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
Now that man has actually landed on the surface of the moon, he has learned many new things about it. But one thing man knew bef
Now that man has actually landed on the surface of the moon, he has learned many new things about it. But one thing man knew bef
admin
2009-10-15
57
问题
Now that man has actually landed on the surface of the moon, he has learned many new things about it. But one thing man knew before he ever reached the moon was that there was no life on it.
There is no atmosphere on the moon. The lack of air means that the moon is not protected from any of the sun’s rays. The sun sends out heat and light radiation (辐射). Life on the earth depends on heat and light. But the sun also sends out dangerous kinds of radiation. The earth’s atmosphere protects us from most of them. On the moon, however, there is no atmosphere to stop the radiation. All the sun’s rays beat down on the surface of the moon.
Because there is no atmosphere, the moon’s surface is either extremely hot or extremely cold. As the moon circles around the earth, the side of it that is lighted up by the sun becomes very hot. The temperature there reaches more than 300 degrees Fahrenheit (华氏温度). This is hotter than boiling water. The hot lunar day lasts two weeks. It is followed by a night that is also two weeks long. At night the temperature drops to about 260 degrees below zero Fahrenheit. "This is more than twice as cold as temperatures reached at the earth’s South Pole. Under these conditions, no form of life that we know of here on the earth could exist on the moon.
选项
A、Why is there no air on the moon?
B、Why is the moon colder than the South Pole?
C、Why is the moon hotter than the earth?
D、Why is there no life on the moon?
答案
D
解析
题干意为“下列哪一项是本篇文章最好的题目?”本文介绍了月球上各种极端的环境,解释月球不适合人类居住的原因,所以本题的正确答案为D。
转载请注明原文地址:https://kaotiyun.com/show/NSfd777K
本试题收录于:
公共英语二级笔试题库公共英语(PETS)分类
0
公共英语二级笔试
公共英语(PETS)
相关试题推荐
【B1】【B15】
Thesecretarytoldmethattheyhadrun______typingpaper.
WhydidElizabethsaytoherfather"But,Dad,youcan’tbehealthyifyouaredead."?Thereason"Fatherwasinahurrytoge
Whichofthefollowinggivesageneralideaofhowthenoisekillingsystemworks?Besidesitsmainusethenoisekillingsyste
OldFernneverwantedtoknowabouthisson’sstudiesbecause______.Whichofthefollowingistrue?
Wouldn’titbe______wonderfulworldifallnationslivedin______peacewithoneanother?
Thewriterwantstochangeherjobbecause________.Bysendingthisletter,thewriterexpectedto________.
WhichofthefollowingisDavidTebburt’sideaontherelationshipbetweenpeopleandcomputers?DavidTebburtstartedComputer
Shanghai:Carrentals(出租)arebecomingmoreandmorepopularasinexpensivewayoftakingtotheroads.Businesspeople,foreig
Withoutspeakingaword,wecanmakeourselves______,byusingourfaceandourbody,ofcourse.
随机试题
有关社会保险制度的表述不正确的是()
在检查伤员的注意事项中,下列哪项是错误的
关于犯罪目的和犯罪动机的下列表述中,正确的是()。
某企业2011年可比产品按上年实际平均单位成本计算的本年累计总成本为1600万元,按本年计划单位成本计算的本年累计总成本为1500万元,本年累计实际总成本为1450万元。则可比产品成本的降低率为()。
以下不符合《税收征收管理法》规定的有()。
影响老年性生活的心理因素包括无知及认知谬误、兴趣下降、性态度老化、对衰老的恐惧和()问题。
不属于元认知策略的是()。
行政机关的基本职能是:
已知A=,则A-1=_____.
A、Theyareweatherresearchers.B、Theystudyhumanhealthinresponsetoatmosphericconditions.C、Theystudypeople’semotional
最新回复
(
0
)