首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
What is this passage mainly about?
What is this passage mainly about?
admin
2013-11-10
68
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 three-hundred-fifty 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 tiger 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、Call on people to protect sharks.
B、Point out the living environment of sharks.
C、Explain why the sharks are dangerous.
D、An introduction to sharks.
答案
D
解析
听遍全文,我们可以得出结论:本文是一篇介绍鲨鱼的科普文章,因此答案是D。
转载请注明原文地址:https://kaotiyun.com/show/LlGK777K
0
专业英语四级
相关试题推荐
Howmanyofthespeakershaveorderedmeat?
TheHomeOfficehasbeenthreatenedwithlegalactionamidclaimsitmadewhichmistakenlyimpliedthat22collegeswereboguso
Duringthewholeofadark,cloudydayneartheendoftheyearIhadbeen【C1】______myhorsealongcountryroadswithlittleli
Scientistssayitmaybefiveortenyears______itispossibletotestthismedicineonhumanpatients.
Lindadidnothavetimetogototheconcertlastnightbecauseshewasbusy______forherexperiment.
WhichofthefollowingworddescribestherelationshipbetweentheIndiansandtheearlysettlers?
Whatarethetwospeakersdoingwhilehavingthisconversation?
Sick______shewas,shehastopreparefoodforthewholefamily.
Whydidthespeakerdropeverythingatthetime?
ItisbecauseofhisplaysthatShakespeareisnowconsideredthegreatestEnglishwriterinhistory.Theerainwhichhelived,
随机试题
12岁男孩,发热伴皮肤出血点2周。查体贫血貌,皮肤散在瘀点,肝脾均为肋下2~3cm,胸骨压痛,血红蛋白65g/L,白细胞15×109/L,血小板13×109/L,不需做的检查是
A.慢性咳嗽、大量脓痰,反复咯血常见于B.咳嗽、咳痰伴喘息持续3个月,连续2年以上常见于C.劳力性呼吸困难伴咳嗽、咯血常见于D.寒战、高热、胸痛、铁锈色痰常见于E.午后低热、盗汗、咳嗽、咳痰、痰中带血常见于肺炎球菌肺炎
邦威尔(Bonwill)等边三角形学说中,三角形的角位于
关于故意犯罪形态的认定,下列哪些选项是正确的?(2013年卷二54题,单选)
下列不能构成索赔原因的是()。
电学实验课上,学生分组做《测绘小灯泡的伏安特性曲线》实验,老师要求学生按大屏幕上的电路图及实验要求(图11)连接电路并进行实验,下面为某小组实验过程的片段。学生:老师,我们合上开关后,无论怎么改变滑动变阻器滑片的位置,电压表和电流表的指针都不偏转。老
《晚钟》的作者是()。
根据我国宪法规定,下列有关审计机关的表述哪一项是错误的?()
Whataretheytalkingabout?
()阳性反应()腹部绞痛()百日咳()声音沙哑
最新回复
(
0
)