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
There was one thought that air pollution affected only the area immediately around large cities with factories and heavy automob
There was one thought that air pollution affected only the area immediately around large cities with factories and heavy automob
admin
2011-01-21
63
问题
There was one thought that air pollution affected only the area immediately around large cities with factories and heavy automobile traffic. At present, we realize that although these are the areas with the worst air pollution, the problem is literally worldwide. On several occasions over the past decade, a heavy cloud of air pollution has covered the east of the United States and brought health warnings in rural areas’ away from any major concentration of manufacturing and automobile traffic. In fact, the very climate of the entire earth may be infected by air pollution. Some scientists consider that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels (coal and oil)is creating a "greenhouse effect" -- conserving heat reflected from the earth and raising the world’s average temperature. If this view is correct and the world’s temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be in water.
Another view, less widely held, is that increasing particular matter in the atmosphere is blocking sunlight and lowering the earth’s temperature -- a result that would be equally disastrous. A drop of just a few degrees could create something close to a new ice age, and would make agriculture difficult or impossible in many of our top farming areas. Today we do not know for sure that either of these conditions will happen (though one recent government report drafted by experts in the field concluded that the greenhouse effect is very possible). Perhaps, if we are lucky enough, the two tendencies will offset each other and the world’s temperature will stay about the same as it is now.
As to the greenhouse effect, the author ________.
选项
A、shares the same view with the scientists
B、is uncertain of its occurrence
C、rejects it as being ungrounded
D、thinks that it will destroy the world soon
答案
B
解析
第一段最后一句“If this view is correct...”表明作者只是引用这种现象并不确定其正确性。
转载请注明原文地址:https://kaotiyun.com/show/qI3d777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Onthenightoftheplay,Albertwasatthehallearlyandhewasalreadymade-uplongbeforetheendofthefirstact.Hecerta
Onthenightoftheplay,Albertwasatthehallearlyandhewasalreadymade-uplongbeforetheendofthefirstact.Hecerta
ManyUnitedStatescompanieshave,unfortunately,madethesearchforlegalprotectionfromimportcompetitionintoamajorline
Whichwordbestdescribesthelawyer’spredictionofthechangeindivorcerate?
Takinganapisfrowneduponbymanypeopleandisviewedasfondnessfortheelderlyandchildren.Mentionnapandyoucouldbe
Takinganapisfrowneduponbymanypeopleandisviewedasfondnessfortheelderlyandchildren.Mentionnapandyoucouldbe
AmericanandJapaneseresearchersaredevelopingasmartcarthatwillhelpdriversa-voidaccidentsbypredictingwhentheyare
Thatlowmoaningsoundinthebackgroundjustmightbethefoundingfathersprotestingfrombeyondthegrave.Theyhavebeendoi
Educationisprimarilytheresponsibilityofthestates.Stateconstitutionssetupcertainstandardsandrulesfortheestablis
Howoldisthemanmurdered?
随机试题
患儿,女,8岁,体重30kg,以“双下肢皮疹3天”之主诉入院,临床诊断“过敏性紫癜”。入院查体:双下肢可见散在皮疹,主要分布于双侧脚踝、足背、小腿及膝盖部位皮肤,皮疹大小不一,高出皮面,伴有疼痛。人白介素-8187.0pg/ml,嗜酸性粒细胞百分比7.6
下列选项中,不属于营利性医疗机构的是
酚妥拉明使血管扩张的原因是
属于市场监督管理部门职责的有
王某因不服区公安分局行政拘留10天的处罚申请复议,市公安局认为处罚过轻,遂改为行政拘留15天的处罚,王某以市公安局为被告提起行政诉讼。对王某的诉讼请求,法院应当如何处理?
在设备定位放线中,使用的钢卷尺全长大于()m时,必须进行校准。
假定一项安排涉及三方:A公司在该安排中拥有50%的表决权股份,B公司和C公司各拥有25%的表决权股份。A公司、B公司、C公司之间的相关约定规定,该安排相关活动决策至少需要75%的表决权通过方可作出。下列有关该安排的说法中,正确的有()。
曾国藩在《讨粤匪檄》中说:“本部堂奉天子命,统师二万,水陆并进,誓将卧薪尝胆,殄此凶逆。”他所说的“师”指()。
Everycountryhasitsownculture.Eventhougheachcountryusesdoors.Doorsmayhave【C1】______functionsandpurposeswhich
VideogameshavebecomeincreasinglypopularinbotharcadesandtheaverageAmericanhome.Peopleofallagesandfromallwalk
最新回复
(
0
)