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
49
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://jikaoti.com/ti/BULMFFFM
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
Alltheequipmentinthelab________madeinChina.
Smokingissoharmfultopersonalhealththatitkills________peopleeachyearthanautomobileaccidents.
CelebrityWorshipersPsychologistshavefoundthatpeoplewhobelieveinajustworldaremorelikelytoworshipcelebrities
GesturesIntroduction.definition—motionsofthe【T1】________.function—toexpressorhelpexpressthoughtso
MakeYourHolidaysMoreMeaningfulⅠ.Whattodobeforetheholidayseason1)【T1】________aweeklycalendar2)start
AllthefollowingsentenceshaveanappositiveEXCEPT________.
Someresearchersfeelthatcertainpeoplehavenervoussystemsparticularly________tohot,drywinds.
PassageSixWhatdothecompanies’effortstokeeppersonalinformationprivateseemtobe?
【B1】______Manyofthesecustomsincludestoriesandbeliefsrelatedtocreatures,realormagical,takingtheteeth.InAsia,fo
随机试题
最早提出管理的五大职能和有效管理的十四项原则的是()
等离子弧焊的电极材料一般采用铈钨极或钍钨极。
呆小症的病因是由于地方性甲状腺肿的病因是由于
“水脏"是指
胸部照片中,肺纹理的影像,形成的主要组织是
财务管理的主要内容是:()。
下列关于在建筑中布置柴油发电机房描述,不正确的是:(2011年第28题)
我国《合同法》规定可以解除合同的条件有()。
与传统人力资源管理相比,战略人力资源管理强调()。
某二叉树有5个度为2的结点及3个度为1的结点,则该二叉树中共有______个结点。
最新回复
(
0
)