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
When we see a bright light moving quickly across the night sky, we often talk about seeing a "shooting star" or a "falling star"
When we see a bright light moving quickly across the night sky, we often talk about seeing a "shooting star" or a "falling star"
admin
2021-03-31
74
问题
When we see a bright light moving quickly across the night sky, we often talk about seeing a "shooting star" or a "falling star".These moving lights are not in【C1】_________stars at all.They are small pieces of matter from outer space that burn up as they enter the Earth’s atmosphere.The correct name for these 【C2】ob_________is meteoroids.Any pieces that make it to the Earth’s surface without 【C3】_________(complete) burning up are known as meteorites.Meteor is actually the name given to the light we see when a meteoroid is burning up.
If a large enough meteorite hit the Earth, it could knock the planet out of its orbit, which would have catastrophic results.The path we follow around the sun would change and the Earth would become【C4】_________much hotter or much colder as a result.This change in【C5】tern_________would affect sea levels and the amount of water in rivers.There would either be huge floods or the oceans would dry up causing a【C6】_________(dry).All life on the Earth would probably become extinct.Although it is unlikely that the Earth will be struck by a meteorite large enough to do this kind of damage, there is【C7】evi_________of quite a large meteorite hitting the Earth in the past.In 1908, a large area of forest in Tunguska, Siberia, was destroyed by a meteorite that came apart just before it hit the ground.The moon, however, has about three billion craters, caused by meteorites crashing【C8】 _________its surface.It has so many craters because it does not have enough atmosphere in which the meteoroids can burn up.
Some of the meteorites that have reached the Earth’s surface have done considerable damage.Some scientists believe that it was a change of climate, caused by meteorites hitting the Earth, that resulted in the【C9】_________(extinct) of the dinosaurs and other large prehistoric animals.Scientists are especially interested in meteorites because they contain information about the solar system.It is【C10】 wi _________believed that most meteorites were produced billions of years ago by collisions between asteroids (small planets).This means that the physical and chemical structure of a meteorite can give scientists information about the early universe.
【C4】
选项
答案
either
解析
转载请注明原文地址:https://kaotiyun.com/show/BLAK777K
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
TheLondontoBrightonCarRunThefirstLondontoBrightonruntookplaceonNovember14th,1896.Itwas【21】org______tocel
Manyofthethingswedodepend【16】______receivinginformationfromotherpeople.【17】Ca______atrain,makingaphonecallandgo
"Home,sweethome"isaphrasethatexpressesanessentialattitudeintheUnitedStates.Whethertherealityoflifeinthefam
"Home,sweethome"isaphrasethatexpressesanessentialattitudeintheUnitedStates.Whethertherealityoflifeinthefam
Therecessionhasbroughtaboutanabruptchangeofmoodonuniversitycampusesupanddownthecountry.Afive-yearboominthe
Summary:DifferentpeoplehavedifferentopinionsaboutLondon’s【51】______theOlympicGamesin2012.EonthinkstheGamesw
A、Adoctor.B、Abiologyteacher.C、Anaccountant.D、Adancer.A女士说,她做了3年医生,但是不喜欢医生这个职业,所以决定教生物学。故选A。
—Hurryup.I’mafraidwe’relate.—___________Thetrainleavesat10:30.Westillhavehalfanhourtogo.
A、Theyareverygoodfriends.B、Theyhaven’tseeneachotherforalongtime.C、Theyarefondofanimals.B
IntheUnitedStatesalsothereweregreatchanges,thoughthecauseshereweredueonlyinparttothewar;theysprangmainly
随机试题
下面程序的运行结果是()main(){inty=5,x=14;y=((x=3*y,x+6),x-1);printf("x=%d,y=%d",x,y);}
巴纳德指出,下属对组织命令的反应可能有三种形式,这不包括()
不属于初级结合型胆汁酸的是
A.中极B.关元C.气海D.天枢常用以诊断小肠病的腧穴是
A.结节性甲状腺肿B.甲亢C.慢性淋巴细胞性甲状腺炎D.甲状腺腺瘤E.甲状腺癌与生理因素及缺碘有关
男,40岁。干农活时刺伤右足10天,伤后未就医,张口困难2天,颈项紧,频繁抽搐,呼吸道分泌物较多,有窒息的危险,为保持呼吸道的通畅。最有效的措施是
据中国B2B研究中心相关调查数据显示,截止到2009年6月,我国规模以上电子商务网站总量已经达12282家。其中,B2B电子商务服务企业有5320家,B2C、C2C与其他非主流模式企业达6962家,特别是自进入2008年来,呈现出高速增长、乃至井喷之势。
一项工程交由甲、乙两个工程队负责,甲队单独干了4天后,乙队加入和甲队一起干,又过了5天完成了全部工程的。两个队又干了9天正好完成了全部工程的。此时甲队另有任务撤走,乙队独自完成了剩下的工程。这项工程从开始到完工总共用了()天。
抗日根据地的教育方针政策包括______、______、______。
设随机变量X在区间(0,1)上服从均匀分布,当X取到x(0<x<1)时,随机变量Y等可能地在(x,1)上取值。试求:P{X+Y>1}。
最新回复
(
0
)