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
2012-10-23
48
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.
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
文章指出,如果受到攻击,即便是被碰到,海参也会吐出内脏,如果周围的水温过高或受到污染,它也会这样做。最后一段The sea cucumber will eviscerate and regenerate itself if it is attacked oreven touched:it will do the same if the surrounding water temperature is too high or the water be-comes too polluted.
转载请注明原文地址:https://jikaoti.com/ti/yIHYFFFM
0
考博英语
相关试题推荐
Whenwecreditthesuccessfulpeoplewithintelligence,physicalstrengthorgoodluck,wearemakingexcusesforourselvesbeca
ForthepeoplewhohavenevertraveledacrosstheAtlanticthevoyageisafantasy.Butforthepeoplewhocrossitfrequentlyo
ForthepeoplewhohavenevertraveledacrosstheAtlanticthevoyageisafantasy.Butforthepeoplewhocrossitfrequentlyo
ForthepeoplewhohavenevertraveledacrosstheAtlanticthevoyageisafantasy.Butforthepeoplewhocrossitfrequentlyo
ForthepeoplewhohavenevertraveledacrosstheAtlanticthevoyageisafantasy.Butforthepeoplewhocrossitfrequentlyo
Theoppositeofadaptivedivergenceisaninterestingandfairlycommonexpressionofevolution.Whereasrelatedgroupsoforgan
Someweeksago,ridinginacabfromBostontoCambridge,mydriverturnedandaskedmewhatIdidforaliving."TeachEnglish,
Thereisanewtypeofsmalladvertisementbecomingincreasinglycommoninnewspaperclassifiedcolumns.Itissometimesplaced
随机试题
以下药物中,归心、肺、肾经的是
小儿骨髓外造血时,末梢血中可出现
以下属于油溶性抗氧剂的是
关于基金份额分拆,下列说法错误的是()。
根据《证券公司风险控制指标管理办法》的规定,下列关于证券公司经营证券自营业务的规模及比例控制,说法正确的有()。I.持有一种权益类证券的成本不得超过净资本的30%Ⅱ.持有一种权益类证券的成本不得超过净资本的100%Ⅲ.
在买卖合同中,下列()属于买受人负有的义务。
绩效指标体系的设计程序包括:①工作分析;②理论验证;③修改调整;④指标调查。正确的排序是()。
根据下列材料回答问题。2006年,全国农村外出从业劳动力中,男性劳动力8434万人,占64%。从年龄构成上看,20岁以下占16.1%;21—30岁占36.5%;31一40岁占29.5%;41—50岁占12.8%;51岁以上占5.1%。从
两个或两个以上的法人合并为一个新法人,是()。
WhenisJim’sbirthday?
最新回复
(
0
)