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根据探究“唾液对淀粉的消化实验”完成下列练习

上一题 下一题 0.0难度 选择题 更新时间:2019-10-18 11:39:25

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同类题1

三角形的面积与平行四边形的面积相等,底也相等,如果三角形的高是4分米,那么平行四边形的高是多少分米?

同类题2

填一填。

同类题3

口算

同类题4

同源染色体分离发生在

同类题5

根据短文内容,选择正确答案。

    Jane always goes to school early. She likes to talk to her friends before class. After school she does not go home early. She is always late. Jane stops to see the animals in the pet shop. She likes to see the dogs. One of them is a little dog. She watches the little white dog play in the window of the shop. She watches for a long time, so she comes home late.

    One day her father and mother ask why she is late, and she tells them about the little dog in the pet shop.

    Jane is not late the next day. She stops to look in the window of the shop. But she doesn't see the little white dog, and she is very sad. She is also very happy, today is her birthday.

    Mother shows her a big birthday cake and Father gives her a birthday surprise. He gives the little white dog from the shop. Jane is very happy. The next day Jane does not come home late. She runs home to play with the white dog.

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