问题描述：
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
为什么不选A
control.
A.most of them
B.most of which
C.most of what
D.most of that
为什么不选A
问题解答：
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