根据以下资料，回答题： Certainly -考呗网题库移动版

单选题根据以下资料，回答题：
        Certainly no creature in the sea is odder than the common sea cucumber．All living creature，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 color and nearly white．One form even has vivid purple tentacles．Usually the creatures are cucumber shaped—-hence their name-一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 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 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 if the water becomes too polluted．

According to the passage，why is the shape of sea cucumbers important?

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．

参考答案B

解析:首段简单概括了海参的特别之处。
第二段介绍了海参以泥土为食的特点。
第三段提到海参的颜色和形状。
第四段介绍了海参进食的特别之处——既可以不分白天黑夜一直进食，也可以很长时间不进食。
最后一段指出海参最特别的地方在于它的自卫系统。
B。本题的出题点在因果关系句式处(because…)。根据题干信息词the shape of sea cucumbers定位到原文第三段末句。该句提到，通常这种生物是黄瓜状的，也因此而得名，因为它们生活在岩石上，它的这种形状加上它们的灵活性，使得它们能挤进裂缝里，躲避食肉动物和洋流，由此可以推断海参的形状可以帮助它们保护自己免受危险，故选B，选项中的help与原文的enable属于同义转换。

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单选题 The words“ this faculty”(Line 3，Para．4)refers to the sea cucumbers ability to__________．

A．squeeze into crevices
B．devour all available food in a short time
C．suck up mud or sand
D．1ive at a low metabolic rate

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单选题 The 4th paragraph of the passage primarily discusses__________．

A．the reproduction of sea cucumbers
B．the food sources of sea cucumbers
C．the eating h曲its of sea cucumbers
D．threats to sea cucumbers’ existence

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单选题 Compared with other sea creatures the sea cucumber is very__________．

A．sensitive
B．intelligent
C．aggressive
D．fat

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