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
40
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.
Beds of rock salt are found in every part of the world.
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/dJlQKKKQ
相关试题推荐
下面的短文有15处空白,请根据短文内容为每处空白确定1个最佳选项。 YoungAdultsWhoExerciseGetHigher...
下面的短文有15处空白,请根据短文内容为每处空白确定1个最佳选项。 YoungAdultsWhoExerciseGetHigher...
下面的短文有15处空白,请根据短文内容为每处空白确定1个最佳选项。 YoungAdultsWhoExerciseGetHigher...
下面的短文有15处空白,请根据短文内容为每处空白确定1个最佳选项。 YoungAdultsWhoExerciseGetHigher...
下面的短文有15处空白,请根据短文内容为每处空白确定1个最佳选项。 YoungAdultsWhoExerciseGetHigher...
下面的短文有15处空白,请根据短文内容为每处空白确定1个最佳选项。 YoungAdultsWhoExerciseGetHigher...
下面的短文有15处空白,请根据短文内容为每处空白确定1个最佳选项。 YoungAdultsWhoExerciseGetHigher...
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。 Mt.DesertIs...
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。 Mt.DesertIs...
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。 Mt.DesertIs...
随机试题
某工程项目为赶工期而昼夜施工,严重影响了相邻小区居民的休息,经现场劝阻无效,居民
王某是定居美国的中国公民,2013年10月回国为父母购房。根据我国相关法律规定,
在施工过程中必须发生,但在投标时很难具体分项预测的二次搬运费和冬雨期施工费用的计
关于2013年1~5月保险业经营状况,能够从上述资料中推出的是:
属于城市供水工程总体规划阶段主要内容的是()。 A.确定城市自来水厂布局和供
2014年12月,习近平总书记在江苏调研考察时提出,要协调全面推进建设小康社会、全面深化改革、全面推进依法治国、全面从严治党,推动改革开放和社会主义现代化...
表现为椎旁脓肿和腰大肌脓肿的是A.颈椎结核B.胸椎结核C.胸腰椎结核D.尾椎结核E.腰骶段结核
急性重型肝炎防治肝性脑病措施中,哪项是不正确的 A髙蛋白饮食B口服乳果糖C给以六合氨基酸D脱水治疗E给予左旋多巴治疗
下列可与西药利尿药联用,增强利尿作用的有A:木防己汤B:真武汤C:小青龙汤D:越婢加术汤E:分消汤
共用题干 NappingtoaHealthierHeart?1Researcherssaytheyhavedevelopedasi...