首页
登录
职称英语
What is this passage mainly about? [originaltext] Scientists say sharks have
What is this passage mainly about? [originaltext] Scientists say sharks have
游客
2024-10-21
50
管理
问题
What is this passage mainly about?
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、The necessity of protecting sharks.
B、The living environment of sharks.
C、The dangers of sharks to human beings.
D、An introduction to sharks.
答案
D
解析
原文围绕着鲨鱼(sharks)的生活习性展开,依次说明了它的身体特征,捕食方法,繁殖方式和对疾病的抵抗性等,故D 为答案,而A 和C 与本文无关,B 过于片面。
转载请注明原文地址:https://tihaiku.com/zcyy/3811241.html
相关试题推荐
Themourningperiodstartsfrom______.[br][originaltext]Armenia’spres
Themourningperiodstartsfrom______.[originaltext]Armenia’spresident
Tangledfightingbetweenthethreeracesbrokeout[br][originaltext]Fig
Tangledfightingbetweenthethreeracesbrokeout[originaltext]Fighting
Whywasthespeedlimitfirstreducedto55miles-per-hour?[br][originaltext]
Whywasthespeedlimitfirstreducedto55miles-per-hour?[br][originaltext]
Whywasthespeedlimitfirstreducedto55miles-per-hour?[br][originaltext]
Thepurposeofthemeetingisto______.[br][originaltext]Okay,everybod
WhydoesJohnnylookunhappy?[br][originaltext]F:What’sup,Johnny?Youdon’
HowmanyChineseAmericansarethereintheU.S.today?[br][originaltext]M:P
随机试题
[img]ct_epem_epelisv_00571(20097)[/img][br][originaltext]Ofallthefruits,I
Howmenfirstlearnedtoinventwordsisunknown;inotherwords,theorigin
[originaltext]W:I’mgoingtostartlookingforanotherjob.Ican’tseemys
"Blink"TechnologyA)
关于肺气肿的后果,下述哪一种是错误的()A.肺萎缩 B.肺心病 C.
非毒性甲状腺肿胶质贮积期的主要病变是A.甲状腺不均匀肿大 B.滤泡高度扩张,内
公司在依法向有关主管部门提供的财务会计报告等材料上作虚假记载或者隐瞒重要事实的,
A.导赤散 B.羚角钩藤汤 C.蒿芩清胆汤 D.龙胆泻肝汤 E.甘露消毒
临床上氯丙嗪不用于治疗哪种疾病引起的呕吐A.放射症 B.晕动病 C.癌症
卵巢绒毛膜癌的特点有A.由生殖细胞发生 B.产生HCG C.常合并其他生殖细
最新回复
(
0
)