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
专升本
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
2011-07-31
49
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 profits, 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?
This passage is primarily about ______ .
选项
A、the greenhouse effect
B、the burning of fossil fuels
C、the potential effect of air pollution
D、the likelihood of a new ice age
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/ZglC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
Oneofthemostauthoritativevoicesspeakingtoustodayis,ofcourse,thevoiceoftheadvertisers.Itshoutsatusfromthe
Thenumberofpeopleborrowingfrompubliclibrarieshasdecreased,(butbooksalesarerising).
Ithasoftenbeensaidbypeopleinvolvedinlanguageteachingthatastudentwhoreallywantstolearnwillsucceedwhateverth
Experiencedpeoplecan(tellimmediatelywhichoneisreal).
Thepassagesuggeststhat______.Thedrop-outrateofcollegestudentsseemstogoupbecause______.
Itisphysicallyimpossibleforawall-educatedintellectual,orabravemantomakemoneythechiefobjectofhisthoughts;as
Itisphysicallyimpossibleforawall-educatedintellectual,orabravemantomakemoneythechiefobjectofhisthoughts;as
Thebookstorehasnotordered______textbooksforallthestudentsinthecourse.
MaryAnning(1799-1847)wasaBritishfossilhunterwhobeganfinding【21】asachild,andsoonsupportedherselfandhervery【22】
I’djustassoon______thoseimportantpaperswithyou.
随机试题
Christmaswascoming.Wewerehaving【C1】______weatherinLondonthatRobert【C2】______ChristmasweekinanItalianseasidewehad
A、排泄代谢废物B、调节激素分泌C、调节水平衡D、调节酸碱平衡E、调节电解质平衡醛固酮的主要功能是()
A尿钠减少,尿比重升高B尿钠减少,尿比重降低C尿钠增多,尿比重升高D尿钠增多,尿比重较低E尿钠正常,尿比重降低非少尿型急性肾衰竭时可出现
一婴儿,4个月大时,于两侧耳后出现密集分布的粟粒大小丘疹,伴有小水疱,并逐渐出现渗出和糜烂,边界不清,最可能的诊断是
行政许可实施制度中存在创新机制,下列行为中属于这种创新机制的有()。
基金客户服务的安全第一原则要求()。
一名游客购物回饭店后,因对商品质量不满意而要求导游员帮他退换,导游员应()。
(2015年真题)在儿童的日常生活、游戏等活动中,创设或改变某种条件,以引起儿童心理的变化,这种研究方法是()。
国家功能一般分为()。
在窗体上画一个命令按钮,然后编写如下事件过程:PrivateSubCommandl_Click()a$=InputBox(“请输入一个二进制数”)n=Len(a$)Fori=1TonDec=Dec*2+
最新回复
(
0
)