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
Certainly no creature in the sea is odder than the common sea cucumber(海参). All living creatures, especially human beings, have
Certainly no creature in the sea is odder than the common sea cucumber(海参). All living creatures, especially human beings, have
admin
2009-06-15
68
问题
Certainly no creature in the sea is odder than the common sea cucumber(海参). All living creatures, especially human beings, have their peculiarities, but everything about the little sea cucumber seems unusual. What else can be said about an odd animal that, among other eccentricities, eats mud, feeds almost continuously day and night but can live without eating for long periods, and can be poisonous hut is considered supremely edible by gourmets(美食家) ?
For some fifty million years, despite all its eccentricities, the sea cucumber has subsisted on its diet of mud. It is adaptable enough to live attached to rocks by its tube feet, under rocks in shallow water, or on the surface of mud fiats. Common in cool water on both Atlantic and Pacific shores, it has the ability to suck up .mud or sand and digest whatever nutrients are present.
Sea cucumbers come in a variety of colors, ranging from black to reddish-brown to sandcolor and nearly white. One form even had vivid purple tentacles. Usually the creatures are cucumbers-shaped——hence their name——and because they are typically rock inhabitants, this shape, combined with flexibility, enables them to squeeze into narrow cracks where they are safe from predators and ocean currents.
Although they have voracious appetites, eating day and night, sea cucumbers have the capacity to become inactive and live at a low metabolic rate feeding sparingly or not at all for long periods, so that the marine organisms that provide their food have a chance to multiply. If it were not for this faculty, they would devour all the food available in a short time and would probably starve themselves out’ of existence.
But the most spectacular thing about the sea cucumber is the way it defends itself. Its major enemies are fish and crabs, when attacked, it squirts all its internal organs into the water. It also casts off attached structures such as tentacles. The sea cucumber will eviscerate排除内脏) and regenerate itself if it is attacked or even touched; it will do the same if the surrounding water temperature is too high or if the water becomes too polluted.
选项
A、the reason for the sea cucumber’s name
B、ways to identify the sea cucumber
C、places where the sea cucumber can be found
D、the peculiarities that make the sea cucumber unusual
答案
D
解析
本文的主题句是第一段第一句:毫无疑问,没有哪一种海洋动物能比常见的海参更为奇特的了。文章的其余部分均是围绕这句话而展开的,说明海参的种种奇特之处。
转载请注明原文地址:https://kaotiyun.com/show/NmLd777K
本试题收录于:
职称英语理工类A级题库职称英语分类
0
职称英语理工类A级
职称英语
相关试题推荐
ASpecialClockEverylivingthinghaswhatscientistscallabiologicalclockthatcontrolsbehavior.Thebiologicalclock(5
ASpecialClockEverylivingthinghaswhatscientistscallabiologicalclockthatcontrolsbehavior.Thebiologicalclock__
AWondersMadebyOurSickbutCharmingLittleGirlBHelpingaDoctortoSucceedCHeartsSaddenedbyaRareDisorderofOur
WhichofthefollowingstatementswouldBowlbysupport?Itissuggestedthatmodemsocietiesdifferfromtraditionalsocieties
A.ColorfulLifeonCampusB.IntelligentStudentBodyC.ExcellentAdministrationD.DistinguishedFacultyE.SubstantialFinancial
Thenewlydevelopedskintestsmaybeusedinthefuturetoallowdoctorsto______.WhatistherelationshipbetweenAlzheimer
Thenewlydevelopedskintestsmaybeusedinthefuturetoallowdoctorsto______.Whichofthefollowingstatementsaboutth
RetirementBringsMostaBigHealthBoostTheself-reportedhealthofthenewlyretiredimprovessomuchthatmostfeeleig
DreamsEveryonecandream.Indeed,everyonedoesdream.Thosewho【C1】______thattheyneverdreamatallactuallydream【C2】__
Jackpackedupallthethingshehadaccumulatedoverthe(last)tenyears.
随机试题
A.水杨酸类B.苯胺类C.乙酸类D.芳基丙酸类E.吡唑酮类对乙酰氨基酚
在Excel2010中可以创建嵌入式图表,它和创建图表的数据源放置在________工作表中。
按TNM分期法,第一期乳腺癌应为T1~T2,N0,M0。()
组成中无川芎的方是
A.疏风止痛B.祛风化痰止痉C.祛风清热,养血活血D.疏风养血,清热除湿E.祛风除湿,化痰通络,活血止痛
工程分析时,当建设项目的规划、可行性研究和设计等技术文件中记载的资料、数据等能够满足工程分析的需要和精度要求时,()引用。
报关企业注册登记许可应当具备的条件包括______。
增长型行业的运动状态一般与经济周期相关。()
Sheaskedthatshe______allowedtoseehersoninpolicecustody.
【S1】【S8】
最新回复
(
0
)