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
10
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] According to the passage, why is the shape of sea cucumbers important?
选项
A、It helps them to digest their food.
B、It helps them to protect themselves from danger.
C、It makes it easier for them to move through the mud.
D、It makes them attractive to fish.
答案
B
解析
由题干关键词shape,定位于文中第四段第三句“…这种外形和柔韧性使海参可以挤进岩缝以躲避掠食者和洋流”,由此可知答案为[B]。
转载请注明原文地址:https://tihaiku.com/zcyy/3157655.html
相关试题推荐
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
Nowcustomhasnotbeencommonlyregardedasasubjectofanygreatimportan
随机试题
[originaltext]Anewstudyshowshowourbestfriendmightbeevenmorehuma
( )是施工过程中生产出来的产品结果。A.工程工期 B.工程质量 C.工程
图示悬臂梁和简支梁长度相同,关于两梁的Q图和M图有下述哪种关系? A.Q图和M
患者,男性,36岁,胸腔手术后胸膜腔闭式引流管不慎自胸壁伤口脱出,首要的措施是A
治疗食积证应选用的方剂是A健脾丸 B枳实消痞丸 C保和丸 D桂枝茯苓丸
进行横向界面的管理时,为了最大限度地减少或消除横向联系中的摩擦损耗,应该采取(
迄今为止,()仍然是银行最重要的营销渠道。A.合作机构营销 B.网点机构
保险产品的功能包括(??)。A.风险转移 B.分摊损失 C.补偿损失 D.
寒凉性对人体的不良作用是A.助火 B.耗气 C.伤阳 D.敛阴 E.伤津
新生儿血容量占体重的百分数为A.20% B.12% C.10% D.4%
最新回复
(
0
)