首页
登录
职称英语
What is this passage mainly about? [br] [originaltext] Scientists say shark
What is this passage mainly about? [br] [originaltext] Scientists say shark
游客
2023-11-18
66
管理
问题
What is this passage mainly about? [br]
Scientists say sharks have lived in the world’s oceans for millions of years. Scientists say there are more than 350 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 fond. Some sharks will eat just about anything. Many unusual things have been found in the stomachs of some large 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、For their tasty meat.
B、For the principle of their defense system against disease.
C、For their solid skin.
D、For the principle of their birth modes.
答案
B
解析
根据文中提到的“...the shark’s body defense system against disease.”可知答案为B 。
转载请注明原文地址:https://tihaiku.com/zcyy/3196682.html
相关试题推荐
WhatdidtheAmericansdowiththeirresolution?[br][originaltext]TheAm
WhathasNOTbeendecidedinAfghanistan?[br][originaltext]Electionoffi
WhathasNOTbeendecidedinAfghanistan?[originaltext]Electionofficials
Anothertermforidenticaltwinsis______.[br][originaltext]Althoughtw
Anothertermforidenticaltwinsis______.[originaltext]Althoughtwinsha
Whatisthelatestproblemfacingpeoplewhodrivetoschool?[originaltext]
Whatdoesthenewsystemenablefarmerstodo?[br][originaltext]Doyou
Whatdoesthenewsystemenablefarmerstodo?[br][originaltext]Doyou
Whatdoesthenewsystemenablefarmerstodo?[br][originaltext]Doyou
Whatdoesthenewsystemenablefarmerstodo?[originaltext]Doyouknowt
随机试题
To:LeonardEllisFrom:DonnaHayesDate:February9Subject:EgyptianOdyssey
Whenwilltherescueresume?[originaltext]RescueworkersillFrancesayane
CivilservantisnowthehottestwordinChina,andthousandsofpeopleare
装饰放线时,我们通常使用规格为()m卷尺。A.2 B.3 C.15 D.
下列有关物质转运的叙述,此项符合题干要求的是().A.一种氨基酸只能有一种RN
《变电评价管理规定第55分册辅助设施检修策略》:火灾报警控制器无法与门禁等辅助设
下表为2008年我国对日本、俄罗斯两国的出口、进口额(单位:亿美元)及其增长速度
2018年,全国卫生人员总数达1230.0万人,比上年增加55.1万人。从
为全面客观地掌握贫困对象的经济状况,精准确定扶贫对象,某地基层单位成立了6个扶贫
(2016年真题)在工作分析的结果形成阶段,工作分析人员要将获得的信息送交审查确
最新回复
(
0
)