24．If you talk to your children as if they adults, you will strengthen the bonds and become closer f

题干

24．If you talk to your children as if they adults, you will strengthen the bonds and become closer friends.

A：are

B：were

C：have bee

D：would be

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B

在一个不透明的盒子里装着若干个白球，小明想估计其中的白球数，于是他放入10个黑球，搅匀后从中随机摸出一个球记下颜色，再把它放回盒子中，不断重复上述过程，得到如下数据：

估算盒子里白球的个数为（　　）