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
America is in no immediate danger of "running out of water". People in the West have been aware that water is a precious commodi
America is in no immediate danger of "running out of water". People in the West have been aware that water is a precious commodi
admin
2021-12-26
46
问题
America is in no immediate danger of "running out of water". People in the West have been aware that water is a precious commodity and must be conserved. In the damp East, an excess of water led to complacency until two factors created concern over our water supply. First, the periods of drought from 1961 to 1966 in the Northeast affected crop production and used up the surface and ground water supplies. Second, attention was called to rapid increases in the rates of pollution of these waters resulting from increased urban and industrial growth. As a result, there is an increasing awareness of the need for conserving the quantity and quality of our nation’s water supplies.
Water is a renewable resource, but it is not exhaustible. When used for municipal, industrial, or agricultural purposes, it is not destroyed, but generally finds its way back into our water supply. This used water now carries some waste materials. These dirty waters are often dumped into large bodies of water or are disposed of on land. In the latter instance, evaporation concentrates some of the wastes on the soil surface. On the other hand, water moving through the soil will eventually carry some of the wastes down into the ground water supplies. Eventually, all water evaporates and later returns to the earth as rain or snow in a relatively purer state.
Through this never-ending cycle, there is just as much water in this country now as there ever was. The amount, however, does not increase. Our rapid population growth and our agricultural and industrial expansion have caused our water needs to soar. By withdrawing water from streams too quickly, we have in some instances upset the balance of nature’s built-in renewal processes for conserving water. As a result, some of our streams and lakes have become "wet deserts. " There is still plenty of water in them, but its water is so polluted that it supports almost no life at all.
Water is relatively purer in________.
选项
A、fast moving streams and rivers
B、underground water supplies
C、mountainous areas
D、rain and snow
答案
D
解析
细节题。根据文章第二段最后一句“Eventually,all water evaporates and later returns to the earth as rain or snow in a relatively purer state.”可知最终所有的水蒸发,然后以降雨或降雪等相对较纯净的形式回到地球,故选D。
转载请注明原文地址:https://kaotiyun.com/show/RmNd777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Whendidthetwopeopleseeeachotherlasttime?
Oneoftheadvantagesoftakingnotesisthatitforcesyoutopaycloserattentiontotheclasslecture.Ifyoulisten【C1】_____
Readthetextsfromthe"LETTERS"sectionofamagazineinwhichfivepeoplecommentedonthemagazinesstoryofBono,asuperst
Blocksof"high-rise"flatshavebeenbuiltinlargenumbersinLondonandinmanyotherbigcities.JustaftertheSecondWorld
InBritain,winteristheseasonnotonlyforvisitstothetheatre,opera,concertsandballet,butalsoforshoppingorforsi
InBritain,winteristheseasonnotonlyforvisitstothetheatre,opera,concertsandballet,butalsoforshoppingorforsi
InBritain,winteristheseasonnotonlyforvisitstothetheatre,opera,concertsandballet,butalsoforshoppingorforsi
Howshouldthewomanpayforthebooksasthemansuggests?
Whatdoesthewomansuggestthemando?
Whatdoesthewomansuggestthemando?
随机试题
A.IVF-ETB.IUIC.ICSID.GIFTE.COH
关于肿瘤相关抗原说法错误的是
开髓时,下列哪个牙容易发生髓室底穿通
下列除哪项外均为腹痛的治疗原则
A、狭叶番泻叶B、尖叶番泻叶C、耳叶番泻叶D、罗布麻叶E、大青叶叶长卵形或卵状披针形,叶端急尖,叶基稍不对称。无毛或近无毛的药材为
关于仲裁庭组成的说法,正确的有()。
反映了某公司股权价值相对其净利润的倍数的是()。
下列有关文学常识的表述,不正确的一项是()
宏观地说,学问就好比叠罗汉,总是一代代站在前人的肩膀上成长起来。将原始资料和典籍开放,便于公众查阅,有利于一个国家整体学术气氛的活跃、国民素质的提高。这些文献,不应该是封闭保守的。你守住,设置重重门槛,它们便成了一些被虫蛀的死书,你将其开放,让国民阅读,它
马克思指出:“作为劳动过程和价值形成过程的统一,生产过程是商品生产过程;作为劳动过程和价值增殖过程的统一,生产过程是资本主义生产过程,是商品生产的资本主义形式。”这段论述表明
最新回复
(
0
)