首页
登录
职称英语
[originaltext] The earth’s oceans are colossal, so much bigger than the land
[originaltext] The earth’s oceans are colossal, so much bigger than the land
游客
2023-09-03
52
管理
问题
The earth’s oceans are colossal, so much bigger than the land area that they cover 70% of the surface of the earth. They give us food and materials and a major constituent in the formation of our weather. The extremes of temperature on the earth would be much greater, and many places would be too hot or too cold for humans without the oceans to act as the earth’s thermostat.
As our supply of fresh water becomes more and more scarce, we have naturally looked to the oceans, the greatest source of water on earth. But there is so much salt in sea water that it is not fit for human consumption. Scientists have been trying to find ways to turn this salt water into fresh water. Machines for the conversion of water are already at work in certain parts of the world, but their cost is still exorbitant. Science will have to find much cheaper ways to do the job.
Possibilities for food abound in the ocean. In addition to the hundreds of varieties of fish, some kinds of seaweed can be eaten. It is nutritious enough, containing many proteins, vitamins, and minerals that humans need for survival, but so far no one has been able to figure out how to disguise its awful taste.
选项
A、70% of the land surface.
B、Food.
C、Drinking water directly.
D、Mineral water.
答案
B
解析
Which of the following things can the ocean supply us with?
转载请注明原文地址:https://tihaiku.com/zcyy/2982456.html
相关试题推荐
[originaltext]RussellFazio,anOhioStatepsychologyprofessor,whohasst
[originaltext]RussellFazio,anOhioStatepsychologyprofessor,whohasst
[originaltext]BernardJacksonisafreemantoday,buthehasmanybitterm
[originaltext]BernardJacksonisafreemantoday,buthehasmanybitterm
[originaltext]BernardJacksonisafreemantoday,buthehasmanybitterm
[originaltext]W:Thisweek’sprogramUpYourStreettakesyoutoHarrogate,as
[originaltext]W:DidyouhearthatAnnaneedstostayinbedfor4weeks?M:Ye
[originaltext]W:DidyouhearthatAnnaneedstostayinbedfor4weeks?M:Ye
[originaltext]W:DidyouhearthatAnnaneedstostayinbedfor4weeks?M:Ye
[originaltext]Blamingcreditcardsforyoungadults’moneyabuseispopular
随机试题
Normallyastudentmustattendacertainnumberofcoursesinordertogradu
Kidnappingsaroundtheworldhavetypicallyhadoneoftwomajorgoals:publi
WereIinyourplace,______(我会毫不犹豫地抓住机会).Iwould/shouldseizetheopportunityw
RenewableEnergy[A]Inthepastcentury,ithasbeenseenthattheconsu
女性,47岁,放置宫内节育器8年,因不规则阴道出血半年就诊。查宫颈光滑,宫颈防癌
已知某企业销售收款政策为:当月收现50%,下月收现30%,再下月收现20%。若该
油浸风冷变压器当冷却系统部分故障停风扇后,顶层油温不超过()℃时,允许带额
教师综合素质最突出的外在表现是(),它也是评价教师专业性的核心因素。A.专业动机
某厂房采用水喷雾灭火系统保护,下列不属于水喷雾灭火系统灭火机理的是()。A.窒
仪表电源设备的带电部分与金属外壳之间的绝缘电阻,当采用500V兆欧表测量时,不应
最新回复
(
0
)