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
2024-09-24
8
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/3771719.html
相关试题推荐
Accordingtothenewresearch,feelingbadatwork______.[br][originaltext]
Accordingtothenewresearch,feelingbadatwork______.[br][originaltext]
Accordingtothenewresearch,feelingbadatwork______.[originaltext](14
Accordingtotheauthor,peopletendto______.[br][originaltext]Theways
Accordingtotheauthor,peopletendto______.[br][originaltext]Theways
WhyisthewomanlookingforsomebooksaboutEnglish?[br][originaltext]M:Hi
WhyisthewomanlookingforsomebooksaboutEnglish?[originaltext]M:Hi!What
Whydoesthemanlooksotired?[br][originaltext]W:Howarethethingswithy
Whydoesthemanlooksotired?[originaltext]W:Howarethethingswithyou?M:
Scientistshaveknownhowtoharnessthelimitlesspowerofthesun.Theunderli
随机试题
Thelocalpoliceareauthorizedto______anyone’smovementsastheythinkfit.A、p
企业可以从如下哪些行为提高自己的可持续增长率?()A.回购股份 B.增加留存
曲线y=x3+1在点(1,2)处的切线的斜率为().A.1 B.2 C.3
甲(76周岁)因生活琐事与妻子发生争执,盛怒之下用水果刀将妻子一刀捅死。对于甲的
按照行政层级划分的事业单位中占事业单位总人数的比例最大的是()。A.直接隶属中
患者男,52岁。近1周来反复高热,伴寒战,右上腹疼痛,食欲减低,体重下降。查体:
A.清经散 B.清热调血汤 C.保阴煎 D.丹栀逍遥散 E.清热固经汤治
A.伤寒 B.乙脑 C.流感 D.流脑 E.霍乱首选氧氟沙星治疗的是(
具发表散寒,温中止呕作用的辅料是()A.黄酒 B.米醋 C.盐水 D.炼
关于钢筋绑扎连接(或搭接)的说法,正确的有()。A.受拉钢筋直径大于28mm时,
最新回复
(
0
)