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
2011-03-01
29
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?
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/tmjd777K
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
WhenIheardthatMrs.Thatcherresigned,Icalledher.Iwantedhertoknowthatmyheartwaswithher,andthatIthoughtEngl
MeriwetherLewiswasbornnearCharlottesville,VirginiaonAugust19,1775.Forseveralyearshewasthepersonalsecretaryof
Therewasonethoughtthatairpollutionaffectedonlytheareaimmediatelyaroundlargecitieswithfactoriesandheavyautom
Therewasonethoughtthatairpollutionaffectedonlytheareaimmediatelyaroundlargecitieswithfactoriesandheavyautom
BettyplanstohaveatravelinGermanythissummer.Therefore,shewantstowritealettertoapublishinghousetobuysomebo
Travelingcanbefunnyandeasy.Avacationtriptoanotherpartofthecountryisespecially【C1】______whenthetravelingcondit
WherewasAltheaborn?
WherewasAltheaborn?
随机试题
有关精神病人治疗的特殊医德要求,不正确的是
各型牙内陷中最严重的是()
宗地图包括的主要内容有()。
我国预算外资金管理制度近期改革目标是()。
理赔实践是了解保险公司的又一重要方面,在购买设备运输保险之前,监理工程师及业主可从几个渠道获取有关公司理赔实践的信息,下面说法不属于其内容的是()。
某承包商在混凝土重力坝施工过程中,采用分缝分块常规混凝土浇筑方法。由于工期紧,浇筑过程中气温较高,为保证混凝土浇筑质量,承包商积极采取了降低混凝土的入仓温度等措施。在某分部工程施工过程中,发现某一单元工程混凝土强度严重不足,承包商及时组织人员全部进行了返
中央银行在公开市场上大量抛售有价证券,意味着货币政策()。
劳动力需求的自身工资弹性是()变动对工资率变动的反应程度。[2014年5月三级真题;2013年11月四级真题]
宋玉在形容他的邻人东家之子时说,这个女子“增之一分则太长,减之一分则太短,着粉则太白,施朱则太赤”。东家之子的美貌反映了()的辩证关系。
物联网技术作为智慧城市建设的重要技术,其架构一般可分为(7),其中(8)负责信息采集和物物之间的信息传输。(7)
最新回复
(
0
)