A. -2 B.2 C. -1 D. 1A

shuhaiku2019-12-17  1

问题

选项 A. -2B.2C. -1D. 1

答案A

解析[img]/upload/tiku/233/5183501_1.jpg[/img][img]/upload/tiku/233/5183501_1_1.jpg[/img]
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