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
2012-06-10
43
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/HAmK777K
0
专业英语四级
相关试题推荐
Doingyourhomeworkisasurewaytoimproveyourtestscores,andthisisespeciallytrue______itcomestoclassroomtests.
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience.Andtheyalsoneed
WhenshouldthemancheckwithStudentServicestoensurethechangeofregistrationdate?
ThefollowingdetailsarethereactionstothehugeincreasesinoilcompanyprofitsEXCEPT
Russia’soilindustryhasdonethefollowingEXCEPT
AllofthefollowingarecausesofbeingbittenbymosquitoesEXCEPT______.
AidworkersinMozambiquesaytheyareconfidentthat______.
AidworkersinMozambiquesaytheyareconfidentthat______.
WhendoingbusinessintheArabworld,donotbesurprisedifyourmeetingisinterruptedseveraltimesbypeoplewhocomeinto
Withover1.5millionelderlyanddependentadultsnowlivinginnursinghomesthroughoutthecountry,abuseand______hasbeco
随机试题
患者,女,40岁,平素四肢冰凉,腰膝酸冷。因近期暑节贪食寒凉之物,致呕吐泄泻,胸满腹痛,不思饮食。舌淡红苔白腻脉沉。中医辨为脾胃虚寒证。处方理中丸。理中丸的使用注意事项是()
根据我国有关法律规定,在下列哪些情形下仲裁协议无效?()
对于违规的固定资产贷款人,原银监会除对其采取监管措施外,还可根据《银行业监督管理法》相关规定对其进行处罚的情形有()。
在球类活动中,()应以滚接球、抛接球、原地变化拍球和直线运球为主。
下列平原中,由侵蚀作用形成的是()
如果用一个圆来表示词语所指称的对象的集合,那么以下哪项中三个词语之间的关系符合下图?()
新人,指某方面新出现的人物。根据这个定义,下述人物属于“新人”的是( )。
某单位招录了10名新员工,按其应聘成绩排名1到10,并用10个连续的四位自然数依次作为他们的工号。凑巧的是每个人的工号都能被他们的成绩排名整除,问排名第三的员工工号所有数字之和是多少?()
甲将邻居乙未上锁的自行车推进车棚,并以自己的名义缴纳了保管费。甲的此种行为属于()。
A、Becausetheywanttoseeifbiochemicalchangescanincreaseimmunity.B、Becausetheywanttoseethelong-termeffectsofsin
最新回复
(
0
)