“Would you be ______ help me?”     “I'd very much like to.”

A．kind enough

B．so kind to

C．so kind as to

D．as kind as to

斯密所举的这一事例说明分工（）。

A、受交换能力大小的限制

B、能减少劳动工序

C、能提高资源利用效率

D、能提高劳动生产率