首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
下面的短文后列出了 7 个句子,请根据短文的内容对每个句子做出判断:如果该句提供的是正确信息,请选择A ; 如果该句提供的是错误信息,请选择B ; 如果该...
下面的短文后列出了 7 个句子,请根据短文的内容对每个句子做出判断:如果该句提供的是正确信息,请选择A ; 如果该句提供的是错误信息,请选择B ; 如果该...
admin
2020-12-24
21
问题
下面的短文后列出了 7 个句子,请根据短文的内容对每个句子做出判断:如果该句提供的是正确信息,请选择A ; 如果该句提供的是错误信息,请选择B ; 如果该句的信息文中没有提及,请选择C。
Where Has the Salt Come from?
Every now and then, we meet a fact about our earth that makes us feel strange and no answer for the fact has yet been found. Such a fact is the existence of salt in the oceans. How did it get there?
We simply do not know how the salt got into the ocean! We do know, of course, that salt is water-soluble, and so passes into the oceans with rainwater. The salt of the earth’s surface is constantly being dissolved (溶解) and is passing into the ocean.
But we do not know whether this can explain the huge quantity of salt in oceans. If all the oceans were dried up, enough salt would be left to build a wall 180 miles high and a mile thick. Such a wall would reach once around the world at the Equator (赤道)!
The common salt that we all use is produced from seawater or the water of salt lakes, from salt springs ( 源泉) and from deposits of rock salt. The concentration (浓度) of salt in seawater ranges from about three percent to three-and-one-half percent. The Dead Sea,
which covers an area of about 340 square miles, contains about 11, 600, 000, 000 tons of salt!
On the average, a gallon (加仑) of seawater contains about a quarter of a pound of salt. The beds of rock salt that are found in various parts of the world were all originally formed by the evaporation (蒸发) of seawater millions of years ago. It is believed that the
thick rock-salt deposits were formed after about nine-tenth of the volume of seawater had been evaporated.
Most commercial salt is obtained from rock salt. The usual method is to drill wells (井) down to the salt beds. Pure water is pumped down (抽进去) through a pipe. The water dissolves the salt and it is forced through another pipe up to the surface.
The author is sure that the dissolved salt from the earth’s surface is the only source of the huge quantity of salt found in oceans.
选项
A Right B Wrong C Not mentioned
答案
B
解析
转载请注明原文地址:https://ti.zuoweng.com/ti/JlsQKKKQ
相关试题推荐
下面的短文有5处空白,短文后有6个句子,其中5个取自短文,请根据短文内容将其分别放回原有位置,以恢复文章原貌。 ADoctorintheHou...
下面的短文有5处空白,短文后有6个句子,其中5个取自短文,请根据短文内容将其分别放回原有位置,以恢复文章原貌。 ADoctorintheHou...
下面的短文有5处空白,短文后有6个句子,其中5个取自短文,请根据短文内容将其分别放回原有位置,以恢复文章原貌。 ADoctorintheHou...
下面的短文有5处空白,短文后有6个句子,其中5个取自短文,请根据短文内容将其分别放回原有位置,以恢复文章原貌。 ADoctorinthe...
下面的短文有5处空白,短文后有6个句子,其中5个取自短文,请根据短文内容将其分别放回原有位置,以恢复文章原貌。
下面的短文后有2项测试任务:(1)第23~26题要求从所给的6个选项中为第1~4段每段选择1个最佳标题;(2)第27~30题要求从所给的6...
下面的短文后有2项测试任务:(1)第23~26题要求从所给的6个选项中为第1~4段每段选择1个最佳标题;(2)第27~30题要求从所给的6...
下面的短文后有2项测试任务:(1)第23~26题要求从所给的6个选项中为第1~4段每段选择1个最佳标题;(2)第27~30题要求从所给的6...
下面的短文后有2项测试任务:(1)第23~26题要求从所给的6个选项中为第1~4段每段选择1个最佳标题;(2)第27~30题要求从所给的6...
下面的短文有5处空白,短文后有6个句子,其中5个取自短文,请根据短文内容将其分别放回原有位置,以恢复文章原貌。 TheToughGrassth...
随机试题
违反《公司法》规定,虚报注册资本取得公司登记的,可对虚报注册资本的公司,处以虚报
男性,30岁。枢椎基底部骨折,但无移位,寰椎亦无移位。颏枕带牵引两周后,颈痛减轻
对防火分区进行检查时,应检查防火分区的建筑面积。根据现行国家消防技术标准的规定,
下列关于印花税说法错误的是()。
石缝间倔强的生命,常使我感动得潸然泪下。或者只就是一簇一簇无名的野草,春绿秋黄
最容易受艾滋病感染的几个高危人群是:()A、性乱人群、男性同性恋、吸毒人群B、高收入人群、青少年人群C、贫困群体、白领阶层D、社交活动较多人群
买卖双方分别承诺在将来某一特定时间按照事先确定的价格,购买和提供某种商品。这种金融衍生工具是( )。A.远期合约B.期权合约C.票据发行便利D.互换交易
郭女士,33岁,白带增多半年,近来出现性交后出血,妇科检查示宫颈重度糜烂,附件未见异常,为排除宫颈癌,首选的检查项目是()。A.阴道分泌物悬滴检查B.宫颈碘试
腹部闭合性损伤,持续腹痛,血压80/60mmHg,脉搏120次/分,诊断尚未确定,应给予的处置是A.吗啡止痛B.给水止渴C.苯巴比妥镇静D.扶持患者去放射
甲股份有限公司于2018年7月5日在上海证券交易所上市,公司章程对股份转让未作特别规定,也不涉及因司法强制执行、继承、遗赠等导致股份变动的情形。该公司有关...