□015÷9的商是四位数，□里必须填______．

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问题填空题

答案

要使商是四位数，□≥9，

所以□里面只能填9，

故答案为：9．

判断题

( ) 1.	This is a tree.
( ) 2.	— Is that a butterfly? — No, it isn't.
( ) 3.	— How many people are there in your family? — There are three.
( ) 4.	I want two cats.
( ) 5.	I can dance.

问答题

痛经的诊断要点。