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
Sharks Perform a Service for Earth’s Waters It is hard to get people to think of sharks as anything but a deadly enemy. They
Sharks Perform a Service for Earth’s Waters It is hard to get people to think of sharks as anything but a deadly enemy. They
admin
2015-07-17
55
问题
Sharks Perform a Service for Earth’s Waters
It is hard to get people to think of sharks as anything but a deadly enemy. They are thought to【C1】______ people frequendy. But these fish perform a【C2】______service for earth’s watersand for human beings. Yet business and sport fishing are threatening their【C3】______. Somesharks are at【C4】______of disappearing from earth.
Warm weather may influence both fish and shark activity. Many fish swim near coastal areas【C5】______their warm waters. Experts say sharks may follow the fish into the same areas, 【C6】______people also swim. In fact,most sharks do not purposely charge at or bite humans.They are thought to mistake a person【C7】______a sea animal,such as a seal or sea lion. Thatis why people should not swim in the ocean when the sun goes down or comes up. Those are the【C8】______ when sharks are looking for food. Experts also say that bright colors and shiny jewelry may cause sharks to attack.
A shark has an extremely good sense of smell. It can find small amounts of substances in water,such as blood, body liquids and【C9】______produced by animals.These powerful【C10】______help sharks find their food. Sharks eat fish,any【C11】______ sharks,and plantsthat live in the ocean.
Medical researchers want to learn more about the shark’s body defense and immune systems【C12】______ disease.Researchers know that sharks【C13】______quickly from injuries. Theystudy the shark in hopes of finding a way to fight human disease.
Sharks are important for the world’s【C14】______.They eat injured and diseased fish. Theirhunting activities mean that the numbers of other fish in ocean waters do not become too 【C15】______. This protects the plants and other forms of life that exist in the oceans.
【C14】
选项
A、rivers
B、oceans
C、forests
D、mountions
答案
B
解析
从上下文判断,鲨鱼的存在能使oceans得益。鲨鱼不生活在river,forests或mountains中,所以这三个选项不会是答案。
转载请注明原文地址:https://kaotiyun.com/show/x6Gd777K
本试题收录于:
职称英语理工类A级题库职称英语分类
0
职称英语理工类A级
职称英语
相关试题推荐
ManandComputerWhatmakespeopledifferentfromcomputerprograms?Whatisthemissingelementthatourtheoriesdon’tyet(51)
ManandComputerWhatmakespeopledifferentfromcomputerprograms?Whatisthemissingelementthatourtheoriesdon’tyet(51)
HowtoSeeFriendshipMorethanfortythousandreaderstolduswhattheylookedforinchosefriendships,whattheyexpected(51)
HowtoSeeFriendshipMorethanfortythousandreaderstolduswhattheylookedforinchosefriendships,whattheyexpected(51)
Theyhadafarbetteryieldthananyotherfarmmilesawayaroundthisyear.
Whatcountryhasmorehighest-ratingcompaniesintheworldthananyothercountryhas?BywhatmeansdidJapangrabitslarge
WorldFlightPilotLindaFinchwilltakeoffonMarch17,1997torepeatoneofthemostfamousflightsofalltime—AmeliaEarh
CaribbeanIslandsWhatwouldyouseeifyoutookacruisetotheCaribbeanIslands?Palmtreesandcoconuts(椰子)?Whitebeaches
A.borntobemoreintelligentorlessintelligentB.haveabetterchancetodevelophisintelligenceC.taughttobemoreinte
TheFirstNavigationalLightsIntheNewWorldthefirstnavigationallightswereprobablylanternshungatharborentrances
随机试题
对角膜移植术后的患者,为防治排斥反应,可应用的药物是
侵权行为的构成要件有行为违法、()。
[2007年,第16题]微分方程cosydx+(1+e-x)sinydy=0满足初始条件的特解是()。
炉膛爆炸事故是指炉膛内积存的可燃性混合物瞬间同时爆燃,从而使炉膛烟气侧突然升高,超过了设计允许值而产生的正压爆炸。下列关于炉膛爆炸事故预防方法中,不适用的是()。
事故树分析方法是从事故开始,逐层次向下演绎,将全部出现的事件,用逻辑关系联结起来,其采用的符号主要包括()。
X企业以库存现金300元购买办公用品,会计人员王某在填制记账凭证时借记“管理费用”,贷记“银行存款”,结账时发现填写错误,直接在原记账凭证上划掉银行存款,改为库存现金。()
单位内部会计监督,可通过()在处理会计业务过程中进行。
在有利于基金份额投资增值的前提下,基金管理人可以将其固有财产或者他人财产混同于基金财产从事证券投资。( )
A、Theplanehastakenoff.B、Surelyhewill.C、You’reright.C
A、Attendingearlierclassesoften.B、Havingalaterclassschedule.C、Goingtosleepmuchearlier.D、Aimingatabettercollege.
最新回复
(
0
)