首页
登录
职称英语
California has been facing a drought for many years now, with certain areas e
California has been facing a drought for many years now, with certain areas e
游客
2023-06-22
7
管理
问题
California has been facing a drought for many years now, with certain areas even having to pump freshwater hundreds of miles to their distribution system. The problem is growing as the population of the state continues to expand. New research has found deep water reserves under the state which could help solve their drought crisis. Previous drilling of wells could only reach depths of 1,000 feet, but due to new pumping practices, water deeper than this can now be extracted (抽取). The team at Stanford investigated the aquifers (地下蓄水层) below this depth and found that reserves may be triple what was previously thought.
It is profitable to drill to depths more than 1,000 feet for oil and gas extraction, but only recently in California has it become profitable to pump water from this depth. The aquifers range from 1,000 to 3 ,000 feet below the ground, which means that pumping will be expensive and there are other concerns. The biggest concern of pumping out water from this deep is the gradual settling down of the land surface. As the water is pumped out, the vacant space left is compacted by the weight of the earth above. Even though pumping from these depths is expensive, it is still cheaper than desalinating (脱盐) the ocean water in the largely coastal state. Some desalination plants exist where feasible, but they are costly to run and can need constant repairs. Wells are much more reliable sources of freshwater, and California is hoping that these deep wells may be the answer to their severe water shortage.
One problem with these sources is that the deep water also has a higher level of salt than shallower aquifers. This means that some wells may even need to undergo desalination after extraction, thus increasing the cost. Research from the exhaustive study of groundwater from over 950 drilling logs has just been published. New estimates of the water reserves now go up to 2,700 billion cubic meters of freshwater. [br] What may happen when deep aquifers are used as water sources?
选项
A、People’ s health may improve with cleaner water.
B、People’s water bills may be lowered considerably.
C、The cost may go up due to desalination.
D、They may be exhausted sooner or later.
答案
C
解析
细节题。原文第四段第一、二句指出,深蓄水层的水含盐量较高,需要在抽取后进行脱盐处理,从而增加成本,由此可知,C项与原文相符,故答案为C。A、D两项原文均未提及,故排除。B项与原文不符,水源成本增加可能会提高水费,而不是降低,故排除。
转载请注明原文地址:https://tihaiku.com/zcyy/2772702.html
相关试题推荐
Sincethe1940s,southernCaliforniahashadareputationforsmog.Thingsar
Sincethe1940s,southernCaliforniahashadareputationforsmog.Thingsar
Sincethe1940s,southernCaliforniahashadareputationforsmog.Thingsar
Sincethe1940s,southernCaliforniahashadareputationforsmog.Thingsar
AfederaljudgeinCaliforniahasdismissedalawsuitagainsttheCoca-Colac
AfederaljudgeinCaliforniahasdismissedalawsuitagainsttheCoca-Colac
AfederaljudgeinCaliforniahasdismissedalawsuitagainsttheCoca-Colac
AfederaljudgeinCaliforniahasdismissedalawsuitagainsttheCoca-Colac
AfederaljudgeinCaliforniahasdismissedalawsuitagainsttheCoca-Colac
AfederaljudgeinCaliforniahasdismissedalawsuitagainsttheCoca-Colac
随机试题
ReadingonCellphones1.手机阅读越来越流行2.分析出现这一现象的原因3.我的观点Re
[originaltext]W:Mr.Deley,Ihavejustcheckedmynewapartment.Thekitchens
EarlierthisyearImetwithagroupofwomeninMatela,asmallfarmingvil
关于防水工程,下列说法不正确的是()。A.水泥砂浆防水层通常称为刚性防水层,它
(2018年真题)关于我国证券公司短期融资券,说法正确的是( )。 Ⅰ.不属
阴阳学说认为,机体健康时,阴阳之间的关系为:A.阴阳转化 B.阴阳对立 C.
《保险法》中定义的保险是()概念。 A.广义 B.狭义 C.商业
案例九: 下面是某求助者的MMPI测验结果: 社会病态量表的K校
A.含咖啡因的抗感冒药 B.含氯苯那敏的抗感冒药 C.含伪麻黄碱的抗感冒药
A
最新回复
(
0
)