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2016英语专四阅读练习(16)
2016英语专四阅读理解要求考生掌握对一定难度新闻、文学等题材文章的阅读能力,从阅读速度和技巧,理解、判断和推理能力上都有更高要求,这就需要考生平时强加训练,新东方在线专四频道分享2016英语专四阅读练习,大家在冲刺阶段更是要多加练习,争取顺利通过专四考试。
Certainly no creature in the sea is odder than thecommon sea cucumber. All living creatures,especially human beings, have their peculiarities,but everything about the little sea cucumber seemsunusual. What else can be said about a bizarreanimal that, among other eccentricities, eatsmud, feeds almost continuously day and night butcan live without eating for long periods, and can bepoisonous but is considered supremely edible by gourmets?
For some fifty million years, despite all its eccentricities, the sea cucumber has subsisted onits diet of mud. It is adaptable enough to live attached to rocks by its tube feet, under rocksin shallow water, or on the surface of mud flats. Common in cool water on both Atlantic andPacific shores, it has the ability to suck up mud or sand and digest whatever nutrients arepresent.
Sea cucumbers come in a variety of colors, ranging from black to reddish brown to sand colorand nearly white. One form even has vivid purple tentacles. Usually the creatures are cucumbershaped-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 frompredators and ocean currents.
Although they have voracious appetites, eating day and night, sea cucumbers have thecapacity to become quiescent and live at a low metabolic rate-feeding sparingly or not at allfor long periods, so that the marine organisms that provide their food have a chance tomultiply. If it were not for this faculty, they would devour all the food available in a shorttime and would probably starve themselves out of existence.
But the most spectacular thing about the sea cucumber is the way it defends itself. Its majorenemies are fish and crabs, when attacked, it squirts all its internal organs into water. It alsocasts off attached structures such as tentacles. The sea cucumber will eviscerate andregenerate itself if it is attacked or even touched; it will do the same if the surrounding watertemperature is too high or if the water becomes too polluted.
1. 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.
2. The fourth paragraph of the passage primarily discusses______.
A. the reproduction of sea cucumbers
B. the food sources of sea cucumbers
C. the eating habits of sea cucumbers
D. threats to sea cucumbers' existence
3. What can be inferred about the defence mechanisms of the sea cucumber?
A. They are very sensitive to surrounding stimuli.
B. They are almost useless.
C. They require group cooperation.
D. They are similar to those of most sea creatures.
4. Which of the following would NOT cause a sea cucumber to release its internal organs intothe water?
A. A touch B. Food? C. Unusually warm water D. Pollution.
参考答案与解析:
1. B) 通过阅读文章可以排除选项A、C、D,因为文中没有提及,故选项B为正确答案。
2. C) 此题为段落主旨题。通过阅读第四段可知作者都是讲述海参的进食习惯,故选项C为正确答案。
3. A) 此题为推论题。根据最后一段可知海参在受到外界刺激时,会做出一定的反应,这也反映出它的防御机制非常敏感,故A为正确答案。
4. B) 此题为细节题。根据最后一段可知惟有food不会使海参将体内器官吐出来,故其为正确答案。
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