选择题：一个口袋中有红球、白球共20个，这些球除颜色外都相同，将口袋中的球搅匀，从中随机摸出一个球，记下它的颜色后再放回口袋中，不断重复这一过程，共摸了300次球，发现

题目分类：中考
题目类型：选择题
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题目内容：

一个口袋中有红球、白球共20个，这些球除颜色外都相同，将口袋中的球搅匀，从中随机摸出一个球，记下它的颜色后再放回口袋中，不断重复这一过程，共摸了300次球，发现有120次摸到红球，则这个口袋中红球的个数约为____．

参考答案：

答案解析：

You should put_____ “s” at the end of this word.

You should put_____ “s” at the end of this word.

分类：中考题型：选择题

The reason he was absent from the meeting was his car broke down on the

The reason ____he was absent from the meeting was ____his car broke down on the way.

分类：中考题型：选择题

Mr. Smith______ Chinese for two years. Hes much better at it. Now.

Mr. Smith______ Chinese for two years. Hes much better at it. Now.

分类：中考题型：选择题

There ________ some children in the classroom. ( )

There ________ some children in the classroom. ( )

分类：中考题型：选择题

school,bus,I,to,school,by,go

school,bus,I,to,school,by,go

分类：中考题型：选择题