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
Acid rain, which is a form of air pollution, currently becomes a subject of great debate because of widespread environmental dam
Acid rain, which is a form of air pollution, currently becomes a subject of great debate because of widespread environmental dam
admin
2017-08-23
33
问题
Acid rain, which is a form of air pollution, currently becomes a subject of great debate because of widespread environmental damage for which it has been blamed. It forms when oxides of sulfur (硫) and nitrogen (氮) combine with atmospheric moisture to yield sulfuric and nitric acids, which may then be carried long distances from their source before they drop in the form of rain. The pollution may also take the form of snow or fog or fall down in dry forms. In fact, although the term "acid rain" has been in use for more than a century—it is derived from atmospheric studies that were made in the region of Manchester, England—the more accurate scientific term would be "acid deposition". The dry form of such deposition is just as damaging to the environment as the liquid form.
The problem of acid rain originated with the Industrial Revolution, and it has been growing ever since. The severity of its effects has long been recognized in local settings, as exemplified by the spells of acid smog in heavily industrialized areas. The widespread destructiveness of acid rain, however, has become evident only in recent decades. One large area that has been studied extensively is northern Europe, where acid rain has eroded structures, injured crops and forests, and threatened life in freshwater lakes. In 1984, for example, environmental reports indicated that almost half of the trees in Germany’s Black Forest had been damaged by acid rain. The northeastern United States and eastern Canada have also been particularly affected by this form of pollution. Damage has also been detected in other areas of these countries and other regions of the world.
Industrial emissions have been blamed as the major cause of acid rain. Because the chemical reactions involved in the production of acid rain in the atmosphere are complex and as yet little understood, industries have tended to challenge such assessments and to stress the need for further studies and because of the cost of pollution reduction, governments have tended to support this attitude.
Studies released by the USA government in the early 1980s, however, strongly indicated industries as the main source of acid rain, in the eastern USA and Canada.
From the first sentence of the passage, we learn that_________.
选项
A、acid rain has caused air pollution
B、acid rain has caused widespread environmental damage
C、acid rain has become a much-studied subject
D、acid rain travels in all directions before it rains down
答案
B
解析
由题干中“the first sentence of the passage”可以定位到文中第一段第一句话。该句话提到酸雨是一种大气污染,它因已经造成了大范围的环境破坏而受到指责。
转载请注明原文地址:https://jikaoti.com/ti/c0jFFFFM
0
大学英语四级
相关试题推荐
TheUnitedStatesestablisheditsfirstnationalpark,Yellowstone,in1872.Yellowstonewasnotonlythefirstnationalparkin
TheUnitedStatesestablisheditsfirstnationalpark,Yellowstone,in1872.Yellowstonewasnotonlythefirstnationalparkin
TheLibraryofCongressisAmerica’snationallibrary.Ithasmillionsofbooksandotherobjects.Ithasnewspapers,popularpu
It’slikethis:Youpassapersononthesidewalkwearingapairofstylishshoesmadeoflightbrownleather,witharoundedto
A、Aprofessionalwindowcleaner.B、Anautomotivesalesperson.C、Aservicestationattendant.D、Asupermarketsalesman.C本题是人物身份题
A、Itcostsnomorethanthenormalconstruction.B、Itdoesapoorjoboffacingextremeweather.C、Itholdsupmuchbettertoex
Wouldn’titbegreatifyoucouldjustlookupattheskyandreadtheweatherforecastrightaway?Well,youcan.Theforecast
Wouldn’titbegreatifyoucouldjustlookupattheskyandreadtheweatherforecastrightaway?Well,youcan.Theforecast
A、Theyeattoomuchforlunch.B、Theysleeptoolittleatnight.C、Theirbodytemperaturesbecomelower.D、Theweatherbecomesa
随机试题
在下列诊断中,无须进行ICD-10编码的是
痛经气滞血瘀证首选的方剂是
A、蝉蜕B、防风C、天南星D、白僵蚕E、蜈蚣既止痉,又明目退翳的药物是()
患者,女性,30岁,结婚两年未孕,第三年怀孕两个月左右出现胎停育。当患者发现有少量出血时,家人就陪同其前往医院检查,经B超检查后发现胎儿没有心跳声,诊断为胎停育,故医生建议采用无痛人流手术。但家属不愿意就这样失去这个孩子,请求医生尽一切办法保胎。经过主治医
下列关于刑罚目的和功能,哪一项说法是正确的?
通信局(站)接地系统室外部分的作用是迅速泄放雷电引起的()。
校对工作中,可穿插进行的校对工序的有()。
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性:
中华人民共和国公民的人格尊严不受侵犯,禁止用任何方法对公民进行()。
已知函数f(x,y)满足=0,则下列结论中不正确的是()
最新回复
(
0
)