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
2024-10-21
23
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/3811244.html
相关试题推荐
Fromthepassageweknowthatpiglets______.[br][originaltext]Pigletsmay
Fromthepassageweknowthatpiglets______.[originaltext]Pigletsmaybeha
Accordingtothewoman,whatgovernstheclotheswewear?[br][originaltext]M:
Whatisthepurposeofthemeeting?[br][originaltext]W:Well,we’reheretod
What’stherelationshipbetweenthetwospeakers?[br][originaltext]W:Welcom
What’stherelationshipbetweenthetwospeakers?[br][originaltext]W:Welcom
Untilwhattimewillthetornadowatchbeineffect?[br][originaltext]We
Untilwhattimewillthetornadowatchbeineffect?[br][originaltext]We
Untilwhattimewillthetornadowatchbeineffect?[originaltext]Weinter
WhatchangeshappenedattheAcademyAwards?[br][originaltext]Thisyear,
随机试题
MoviesarethemostpopularformofentertainmentformillionsofAmericans
[originaltext]Inthepastindustrieshadmorefreedomthantheyhavenow,a
多尿是指每昼夜排出的尿量长期保持在( )A.100mL以下 B.100~
郭某,女,30岁。呕吐反复发作2年。每因饮食不慎即发呕吐,或劳倦之后,困惫乏力,
患者,男,50岁。高血压病史10年,今日剧烈头痛,眩晕,恶心,呕吐。查体:无肢体
磺基水杨酸法测定尿蛋白最大优点是()A.灵敏度高B.无假阳性C.是定性试验确诊
患者女性,29岁,诊断为白血病,行化疗过程中致口腔溃烂需做咽拭子培养。护士为其采
某变电站于2016年9月新投运了一组阀控密封蓄电池组,请问其投运后第一次核对性放
初中生小明因期末考试成绩差被父亲责打,一气之下离家出走。他的父母向社会工作者求助
甲投资公司(以下简称甲公司)与乙国有企业(以下简称乙企业)以甲公司出资金、乙企业
最新回复
(
0
)