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3rd

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动物的牙齿结构—练习(一)

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17 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    请问肉食动物拥有什么牙齿?

    犬齿

    臼齿

    虎牙

    门齿

  • 2. Multiple Choice
    30 seconds
    1 pt

    哪一颗牙齿能帮助动物撕裂食物?

    门齿

    犬齿

    臼齿

  • 3. Multiple Choice
    20 seconds
    1 pt

    杂食动物有几种牙齿?

    一种

    两种

    三种

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