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
2024-09-24
47
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] The passage mainly discusses
选项
A、the reason for the sea cucumber’s name.
B、what makes the sea cucumber unusual.
C、how to identify the sea cucumber.
D、places where the sea cucumber can be.
答案
B
解析
文章第一段第一句指出,海参是海洋中最奇特的生物,随后从各段的首句可以看出,作者从其食物种类、外形、生活习性及防卫方式等方面证明了这一点,由此可知答案为[B]。而其他三个选项都过于片面,不能概括全文的中心思想。
转载请注明原文地址:https://tihaiku.com/zcyy/3772227.html
相关试题推荐
Certainlynocreatureintheseaisodderthanthecommonseacucumber.All
Certainlynocreatureintheseaisodderthanthecommonseacucumber.All
Certainlynocreatureintheseaisodderthanthecommonseacucumber.All
Certainlynocreatureintheseaisodderthanthecommonseacucumber.All
Commoncoldisaviralinfectionthatstartsintheupperrespiratorytract,
Commoncoldisaviralinfectionthatstartsintheupperrespiratorytract,
Commoncoldisaviralinfectionthatstartsintheupperrespiratorytract,
Acommonassumptionabouttheprivatesectorofeducationisthatitcaters
Acommonassumptionabouttheprivatesectorofeducationisthatitcaters
Acommonassumptionabouttheprivatesectorofeducationisthatitcaters
随机试题
Youwillhearoneoftheongoingseriesofinterviewswithaninfluentialex
Whydomostparentsfeelembarrassedwhentheirchildrengraduatefromhighscho
Istestanxietydestructive?Canwemaketestanxietyworkforus?Theanswe
PassageOne[br]Whatdoestheauthormeanbysaying"mostespeciallythela
【C1】[br]【C2】A、signalsB、commercialsC、signsD、brandsD语义衔接题。此次运动是为了调查哪些品牌食物的包装
根据《国务院关于投资体制改革的决定》,对于采用直接投资和资本金注入方式的政府投资
肺炎患儿因缺氧,予鼻导管给氧,氧流量和氧浓度的选择是A:氧流量0.5~1L/mi
社区民警小王积极推行十户联防和邻里守望机制,力促社区和谐。在春节来临之际,小王组
下列对信托基本特征的表述,说法正确的有()。A.信托以信任为基础,受托人应
监理单位采用平行检测复核疏浚工程质量时,不应少于施工检测点数()。A.3%
最新回复
(
0
)