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
38
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
Today,California’spublicschoolsareadisaster.【C1】______bydysfunctiona
MajorsandDegreesNationalUniversityawardsassociatedegreesandbach
[originaltext]W:Howareyougettingon,White?AreyoustillworkingfortheM
SearchingtheWebwithYahoo!Yahoo!,liketheWebitself
以下关于RIPV2的说法,错误的是()。A.使用组播而不是广播来传播路由更新
以追求低运价为主要目标的消费者购买行为属于()。A.习惯型 B.理智型
普鲁卡因不用作表面麻醉的主要原因是A.起效慢 B.穿透力弱 C.麻醉强度大
A.能 B.不能 C.处于临界状态 D.P与Q的值比较小时能保持静止,否则
甲公司为增值税一般纳税人,2021年3月1日销售A商品200件并开具增值税专用发
海水环境施工中,对钢管桩采用涂层保护措施,涂层应伸入桩帽(或横梁)混凝土内(
最新回复
(
0
)