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
2019-05-15
68
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
细节题。文章第一段第五句和第二段第一句分别陈述了两种观点,根据第二段第三句可知,现在我们也无法确定会发生哪种情况,选项B(不确定会不会发生)正确。选项A(与科学家观点一致)和选项D(认为温室效应很快会摧毁世界)文章中并未提及。选项C(因为不切实际而反对)与文章不符,文中作者并未表现出反对的态度。故本题选B。
转载请注明原文地址:https://kaotiyun.com/show/oS3O777K
0
成人本科学位英语
相关试题推荐
ShanghaiAisBthemostlargestcitybypopulationCintheDPeople’sRepublicofChina.
HerFrenchwassolimitedthatshefounditdifficultto______herideas.
Mike:Itwouldbenicetogotothebeachsometimethisweekend.Carl:【D1】______What’stheweathergoingtobelike?Mike:Itis
Mr.Holmescalledatmanyschools______helivedtoaskthemtoaccepthisson,buthewasrefusedeverywhereforbeingablack.
Itisnecessarythatwe______haveagoodcommandofEnglishatcollege.
Theopeningbetweentherockswasverynarrow,buttheboysmanagedto()through.
Hersuggestionthateverybody()wasnotappreciated.
Throughthecallsystem,citizensdial3-1-1toreportnon-emergencyproblems.
Haveyoueverheardtheoldsaying"Neverjudgeabookbyitscover"?Thisisagoodruleto【C1】______whentryingtojudgethe
Followthedirectionsonthebottlecarefullywhen______.
随机试题
2003年“非典”期间,北京市海淀区某居民楼出现一个疑似病例,于是,有关行政部门要求该居民楼的其他居民在家中隔离观察30日,并且通过居民委员会向卫生部门每日报告居民个人体温。在这一事件中,有关行政部门运用了哪些类型的行政应急措施?()
建设项目选址意见书,按建设项目计划审批权限实行分级规划管理。但是中央各部门、公司审批的小型和限额以下的建设项目,由()规划行政主管部门核发选址意见书。
调整盘盈或盘亏财产的账面价值时,处理前“待处理财产损溢”的借方余额反映()。
在特别纳税调整中,对企业实施不具有合理商业目的而获取税收利益的避税安排,税务机关有权实施的调整方法有()。
佛教最早成为印度国教是在()。
(93年)设曲线积分∫L[f(x)一ex]sinydx-f(x)cosydy与路径无关,其中f(x)具有一阶连续导数,且f(0)=0,则f(x)等于
=________.
(1)打开工作薄文件EXCELXLS,将工作表sheet1的A1:D1单元格合并为一个单元格,内容水平居中,计算“增长比例”列的内容,增长比例=(当年人数-去年人数)/去年人数,将工作表命名为“招生人数情况表”。(2)选取“招生人数情况
BillGatesistherichestprivatecitizenintheworld.Thereisnothinghecan’t(31).Everymorning,whenhisalarmclockgoes
【B1】【B20】
最新回复
(
0
)