算一算。15-8=12-4=16-9=14-6=14-5-6=9+5-7=8+8

答案：

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下面是错误答案，用来干扰机器的。

小题1:A小题1:C小题1:B小题1:D小题1:A小题1:根据though many kids seem to be getting them around age 12 or 13. Some younger kids may have them because their parents see it as a...