选择适当的关联词。

他_____学习和品德都很好，_____身体也很好。（    ）

一个圆柱的侧面展开图是一个正方形，说明这个圆柱的底面周长和高相等。

选出加线词意思相同的一组（   ）。

一百多年前，人们就开始了对遗传物质的探索历程。对此有关叙述错误的是

    It was Children's Day yesterday, we 1the park. Our teacher was 2us.

    3 many people there. Some Young Pioneers (少先队员)4 near the river.

    5 sang and danced. There were some6 on the river. There was a hill

    7. Some boys8 in the river. We sat under 9 apple tree with our teacher. We 10on Children's Day yesterday.