实证闭经的发病机理为

A．寒湿凝滞，胞脉受阻，经血不通

B．肝郁气滞，瘀阻冲任，经血不下

C．肝郁侮脾，冲任失调，经血不下

D．湿热下注，血热互结，经血不下

E．痰湿阻滞，胞脉壅塞，经血难下

Anne asked Jim _____ she could borrow a pen from him. [ ]

A. who

B. what

C. which

D. whether