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
63
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、released
B、was released
C、has been released
D、had been released
答案
A
解析
使用语法。森林被毁散发出的二氧化碳,以及南亚稻田散发出的甲烷,聚集了足够的热量将自然降温的作用抵消。本句的结构是Carbon dioxide...plus methane...trapped...由森林被毁而散发出的二氧化碳,所以这里需要一个过去分词做定语,选released。
转载请注明原文地址:https://kaotiyun.com/show/G8a4777K
0
考研英语一
相关试题推荐
Airbnb,thepopularplatformthatletspeoplerentouttheirhomesandapartments,releasedtheresultsofavolunteersurveyth
Artificialintelligenceisbecominggoodatmany"human"jobs—【C1】______disease,translatinglanguages,providingcustomerservi
Aftertakingabriefpausetoweathertherecession,aninvasionofBritainbysomeofAmerica’sbest-knownretailbrands—includ
Readthefollowingtextandanswerquestionsbyfindinginformationfromtherightcolumnthatcorrespondstoeachofthemarked
Onthesurface,Marsisthepictureofdesolation.Abarrenlandremains【C1】______forhundredsofmillionsofyears,motionless【
Onthesurface,Marsisthepictureofdesolation.Abarrenlandremains【C1】______forhundredsofmillionsofyears,motionless【
Foralmosttwocenturiesnow,scientistshavenoticedaplace’ssuicideratebearstroublinglinkstothechangingoftheseason
Thedeclineofcivilityandgoodmannersmaybeworryingpeoplemorethancrime,accordingtoGentilityRecalled,editedbyDigb
SupposeProfessorChenisgoingtospendoneyearawayfromhisinstitutiontopursueresearchinatmosphericscience.Writehim
Aprettypotplantmightmakeanunemotionalworkspacefeelmorepersonal.Butnewresearchhasrevealedthatofficeplantsdo
随机试题
国产螺杆式压缩机型式代号为()。
张老师为了提高数学教学质量,采用摸底考试的方式了解学生的学习基础。这种评价于()
加工皮蛋时,应严格控制的元素是()。
釉质和牙骨质在牙颈部相连的关系是
A.卵巢动脉B.子宫动脉C.阴道动脉D.阴部内动脉E.会阴动脉
下列情形可以授予专利权的是()。
根据合同法律制度的规定,下列关于租赁合同解除的表述中,正确的有()。(2017年)
(2011年河北.59)“给力”是中国北方的土话,表示给劲、带劲的意思。闽南话意思为很精彩、很棒的意思。2010年“给力”一词流行起来,20lO年11月10日,《人民日报》头版标题《江苏给力“文化强省”》引发国内舆论热议,许多报刊纷纷效仿运用。下列对“给力
取印模时,肌功能修整方法包括()。
A、Becausesheisafraidoflivingbyherselfandsheisshortofmoney.B、Becausesheisafraidofseeingadoctor.C、Becausesh
最新回复
(
0
)