第三个等式6?2=12在?代表乘时正确,但在?代表加、减、除时错误,因此第三式同第一式一样,也是有可能对也有可能错。
英语作文【在百度搜索更多与“名师解读美国GRE数学题型变化(2)”相关英语作文】
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