首页
登录
职称英语
[originaltext] Scientists say sharks have lived in the world’s oceans for mi
[originaltext] Scientists say sharks have lived in the world’s oceans for mi
游客
2023-09-14
45
管理
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、By good sense of water waves made by quarries.
B、By good sense of smell and electrical and magnetic power.
C、By good sense of light.
D、By good sense of blood.
答案
B
解析
相关句子:“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.”可以看出鲨鱼靠敏锐的嗅觉和电磁感觉来捕食猎物。
转载请注明原文地址:https://tihaiku.com/zcyy/3014223.html
相关试题推荐
[originaltext]Livingthingstakefromtheirenvironmentandgivebacktoth
[originaltext]Whatisthebestwaytolearnalanguage?Weshouldremember
[originaltext]Readingtooneselfisamodemactivitywhichwasalmostunkno
[originaltext]Readingtooneselfisamodemactivitywhichwasalmostunkno
[originaltext]Scientistsclaimthatairpollutioncausesadeclineinthew
[originaltext]Scientistsclaimthatairpollutioncausesadeclineinthew
[originaltext]Scientistsclaimthatairpollutioncausesadeclineinthew
[originaltext]M:Helloandwelcometotoday’sshow,Shirley’sGarden.Today,we
[originaltext]M:Helloandwelcometotoday’sshow,Shirley’sGarden.Today,we
[originaltext]M:Helloandwelcometotoday’sshow,Shirley’sGarden.Today,we
随机试题
Someplantsare____todiseaseandmustbetakengoodcareofforthewholegrowi
Cellscannotremainaliveoutsidecertainlimitsoftemperatureandmuchna
WriteNOMORETHANTHREEWORDSforeachanswer.WhatTHREEitemsofclothingdoe
非ST段抬高性心肌梗死患者进行危险分层首选的心脏标志物是A.cTn B.Mb
在工程网络计划中,工作M最早开始时间为第16天,其持续时间为5天。该工作有三项紧
监事会是我国商业银行内设的监督部门,下列不是监事会的职责的是()。A.外部监督
证券研究报告的基本要素包括()。 Ⅰ.宏观经济、行业或上市公司的基本面分析
2016年,广东各区域按社会消费品零售总额与地区生产总值的比值由大到小排列,
劳动定额的内容包括()。A.工时定额 B.定员定额 C.设备看管定额
某房地产开发企业注册地在甲市,2020年5月对其在乙市开发的一房地产项目进
最新回复
(
0
)