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
2025-04-05
35
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 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-colored 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 their 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 the 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: it will do the same if the surrounding water temperature is too high or the water becomes too polluted. [br] Which of the following would NOT cause a sea cucumber to release its internal organs into the water?
选项
A、A touch.
B、Food.
C、Unusually warm water.
D、Pollution.
答案
B
解析
题目问:下列哪项不会引起海参释放其内脏?最后一段The sea cucumber will eviscerate and regenerate itself if it is attacked or even touched:it will do the same if the surrounding water temperature is too high or the water becomes too polluted.通过这句话可知,如果受到攻击,或即便是被碰到,海参会吐出内脏。如果周围的水温过高或受到污染,它也会这样做。据此判断,应选择B。
转载请注明原文地址:https://tihaiku.com/zcyy/4027299.html
相关试题推荐
Certainlypeopledonotseemlessinterestedinsuccessandwhatitcandof
Awonderdrugwas______fromthiscommonherbasacuretorcancer.(2007年中国矿业大学考
Asoneoftheyoungestprofessorsintheuniversity,MissKingiscertainlyont
Thetiesthatbindustogetherincommonactivityareso______thattheycandi
Therepublicationofthepoet’smostrecentworkswillcertainly______hisnatio
Alllivingcreatureshavetoconstantly______variouschangesintheirenvironmen
______alllivingthingshavesomewayofgettingfromheretothere.A、Certainly
______dullhemaybe,heiscertainlyaverysuccessfultopexecutive.A、Although
Itisacommonthemeinmanysciencefictionstoriesthattheworldmayoneday
Lessthan40yearsagointheUnitedStates,itwascommontochangeaone-d
随机试题
Acertificateofdeposit(CD)isissuedbyadepositoryinstitution【56】thatth
In1915EinsteinmadeatriptoGottingentogivesomelecturesattheinvit
Everyonewantstobehealthyandhappy.【C1】______,illnessoraccidentsmay
"MadeinChina"lostitsnoveltylongago.Thelabelhasbecome【C1】______in
()是零基预算的优点。A.剔除无效活动 B.可在时间紧迫条件下快速编制 C.
若二次根式 有意义,则x可取的数为()。A.比1小的数 B.不小于-1的
A解答:正确答案应为A。左边图形中1个小星形相当于2个小圆形,通过换算,左边每格中均为14个小圆形。
在我国历史上,以“中学为体,西体为用”为指导思想,以读经尊孔为教育宗旨,第一次以
属于修建性详细规划编制基本原则的是()。A.坚持多元化的编制主体的原则
(2020年真题)解决国际重复征税的方法有()。A.抵消法 B.低税法
最新回复
(
0
)