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
2014-01-27
42
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/mgjd777K
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
TextAfterlunch,withoutpermissionfromtheirparents,thetwoboyssetofftoexplorethepartofthebeachwhich【C1】_____
TextAfterlunch,withoutpermissionfromtheirparents,thetwoboyssetofftoexplorethepartofthebeachwhich【C1】_____
TextAfterlunch,withoutpermissionfromtheirparents,thetwoboyssetofftoexplorethepartofthebeachwhich【C1】_____
Today’spolicemeninlargecitiesthroughouttheworld【C1】______onmodeminventionstohelpthemintheirwork.Inmostplacesm
Today’spolicemeninlargecitiesthroughouttheworld【C1】______onmodeminventionstohelpthemintheirwork.Inmostplacesm
Today’spolicemeninlargecitiesthroughouttheworld【C1】______onmodeminventionstohelpthemintheirwork.Inmostplacesm
Rhythmandblues,orR&B,isa【C1】______ofmusicthatcameoutofthejazz,bluesandgospelmusicthatwasbeing【C2】______byAf
Rhythmandblues,orR&B,isa【C1】______ofmusicthatcameoutofthejazz,bluesandgospelmusicthatwasbeing【C2】______byAf
随机试题
ThepersonItrustmostisafriend________Ihavebeencooperatinginbusinessforalongtime.
商业银行向其他金融机构贷放出短期或临时性资金时,应设置和运用的主要账户是()
把课程用于教育科学的专门术语,始于()。
组合:分解
A、 B、 C、 D、 C题干第四个图形比较特殊,为两条相交的直线,此图形决定了不能从数量上得到规律,我们来寻找图形的共同点。发现题干图形均为直线图形,选项中只有C项为直线图形,因此正确答案为C。此题通过观
【格里哥利改革】
是否存在单个的特征觉察器皮层细胞?
按照金融交易的交割期限,可以将金融市场划分为货币市场和资本市场。
《中华民国宪法(草案)》(1913年)又称为()。
Theprocessofperceivingothersisrarelytranslated(toourselvesorothers)intocold,objectiveterms"Shewas5feet8inch
最新回复
(
0
)