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
2023-07-08
32
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] 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Because the chemical reactions involved in the production of acid rain in the atmosphere 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/2818161.html
相关试题推荐
______(他被卷入了关于教育改革的辩论中).whichisthesubjectthathealwaystriestoavoid.Hewa
[originaltext]W:Theairqualityinthiscityisawful!(4)Thepollutionlevels
[originaltext]W:Theairqualityinthiscityisawful!(4)Thepollutionlevels
[originaltext]W:Theairqualityinthiscityisawful!(4)Thepollutionlevels
[originaltext]W:Theairqualityinthiscityisawful!(4)Thepollutionlevels
Acidrain,whichisaformofairpollution,currentlybecomesasubjectof
Acidrain,whichisaformofairpollution,currentlybecomesasubjectof
Itwasoncethoughtthatairpollutionaffectedonlytheareaimmediatelyar
Itwasoncethoughtthatairpollutionaffectedonlytheareaimmediatelyar
Environmentalpollutionisatermthatreferstoallthewaysbywhichhuman
随机试题
Onesummernight,onmywayhomefromworkIdecidedtoseeamovie.Iknew
对CD和CD分子的主要功能是辅助TCR识别抗原并参与T细胞活化信号的转导。CD和CD分子又称T细胞的辅助受体。
必须把教育摆在优先发展的战略地位思想的提出始自党的()。A.十五大 B.十四大
女性,31岁,孕8月余,检查发现淋球菌及沙眼衣原体感染,该患者发生的常见并发症是
商业银行绩效考评体系的基本要素不包括()。A.评价收益 B.评价对象
下列关于再生障碍性贫血的描述,错误的是A.贫血往往是慢性再生障碍性贫血的首发和主
休克患者尿量较少可选用下列药物中的A.多巴胺 B.多巴酚丁胺 C.肾上腺素
构支架存在异物,若异物摆动情况不满足安全距离要求,立即()(A)联系检修人员处
“账外账”是指不在依法设置的会计账簿上对经济业务事项进行统一登记核算,而另外私自
环磷酰胺抗肿瘤的机制是A.干扰核酸的合成 B.破坏DNA的结构与功能 C.嵌
最新回复
(
0
)