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 tries to categorize the different kinds of sharks throughout the world. B、It tries to warn humans of the dangers posed by s
A、It tries to categorize the different kinds of sharks throughout the world. B、It tries to warn humans of the dangers posed by s
admin
2013-06-02
58
问题
Most people picture sharks as huge, powerful, frightening predators, ready at any moments to use their sharp teeth to attack careless swimmers without provocation. But, people may have some wrong ideas on the conception of sharks.
First, there are 350 species of shark, and not all of them are large. They range in size from the dwarf shark, which can be only 6 inches long and can be held in the palm of the hand, to the whale shark, which can be more than 55 feet long.
Second, the different species of shark vary tremendously in the number and type of teeth. A shark can have from one to seven sets of teeth at the same time, and some types of shark earl have several hundred teeth in each jaw. It is true that the fierce and predatory species do possess extremely sharp and brutal teeth used to rip their prey apart: many other types of shark, however, have teeth more adapted to grabbing and holding than to cutting and slashing.
Finally, not all sharks are predatory animals ready to strike out at humans. In fact, only 12 of the 350 species of shark have been known to attack humans, and a shark needs to be provoked in order to attack. The types of shark that have the worst record with humans are the tiger shark, the bull shark, and the great white shark. However, for most species of shark, even some of the largest types, there are no known instances of attacks on humans.
选项
A、It tries to categorize the different kinds of sharks throughout the world.
B、It tries to warn humans of the dangers posed by sharks.
C、It tries to describe the characteristics of shark teeth.
D、It tries to clear up misconceptions about sharks.
答案
D
解析
What is the main purpose of this passage?
转载请注明原文地址:https://kaotiyun.com/show/bcB7777K
0
大学英语六级
相关试题推荐
A、Chooseakindofjelly.B、Refusethesejellies.C、Choosesomefruits.D、Invitethemantohavedinner.B推理判断题。男士询问女士要不要尝些果冻,自己
A、Allwhalingisbad.B、Commercialwhalingisimmoral.C、Whalingshouldbelimitedonlyforfood.D、TheIWCshouldbereplaced.
A、50minutes.B、30minutes.C、25minutes.D、15minutes.A
A、Adentist.B、Acook.C、Adietician.D、Atwirler.A综合推断题。男士请女士告知哪里疼,女士说她某处特别是在咬热的或冷的东西时疼,可见女士是牙疼,由此推断,男士是牙医,所以A正确。cook(厨师),diet
Whatisyourfavoritecolor?Doyoulikeyellow,orange,andred?Ifyoudo,youmustbeanoptimist,anactivepersonwhoenjoy
A、Theythinkthescreenisamapoftheworld.B、Theyseethescreenlikeapainting.C、Theyseethescreenlikeaphotograph.D
A、Humanbrainsprefermusicalsoundstowhitenoise.B、Childrenofdifferentagesrespondtosoundsatthesamespeed.C、Allthe
Growingup,Iearnedmybestmarksforplayingwellwithothers.Formyhusband,Ilivedinthreedifferentcountriesinfiveye
A、AsmalltowninBritain.B、Anewtypeofjail.C、Alaborcamp.D、AbiggymnasiuminScotland.B细节明示题。文章一开始便说CorntonValeis
A、Liverpool.B、London.C、Scotland.D、Welsh.A选项都是地名。从heisfromLiverpool可以得知A是正确答案。
随机试题
试述组织文化创建的一般原则。
祖母无臣,无以终余年。
男性,35岁,2周前感冒、发热、咳嗽,1周前自愈。近日感胸闷、气短、间断呕吐。体检:心尖区第一心音减弱,Ⅱ~Ⅲ/6级收缩期吹风样杂音,心律整齐,心率100次/分。胸部后前位片正常。血常规白细胞10×109/L,中性粒细胞0.65。血沉25mm/h。CK-M
I/I0所表示的是
闭经最可能的诊断是假设该患者26岁婚后2年未孕,为确诊下列哪项检查是错误的
含有头孢克罗的药品(未配定剂量)()
下列各项中,不通过财务费用核算的是()。
所有者权益变动表是反映构成所有者权益各组成部分当期增减变动情况的报表。()(20l5年)
请为笛福的《鲁滨孙漂流记》一课设计教案。
长期借款筹资与普通股筹资相比,其特点不包括()。
最新回复
(
0
)