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
共用题干 第一篇Water Resources on the EarthThe second most important constituent(构成...
共用题干 第一篇Water Resources on the EarthThe second most important constituent(构成...
admin
2020-12-24
15
问题
共用题干
第一篇
Water Resources on the Earth
The second most important constituent(构成成分)of the biosphere(生物圈)is liquid water. This can only exist in a very narrow range of temperatures,since water freezes at 0℃and boils a 100℃.Life as we know it would only be possible on the surface of a planet which had temperature: somewhere within this narrow range.
The earth's supply of water probably remains fairly constant in quantity.The total quantity of water is not known very accurately,but it is about enough to cover the surface of the globe to a depth of about two and three-quarter kilometers.Most of it is in the form of the salt water of the oceans一about 97 percent. The rest is fresh.But three-quarters of this is in the form of ice at the poles and or mountains and cannot be used by living systems until melted.Of the remaining fraction,which h somewhat less than one percent of the whole.There is 10—20 times as much stored underground water as there is actually on the surface.There is also a tiny,but extremely important fraction of the water supply which is present as water vapour in the atmosphere.
Water vapour in the atmosphere is the channel through which the whole water circulation(循环) of the biosphere has to pass.Water evaporated(蒸发)from the surface of the oceans,from lakes and rivers and from moist(潮湿的)earth is added to it. From it the water comes out again as rain or snow,falling on either the sea or the land. There is,as might be expected, a more intensive evaporation per unit area over the sea and oceans than over the land,but there is more rainfall over the land than over the oceans and the balance is restored by the run off from the land in the form of rivers.
选项
There is more of rainfall________.
A:over the mountains than over the rivers
B:over the rivers than over the mountains
C:over the land than over the oceans
D:over the oceans than over the land
答案
C
解析
文章第一段的第二句讲到液态水“only exist in a very narrow range of temperatures",虽然B(我们星球的表面)也有点道理,但是液态水对温度的要求很高,并非地球的所有表面都有液态水存在,所以答案D正确。
第二段第一句提到地球上水的供给“remains fairly constant in quantity",数量上是恒定的,它就没有增加也不会减少,只不过会以不同的形态出现,所以选择B(保持不变)。
问题是“地球上绝大部分淡水以什么形式出现?”第二段中间提到淡水时,说到“three-quarters of this is in the form of ice at the poles and on mountains",即3/4的淡水以冰的形式存在于两极和高山中,后面提到剩余部分的淡水存在于地下,但占比少于1%,所以选项A正确。
词义辫析题, fraction有“小部分”的意思,考虑到前面提到地球97%的水以海洋咸水的形式存在,剩下的3%则以冰的形式存在于两极和高山,余下的自然不多,所以选B。
第三段的最后一句说到“there is more rainfall over the land than over the oceans”,陆地的降雨比海洋要多,但没有提到河流和山脉的降雨比较,所以C正确。大气中的水蒸气是整个生物圈的水循环必经的途径。水从海洋的表面、湖泊、河流和潮湿的泥土中蒸发出来并补充到大气中。水以雨或雪的形式再次出现,降落在海洋或陆地上。可以预料到的是,海洋上空每单位面积的水蒸气比在陆地上空更为密集,但是,陆地比海洋有更多的降雨,水在陆地上以河流的形式流出以保持水资源的平衡。
转载请注明原文地址:https://ti.zuoweng.com/ti/tFMQKKKQ
相关试题推荐
下列关于负债的说法,错误的有()。A:负债是过去或目前的会计事项所构成的未来义务B:负债是企业过去经济利益的牺牲C:负债必须能以货币计量D:所有或有负债均
会计报表体系主要由()构成。A:资产负债表B:利润表C:现金流量表D:会计报表附注E:财务状况说明书
下列关于利润表的说法,错误的是()。A:利润表反映了企业一定期间经营成果B:企业应按收付实现制填制利润表C:利润表能够反映企业利润的构成及实现D:利润表有
GoingHerOwnWay Whenshewastwelve,Mariamadeherfirstimportantdecis...
GoingHerOwnWay Whenshewastwelve,Mariamadeherfirstimportantdecis...
GoingHerOwnWay Whenshewastwelve,Mariamadeherfirstimportantdecis...
GoodTableManners Mannersplayanimportantpartinmakingafavorableimp...
GoodTableManners Mannersplayanimportantpartinmakingafavorableimp...
Itisimportantforfamiliestoobservetheirtraditionsevenastheirchildr...
Youmustshineyourshoessinceyouattendtosuchanimportantparty.()A.lighte
随机试题
(44-45题共用题干) 女性,24岁,体重60kg。持续性腹痛,阵发性加剧伴
下列关于增值税纳税地点的表述,错误的是(???)。
Herfatherwasanartistwhosometimes_
商业银行应当严格执行会计准则和制度,及时准确的反映各项交易,确保财务会计信息的(
不属于浸出药剂的剂型有() A、汤剂 B、酒剂 C、散剂 D、浸膏剂
请画出66kV母差交流电流回路断线闭锁回路。
患儿男,3岁半。生长发育缓慢,反应迟钝,2岁半时会走、说话。身高80cm,体重12.5kg,皮肤粗糙,面色苍白,眼睑水肿,鼻梁低,表情呆滞,进食少,大便每...
骨关节炎的主要病变是A关节内化脓性感染B关节特异性炎症C关节软骨退行性变和继发性骨质增生D关节骨质疏松E骨与关节慢性疼痛
北京市旅游管理部门要调查了解2015年北京市常住居民出境旅游总消费金额,随机抽取3000位常住居民进行调查,该抽样调查的样本统计量是()A.随机抽取3000位常
下列各项关于企业全面风险管理的说法,错误的是()。A.全面风险管理既管理纯粹风险也管理机会风险B.全面风险管理主要由财务会计和内部审计等部门负责C.全面风险