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
2023-10-18
54
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/3108814.html
相关试题推荐
"Lookatthoseprettygirls’skirts"is________,becauseitisnotclearwhether
Mostenvironmentalproblemsexistbecauseadequatemeasuresforpreventingthem_
Theonlychildisthoroughly________becausehisparentsalwaysgivehimwhatever
Veryfewpeoplecouldunderstandthelecturetheprofessordeliveredbecauseits
Thiskindofworkishardanddangerous.But________,youwouldbecomerich.A、wo
I________tohimbecausehephonedmeshortlyafterwards.A、neednottohavewritt
(1)BecauseImarriedaphotographer,oncewehadchildren,ourholidaycard
PassageThree[br]WhydidthecoupleneedRobCarrick’shelp?Becausetheyhadd
PassageOne[br]Whydidtheauthorshutdownhercomputerabruptly?Becausethe
Itwillbesafertowalkthestreetsbecausepeoplewillnotneedtocarrylarge
随机试题
[img]ct_epem_epelisv_00981(20097)[/img][br][originaltext]Whattimeisitbyy
Manyarticlesandbookshavebeenwritteninrecentyearsaboutcultureinor
Growingoldisnotexactlypleasantforpeoplein【C1】______Americancultu
December1D
Thechildmaygetconfusedathearingthecolorofwhiteusedforpaperwhenhe/
“可持续发展(SustainableDevelopment)”的观念第一次在国
房地产投资风险管理中最适用的方法是( )。A.风险规避 B.风险组合 C.
某12m跨重级工作制简支焊接实腹工字形吊车梁的截面几何尺寸及截面特性如图1-11
关于失能收入损失保险的说法,正确的有()。A.失能收入损失保险承保被保险人因疾病
符合中枢性瘫痪的临床特征是A.肌群瘫痪为主 B.有肌萎缩 C.肌张力增高
最新回复
(
0
)