题目内容
【题目】拍拍手,读读下面的歌谣。
A plus B is 100. A minus B is 20.
A is 60, B is 40.
A plus B is 90. A minus B is 50.
A is 70, B is 20.
A plus B is 70. A minus B is 10.
A is 40, B is 30.
【答案】略
【解析】略
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题目内容
【题目】拍拍手,读读下面的歌谣。
A plus B is 100. A minus B is 20.
A is 60, B is 40.
A plus B is 90. A minus B is 50.
A is 70, B is 20.
A plus B is 70. A minus B is 10.
A is 40, B is 30.
【答案】略
【解析】略