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
All the useful energy at the surface of the earth comes from the activity of the sun. The sun heats and feeds creatures and mank
All the useful energy at the surface of the earth comes from the activity of the sun. The sun heats and feeds creatures and mank
admin
2018-09-25
26
问题
All the useful energy at the surface of the earth comes from the activity of the sun. The sun heats and feeds creatures and mankind. Each year it provides men with two hundred million tons of grain and nearly ten million tons of wood, coal, oil, natural gas, and all other fuels are stored energy from the sun. Some was collected by this season’s plants as carbon compounds. Some was stored by plants and trees ages ago. Even waterpower derives from the sun. Water turned into vapor by the sun fails as rain. It courses down the mountains and is converted to electric power. Light transmits only the energy that comes from the sun’s outer layer, and much of this energy that is directed towards the earth never arrives. About nine tenths of it is absorbed by the atmosphere of the earth. In fact, the earth itself gets only one half millionth of the sun’s entire output of radiant energy.
Of the sun’s total output of radiant energy, the earth receives( ).
选项
A、one tenth
B、one millionth
C、all that comes from the surface of the sun
D、a verysmall portion
答案
D
解析
事实细节题。文中最后一句说,事实上,地球只接收了太阳所有辐射能量的百万分之零点五,所以是相当小的一个比例。
转载请注明原文地址:https://kaotiyun.com/show/SR3O777K
0
成人本科学位英语
相关试题推荐
Manyyearsago,whenIwasfreshoutofschoolandworkinginDenver,Iwasdrivingtomyparents’homeinMissouriforChristma
Treesareusefultomaninthreeimportantways:theyprovidehimwithwoodandotherproducts;theygivehimshade;andtheyhe
Withoutthesun’slight______theearth’ssurface,nolifecouldexistontheearth.
Jenny:Hey,Rosy!IheardthatyouaregoingtoTheMalltoday.Rosy:【D1】______Jenny:Yes.PleasebuymethebagthatIshowed
Tom:Hey,Ithinkit’sstartingtorain!George:Yeah,it’sraining.GoodthingIbroughtalongmyumbrella.【D5】______Don’tyou
Mymotherwasavocalsupporterofphysicalpunishment,butforallhertalkingshehasneverhitmysister,andmeonlyonce.I
Wewerenotsurprisedat(),forhehadworkedsohard.
Nowadays,airtravelisvery【C1】______.WearenotsurprisedwhenwewatchonTVthatapoliticianhastalkedwithFrenchPresid
HarrietBeecherStowehadpouredherheartintoheranti-slaverybook,"UncleTom’sCabin".Butneithershenorherfirstpubli
Frank:I’mgladthatourcompanyisstartingtobemoreeco-friendly.David:【D1】______Frank:Wehavestartedtorecycleplasti
随机试题
下列对于危险的说法,有误的一项是()。
属于肾上腺素受体激动剂的是()。
患儿5个月,因发热、咳嗽2天,喘憋1天入院。体检:T39.5℃,P150次/分,R50次/分,烦躁不安,面色灰白,两肺有细湿哕音。诊断:支气管肺炎。患儿入院时,护士对家长进行健康指导最重要的是
运往境外修理的机械器具、运输工具或其他货物,出境时已向海关报明,并在海关规定期限内复运进境的,海关估定完税价格的构成包括( )。
()对基层人民法院已经生效的行政判决、裁定,发现适用法律、法规确有错误的,可以向同级人民法院提出检察建议,并报上级人民检察院备案。
根据下面材料回答下列问题。下面的三角形表示某省五种产业的数量按地域划分(城区、郊区、乡村)所占百分比。图上的字符表示各种工业,三角形的顶点表示100%,与该顶点相对的基线表示0%。例如,该省所有的加工企业中,约有70%地处城市,5%位于乡村,25%在郊区
A.byB.sayC.toPhrases:A.but【T1】___________doingsmallthingsinagreatwayB.Itisdue【T2】___________
在结构化分析使用的数据流图(DFD)中,利用()对其中的图形元素进行确切解释。
Ifthere’sasensitiveinvestigationintotheflawsofcrimefighters,themanthefedsoftencallintodothejobisWilliamH
Somesayitisevidentthatcomputerscandamageaperson’seyesight.Sincethepopularityofcomputersbegantoskyrocket,ther
最新回复
(
0
)