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
46
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
We’veBeenImaginingMountainsAllWrong,SayScientistsA)Fromthesimplestsketchestothemostadvancedscientificmodels
OnFoodSafety,aLongListbutLittleMoneyA)Thissummertherehasbeenadrumbeatoffood-relatedillnesses.Strawberries
A、Hecompletedhisbiggestcharityprojectuntilnow.B、HegotamessagefromObamaandlawmakers.C、Heaskedforhelpforthose
WhyYouShouldn’tFreakOutAboutSwarmingHoneybees—andHowtoSaveBeesFromThoseWhoDoA)Formanypeople,thelate-spri
目前,全球变暖是一个热门话题,但是有关全球变暖的各项证据似乎还有些不同的声音。人们现在已经知道,地球的发展经历了很多周期(cycle),尽管在历史上还未出现过像今天这样的时代,即高度工业化(industrialization)产生如此多的污染。全球变暖主要
A、Saveupfortheirfutureeducation.B、Payforsmallpersonalthings.C、Buytheirownshoesandsocks.D、Makedonationswhenne
A、Inafast-foodrestaurant.B、Atashoppingcenter.C、Atacountyfair.D、Inabakery.C题目询问吃馅饼比赛通常在哪里举行。关键是要听到文章开头所说:“县集市是新英格兰
A、Afederalgovernmentagency.B、AcarremovalcenterinLosAngeles.C、Aplacewhereoldcarsarefixed.D、Anagencythattries
A、About1920.B、Around1925.C、Around1930.D、About1935.A短文中提到,1920年,美国用于农业生产的马、骡数量有2500多万,“同时一个竞争者开始大量出现。拖拉机……”意即1920年拖拉机开始大量
Carsandotherroadvehiclesarethesinglemainsourceofharmfulnitrogenoxides.Roadtransportremainsthebiggestsourc
随机试题
四环素类抗生素对哪种病原体无效:
交接于足小趾端两条经脉是()(2007年题153题)
姜片虫病的感染方式主要是
A.GMPB.GAPC.GCPD.GLPE.GSP在药品生产过程实施质量管理,保证生产出符合预定用途和注册要求的药品应遵循()。
施工图设计交底和设计图审查的程序是()。
某拟建工程由甲、乙、丙三个施工过程组成;该工程共划分成四个施工流水段,每个施工过程在各个施工流水段上的流水节拍如下表所示。按相关规范规定,施工过程乙完成后其相应施工段至少要养护2d,才能进入下道工序。为了尽早完工,经过技术攻关,实现施工过程乙在施工过程甲完
下列不属于我国专门法治队伍的是()。
建立合理有效的()是企业完成任务的关键。
关于网络管理功能的描述中,错误的是______。
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience.Andtheyalsoneed
最新回复
(
0
)