A. (1,7) B. (1,-3) C. (1,5) D. (1,

练习题库2022-08-02  14

问题 A. (1,7) B. (1,-3) C. (1,5) D. (1,-1)

选项 A. (1,7)
B. (1,-3)
C. (1,5)
D. (1,-1)

答案 A

解析
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