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
64
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.
We have not fully understood how salt got into the ocean.
选项
A Right B Wrong C Not mentioned
答案
A
解析
转载请注明原文地址:https://ti.zuoweng.com/ti/plsQKKKQ
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。
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...
随机试题
溴化锂制冷机顶距制冷机房板下净高为( )。[2011年真题] A、1.0m
老年痴呆的病程特点为 A.只发作一次 B.发作缓解型 C.进行性发展加重
下面哪一条是错误的 A.罗哌卡因是酰胺类局麻药 B.罗哌卡因的心脏毒性较低
腹部CT检查时需口服阴性对比剂的疾病是 A.脂肪肝 B.肝癌 C.胰腺炎
当事人对法院作出的下列哪些民事决定有权申请复议?
要约人在要约中提出合同的基本条件,并表明愿意以此条件订立合同。如果受要约人认为要
与慢性支气管炎发病无关的是A.呼吸道反复病毒感染B.肺孢子虫感染C.呼吸道细菌感染D.大气污染
专家会议预测法的形式有哪些?
下列政府对进出口贸易干预的措施中,不属于非关税限制的有()。A.自愿出口限制B.出口退税C.反倾销税D.出口信贷E.歧视性公共采购
采用销售百分比法预测资金需求量时,下列各项中,属于非敏感性项目的是()。A.现金B.存货C.长期借款D.应付账款