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
2023-07-04
23
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/2808520.html
相关试题推荐
Environmentalpollutionisatermthatreferstoallthewaysbywhichhuman
Environmentalpollutionisatermthatreferstoallthewaysbywhichhuman
Environmentalpollutionisatermthatreferstoallthewaysbywhichhuman
Environmentalpollutionisatermthatreferstoallthewaysbywhichhuman
Environmentalpollutionisatermthatreferstoallthewaysbywhichhuman
Environmentalpollutionisatermthatreferstoallthewaysbywhichhuman
Environmentalpollutionisatermthatreferstoallthewaysbywhichhuman
Today’slectureisonthesubjectofPronunciationAchievementFactors.
Today’slectureisonthesubjectofPronunciationAchievementFactors.
Today’slectureisonthesubjectofPronunciationAchievementFactors.
随机试题
At_____,photographyisachemicalprocess,duringwhichalight-sensitivemater
[originaltext]TheEuropeanCentralBankreleasedanewroundofmeasuresto
对于地面以下或防潮层以下的砌体,不宜采用()。A.混合砂浆 B.烧结多孔砖
下列原位测试方法中,不适用于测定饱和软粘土的抗剪强度及灵敏度的是()。A.荷
下列功能与肝主疏泄关系不密切的是A.促进血液津液的运行 B.调畅气机 C.纳
Thechangeinthatvillagewasmiraculou
在图示电路中,当开关S闭合后,流过开关S的电流I为()。 A.1mA.
(2019年真题)患者,女,12岁,3天前开始发热,伴有咳嗽咳痰。体温39.2℃
抗抑郁药的合理应用与药学监护点是()A.剂量逐步递增,尽可能采用最小有效剂量,使
造成设备第一种无形磨损的原因是()。A.通货膨胀导致货币贬值 B.技术进步创
最新回复
(
0
)