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  3. Dolphins Dolphins are social animals./Many of them even enjoy being around humans./In addition to being playful, they are helpfu

Dolphins Dolphins are social animals./Many of them even enjoy being around humans./In addition to being playful, they are helpfu

admin2010-04-24  67
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答案 Dolphins Dolphins are social animals./Many of them even enjoy being around humans./In addition to being playful, they are helpful to men./For example, as early as 400 B.C. ,/the Greek poet Arion was saved from drowning by a dolphin./Even since then, dolphins have been helping swimmers who are in trouble./Swimmers, however, are not the only humans they help./In some parts of the world, they help men catch fish./ Dolphins are very clever./A dolphin’s brain is even larger than a haman brain./Therefore, some people think a dolphin must be smarter than a man./But of course, brain size is not the only measure of cleverness./ Besides, measuring dolphin’s cleverness in other ways is not possible since men cannot talk with them./But we can almost be sure that dolphins can talk with each other./They make different sounds which seem to be at least a form of language.
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