edible seaweed

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• ________________ are plants such as cabbages, potatoes and onions that you can cook and eat. (sausages, pizza, potato chips, Pour, Vegetables, refrigerator, is made from, seaweed, omelet, grated)

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• What is edible in one culture may be considered _____ in another culture and this may cause culture shock.

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• Put these things in the ________________ to keep them fresh. (sausages, pizza, potato chips, Pour, Vegetables, refrigerator, is made from, seaweed, omelet, grated)

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• ________________ some salt on the two plates and arrange them neatly. (sausages, pizza, potato chips, Pour, Vegetables, refrigerator, is made from, seaweed, omelet, grated)

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• It is said that ________________ potatoes can be applied to the skin to treat blemishes. (sausages, pizza, potato chips, Pour, Vegetables, refrigerator, is made from, seaweed, omelet, grated)

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• Crabs usually feed on ________________ in the sea. (sausages, pizza, potato chips, Pour, Vegetables, refrigerator, is made from, seaweed, omelet, grated)

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• The ________________ tastes delicious without any cheese at all.(sausages, pizza, potato chips, Pour, Vegetables, refrigerator, is made from, seaweed, omelet, grated)

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• 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 tubefeet, 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. The passage mainly discusses 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.

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