首页
登录
职称英语
Certainly no creature in the sea is odder than the common sea cucumber. All
Certainly no creature in the sea is odder than the common sea cucumber. All
游客
2024-10-02
16
管理
问题
Certainly no creature in the sea is odder than the common sea cucumber. All living creature, especially human beings, have their peculiarities, but everything about the little sea cucumber seems unusual. What else can be said about 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 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 sand-color and nearly 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 quiescent 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 water. It also casts off attached structures such as tentacles. The sea cucumber will eviscerate and regenerate itself if it is attacked or even touched l it will do the same if the surrounding water temperature is too high or if the water becomes too polluted. [br] According to the passage, why is the shape of sea cucumbers important?
选项
A、h helps them to digest their food.
B、It helps them to protect themselves from danger.
C、It makes it easier for them to move through the mud.
D、It makes them attractive to fish.
答案
B
解析
通过阅读文章可以排除选项A、C、D,因为文中没有提及,故选项B为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3783389.html
相关试题推荐
Certainlynocreatureintheseaisodderthanthecommonseacucumber.All
Certainlynocreatureintheseaisodderthanthecommonseacucumber.All
WhatdidThomasEdison,HenryFordandAlbertEinsteinhaveincommonwhenthey
TheChinesefilmsuperstaroncesaidthathe______rememberedasacommonperso
ThenoisethataffectsseacreaturesconiesfromthefollowingEXCEPT[br][ori
ThenoisethataffectsseacreaturesconiesfromthefollowingEXCEPT[br][ori
ThenoisethataffectsseacreaturesconiesfromthefollowingEXCEPT[originalt
WhatiscommontoallthefilmsproducedinHollywood?[br][originaltext]
WhatiscommontoallthefilmsproducedinHollywood?[originaltext]Hollyw
Theinstinct,commonamongpeopleofallages,forkeepingapparentlyusele
随机试题
Inthepasttwentyyears,therehasbeenanincreasingtendencyforworkerstom
TheworkforwhichThomasMalthusisstillmostwidelyknownishisEssayon
Aftertheseventeenthcentury,themajorityofHarvardgraduatesenteredprofess
BywhatmeansdidJoethinkhecouldbecomerich?[br][originaltext]Joegr
[originaltext]Nothingcanstopyoufromachievingyourgoalsifyouhavet
苯二氮革受体阻断药是A.咪达唑仑 B.氟马西尼 C.地西泮 D.阿托品
患者女性,67岁,慢性肾小球肾炎10年,入院查血肌酐708μmol/L,Hb80
企业给某顾客连续供货,在出厂检验时一致认为应使用计数调整型抽样方案对产品进行验收
甲国公民大卫被乙国某公司雇佣,该公司主营业地在丙国,大卫工作内容为巡回于东亚地区
不是肺脓肿手术指征的是A、急性肺脓肿 B、反复大咯血 C、支气管胸膜瘘 D
最新回复
(
0
)