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题目内容
（兰州大学大学英语（3））
16.
(4分)It is useful to be able to predict the extent ______ which a price change will affect supply and demand.
A. from
B. to
C. for
D. with
(4分)It is useful to be able to predict the extent ______ which a price change will affect supply and demand.
A. from
B. to
C. for
D. with
参考答案
