首页
登录
职称英语
How can sharks find their quarries? [br] [originaltext] Scientists say shark
How can sharks find their quarries? [br] [originaltext] Scientists say shark
游客
2023-11-16
48
管理
问题
How can sharks find their quarries? [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 food. 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/3190983.html
相关试题推荐
WhatisNOTmissinginMary’sbriefcase?[br][originaltext]W:Sorry,I’mlate,
Scientistswhobelievecellphonesaredangeroushavebeenthrowingouthypo
Scientistswhobelievecellphonesaredangeroushavebeenthrowingouthypo
Scientistswhobelievecellphonesaredangeroushavebeenthrowingouthypo
Scientistswhobelievecellphonesaredangeroushavebeenthrowingouthypo
Scientistswhobelievecellphonesaredangeroushavebeenthrowingouthypo
Scientistswhobelievecellphonesaredangeroushavebeenthrowingouthypo
Scientistswhobelievecellphonesaredangeroushavebeenthrowingouthypo
Scientistswhobelievecellphonesaredangeroushavebeenthrowingouthypo
Scientistswhobelievecellphonesaredangeroushavebeenthrowingouthypo
随机试题
Increasingly,overthepasttenyears,people—especiallyyoungpeople—haveb
Completethenotesbelow.UseNOMORETHANTHREEWORDSORANUMBERfore
Someconsumerresearchersdistinguish【C1】______"rational"motivesand"emot
L此处需填入动词原形,与possess并列。由前面的possesscertaincharacteristics(具备某些性格特征),可推知此处大意是“表现出
A、24hoursaday.B、11:00p.m.C、6:30a.m.D、9:00a.m.C涉及到时间的问题需要对文中出现的时间数字做出敏锐
居住区内不同管线至乔灌木中心的水平净距各不同,下列哪种管线的净距要求最小:(
肥厚型心肌病诊断?
属β受体阻滞剂的药物是A.氯沙坦 B.哌唑嗪 C.苄胺唑啉 D.巯甲丙脯酸
由于分包单位不服从施工总承包单位的安全生产管理而导致发生生产安全事故时,分包单位
下列关于绿色信贷,说法错误的是(??)。A.银行业金融机构需要明确绿色信贷的支持
最新回复
(
0
)