线之中”,后半句意为“他们的太空服和太空船会阻止射线造成的损害”,由此可知,前后应该是转折关系,所以A正确。
转载请注明原文地址:https://kaotiyun.com/show/k9u7777K
0
大学英语四级
相关试题推荐
Forsometimepastithasbeenwidelyacceptedthatbabies—andothercreatures—learntodothingsbecausecertainactsleadto"
Whenyouthinkaboutthegrowthofhumanpopulationoverthelastcenturyorso,itisalltooeasytoimagineitmerelyasani
A、Tohavearest.B、Toseeadoctor.C、Totakecolddrugs.D、Tolistencarefully.A由男士提到的…becauseofthesecolddrugsI’mtaking
AreYourKidsEatingJunk?DevelopHealthyEatingHabitsInYourChildrenTheotherdayIwatchedaveryinf
ShouldTeachersTakePart-timeJobs?1.有人认为应禁止教师兼职或办辅导班2.有人则认为不应该禁止3.你的看法
A、Becausesheiswell-informedwithredfoxes.B、Becausesheoncevisitedtheredfoxnationalpark.C、Becauseshemajorsinani
DoctorsinBritainarewarningofanobesitytimebomb,whenchildrenwhoarealreadyoverweightgrowup.So,whatshouldwedo?
ForanygiventaskinBritaintherearemorementhanwomenareneeded.StrongunionskeepthemthereinFleetStreet,homeofs
ForanygiventaskinBritaintherearemorementhanwomenareneeded.StrongunionskeepthemthereinFleetStreet,homeofs
随机试题
哪项符合原发性心肌病
关于缺铁性贫血的铁剂治疗,以下说法正确的是
多尿是指24h排尿量多于
对城镇体系规划的类型描述错误的是()
某股份有限公司2005年4月1日,以1473万元的价款购入面值为1500万元的债券进行长期投资。该债券系当年1月1日发行,票面年利率为6%,期限为3年,到期一次还本付息。为购买该债券,另发生相关税费共计6.75万元(假定未达到重要性要求)。该债券折价采用直
某社会工作机构近年来致力于外来务工青年的职业生涯发展服务。在上年度的项目总结报告中,有如下文字:“超过70%参与项目的外来务工青年在职业理想觉察意识、职业认知程度、当下生活处境认知、未来职业发展动力等方面明显改善。”此表述体现了该机构对此项目的()
国外某著名导演新拍了一部反映19世纪社会生活的电影,以下是电影中出现的一些镜头,其中错误的是()。
在成绩中要查找成绩≥80且成绩≤90的学生,正确的条件表达式是()。
Whendoesthisconversationtakeplace?
A、Theyarebornwiththeabilitytointeractwithhumans.B、Theyarefrequentlytrainedbydoggyparents.C、Theyacquiretheabi
最新回复
(
0
)