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
2021-12-26
65
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.
Driven by economic profit, people neglect the damage on our environment caused by the "advanced civilization". Maybe the air pollution is the price the human beings have to pay for their development. But is it really worthwhile?
It can be concluded that________.
选项
A、raising the world’s temperature only a few degrees would not do much harm to life on earth
B、lowering the world’s temperature merely a few degrees would lead many major farming areas to disaster
C、almost no temperature variations have occurred over the past decade
D、the world’s temperature will remain constant in the years to come
答案
B
解析
细节题。根据第二段第二句话“of just a few degrees could create something close to a new ice age…”可知,气温哪怕只是降低几度也会造成一个类似的新的冰河时代,这会使农业生产面临困境,甚至许多高原农业地区无法再进行生产,B选项“世界温度仅仅降低几度就会使许多重要的农业区陷入灾难”符合文意,故选B。
转载请注明原文地址:https://kaotiyun.com/show/1QNd777K
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
Largeanimalslivinginthedeserthavedevelopedanumberofadaptationsforreducingtheeffectsofextremeheat.Oneadaptati
TheresearchcarriedoutbytheUniversityofBariinItalycouldhelpprovehospitalswhoareaccusedofwastingmoneyonarta
TheresearchcarriedoutbytheUniversityofBariinItalycouldhelpprovehospitalswhoareaccusedofwastingmoneyonarta
AspeciallabattheUniversityofChicagoisbusyonly【C1】______Itisadream【C2】______whereresearchersareatwork【C3】______d
Readfivestudents’talksabouttravelingaroundEuropeusinganInter-Railticket.Theticketallowspeopleundertheageoft
CarsaccountforhalftheoilconsumedintheUS,abouthalftheurbanpollutionandone-fourththegreenhousegases.Theytake
Ifyouareworriedaboutthingsandareunderalotofstressatworkorschool,thenyouareprobablynotsleepingwell.Worry
"Family"isofcourseanelasticword.Andindifferentcountriesithasdifferentmeanings.ButwhenBritishpeoplesaythatth
Thehumannosehasgiventothelanguageoftheworldmanyinterestingexpressions.Ofcourse,thisisnotsurprising.Withoutt
ThebasicflagoftheUnitedStatesisoneoftheworld’soldestnationalflags.OnlythebasicflagsofAustria,Denmark,Great
随机试题
体外循环手术病人前应当停用的药物包括()
护理程序的理论框架是
A.絮凝B.增溶C.助溶D.潜溶E.盐析碘酊中碘化钾的作用是
建设工程目标控制中,在采取合同措施时要特别注意合同中所规定的业主和( )的义务和责任。
资产与所有者权益在数量上始终是相等的。()
会计从业资格证书的管理包括上岗注册登记、离岗备案、调转登记和变更登记。()
【2015年】某公司计划投资建设一条新生产线,投资总额为60万元,预计新生产线投产后每年可为公司新增净利润4万元,生产线的年折旧额为6万元,则该投资的静态回收期为()年。
SPM是瑞文测验()的英文缩写。
[*]①首先,本题要定义多个变量,包括两个循环变量循环i、j:用来存放四位数分解之后各位数的变量qw(千位)、bw(百位)、sw(十位)和gw(个位);两个用来存放重新组合数字的变量newV1和newV2。②通过for循环依次对数组中的每个四位数
________hisphonenumber,Iwouldhavemadeacalltohim.
最新回复
(
0
)