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
A、We should drink more hard water. B、We should drink more soft water. C、Ground water is good for the elderly people. D、Ground wa
A、We should drink more hard water. B、We should drink more soft water. C、Ground water is good for the elderly people. D、Ground wa
admin
2012-09-19
50
问题
The ground water can be divided into "soft water" and "hard water". Soft water has tew impurities or none at all while hard water contains some more dissolved minerals. In general, hard water is drinkable, but it may have a slight taste because of various minerals.
One place where hard water can be found is a ground underlying a base of limestone arid shale. Rainwater dissolves materials as it comes down and this results in water’s taste and hardness.
We can sometimes find ground water that is almost as soft as rainwater under a bare sandy area. These days hard water from the underground is popular among the citizens of this country. They believe that mineral water is good for health, but some bard water has the dissolved minerals that are harmful to our body.
Scientists suggest that all the ground water should be specially treated before it is sold.
选项
A、We should drink more hard water.
B、We should drink more soft water.
C、Ground water is good for the elderly people.
D、Ground water has to be treated before we drink it.
答案
D
解析
从Scientist suggest that all the ground water should be specially treated before it is sold.可知,科学家建议地袁水必须在经过处理后才能饮用。
转载请注明原文地址:https://kaotiyun.com/show/br57777K
0
大学英语四级
相关试题推荐
From1760sonwards,therewasagreatchangeinthewaypeoplelived.Machineswere【B1】______thatcouldmakethingsmuchfaster
From1760sonwards,therewasagreatchangeinthewaypeoplelived.Machineswere【B1】______thatcouldmakethingsmuchfaster
From1760sonwards,therewasagreatchangeinthewaypeoplelived.Machineswere【B1】______thatcouldmakethingsmuchfaster
AlcoholismIntheUnitedStatesalone,alcoholismaffectsmillionsofpeopleandcoststhecountrybillionsofdollarseach
Forthispart,youareallowed30minutestowriteanessayonHowtoSucceedintheFutureCareer.Youshouldwriteatleast12
A、Italianpeople.B、Germanpeople.C、Britishpeople.D、Frenchpeople.D
A、Rainwaterdissolvesmaterialsasitcomesdownabaseoflimestoneorshale.B、Peopleputdissolvedmaterialsintothesoftwa
Thehumanbrainisthemostcomplexstructureintheuniverse.Itcontains【B1】______100billionnervecells,eachofwhichhast
Thehumanbrainisthemostcomplexstructureintheuniverse.Itcontains【B1】______100billionnervecells,eachofwhichhast
随机试题
关于三尖瓣狭窄,以下哪种说法不正确
16岁男孩,午饭后遇车祸,腹腔内出血、休克,在快速输血同时准备手术,应选择
颈外静脉穿刺输液时,输液不畅,注意是否出现以下哪些情况()。
证人证言必须在法庭上经过的讯问质证,并经过( )查实以后,方能作为本案的根据。
则客户保证金账户余额为()元
国内第一只以债券投资为主的证券投资基金是()。
在椭圆=1的第一象限部分上求一点P,使该点处的切线,椭圆及两坐标轴所围图形的面积最小.
设f(x,y)在全平面有连续偏导数,曲线积分∫L(x,y)dx+xcosydy在全平面与路径无关,且∫(0,0)(t,t2)dx+xcosydy=t2,求f(x,y).
A.whileB.darkC.devisedD.whereasE.specificF.agreeableG.regularH.stimu
Thetaipanisanaggressivehunter,movingatspeedthroughgrasslandswithease.Onfindingitspreybyscent,thereptileflin
最新回复
(
0
)