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
30
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
根据第二段第二句话“A drop of just a few degrees…”可推知。
转载请注明原文地址:https://kaotiyun.com/show/Cmjd777K
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
Therewasonethoughtthatairpollutionaffectedonlytheareaimmediatelyaroundlargecitieswithfactoriesandheavyautom
Ifwomenaremercilesslyexploited(剥削)yearafteryear,theyhaveonlythemselvestoblame.Becausetheytrembleatthethought
Travelingcanbefunnyandeasy.Avacationtriptoanotherpartofthecountryisespecially【C1】______whenthetravelingcondit
Travelingcanbefunnyandeasy.Avacationtriptoanotherpartofthecountryisespecially【C1】______whenthetravelingcondit
Travelingcanbefunnyandeasy.Avacationtriptoanotherpartofthecountryisespecially【C1】______whenthetravelingcondit
Travelingcanbefunnyandeasy.Avacationtriptoanotherpartofthecountryisespecially【C1】______whenthetravelingcondit
Travelingcanbefunnyandeasy.Avacationtriptoanotherpartofthecountryisespecially【C1】______whenthetravelingcondit
WherewasAltheaborn?
随机试题
措施项目费的计算方法中,具有简单明了,公式的科学性、准确性难以把握等特点的方法是()。
下列选项中,属于基本养老保险的是()。
小脑幕切迹疝出现患侧瞳孔散大,是由于患侧哪一支颅神经受压
口蹄疫病毒的主要传播途径是
已知数字信号A和数字信号B的波形如图所示,则数字信号F=A+B的波形为()。
下列属于视频输入设备的有()。
下列对临海古长城的描述中,正确的是()。
应聘者:招聘会:招聘者
中国梦不仅在国内引发强烈共鸣,而且在国际社会也产生了强烈反响。实现中国梦任重而道远,需要我们锲而不舍、驰而不息的艰苦努力。实现中国梦必须
He(work)______inthatcityforeightyearsbeforehemovedhere.
最新回复
(
0
)