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
2013-08-28
81
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 frequently. But these fish perform a【C2】______service for earth’s waters and for human beings. Yet business and sport fishing are threatening their【C3】______Some sharks are at risk of disappearing from【C4】______.
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. That is 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 plants that live in the ocean.
Medical researchers want to learn more about the shark’s body defense and immune【C12】______against disease. Researchers know that sharks【C13】______quickly from injuries. They study 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.
Their hunting 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.
【C12】
选项
A、systems
B、processes
C、ideas
D、circles
答案
A
解析
从上下文判断,医学研究人员想要更多了解鲨鱼的身体抗病system(系统)。idea:思想;work:工作;circle:周期。
转载请注明原文地址:https://www.kaotiyun.com/show/GZLd777K
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
Below600feetoceanwatersrangefromdimlylittocompletelydark.
America’semphasisontheimportanceofeducationforeveryonehasspurredscientificresearch.
Whenvisitingmuseumsnowadays,peoplecantakepartinmanyactivities.Peoplecanaffordtogotthemodernmuseumssincethey
Whenvisitingmuseumsnowadays,peoplecantakepartinmanyactivities.NewYork’sAmericanMuseumofNaturalHistoryisopene
SomeSundaynewspapersmaybelongtothesamepublishingcompanybutarenoteditedbythesamegroupofpeople.TheObserverc
Youdon’tneedtocarrylargeamountsofcash;actuallyallfinancialbusinesswillbeconductedbycomputers.
Afterherdeath,herpapers--includingunpublishedarticlesandcorrespondenceweredepositedatthelibrary.
ManandComputerWhatmakespeopledifferentfromcomputerprograms?Whatisthemissingelementthatourtheoriesdon’tyet(51)
ManandComputerWhatmakespeopledifferentfromcomputerprograms?Whatisthemissingelementthatourtheoriesdon’tyet(51)
LookingtotheFutureWhenamagazineforhigh-schoolstudentsaskeditsreaderswhatlifewouldbelikeintwentyyears,t
随机试题
[*]
A.虹膜B.脉络膜C.巩膜D.角膜E.睫状体构成眼球壁血管膜后部的是()
16岁男性患者,临床诊断为急性肾炎,则下列哪项表现是该患者必有的
下列哪种疾病外周血涂片不会出现幼稚细胞
调节尿素合成的酶有
可行性研究中风险对策研究的作用不包括()。
人们的金融产品选择依赖的( )有心理上的,如动机、感觉、风险承受能力、对新产品的态度等。
在内部评级法下,表内净额结算的风险缓释作用体现为()的下降。
银行业从业人员邀请客户或应客户邀请进行娱乐活动或提供交通工具、旅游等其他方面的便利时应当遵循以下()原则。
AdviceforStudents:HowtoTalktoProfessorsI.IntroductionA.Professors:normalpeople,justlikeeveryoneelseB.Students
最新回复
(
0
)