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    2．There more? water if people don’t save. 【查看更多】

     

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    　　Can dolphins talk? Maybe they can't talk with words, but they talk with sounds. They show their feelings with __1__.

    　　Dolphins travel in groups. We call a group of fish a“__2__”. They don't study, but they travel together. Dolphins are mammals（哺乳动物）, not fish, but they swim together in a school. Dolphins talk to the other dolphins in the school. They give information. They tell when they are happy or __3__ or afraid. They say“Welcome”when a dolphin comes back to the school. They make __4__ sounds under water. People can't hear these sounds because they are very, very high. Scientists make tapes of the sounds and __5__ them.

    　　Sometimes people catch a dolphin for large aquarium. (An aquarium is a zoo for fish.)People can watch the dolphins in a show. Dolphins don't like to be away from their school in an aquarium. They are sad and __6__. There are many stories about dolphins. They help people. Sometimes they save people's

    __7__. If you fall into the water and can't swim, they may come up to help you. They swim fast and jump very __8__. They can play with a ball. They can stand up and walk on water! They are friendly __9__ people. Dolphins'meat is __10__, but people don't like to kill them. They say that dolphins bring good luck. Many people believe this.

    (1) A．signs

    B．sounds

    C．words

    (2) A．group

    B．team

    C．school

    (3) A．glad

    B．sad

    C．afraid

    (4) A．more

    B．many

    C．much

    (5) A．learn

    B．imitate（模仿）

    C．study

    (6) A．alone

    B．lonely

    C．by itself

    (7) A．lives

    B．living

    C．life

    (8) A．high

    B．highly

    C．easy

    (9) A．with

    B．for

    C．to

    (10) A．well

    B．good

    C．bad

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