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  3. A mother dolphin(海豚) chats with her baby over the telephone! They were in separate tanks connected by a special underwater audio

A mother dolphin(海豚) chats with her baby over the telephone! They were in separate tanks connected by a special underwater audio

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问题     A mother dolphin(海豚) chats with her baby over the telephone! They were in separate tanks connected by a special underwater audio link. "It seemed clear that they knew who they were talking with", says Don White, whose Project Delphis ran the experiment. But what were they saying?
    Scientists think dolphins "talk" about everything from basic facts like their age to their emotional state. "I speculate that they say things like ’there are some good fish over here,’ or ’watch out for that shark because he’s hunting,’" says Denis Herzing, who studies dolphins in the Bahamas.
    Deciphering(译解) "dolphin speak" is also tricky because their language is so dependent on what they’re doing, whether they’re playing, fighting, or going after tasty fish. During fights, for example, dolphins clap(碰撞) their jaws to say "Back off!" But their jaws clap while playing, too, as if to show who’s king of the underwater playground.
选项 A、Two connected tanks were separated for the talk.
B、A clear voice could be heard in the two separate tanks.
C、Both the mother dolphin and the baby knew each other.
D、A special underwater audio link was set up for the talk.
答案D
解析 本题的依据句为文章的第一句和第二句话"A mother dolphin(海豚)chats with her baby over the telephone! They were in separate tanks connected by a special underwater audio link"．只需选择与依据句相同用词和意思的选项，就能确定D选项为正确答案。
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