首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
共用题干 A Star Is Born1 The VLT (Very Large Telescope) is the world's largest ...
共用题干 A Star Is Born1 The VLT (Very Large Telescope) is the world's largest ...
admin
2020-12-24
51
问题
共用题干
A Star Is Born
1 The VLT (Very Large Telescope) is the world's largest telescope(望远镜)and is
taking astronomers(天文学家) further back to the Big Bang than they ever thought
possible.Located 2,600 metres up in the Chilean Andes,it has four huge mirrors,each about the size of a London bus.The VLT is so powerful it can spot a burning match 10,000
kilometres away.
2 This astonishing power will allow astronomers to see events in space from the birth of
stars to the collision(碰撞)of galaxies(星系)on the edge of the cosmos(宇宙).The
VLT is giving astronomers their best-ever view of the cosmos.The power of the VLT to see
the smallest detail at the furthest distances makes its designers amazed.
3 Take the case of Eta Carinae,one of the most explosive stars in the universe.This star
produces ultraviolet laser rays(紫外线)and it will destroy itself in a few million years' time.
It is five times brighter than the sun and when it explodes it is going to be a sight worth
waiting for!
4 But it is at distances of millions,even billions,of light years that the VLT really shows
its power. The VLT can detect light that set out on its journey before the earth even existed.
This gives astronomers their first-ever detailed views of events that took place in the earliest
days of the cosmos.
5 In other words,the VLT is a kind of a time machine.It takes astronomers back to a
time when complete galaxies crashed into each other. The effects of these past collisions
can now be seen by scientists,and astronomers believe the telescope will reveal more
about these exciting' events in the years to come.One day,we might be able to say we
have traveled back to the beginning of time,and we will have a much clearer picture of how
our planet was born.
选项
Paragraph 4_________
A:Events that took place before the earth existed
B:Power of the telescope
C:Details of Eta Carinae
D:Invention of a time machine
E:Biggest telescope
F: Birth of the new worlds
答案
A
解析
转载请注明原文地址:https://ti.zuoweng.com/ti/YqsQKKKQ
相关试题推荐
共用题干 ANewCitizenshipTest1Lastweek,asampleofthenewUScitizenship(公...
共用题干 GoingBacktoItsBirthplaceNosportingeventtakesholdoftheworld'...
共用题干 GoingBacktoItsBirthplaceNosportingeventtakesholdoftheworld'...
共用题干 GoingBacktoItsBirthplaceNosportingeventtakesholdoftheworld'...
共用题干 WinnersandLosersWhyarethebiggestwinnersinthepastdecadeoftra...
共用题干 WinnersandLosersWhyarethebiggestwinnersinthepastdecadeoftra...
共用题干 WinnersandLosersWhyarethebiggestwinnersinthepastdecadeoftra...
共用题干 WinnersandLosersWhyarethebiggestwinnersinthepastdecadeoftra...
共用题干 CreatingaWorldwithoutSmokingSmokingwillbebannedinallpubs,club...
共用题干 CreatingaWorldwithoutSmokingSmokingwillbebannedinallpubs,club...
随机试题
金融机构在办理证券业务过程中,不得有下列行为()。 A.通过恶意压低承销费用竞
发生慢性红斑型念珠菌口炎的主要因素是() A.新生儿受念珠菌感染 B.长期应
关于烧伤创面的愈合,下列描述错误的是 A、Ⅰ度烧伤3~5天痊愈 B、浅Ⅱ度烧
货币政策一般是由()来制定和执行的。
2008-87.属于“善色”的面色是 A.色如以缟裹绀B.色如蟹腹C.色如
杏苏散属A.汗法B.补法C.清法D.下法E.温法
住房和城乡建设部印发的《危险性较大的分部分项工程安全管理办法》中,对超过一定规模的危险性较大的分部分项工程规定须组织专家论证。下列分部分项工程安全专项施工...
工程项目变更令附件一般包括( )A.业主名称、业主授权代表签字B.设计图纸C.变更工作的设计资料D.承包商名称、承包商授权代表签字E.变更工作的工程量
《公民道德建设实施纲要》提出的从业人员应遵循的职业行为准则包括()。 (A)以人为本(B)热爱科学(C)服务群众(D)奉献社会
以投保人是否就同一保险标的、同一保险利益、同一保险事故分别与两个以上保险人订立保险合同为标准,可以分为()。 A.单一保险合同和多重保险合同B.单...