首页
登录
职称英语
Acid rain, which is a form of air pollution, currently becomes a subject of
Acid rain, which is a form of air pollution, currently becomes a subject of
游客
2023-07-02
24
管理
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. [br] Why is acid rain little understood?
选项
A、Because it is a new phenomenon.
B、Because it is not frequent enough.
C、Because its formation is complex.
D、Because it is difficult to study it.
答案
C
解析
细节题。根据题干关键词little understood定位第三段第二句Becuase the chemical reactions involved in the production of acid rain in theatmosphere are complex and as yet little understood,因为大气中酸雨的形成过程涉及复杂的化学反应,人们对酸雨了解甚少。故答案为C项。
转载请注明原文地址:https://tihaiku.com/zcyy/2800313.html
相关试题推荐
Acidrain,whichisaformofairpollution,currentlybecomesasubjectof
Acidrain,whichisaformofairpollution,currentlybecomesasubjectof
Acidrain,whichisaformofairpollution,currentlybecomesasubjectof
Itwasoncethoughtthatairpollutionaffectedonlytheareaimmediatelyar
Itwasoncethoughtthatairpollutionaffectedonlytheareaimmediatelyar
Accordingtonewgovernmentfigures,pollutionlevelsarerisingagainafter
Accordingtonewgovernmentfigures,pollutionlevelsarerisingagainafter
Accordingtonewgovernmentfigures,pollutionlevelsarerisingagainafter
Accordingtonewgovernmentfigures,pollutionlevelsarerisingagainafter
Accordingtonewgovernmentfigures,pollutionlevelsarerisingagainafter
随机试题
Fornearlytwoyears,MariselaEscobedoOrtizledaone-womancampaigntobr
ThomasDeQuincey’s______hasimpactedinfluenceonJamesJoyceandT.S.Eliot
ThanksgivingDayisthemosttrulyAmericanofthenationalholidaysinthe
蔡元培的基本思想。
5A戒烟干预模式包括()A.询问 B.咨询 C.建议 D.评估
运用折现现金流量法评估矿业权价值时,其中投资支出项目主要包括()。A、销售税金
患者,女性,54岁。心悸2小时来院急诊。查体:心率145次/分,脉率105次/分
在()中,进行卖出套期保值交易,可使保值者实现净盈利。A.正向市场中,基差走强
根据《民事诉讼法》,申请仲裁裁决强制执行的期间为( )。A.6个月 B.1年
女性,46岁,主诉排便时阴道脱出一块状物,检查时用力时阴道前壁脱出,宫颈外口露于
最新回复
(
0
)