The growing speed of a plant is influenced by a number of factors, _______ are beyond our control.

A．most of them

B．most of which

C．most of what

D．most of that

将地籍按照( )分类，可分为城镇地籍和农村地籍。

A．功能
B．建立时序
C．所记载的对象
D．表现形式