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
In July 1994 Jupiter, the largest planet in our solar system, was struck by 21 pieces of a comet (彗星). When the fragments (碎片) l
In July 1994 Jupiter, the largest planet in our solar system, was struck by 21 pieces of a comet (彗星). When the fragments (碎片) l
admin
2011-02-21
59
问题
In July 1994 Jupiter, the largest planet in our solar system, was struck by 21 pieces of a comet (彗星). When the fragments (碎片) landed in the southern part of the giant planet, the explosions were watched by scientists here on earth. But what if our own planet was hit by a comet?
The year is 2094. It has been announced that a comet is heading towards the Earth. Most of it will miss our planet, but two fragments will probably hit the southern part of the Earth. The news has caused panic.
On 17 July, a fragment four kilometers wide enters the Earth’s atmosphere with a huge explosion. About half of the fragment is destroyed. But the major part survives and hits the South Atlantic at 200 times the speed of sound. The sea boils and an enormous wave is created and spreads. The wall of water rushes towards southern Africa at 800 kilometres an hour. Cities on the African coast are totally destroyed and millions of people are drowned. The wave moves into the Indian Ocean and heads towards Asia. Millions of people are already dead in the southern part of the Earth, but the north won’t escape for long. Tons of broken pieces are thrown into the atmosphere by the explosions. As the sun is hidden by clouds of dust, temperatures around the world fall to almost zero. Crops are ruined. Wars break out as countries fight for food. A year later civilization has collapsed. No more than 10 million people have survived.
Could it really happen? In fact, it has already happened more than once in the history of the Earth. The dinosaurs(恐龙) were on the Earth for over 160 million years. Then 65 million years ago they suddenly disappeared. Many scientists believe that the Earth was hit by a space fragment. The dinosaurs couldn’t survive in the cold climate that followed and they became extinct. Will we meet the same end?
Why does the author mention dinosaurs at the end of the passage?
选项
A、Because they could only live in the warm climate.
B、Because they once dominated the earth.
C、Because their extinction indicates future disasters.
D、Because dinosaurs and humans never live in the same age.
答案
C
解析
为了证明这种灾难发生的可能性,作者举例说明。举的例子是恐龙的灭绝。它们曾经在地球上生活了近1亿6千万年,但是在6千5百万年前突然消失,所以证明未来的地球上可能发生灾难。所以正确的答案为C。
转载请注明原文地址:https://kaotiyun.com/show/NM5d777K
本试题收录于:
公共英语二级笔试题库公共英语(PETS)分类
0
公共英语二级笔试
公共英语(PETS)
相关试题推荐
PoliceinNewYorkhavestartedridingbicyclestohelpbeatcrime(犯罪).TheyarethelatestAmericanpoliceto【B1】thatstayin
Childrenarebecomingmoreinactiveinstudybecause______.Themainideaofthepassageisthat______.
Howwonderfullyshesings!Ihaveneverheard_______.
Youwanttoknowwherethesafestplaceforyoungchildrenisinthecar?Expertsallsaythebackseatisthesafestplacefor
WhattheAmericanscientistdidwastotest________.Whichofthefollowingwasnotclearlystated?
WhattheAmericanscientistdidwastotest________."Theoriginalnames"means________.
LifeontheplanetJupiterisapossibilitywhich______.Lifeonotherplanetsispossible______.
Whatisthewomanwaitingfor?
MrSmithwondered______hisdaughterhadeverbeenfondofmusic.
Stageplays,atfirst,seemalotlikefilms.Bothuseactorsanddialogueandscenery.Butifyoutrytomakeafilmbysetting
随机试题
“套期工具”账户的性质属于【】
多房棘球绦虫的终宿主主要是
文教建筑是供人们政治文化活动、行政办公以及其他商业、生活服务等公共事业所需要的建筑物。()
房地产开发投资中的销售税金,又称“两税一费”,包括()。
产业政策的()是政府为实现特定的产业发展目标对经济活动的一种自觉干预。
检务部门签发证单出境应在5个工作日内完成,入境应在10个工作日内完成。检验检疫机构签发的证单以验讫日期为签发日期。( )
简述综合型绩效考评方法。
评价量规:问题:教学中如何使用该评价量规(说出两种方案)?并指出该案例中的评价量规不够完善的地方。
教师应该不断了解学生的过去与现状,预测学生的发展与未来,检验教育教学效果,获取教育教学反馈信息,准备新一轮的教育教学活动。这体现了教师劳动的()特点。
大额可转让定期存单不同于传统定期存单的特点有()。
最新回复
(
0
)