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
考研
Dinosaurs were reptiles which became extinct about 65 million years ago. The most【C1】______question about dinosaurs has always b
Dinosaurs were reptiles which became extinct about 65 million years ago. The most【C1】______question about dinosaurs has always b
admin
2010-12-05
101
问题
Dinosaurs were reptiles which became extinct about 65 million years ago. The most【C1】______question about dinosaurs has always been【C2】______did they die out?" There is no simple answer to this question, 【C3】______many hundreds of scientists are studying the problem. They are not studying the extinction of the dinosaurs【C4】______, but the whole question of【C5】______Many other plants and animals have【C6】______in the past, and it is important to understand【C7】______this happened. Having this information could help save many species that are【C8】______in the modern world. Humans are causing extinctions now, because of pollution and other damages【C9】______the environment. Maybe the dinosaurs can tell us how to save the earth today, 【C10】______their extinction 65 million years ago?
Some of the early【C11】______scientists, 100 years ago, thought the dinosaurs died out because the【C12】______changed, and they could not breathe. Other thought that the dinosaurs disappeared simply because they became too big. They were【C13】______to move without falling over, and could not find enough food【C14】______One theory is that a huge killer meteorite【C15】______the earth. Some scientists【C16】______that the extinction of dinosaurs was possibly due to rapid【C17】______of the planet’ s climate. Perhaps huge amount of lava pours out of【C18】______in India. This sent up vast【C19】______of dust that blacked out the sun, and made the earth【C20】______cold.
【C19】
选项
A、clouds
B、spread
C、amounts
D、crowds
答案
C
解析
vast amounts of大量的。
转载请注明原文地址:https://kaotiyun.com/show/5SZ4777K
0
考研英语一
相关试题推荐
Informationchannelingisundergoingremarkableprogressinvarioussectorsofsocietyinindustrialactivities,publicservices
Informationchannelingisundergoingremarkableprogressinvarioussectorsofsocietyinindustrialactivities,publicservices
Exercise,everyoneadvises!Butimmediately,whenyoutry,yourunintotrouble.(46)Thereissomuchcontradictory,sometimesi
YouwillinviteProfessorGreentobetheguestspeakerattheNASHE2007annualconference(Beijing,China,2007.12.15—12.18).
BeforeDr.LutherL.Terry,thentheSurgeonGeneraloftheUnitedStates,issuedhisoffice’sfirst"ReportonSmokingandHeal
Thepersonwhocanseeashipwithoutsomefeelingofexcitementmusthaveverylittleimagination.Eventheideaofleavingthe
WhenIwasapsychiatricresident,wehadafacultymemberwhowasfamousforhismessyoffice:stacksofpapersandoldjournal
TheconveniencesthatAmericansdesireAreflectingnotsomuchaBleisurelylifestyleasabusylifestyleinwhichevenminutes
Anthropologyisthestudyofhumanbeingsascreaturesofsociety.Itfastensitsattentionuponthosephysicalcharacteristics
MarkTwainonceobservedthatgivingupsmokingiseasy.Heknew,becausehe’ddoneithundredsoftimeshimself.Givingupfor
随机试题
血窦的结构特点()
三菱FX系列可编程序控制器中32位的数值传送用()指令。
下列符合《拣麦穗》一文艺术特色的是()
睾丸中的精子已具有使卵子受精的能力。
下列哪项为癫证的特点
关于新生儿胆红素生成较多的原因,以下哪项不正确
(2010年)中国人王某定居美国多年,后自愿加入美国国籍,但没有办理退出中国国籍的手续。根据我国相关法律规定,下列哪些选项是正确的?()
定性风险分析的依据包括()。
在360度考评中,主观性最强的维度是()。
设f(x)具有二阶导数,且f"(x)>0.又设u(t)在区间[0,a](或[a,0])上连续,试证明:
最新回复
(
0
)