首页
登录
职称英语
WATER The second most important constituent of the biosphere
WATER The second most important constituent of the biosphere
游客
2025-01-11
33
管理
问题
WATER
The second most important constituent of the biosphere is liquid water. This can only exist
in a very narrow range of temperatures, since water freezes at 0℃ and boils at 100℃. This is
only a tiny range compared with the low temperatures of some other planets and the hot interior of
the earth, let the temperature of the sun. 【B1】 ______
As we know, life would only be possible on the face 【B2】 ______
of a planet had temperatures somewhere within this range. 【B3】 ______
The earth’s supply of water probably remains quite fairly 【B4】 ______
constant in quantity. A certain number of hydrogen atoms,
which are one of the main constituents of water,
are lost by escaping from the atmosphere to
out space, but they are probably just about replaced by 【B5】 ______
new water rising away from the depths of the earth during 【B6】 ______
volcanic action. The total quantity of water is not known,
and it is about enough to cover the surface of the globe 【B7】 ______
to a depth of about two and three-quarter kms.
Most of it —97%— is in the form of the salt waters of the
oceans. The rest is fresh, but three quarter of this is 【B8】 ______
in the form of ice at the Poles and on mountains,
and cannot be used by living systems when melted. Of the 【B9】 ______
remaining fraction, which is somewhat fewer than 1% of the 【B10】 ______
whole, there is 10-20 times as much stored as underground
water as is actually on the surface. There is also a minor,
but extremely important, fraction of the water supply
which is present as water vapor in the atmosphere.
选项
答案
在let与the之间加alone。
解析
let alone为固定表达,意思是“更不用说”。
转载请注明原文地址:https://tihaiku.com/zcyy/3907780.html
相关试题推荐
[originaltext]Passage1Cambridgeisoneofthemostimportantandbeautifu
[originaltext]Passage1Cambridgeisoneofthemostimportantandbeautifu
Itwasreportedinthepresssometimeagothatafewsecond-andthird-year
Oneofthemostimportantnon-legislativefunctionsoftheU.SCongressis
Intheauthor’sopinion,theprolongationoflifeisequalto[br]Inthesecond
WhichofthefollowingrecordswasthesecondbesttimeoftheyearbyDonovanB
Theword"astounding"inthesecondparagraphisclosestinmeaningto[br]Whic
TheWasteLandby______isregardedbyscholarsthemostimportantpoemofthe
Theauthorwrotethearticlefromthestandpointof[br]Thesecondandthethir
Whatdoesthephrase"takenwithabarrelofsalt"meanatendofthesecondpar
随机试题
Whataretheygoingtodo?[br][originaltext]F:Iwanttotellyoumyproblem,
Butfortheirgeneroushelp,theexperiment______completedsoquickly.A、shouldn’
[originaltext]Forthesecondtimeinonlytwoweeks,alargegroupofpilo
“建筑化”大面积照明艺术,最能避免眩光的是( )。A.发光顶棚 B.嵌入式光
关于胰腺假性囊肿的手术治疗,下列不正确的是A.持续腹痛不能忍受,影响生活或囊肿≥
A.卡介苗 B.麻疹疫苗 C.乙肝疫苗 D.甲肝疫苗 E.脊髓灰质炎疫苗
精益化管理评价问题整改期限,暂不危及运行安全又需停电处理的,应在综合评估的基础上
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
择伐而补植林木类消耗性生物资产发生的后续支出,应计入()。A.管理费用
参与转氨基的维生素是A、维生素B1 B、维生素B6 C、维生素PP D、叶
最新回复
(
0
)