2. 外语
  3. It is very necessary to know the extent______supply and demand will influence the price.

It is very necessary to know the extent______supply and demand will influence the price.

admin2012-06-27  69
问题 It is very necessary to know the extent______supply and demand will influence the price.
选项 A、in which
B、from which
C、to which
D、for which
答案C
解析 题干：了解供需在何种程度上影响着价格是非常必要的。本题主要考查定语从句关系代词前的介词的选择，应根据前面的先行词，先行词为the extent，意为“在……程度上”是to…extent，所以C选项是正确选项。
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