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 but also because of rays from the sun and other stars. The atmosphere ag
Space is a dangerous place, not only because of meteors but also because of rays from the sun and other stars. The atmosphere ag
admin
2015-01-30
48
问题
Space is a dangerous place, not only because of meteors but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket on earth. Light gets through, and this is essential for plants to make the food which we eat. Heat, too, makes our environments tolerable and some ultraviolet rays penetrate the atmosphere. Cosmic rays of various kinds 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 exposed 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 danger to explorers in space. The trouble is that it is extremely 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 until the birth of(deformed)children or even grandchildren.
Drugs might help to decrease the damage done by radiation, but no really effective ones have been found so far. At present, radiation seems to be the greatest physical hazard to space travelers, but it is impossible to say just how serious the hazard will turn out to be in the future.
Directions: Answer the following questions with the information given in the passage in a maximum of 10 words for each question.
According to the passage, what would our environment be without atmosphere?
选项
答案
Our environment would be intolerable.
解析
转载请注明原文地址:https://kaotiyun.com/show/PaVK777K
本试题收录于:
C类竞赛(非英语专业本科)题库大学生英语竞赛(NECCS)分类
0
C类竞赛(非英语专业本科)
大学生英语竞赛(NECCS)
相关试题推荐
Whichofthefollowingitalicizedphrasesindicatescomparison?
(1)Therobotsinmoviesandsciencefictionbooksthatriseuptotakeovertheworldgenerallyareabletodosobecauseweha
PassageSixWhatdoestheauthorthinkofthosenon-mainstreambrowsers’developmentprospect?
GesturesIntroduction.definition—motionsofthe【T1】________.function—toexpressorhelpexpressthoughtso
SuggestopediaⅠ.IntroductionA.DerivedfromsuggestionandpedagogyB.Acceleratingthelearningspeedtoabout【T1】
A、Shealwaysgoestobedearly.B、Sheisforbiddentopartiesbyherparents.C、She’sneverbeeninvitedbefore.D、She’sbeenst
A、Thisweekend.B、NextFriday.C、Tomorrow.D、Twodayslater.A由原文可知,男士打算在本周末举行派对。因此答案为A。
Atfirstthecompanyrefusedtopurchasetheequipment,butthisdecisionwas________revised.
Itwasduringsummerbreaksthatwefirsttastethesatisfactionof________workintomoney.
【B1】______Manyofthesecustomsincludestoriesandbeliefsrelatedtocreatures,realormagical,takingtheteeth.InAsia,fo
随机试题
用AgNO3测定Cl-时,水中存在的碘化物、溴化物和氟化物都会消耗AgNO3,但一般水中含量很少,对测定结果无多大影响。
心理测验
A.涩味B.甘味C.酸味D.苦味E.咸味火和土元生成
用实物法编制施工图预算所需的主要依据有()。
一般墙体大模板在常温条件下,混凝土强度最少要达到()时即可拆模。
适用于施工过程中必须发生,但在投标时很难具体分项预测,又无法单独列出项目内容的措施费的计算方法是()。
债券票面上的基本要素有()。Ⅰ.债券的票面价值Ⅱ.债券的到期期限Ⅲ.债券的票面利率Ⅳ.债券的发行者名称
位于市区的某动漫软件公司为增值税一般纳税人,2016年7月经营业务如下:(1)进口一台机器设备,国外买价折合人民币640000元,运抵我国入关地前支付的运费折合人民币42000元、保险费折合人民币38000元,人关后运抵企业所在地,取得运输
下列循环体的执行次数是()。#include<stdio.h>main(){inti,j;for(i=0,j=1;i<j+1;i+=1,j--)printf("%d\n",j);}
下列软件中,属于系统软件的是()。
最新回复
(
0
)