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[单选题]
The growth of a child is influenced by a number of factors,________ are beyond our control.(1分)
A
most of them
B
most of which
C
most of what
D
most of that
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试题答案：
B
答案解释：
解题思路：由于关系代词作介词of的宾语，只能由which引导，替代先行词factors。
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