首页
登录
职称英语
Space is a dangerous place, not only because of meteors but also because of
Space is a dangerous place, not only because of meteors but also because of
游客
2024-08-17
32
管理
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. [br] When will the damage be discovered?
选项
答案
Radiation damage may show only in later generation.
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3723392.html
相关试题推荐
Shewasonher______throughoutthejobinterviewbecauseshedidn’twanttosay
Whyshouldweneveraskballoonsforadvice?Becauseitisfullofhotair(hotai
原来男人明白要走成一条直线,最有效的方法是不要看着脚,要把眼睛注视着前方的目标。(notto…butto)Itwasbecausethemankn
Spaceisadangerousplace,notonlybecauseofmeteorsbutalsobecauseof
Spaceisadangerousplace,notonlybecauseofmeteorsbutalsobecauseof
Spaceisadangerousplace,notonlybecauseofmeteorsbutalsobecauseof
大多数环境污染问题的存在,是因为过去没有采取适当的保护措施。(because)Mostenvironmentalproblemsexistbecause
由于他父母不同意他主修体育,威廉只得把土木工程作为第二选择。(majorin)Becausehisparentsdidn’tapproveofhi
Wemustmake______forhisaction,becauseheistooyoung.A、alternationB、prepar
Themanagementofthecompanyisgettingworsebecausetheregulationsarenot__
随机试题
Whichofthefollowingismostfrequentlyregardedasareferencerateofintere
[originaltext]M:Well,hi,Mrs.Brown.How’syourapartmentworkingoutforyou
主从同步法的缺点有()。A.主站时钟源发生故障时,全网将失去同步 B.主站时钟
伤亡事故处理工作应当在()日内结案,特殊情况不得超过()日。A.90,180
甲公司于6月5日以传真方式向乙公司求购一台机床,要求“立即回复”。乙公司当日回复
下面某教师为“抗日战争”一课设计的PPT: 问题: (1)请
共用题干 第一篇 CrystalEarOnedayafriendas
延安时期,毛泽东写下了著名的《实践论》、《矛盾论》,主要是为了克服党内严重的(
目前,履历分析技术的一个最新发展是()。A.目标履历分析法 B.过程履历
当平均总成本随产量的增加而下降时()。A.边际成本大于平均总成本 B.边际成
最新回复
(
0
)