5.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

土地的资本主义经营垄断使农产品的社会生产价格决定于农业生产中的

A．优等地的生产条件

B．中等地的生产条件

C．劣等地的生产条件

D．社会平等生产条件