首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、It provides us with 70% of the land surface. B、It provides us with food. C、It provides us with drinking water directly. D、It p
A、It provides us with 70% of the land surface. B、It provides us with food. C、It provides us with drinking water directly. D、It p
admin
2019-04-23
47
问题
The earth’s oceans are huge, so much bigger than the land area that they cover 70% of the surface of the earth. Throughout history humans have been directly or indirectly influenced by the oceans. (4) Ocean waters serve as a source of foods and valuable minerals. Increasingly, people are turning to the oceans for their food supply either by direct consumption or indirectly by harvesting fish. Besides, oceans are a major element 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. 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 seawater that it is not fit for human use. Scientists have been trying to find ways to turn this salty water into fresh water. (5) Machines for the transformation of water are already at work in certain parts of the world, but their cost is still much too high. Scientists will have to find much cheaper ways to do the job. It is possible that there is plentiful food in the ocean. In addition to the hundreds of varieties of fish, some kind of seaweed can be eaten. (6) It is beneficial 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 awful taste.
4. What can the ocean supply us with?
5. What do we know about the transformation of seawater into fresh water?
6. What is the disadvantage of seaweed as food?
选项
A、It provides us with 70% of the land surface.
B、It provides us with food.
C、It provides us with drinking water directly.
D、It provides us with mineral water.
答案
B
解析
事实细节题。抓住关键句“Ocean waters serve as a source of food and valuable minerals.”可知海洋能给人类提供食物和矿物质,而不是矿物质水 (mineral water),故答案为 B。
转载请注明原文地址:https://kaotiyun.com/show/CFZ7777K
0
大学英语四级
相关试题推荐
OnFoodSafety,aLongListbutLittleMoneyA)Thissummertherehasbeenadrumbeatoffood-relatedillnesses.Strawberries
A、Manychildrensuffergreatlyfrombraininjury.B、Manychildrenarethreatenedbylungcancer.C、Childrensuffermorefrombra
Ifyousitalldayatanofficeandworryaboutitseffectonyourweightandhealth,takeafewbreaks.That’stheadvicef
A、Theyworkhardatnoon.B、Theyfeeltoohottosleep.C、Theirworkisdifficult.D、Theytakenapsatnoon.D短文提到,“在世界许多地方,人们有午
Itwasoncethoughtthatairpollutionaffectedonlytheareaimmediatelyaroundlargecitieswithfactoriesandheavyautomobil
河边有一所老房子。
Backintheday,agoodreportcardearnedyouaparentalpatontheback,butnowitcouldbemoneyinyourpocket.Experiments
Backintheday,agoodreportcardearnedyouaparentalpatontheback,butnowitcouldbemoneyinyourpocket.Experiments
AnimalsontheMoveA)Itlookedlikeascenefrom"Jaws"butwithoutthedramaticmusic.Ahugesharkwaslowlyswimmingthro
A、Theyproducethesameyieldindifferentlocations.B、TheyaresuitabletogrowonlyintheUnitedStates.C、Theyproducebett
随机试题
下列不属于肺与肾之间关系的是
用热远热,用寒远寒是指
幽门梗阻时
八大山人是_______在绘画作品上常用的名号。
贝多芬一生创作了九部交响曲,因作品内涵深刻、技艺精湛,被世人誉为“_________”。
审查政府的法规、命令和决定的监督是()。
(2014下集管)(2010上项管)依照EIA/TIA568A标准的规定,完整的综合布线系统包括______。①建筑群子系统;②设备间子系统;⑨垂直干线子系统;④管理子系统;⑤水平子系统;⑥工作区子系统
Whowilllook______thebabywhilewe’reout?
A、Shehasfewshortcomings.B、Herfranknesssometimesoffendsothers.C、Sheisachampionoftheunderdog.D、Shetendstobean
天安门广场(TiananmenSquare)位于北京市中心,是世界上最大的广场。整个广场东西宽500米,南北长880米,总面积达44万平方米。矗立在广场中央的人民英雄纪念碑(MonumenttothePeople’sHeroes)是新中国诞生后在
最新回复
(
0
)