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
A Star Is Born 1 The VLT (Very Large Telescope) is the world’s largest teles...
A Star Is Born 1 The VLT (Very Large Telescope) is the world’s largest teles...
admin
2020-12-24
12
问题
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 that 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.
Eta Carinae is taken________.
选项
A its detecting power
B millions of light years away in space
C the location of the VLT
D as an example
E the birth of the earth
F the rotation of the earth
答案
D
解析
文章第三段谈到Eta Carinae的时候是把它作为一个例子来讲的,故答案为D。
转载请注明原文地址:https://ti.zuoweng.com/ti/gE9QKKKQ
相关试题推荐
TheFrenchdomesticmarketisthelargestconsumerofchampagne.A:strain B:purc
共用题干 第三篇LiverDiseaseTheliveristhesecondlargestorganinyourbody.The...
AStarIsBorn 1TheVLT(VeryLargeTelescope)istheworld’slargestteles...
AStarIsBorn 1TheVLT(VeryLargeTelescope)istheworld’slargestteles...
AStarIsBorn 1TheVLT(VeryLargeTelescope)istheworld’slargestteles...
SmallButWise OnDecember14,NASAblastedasmallbutmightytelescopein...
SmallButWise OnDecember14,NASAblastedasmallbutmightytelescopein...
SmallButWise OnDecember14,NASAblastedasmallbutmightytelescopein...
SmallButWise OnDecember14,NASAblastedasmallbutmightytelescopein...
SmallButWise OnDecember14,NASAblastedasmallbutmightytelescopein...
随机试题
下列可由期货公司住所地的中国证监会派出机构依法核准任职资格的人员有()。 A.
全面依法治国是一个系统工程,是国家治理领域一场广泛而深刻的革命。关于全面依法治国
治疗妊娠高血压综合征时,应用硫酸镁的注意事项错误的是
A.皮肤表层及浅真皮层损伤 B.创口边缘整齐 C.创缘不整齐,裂口广,可伴有骨折 D.入口小而深,常为盲管伤 E.皮下组织被损伤,但无开放性创口挫裂伤表
咨询师对咨询目标的错误理解不包括()A.认为咨询师应持完全中立的态度,不应带有任何自己的价值观念B.认为咨询中应该给求助者灌输、传授一些正确的、健康的价值观
患者恶寒发热,无汗,鼻流清涕,咳嗽痰多,气短懒言,倦怠乏力,苔白脉弱。治疗应首选的方剂是A:小青龙汤B:败毒散C:九味羌活汤D:参苏饮E:麻黄附子细辛汤
满足施工可操作性要求是混凝土配制的基本要求之一,其含义包括()。A.流动性B.耐久性C.可塑性D.易于密实性E.经济性
《施工现场临时用电安全技术规范》规定,电缆直接埋地敷设的深度不应小于0.7m,并应在电缆紧邻上、下、左、右侧均匀敷设不小于( )mm厚的细砂,然后覆盖砖...
估价目的不同,()。A.估价结果应相同B.采用的估价方法可能不同C.估价结果可能不同D.估价方法应相同E.采用的依据可能不同
因被保险人张某抗拒依法采取的刑事强制措施致其自身伤残的,保险人应承担给付保险金的责任。()