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. All living creatures, especially human beings, have thei
Certainly no creature in the sea is odder than the common sea cucumber. All living creatures, especially human beings, have thei
admin
2015-06-27
27
问题
Certainly no creature in the sea is odder than the common sea cucumber. All living creatures, especially human beings, have their peculiarities, but everything about the little sea cucumber seems unusual. What else can be said about it is: a bizarre 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 but is considered supremely edible by gourmets.
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 flats.
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 sand-color and white. One form even has vivid purple tentacles. Usually the creatures are cucumber-shaped hence their name and because they are typically rock inhabitants, this shape, combined with flexibility, enables them to squeeze into crevices 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 motionless 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 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 and regenerate itself when 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.
Compared with other sea creatures the sea cucumber is very
选项
A、dangerous.
B、edible.
C、poisonous.
D、bizarre.
答案
D
解析
文中第一段首句中odder显然与该句的common相对;再由该段后面提到的unusual和bizarre等词可知,海参是一种“奇异的,不同寻常的动物”,因此答案为[D]。
转载请注明原文地址:https://kaotiyun.com/show/j2XK777K
0
专业英语四级
相关试题推荐
HowdoestheTelephoneReassuranceServiceofferhelptopeopleinneed?
Accordingtothepassage,anidealmarriagelife______.
StevewantstotraveltoLondonbytraininsteadofbusbecause
HowmanyofficersdoestheHongKongPolicedepartmentroughlyhaveaccordingtothenews?
Whatisthispassagetalkingabout?
Inthelastthirdofthenineteenthcenturyanewhousingformwasquietlybeingdeveloped.In1869theStuyvesant,consideredN
Computershaveaidedinthestudyofhumanitiesforalmostaslongasthemachineshaveexisted.Decadesago,whenthetechnolog
HowAreOurBodiesMade?Thehumanbodyislikeacomplicatedmachinemadeofmanyinterconnectedparts.Atthesmallestsca
OnlyafterIhadknownhimforsometime______toappreciatehisrealworth.
随机试题
张力性气胸致死的主要原因是
在图4-53所示四连杆机构中,杆CA的角速度ω1与杆DB的角速度ω2的关系为()。
根据现行证券公司代办股份转让的规则,不能满足每周5天股份转让条件的公司,股份转让的转让日为每周( )。
银行进行贷款项目评估时,最关心的是借款企业的财务状况和项目的效益情况,通常作为贷款项目评估重点的是()
“说汉话、穿汉服、改汉姓,与汉联姻,学汉礼法”。这些关键词与哪一件事件有关?()
下列成语与所涉及的物理知识,对应关系不正确的是:
Whenwilloverseasstudentsenroll?
AndylivedhighintheRockyMountains.Hehunted(打猎)wildanimalsthere.Healsotookothermenhunting.Thatwashiswork.
DothefollowingstatementsagreewiththeinformationgiveninReadingpassage?Inboxesonyouranswersheet,writeTRUE
ThismonthSingaporepassedabillthatwouldgivelegalteethtothemoralobligationtosupportone’sparents.CalledtheMain
最新回复
(
0
)