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
2013-02-05
40
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.
(14[B]) 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. (15[C]) Some sharks carry their young inside their bodies like humans do.
Scientists are beginning to understand the importance of sharks to humans. (16[B]) 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
推理题。文章中说:医学研究者们希望更多地得知鲨鱼机体抗病系统的原理。可以看出人类渴望通过研究鲨鱼的抗病机理以期对人类有帮助,因此选项B 是正确的。
转载请注明原文地址:https://kaotiyun.com/show/0rhK777K
0
专业英语四级
相关试题推荐
Mr.Schaeublesaysheandotherpartymembersbearsomeresponsibilitiesforthepartyfundingscandalbecause______.
Accordingtothepassage,intensenoisepollutionmayNOTcause
Itisappropriateonananniversaryofthefoundingofauniversitytoremindourselvesofitspurposes.Itisequallyappropria
UnlikethecarefullyweighedandplannedcompositionsofDante,Goethe’swritingshavealwaysthesenseofimmediacyandenthusi
Inthepasttwentyyears,therehasbeenanincreasingtendencyforworkerstomovefromonecountrytoanother.【C1】______somen
Whatdoyoulookforinapotentialdate?Sincerity?Goodlooks?Character?Conversationalability?Askedto【C1】______suchquali
Accordingtothepassage,mothersin______spendmoretimelookingafterchildren.
Whendidthefirstawardceremonytakeplace?
Whendidthefirstawardceremonytakeplace?
______moreimportant,notonlythelostcitieswererecovered,butthenewcitieswerebuilt.
随机试题
结肠破裂修补术后5d,病人血钠136.0mmol/L,血钾6.8mmol/L,血pH7.3,近24h尿量520ml,应诊断为
影响肺部给药的生理因素有()。
[2010年,第107题]某公司拟向银行贷款100万元,贷款期为3年,甲银行的贷款利率为5%(按季计息),乙银行的贷款利率为7%,该公司向哪家银行贷款付出的利息较少?()。
下列属于项目融资实施程序的有()。
根据《碾压式土石坝施工规范》DL/T5129—2001,土石坝防渗体部位的坝基、岸坡岩面开挖,可采用()爆破。
一票货物沿海运输,从上海港运往青岛港,需要承运人签发运输单证。因此,货主可以要求承运人()。
在()上,银行等金融机构之间进行短期的资金借贷,以调剂资金余缺。
美国著名领导学家伯恩斯认为领导者可以分为交易型领导者和变革型领导者,前者强调领导者的行为是一种交易行为,而变革型领导者常常通过提高下属对特定目标的重要性和价值的认识而激励他们自主创新,以集体利益为主,迈向更高的境界。你认为他是从()角度来理解
结构化分析和设计方法是在分析阶段建立系统的逻辑模型,而在设计阶段建立系统的【】。
对于EDI系统来说,计算机通信网是EDI应用的基础,计算机系统应用是EDI的前提条件,【 】是EDI的关键。
最新回复
(
0
)