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
73
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/wJlQKKKQ
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...
随机试题
实现初级卫生保健的先导是 A、社区康复 B、健康教育 C、治疗 D、预防
为了(),根据《中华人民共和国建筑法》、《建设工程质量管理条例》等有关法
假设某银行的所有资本为200亿元人民币,风险加权资产为1500亿元人民币,则其资
现代营销最基本的方法是分层营销。()
药物信息管理的原则为
某百货商场购入一批名牌箱包,其进货总价格为10.56万元。先以200元/件的价格售出300件后,为扩大销售,经市场调研后得知,此时若降价20%,预计销售量...
某城市轨道交通地上线路的声环境影响评价工作等级为一级,一般情况下,其评价范围为()。A:道路中心线外两侧300m以内B:道路中心线外两侧200m以内C:道路
在室内消火栓系统中,无缝钢管采用法兰连接,在保证镀锌加工尺寸要求的前提下,其管道配件短管连接应采用()。A.法兰连接B.螺纹连接C.焊接连接D.卡箍管接
在行政程序中,行政程序法的基本制度包括()。A:告知制度B:参与制度C:听证制度D:救济制度E:信息公开制度
【案例3】(本题10分。)2019年6月6日,A公司向B公司签发了一张金额为10万元的商业承兑汇票,该汇票载明出票后1个月付款,甲公司为付款人。2019年...