对于大中型客户，客户经理应把走访工作做精做细。
参考答案：错
It's ten years since the scientist _____ on his life's work of discovering the valuable chemical. [ ]
A. made for
B. set out
C. took off
D. turned up
与月经产生没有直接关系的脏腑是（）
A．肾
B．肺
C．胆
D．脾
E．胃
