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 atmosphe
Space is a dangerous place, not only because of meteors (流星) but also because of rays from the sun and other stars. The atmosphe
admin
2013-02-24
42
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.
【C12】
选项
A、get
B、make
C、have
D、do
答案
D
解析
逻辑衔接题,空格所在句的主干为their spacesuits or the walls of their spacecraft prevent,可见该句并不缺少谓语,故排除A、B、C三项,而“助动词do+ 动词原形”刚好用于强调谓语动词,所以D正确
转载请注明原文地址:https://kaotiyun.com/show/Uju7777K
0
大学英语四级
相关试题推荐
Internetdatashowsthatyoungeradultshavebecometheprimaryaudienceobsessed(着迷)withalteringtheirpersonalappearance.
Internetdatashowsthatyoungeradultshavebecometheprimaryaudienceobsessed(着迷)withalteringtheirpersonalappearance.
Internetdatashowsthatyoungeradultshavebecometheprimaryaudienceobsessed(着迷)withalteringtheirpersonalappearance.
Internetdatashowsthatyoungeradultshavebecometheprimaryaudienceobsessed(着迷)withalteringtheirpersonalappearance.
StepstoMoreHappinessTurningPointsThereis,formanyofus,amomentinlifewhenwemakeachoicethatchangesusfore
StepstoMoreHappinessTurningPointsThereis,formanyofus,amomentinlifewhenwemakeachoicethatchangesusfore
A、TheshopsarenotcrowdedinDecember.B、Peopledisliketodoshoppinginbusyshopsinwinter.C、Manypeoplegoshoppingdesp
A、Becauseitcostalotofmoney.B、Becausethecouple’sparentsarefamous.C、BecausethePresidentwasinvitedtothewedding.
AsanotheractivehurricaneseasonintheAtlanticwindsdown,someatmosphericscientistssaytheyhavethetoolstostoporsl
A、Becausetheyarebusyservingfoodtotheirchildren.B、Becausetheyarebusykeepingorderatthedinnertable.C、Becausethe
随机试题
A.胸髓7~12节B.腰髓1~2节C.腰髓2~4节D.骶髓1~2节E.骶髓3~5节与踝反射有关的是
男,61岁,高血压病史8年,冠心病史4年,近1周来胸骨后疼痛程度加重,次数增频,持续时间延长来门诊。测血压24.4/15.9kPa(184/120mmHg),ECG示以R波为主的导联T波低平或倒置,心肌酶谱正常、为预防心肌梗死发生,下列处理哪项不正确
A.螳螂科B.鲍科C.乌贼科D.雉科E.芜菁科桑螵蛸的原动物属于
政府最初组织收入、弥补财政赤字的重要手段是( )。
客户方先生,目前就职于一家大型国企,但对养老保险知识知之甚少。随着年龄的增长,方先生开始越来越多地考虑自己退休以后的生活,于是就相关知识向理财规划师进行咨询。养老保险基金的结余除预留相当于()个月的养老金开支外,其余全部要购买国家债券或存入
股份有限公司以收购本企业股票方式减资的,按注销股票的面值总额减少股本,购回股票支付的价款小于面值总额的部分,依次冲减“资本公积”、“盈余公积”和“利润分配~未分配利润”。()
摒弃画家常用的工具、材料,常常把画布绷在地板上,用棍棒箍上油漆,任其在画布上流淌,用“行动绘画”的画家是()。
设y=y(x)由参数方程=__________,y=y(x)在任意点处的曲率K=__________。
WhatwilltheweatherinArizonabelikeinthecomingweek?
Thequestion______atthemeetingtomorrowisveryimportant.
最新回复
(
0
)