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、Call on people to protect sharks. B、Point out the living environment of sharks. C、Explain why the sharks are dangerous. D、An i
A、Call on people to protect sharks. B、Point out the living environment of sharks. C、Explain why the sharks are dangerous. D、An i
admin
2010-08-21
56
问题
Scientists say sharks have lived in the world’s oceans for millions of years. Scientists say there are more than three- hundred –fifty different kinds of sharks.
Sharks do not have bones, and a shark has an extremely good sense of smell. It can find small amounts of substances in the water, such as blood, body liquids and chemicals produced by animals. Sharks also sense electrical and magnetic power linked to nerves and muscles of living animals. These powerful senses help them find their food. Some sharks will eat just about anything. Many unusual things have been found in the stomachs of some tiger sharks. They include shoes, dogs, a cow’s foot and metal protective clothing.
About forty percent of the different kinds of sharks lay eggs. The others give birth to live young. Some sharks carry their young inside their bodies like humans do.
Scientists are beginning to understand the importance of sharks to humans. Medical researchers want to learn more about the shark’s body defense system against disease. They know that sharks recover quickly from injuries. Sharks appear never to suffer infections, cancer or heart diseases.
选项
A、Call on people to protect sharks.
B、Point out the living environment of sharks.
C、Explain why the sharks are dangerous.
D、An introduction to sharks.
答案
D
解析
本文是围绕着鲨鱼的生活习性展开。A,C与本文无关,B只指出了一方面。
转载请注明原文地址:https://kaotiyun.com/show/Dg7K777K
0
大学英语六级
相关试题推荐
Tobesuccessfulinajobinterview,youshould【B1】______certainandprofessional【B2】______.Youneedtocreateagood【B3】___
A、Sheisafraidhemaydiscoverherignorance.B、Sheisafraiditmayaffecthergrade.C、Sheisnotcompletelysureofherown
A、Thethreatofpoisonousdesertanimalsandplants.B、Theexhaustionofenergyresources.C、Thedestructionofoilwells.D、The
AncientOlympicGamesAmateurathletesfromallovertheworldtakepartinthemodemOlympicGames.Anynationmayentera
Asuperstar【B1】______issomeonewhohasbecomefamousinsports,orfilms,orpopularmusic,someonelikeMichaelJackson.Int
PresidentClintonlatertodayjoins【B1】______presidentFord,CarterandBushat"thepresident’ssummitforAmerica’sfuture"【B
A、Venusistoohot.B、Thereisnowaterthere.C、Thereisnooil.D、Itislackingincarbondioxide.A该题问“根据卡尔教授的说法,金星的大气存在什么问题?
Untilabout30yearsago,languageresearchersfocusedtheirstudiesoninfantswhohadalreadybeguntobabble,accordingtoJu
ExteriorPaintingGettingStartedPaintingtheexteriorofyourhouseisahugejob.Buttherewardsaregreattoo.Witham
A、Reducedperspiration.B、Reducedheartrate.C、Reducedstress.D、Improvedimmunity.C
随机试题
原位癌的特点是
大卫是美国公民,2005年在中国旅行期间认识孟某,二人在美国结婚,并一直生活在美国。2009年大卫和孟某在中国法院提起离婚诉讼。根据我国《涉外民事关系法律适用法》的有关规定,他们结婚手续、结婚条件以及离婚分别适用哪国法律?()
货主或者其代理人应当在动植物、动植物产品和其他检疫物进境前或者进境时持输出国家或者地区的( ),向进境口岸出入境检验检疫机关报检。
一家美国公司有一笔应付账款必须在6个月后付给一家日本公司,同时还有一笔应收账款也要在6个月后由另外一家日本公司支付。这家美国公司在以下哪种情况下不会存在交易风险?
下列可作为投资性房地产的项目有()。
二审法院根据当事人上诉和案件审理情况,对上诉案件作出相应裁判。下列各项中,符合法律规定的有()。
房地产广告预算中的其他费用是指与广告活动有关的公共活动经费、管理费等费用,占广告费用总额的()左右。
根据企业破产法律制度的规定,下列债务中,在清偿破产费用和共益债务后,应从破产财产中按第一顺位获得清偿的是()。
一个关系数据库文件中的各个元组()。
Accordingtoasurvey,whichwasbasedontheresponsesofover188,000students,today’straditional-agecollegefreshmenare"
最新回复
(
0
)