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 mere 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 mere soft water. C、Ground water is good for the elderly people. D、Ground wa
admin
2010-08-04
81
问题
The ground water can be divided into "soft water" and "hard water". Soft water has few 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 and 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 clays hard water from the underground is popular among the citizens of this country. They believe that mineral water is good for health, but some hard 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 mere 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
事实细节题。从"Scientists suggest that all the ground water should be specially treated before it is sold. "可知,科学家建议地表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/bvA7777K
0
大学英语四级
相关试题推荐
Somelivingcreaturesmay【B1】______theeffectsofcoldbymovingelsewhere(e.g.birds,fish)orby【B2】______movement(e.g.bee
Therearetwotypesofpeopleintheworld.Althoughtheyhaveequaldegreesofhealthandwealthandtheothercomfortsoflife
Shynessisthecauseofmuchunhappinessforagreatmanypeople.Shypeopleareanxiousandselfconscious;thatis,theyaree
HowtoLivetobe200TwentyyearsagoIknewamancalledJiggins,whohadtheHealthHabit.Heusedtotakeacoldplu
TheRiseofIndustryTherearenoaccidentsinhistory.It.isimpossibletomakesomethingoutofnothing.Historyisnotm
TheRiseofIndustryTherearenoaccidentsinhistory.It.isimpossibletomakesomethingoutofnothing.Historyisnotm
A、She’llhavetoworklonghours.B、She’llhavetoworkatthehotelduringtheschoolyear.C、Herrentwillbeexpensive.D、It
A、Theyarepleasedbyit.B、Theyfeelitisnottrue.C、Theyareverysensitivetoit.D、Theyfeeltheyareworthyofit.B题干询问害
A、Heispleasedtheexhibithasclosed.B、Hehasalreadyseentheexhibit.C、Heisdisappointedtheexhibithasclosed.D、Healr
Thehumanbraincontains10thousandmillioncellsandeachofthesemayhaveathousandconnections.Suchenormousnumbersused
随机试题
党的十八大根据我国经济社会发展的实际,在十六大、十七大确立的全面建设小康社会目标的基础上,对我国的发展提出了新的更高要求,明确指出:确保到2020年实现全面建成小康社会,确保()
下列哪个属于社区诊断所需的信息
至阴位于大敦位于
试通电和试运转前,应制订技术方案,其内容应包括()。
某企业属于以境内外全部生产经营活动申请并经认定的高新技术企业。2018年度境内所得应纳税所得额为150万元,全年已经预缴税款10万元,来源于境外税前所得50万元,境外实纳税款10万元,该企业当年汇算清缴应补(退)的税款为()万元。
甲公司为一综合服务公司,2015年11月,发生业务如下:(1)下设一旅游公司接待一200人的旅游团,每人收取旅游费1500元,另支付给其他单位住宿费200元/人,餐费50元/人,旅游景点门票350元/人,支付本公司导游费用150元/人。
定期租船条件下,船东负责租船人分别负责()。
小王从家走到考试地点,每小时走3公里,到考试地点后,发现忘了带准考证,立即掉头沿原路返回,每小时跑了6公里,到家后毫不耽搁,取了准考证立即赶往考试地点,每小时跑5公里,那么整个过程中小王的平均速度是每小时多少公里?
书最早是以昂贵的手稿复制品出售的,印刷机问世后,就便宜多了。在印刷机问世的最初几年里,市场上对书的需求量成倍增长。这说明,印刷品书籍的出现刺激了人们的阅读兴趣,大大增加了购书者的数量。以下哪项如果为真,最能质疑上述论证?
在利用结构化开发生命周期法开发系统时,在整个开发过程中最重要的环节是
最新回复
(
0
)