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
2023-11-04
37
管理
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. [br] 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://tihaiku.com/zcyy/3157658.html
相关试题推荐
WhatwasAnneSullivanincommonwithHelenKeller?A、Neithercouldtalk.B、Neit
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
随机试题
Youshouldspendabout20minutesonQuestions27-40,whicharebasedonReading
WhichofthefollowingisNOTmentionedbytheauthoramongthingsthatareinhe
Ifyoulooktotheleft,youwillseeariverofgreat(wide)______.width原句空格中应填
BustaMyth,GetaBenefitFewsubjectsharbormore
PreparingChildrentoBeSafeatCollegeA)Moneycanbuymany
某软件项目包含8项活动,活动之间的依赖关系,以及各活动的工作量和所需的资源如下表
“三人联锁爆破制”是爆破工、瓦斯检查工和()3人,以换牌联锁的方式,互相制约和
A.异黄酮B.查耳酮C.二氢黄酮D.黄酮醇E.黄酮H-NMR中C环质子以一个尖锐
增加饮食中纤维的含量,喝大量的水,多做运动可减少的副作用是A、头痛 B、眩晕
A.服用茶碱类平喘药 B.鸡尾酒疗法服用蛋白酶抑制剂 C.茶中的成分 D.
最新回复
(
0
)