2. 外语
  3. It is useful to be able to predict the extent ______ which a price change will affect supply and demand.

It is useful to be able to predict the extent ______ which a price change will affect supply and demand.

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问题 It is useful to be able to predict the extent ______ which a price change will affect supply and demand.
选项 A、from
B、with
C、to
D、for
答案C
解析 本题考核介词搭配使用。题意为：能够预计到价格变化对供求的影响程度将非常有用。 to some extent意为“在某种程度上”。其它选项不能与extent搭配，故只能选C。
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大学英语四级

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