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
2024-02-05
38
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(梳)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] 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
转载请注明原文地址:https://tihaiku.com/zcyy/3424786.html
相关试题推荐
Itwasoncethoughtthatairpollutionaffectedonlytheareaimmediatelyar
Itwasoncethoughtthatairpollutionaffectedonlytheareaimmediatelyar
Itwasoncethoughtthatairpollutionaffectedonlytheareaimmediatelyar
Environmentalpollutionisatermthatreferstoallthewaysbywhichhuman
Environmentalpollutionisatermthatreferstoallthewaysbywhichhuman
Environmentalpollutionisatermthatreferstoallthewaysbywhichhuman
Environmentalpollutionisatermthatreferstoallthewaysbywhichhuman
Environmentalpollutionisatermthatreferstoallthewaysbywhichhuman
Environmentalpollutionisatermthatreferstoallthewaysbywhichhuman
Environmentalpollutionisatermthatreferstoallthewaysbywhichhuman
随机试题
In1791,theFrenchnation,inthemidstofarevolution,wishedtobreakwi
银行对项目授信的分类管理,根据借款项目对环境的影响可分为()。A.严重改变
我国教师的身份特征是( )。A.国家干部 B.专业人员 C.公务员 D.
某教师上作文课时,搬来一把椅子坐在学生面前,然后拿出一支烟,慢腾腾地抽起来。学生
A.宫颈刮片细胞学检查 B.分段诊断性刮宫 C.接触性出血 D.月经量增多
使用中消毒液染菌量为A.≤10cfu/ml B.≤50cfu/ml C.≤1
(2021年真题)依法必须招标的项目,出现下列情形的,应当重新招标的有( )。
施工单位对于质量缺陷的维修过程,( )应予监督,合格后予以签认。A.建设单位
相邻两工序在同一施工段上相继开始的时间间隔称( )。A.流水作业 B.流水节拍
早产儿使用铁剂预防贫血起始的月龄是( )。A.1个月 B.2个月 C.3个
最新回复
(
0
)