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
25
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.
【C17】
选项
A、shifts
B、converts
C、modifies
D、varies
答案
D
解析
词义辨析题,shift 意为“移动”,convery 意为“转换”,modify 意为“修改”,vary 意为“变化”,结合句意可知,所处地点不同,所受辐射量也不一样,所以D正确,考点 convert 和change 意思相同,但convert 通常指“从某种状态、某种用途、某种意向转变为另一种状态、用途和意向”,如水化为蒸汽、荒地变为良田、化喜为悲、改变信仰等,change 是最通俗的词,可以指各方面的改变,modify相当于make different,多用于指“修改计划、契约,改变方法、制度等”,如:The terms of the contract have been modified.该合同的条款已经修改过了,shift 强调转换,指“由一个人或结构到另一个的转变,或位置的变换、更替等”,如:The teacher shifted the chairs around in the classroom. 那位教师挪动了教室里的椅子
转载请注明原文地址:https://jikaoti.com/ti/OWwFFFFM
0
大学英语四级
相关试题推荐
Itisnaturalforyoungpeopletobecriticaloftheirparentsattimesandtoblamethemformostofthemisunderstandingsbetw
Internetdatashowsthatyoungeradultshavebecometheprimaryaudienceobsessed(着迷)withalteringtheirpersonalappearance.
A、Takeadeepbreathandtrytoforgetyournervousness.B、Drawbackfromthegroupandtrytocalmdown.C、Lookforthepeople
A、HerIDcardandpassport.B、Herpersonalreferences.C、Hersocialsecuritynumber.D、Hercoverletter.B选项中的HerIDcard,Herpe
StepstoMoreHappinessTurningPointsThereis,formanyofus,amomentinlifewhenwemakeachoicethatchangesusfore
StepstoMoreHappinessTurningPointsThereis,formanyofus,amomentinlifewhenwemakeachoicethatchangesusfore
GratefulPeopleAreHappierandHealthierItturnsoutthatgivingthanksisgoodforyourhealth.Agrowingbodyofresearc
AsanotheractivehurricaneseasonintheAtlanticwindsdown,someatmosphericscientistssaytheyhavethetoolstostoporsl
A、Becausehehasbeenexercising.B、Becausehehaspulledamuscle.C、Becausehehaswornhimselfout.D、Becausehehasbeento
A、Becausetheywanttoprotectthetrees.B、Becauseitisatradition.C、Becausetheylovenature.D、Becausetheyhavenofamily
随机试题
A、3,000m.B、3,000km.C、6,000m.D、6,000km.A女士问钻井机实际挖到了多深,男士回答说大概3000米。后面他又补充道,他们在3000米这个位置还发现了生物体,后面提到这些生物体其实就是前面所说的远在地表下的细菌,所以本
测量牙周袋的深度,正确距离是
值得注意的是,如果无形收益已通过有形收益得到体现,如在当地能显示其形象、地位的写字楼,那承租者用该写字楼办公可显示其实力,该因素往往已包含在该写字楼的()中,则不必单独考虑,以免重复。
中国城镇住房制度改革大致经历了下列三个阶段,下列不属于住房制度改革的阶段是()。
根据我国招标投标法的规定,两个以上法人或者其他组织组成的一个联合体,以一个投标人的身份共同投标的是( )。
关于质量监督小组的说法,错误的是()。
经过公证的赠与合同,赠与人不交付赠与财产的,受赠人()。
当前,世界主要国家普遍把加强对外传播作为增强国家文化软实力的重要手段。近年来,美国利用社交网络开办了“推特中文版”,法国开播的“法兰西24”覆盖90多个国家。俄罗斯开设“今日俄罗斯频道”免费视频网站,中央电视台成为全球唯一用中、英、法、西班牙、俄、阿拉伯6
阅读以下关于数据库分析与建模的叙述,在答题纸上回答以下问题。【说明】某电子商务企业随着业务不断发展,销售订单不断增加,每月订单超过了50万笔,急需开发一套新的互联网电子订单系统。同时该电商希望建立相应的数据中心,能够对订单数据进行分析挖掘,以便更好地服
Singleandlookingforlove?Howaboutadvertisingyourselftomillionsofpossiblepartners?Forabout£100aweek,youcanhave
最新回复
(
0
)