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
21
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、life
B、gas
C、air
D、surroundings
答案
B
解析
根据下文提到恐龙无法呼吸,可以判断出科学家认为地球上的空气发生了变化,因此答案是air。
转载请注明原文地址:https://kaotiyun.com/show/sb1O777K
0
考博英语
相关试题推荐
Icanrespectsomeonewhois______fortheiractions,butIcannotrespectsomeonewhoisalwayspointingthefinger.
Iamoneofthemanycitypeoplewhoarealwayssayingthatgiventhechoicewewouldprefertoliveinthecountryawayfromth
Iamoneofthemanycitypeoplewhoarealwayssayingthatgiventhechoicewewouldprefertoliveinthecountryawayfromth
Hersadnesswasobvious,butshebelievedthatherfeelingofdepressionwas______.
Millionsoftonsofwaterare______byacomplexsystemofdykes.
Hurricanesareviolentstormsthatcausemillionsofdollarsinpropertydamageandtakemanylives.Theycanbeextremelydange
Theenergycrisis,whichisbeingfeltaroundtheworld,hasdramatizedhowthecarelessuseoftheearth’sresourceshasbrough
A、anyB、oneC、anotherD、noC通过分析本句话可知,在本句话中以but作为转折,说明两者不同,在四个选项中another可以表达此义,隐含着“(one)…another”的上下承接关系。其他选项都不具备这种功能。因此本题答案为C。
在美国人经常光顾的那些欧洲国家,友谊跟其他更随意的人际关系有很大的区别,友谊与家庭生活的关联方式也各不相同。
SDSmembersbelievedthatseriousproblemsplaguedthecountry,suchaseconomicinequality,thenucleararmsrace,racism,andwide
随机试题
湖南省的衡阳、江苏省的江阴分别位于()。
我国公司债券采用_______方式发行。
治疗痰气郁结型之癫证的最佳选方是
患者,女性,50岁。十二指肠溃疡病史10余年。近日患者自觉疼痛加剧,l小时前突感上腹刀割样疼痛,很快蔓延到全腹疼痛。急诊入院:查体全腹有明显的压痛、反跳痛,肌紧张板样强直,初诊为十二指肠穿孔。确诊肠穿孔的重要依据是
属于乙类传染,但按甲类管理的疾病是
《建设项目环境保护分类管理名录》中未作规定的建设项目,其环境影响评价类别由()根据建设项目的污染因子、生态影响因子特征及其所处环境的敏感性质和敏感程度提出建议,报国务院环境保护行政主管部门认定。
文件的属性被设置成“只读”后,下列说法正确的是()。
______是展示每一个学生在学习过程中所做的努力、所取得的进步和反映其学习成果的一个集合体。
在磁盘的某一工作时刻中( )。
Someoftheoldworriesaboutartificialintelligencewerecloselylinkedtothequestionofwhethercomputerscouldthink.The
最新回复
(
0
)