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
Humans have altered the world’s climate by (1)_____ heat-trapping gases since almost the beginning of civilization and even prev
Humans have altered the world’s climate by (1)_____ heat-trapping gases since almost the beginning of civilization and even prev
admin
2009-04-27
104
问题
Humans have altered the world’s climate by (1)_____ heat-trapping gases since almost the beginning of civilization and even prevented the start of an ice age several thousand years ago, a scientist said.
Most scientists (2)_____ a rise (3)_____ global temperatures over the past century (4)_____ to emissions of carbon dioxide (5)_____ human activities like driving cars and operating factories.
Dr. William Ruddiman, a professor at the University of Virginia, said at a meeting of the American Geophysical Union (6)_____ humans’ effect (7)_____ climate went back nearly 10, 000 years (8)_____ people gave up hunting and gathering and began farming.
In a commentary accompanying the article, Dr. Thomas J. Crowley of Duke University, said he (9)_____ Dr. Ruddiman’s premise at first. "But when I started reading, Dr. Crowley wrote, "I could not help but (10)_____ whether he just might be (11)_____ something."
The climate of the last 10,000 years has been unusually stable, (12)_____ civilization to flourish. But that is only because people chopped down swaths of forest in Europe, China and India for croplands and pastures. Carbon dioxide (13)_____ by the destruction of the forests, plus methane, another heat-trapping gas, (14)_____ by irrigated rice fields in Southeast Asia, trapped enough heat to (15)_____ an expected natural cooling.
Levels of carbon dioxide and methane rise and fall in natural cycles (16)_____ thousands of years, and both reached a peak at the end of the last ice age 11;000 years ago. Both then declined (17)_____ expected.
Both (18)_____ declining through the present day, leading to lower temperatures, and a new ice age should have begun 4,000 to 5,000 years ago, Dr. Ruddiman said. Instead, levels of carbon dioxide reversed 8,000 wears ago. The decline (19)_____ methane levels reversed 5,000 years ago, (20)_____ with the advent of irrigation rice farming.
选项
A、to
B、since when
C、as when
D、to when
答案
D
解析
使用语法。people gave up...这是个句子,所以前面应该有关联词引导,根据上下文推断,应该是when。前面有go back,go back to 意思是追溯到…,所以应该选to when。
转载请注明原文地址:https://kaotiyun.com/show/X8a4777K
0
考研英语一
相关试题推荐
Artificialintelligenceisbecominggoodatmany"human"jobs—【C1】______disease,translatinglanguages,providingcustomerservi
GivenalltheroilingdebatesabouthowAmerica’schildrenshouldbetaught,itmaycomeasasurprisetolearnthatstudentssp
Thecorporateworldisincreasinglyrejectingimperialchiefexecutivesinfavourofanonymousmanagers—prudentandboringmena
ChilddevelopmentalpsychologistJeanPiagetconvincedusthatyoung,undevelopedmindscouldn’thandlecomplexconceptsbecause
TheSevenWondersoftheAncientWorldwereacollectionofremarkableconstructionslistedbyvariousGreekauthors,including
TheSevenWondersoftheAncientWorldwereacollectionofremarkableconstructionslistedbyvariousGreekauthors,including
Whyinanageofadvancedtechnology,shouldsomanypeoplestillclingtoanancientbelief?Inpartitmustbebecauseastrolo
ReadthefollowingtextandanswerthequestionsbychoosingthemostsuitablesubtitlefromthelistA-Gforeachnumberedpara
Readthefollowingtextandanswerquestionsbyfindinginformationfromtherightcolumnthatcorrespondstoeachofthemarked
MostforecastssuggestthatBritainwillbeapoorercountryafterBrexit,largelybecausetradingwiththeEuropeanUnionwill
随机试题
NO是一种红棕色、有特殊臭味的气体。()
我国古典美学中谈到的“状难写之景如在目前,含不尽之意见于言外”揭示了审美对象的哪个特点【】
按工作原理分类的泵有()。
根据《合同法》规定,当事人在合同中约定的违约金过分高于因违约行为造成的损失的,违约方()。
资料1资料2资料3请根据以上资料,选择以下栏目的正确选项:“运输工具名称”栏:()。
CallerID
在美国国防部的可信任计算机标准评估准则中,安全等级最低的是()。
【B1】【B2】
A、Tobeakeenphotographeristoocostly.B、Shehastodevelop10rollsoffilms.C、Allherfilmswerevanished.D、Afterthetr
WritingPublicSpeeches1.SpeechesthatinformInformativespeeches:toshow,【T1】andinform【T1】______Possiblemethodsoforgan
最新回复
(
0
)