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
Dinosaurs were reptiles which became extinct about 65 million years ago. The most intriguing question about dinosaurs has always
Dinosaurs were reptiles which became extinct about 65 million years ago. The most intriguing question about dinosaurs has always
admin
2013-01-22
81
问题
Dinosaurs were reptiles which became extinct about 65 million years ago. The most intriguing question about dinosaurs has always been "【21】did they die out?" There is no simple answer to this question,【22】many hundreds of scientists are studying the problem. They are not studying the extinction of the dinosaurs【23】, but the whole question of extinction. Many other plants and animals have【24】in the past, and it is important to understand【25】this happened. Having this information could help save many species that are【26】in the modern world. Humans are causing extinctions now, because of pollution and other damage【27】the environment. Maybe the dinosaurs can tell us how to save the earth today,【28】their extinction 65 million years ago! Some of the early dinosaur scientists, 100 years ago, thought the dinosaurs died out because the【29】changed, and they could not breathe. Others thought that the dinosaurs disappeared simply because they became too big.
They were【30】to move and could not find enough food【31】One theory is that a huge killer meteorite【32】the earth. Some scientists【33】that the extinction of dinosaurs was possibly due to rapid【34】of the planet’s climate. Perhaps huge amounts of lava pours out of volcanoes in India. This sent up vast【35】of dust that blacked out the sun, and made the earth icy cold.
选项
A、when
B、why
C、how
D、/
答案
C
解析
本题涉及到对文章下文的理解。下文提到多个观点说明恐龙灭绝的原因,而第1句就明确了恐龙灭绝的时间,因此本句中应该选择how来表达大家的疑问。
转载请注明原文地址:https://kaotiyun.com/show/9b1O777K
0
考博英语
相关试题推荐
A、showedB、demonstratedC、illustratedD、explainedA本题考核的知识点是动词。看主语,看宾语,看搭配。本题测试点为动词词义辨析。A、B、C项都有“显示”的意思,但是有些区别。B项意为“表明”,C项意为“举例说
A、legallyB、illegallyC、conventionallyD、unconventionallyB本题考核的知识点是:对应成分分析——and对应+宾补(相当于主系表的修饰结构)。根据and可以得到theMoroccanoccupat
Theenergycrisis,whichisbeingfeltaroundtheworld,hasdramatizedhowthecarelessuseoftheearth’sresourceshasbrough
Theyaremeticulousinwork,wellawareacarelessmistakewillcostthecompanymillionsofpounds.
Thefactshaveprovedthattheyallhavethe_______ofsolvingpracticalproblems.
Farmersaremoreanxiousforrainthanpeopleincitiesbecausetheyhavemoreat______.
Theearthiswitnessinganurbanrevolution,aspeopleworldwidecrowdintotownsandcities.In1800onlyfivepercentofthew
SDSmembersbelievedthatseriousproblemsplaguedthecountry,suchaseconomicinequality,thenucleararmsrace,racism,andwide
随机试题
等离子弧切割大厚度割件时的工作气体常用()。
下列因素中引起双侧瞳孔缩小的是【】
女性,24岁,2年来有发作性神志丧失,四肢抽搐,服药不规则。今日凌晨开始又有发作,意识一直不清醒。来院后又有一次四肢抽搐发作。病人目前处于下列哪一种状态
为纪念“抗美援朝”五十五周年,作家于任于2005年2月写成报告文学《伟大的战略出击》一书的初稿,6月修改定稿,8月由出版社正式出版,10月经版权登记。于任取得正式出版的《伟大的战略出击》一书的著作权是自()起。
按照国家有关部门的统一部署,F市税务机关曾在前两年开展过土地增值税征收清算,其中涉及房地产开发企业甲开发的高档住宅小区××花园。该项目分为一期和二期。其中,一期于开展清算的上年3月建成,并于同年年底完成销售;二期当时刚刚完成地基建设。经核实,一期完成房屋建
下列关于估价上的建筑物折旧的说法中,正确的有()。
下列投标文件中,属于废标的有()
根据《房地产估价规范》,建筑物的耐用年限应从()之日起计。
申请人在进行首次注册时,要根据自己从事证券投资咨询业务具体类别选择注册登记为()。I.证券投资师Ⅱ.证券投资顾问Ⅲ.证券分析师Ⅳ.证券分析顾问
受害人必须通过行政先行处理程序要求行政赔偿,才能在赔偿要求不能得到满足时提起诉讼。()
最新回复
(
0
)