把一个底面积是6.28平方分米、高9分米的圆柱体铁块熔铸成一个底

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问题解答题

把一个底面积是6.28平方分米、高9分米的圆柱体铁块熔铸成一个底面积是12.56平方分米的圆锥体，圆锥体的高是多少分米？

答案

6.28×9×3÷12.56，

=56.52×3÷12.56，

=169.56÷12.56，

=13.5（分米）；

答：圆锥体的高是13.5分米．

句型转换

根据括号里的要求改写句子。

1. The pen can be kept for two weeks. (对画线部分提问)

_________ the pen _________?

2. We must send the sick man to hospital at once. (改为被动句)

The sick man must _________ to hospital at once.

3. About one hundred stamps have been collected. (对画线部分提问)

________ stamps _________ collected?

4. the boy, the glass, by, broken, was (连词成句)

______________________________________________________

5. The policeman saw a thief rush into a bank. (改为被动句)

A thief ________ rush into a bank by the policeman.

问答题简答题

简述人际交往在日常工作和生活中的重要性。