首页
登录
职称英语
All the useful energy at the surface of the earth comes from the activity of
All the useful energy at the surface of the earth comes from the activity of
游客
2025-03-10
19
管理
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. (80) 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. [br] 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 very small 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:http://tihaiku.com/zcyy/3990442.html
相关试题推荐
John______fromsocialactivitybecausehefeltembarrassedwithpeople.A、held
Asweknow,physics______thescienceofenergy.A、wasB、wereC、isD、areC本题考查的是
Alltheusefulenergyatthesurfaceoftheearthcomesfromtheactivityof
______mostoftheearth’ssurfaceiscoveredbywater,freshwaterisveryrare
太阳发出光和热,这是地球上人们的主要能源。Thesungivesoutlightandheat,whichisthemajorenergy
Whenhelearnedoftheusefulnessofforeignlanguages,he______studyingEnglish
Treesareusefultomaninthreeimportantways:theyprovidehimwithwood
Treesareusefultomaninthreeimportantways:theyprovidehimwithwood
Student:______afewquestionsonthesubjectofsolarenergy.Teacher:Ok,goah
Withoutthesun’slight______theearth’ssurface,nolifecouldexistontheear
随机试题
Howmenfirstlearnttoinventwordsisunknown;inotherwords,theorigin
Inatelephonesurveyofmorethan2000adults,21%saidtheybelievedthe
Whileanti-slaverysentimenteventuallydictatedpolicyinboththeUnitedS
沉砂池排出的砂,在运输前需进一步降低含水率,并分离有机物,可采用下述哪几种设备?
绒癌临床治愈标准是A.化疗后症状、体征消失,血β-HCG每周测定已3次正常,巩固
患者男性,60岁。急性前壁心肌梗死2天,晕厥2次,心室率40次/分,律齐,心电图
滋阴固气汤治疗崩漏的适应证候是()A.肾阴虚证 B.肾气虚证 C.肾阳
关于蛋白质分子组成的叙述,正确的是( )。A.组成蛋白质的主要元素有氮、硫和氧
A.溶出度检查B.澄明度检查C.粒度检查D.微生物限度检查E.抗氧剂的干扰注射剂
最新回复
(
0
)