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
2011-05-26
70
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. (76)
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.
(77)
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 fanning 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
推理判断题。根据文章第一段最后两句,作者引用了一些科学家的观点,空气中二氧化碳的增多会导致温室效应。然后作者提出一种假设,如果这是真的的话,那么南极的冰雪就会融化,将纽约等城市淹没。然而对这种观点的正确性从文章很难看出。另外文中第二段第三句提到“今天我们还不能确定这两种情况能否发生…”,所以作者的态度应是 uncertain”。
转载请注明原文地址:https://kaotiyun.com/show/N7qC777K
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
主张文章应“有补于世”、“以适用为本”的文学家是【】
Thepriceofaluminumwassharplyreducedwhenpeoplediscoveredanewrefiningprocesswiththeaidof______.Aluminumisfou
Theseanimalsaremore______greencolour;theyalwaysmakeforthetagwithvariousshadesofgreen.
BecauseMaxhadlungcancer,hestopped______.
Thefishingboatthathasbeentiedupatthepierforthreedays______finallyonitswaythismorning.
Theguides______thetouriststogetheratthehotelgate.
Doyoufindgettingupinthemorningsodifficultthatit’spainful?This【B1】calledlaziness,butDr.Kleitmanhasanewexp
"Iloveyou,Bob.""Iloveyou,too,Nancy."Itwas2a.m.andIwashearingmyparents’voicesthroughthethinwallseparating
Manyanimalshaveanexcellentsenseofsmell,whichtheyuseinhunting.Ontheotherhand,theireyesightmaybepoor.Dogs,f
随机试题
分段讲解法就是对那些规模较大、内容较丰富的景点,导游人员将其分为前后衔接的若干部分来逐段进行讲解的导游方法。()
保密的重要性可除外哪一项
患者胃痛暴作,恶寒喜暖,脘腹得温则痛减,口和不渴,喜热饮,舌苔薄白,脉弦紧。治疗应首选
某砂土土样的天然孔隙比为0.461,最大孔隙比为0.943,最小孔隙比为0.396,则该砂土的相对密实度为:
用以衡量公司偿付借款利息能力的指标是( )。
支票属于见票即付的票据,支票的出票日实质上就是到期日。()
所谓“业余”不但表现在知识背景和政治认识方面,而且还表现在政治行为上。大部分国家的议员一般都有自己的办公室和政治团队。也就是说,他们不是一个人在战斗,而是有一群职业选手帮他们收集信息、确定议题、商讨策略、沟通媒体、联系民众。但在中国,代表们这样做总会遇到意
“把一切事物教给一切人的普遍的艺术”是()中阐述的思想。
如果Ω是半径为R的球,是以Ω的大圆为底面、顶点在Ω表面上的一个圆锥,那么的体积是Ω体积的[].
有下列程序段,单击命令按钮执行程序后,输出结果为()。OptionBase1PrivateSubCommand1_Click()Dimxx=Array(23,-5,17,38,-31,46,11,8,5,-4)
最新回复
(
0
)