Gaokao Math Practice Question
不等式 $\left|\frac{x+1}{x-1}\right|<1$ 的解集为 （$\qquad$）
- A.$\{x \mid 0<x<1\} \cup\{x \mid x>1\}$
- B.$\{x \mid 0<x<1\}$
- C.$\{x \mid-1<x<0\}$
- D.$\{x \mid x<0\}$
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