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【单选题】
已知函数f（x）=lg（1-x）的定义域为M，函数 y= 1 x 的定义域为N，则M∩N=（　　）
A.
{x|x＜1且x≠0}
B.
{x|x≤1且x≠0}
C.
{x|x＞1}
D.
{x|x≤1}
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