The decision-maker made a general survey of the ( ) of the advertisements on the promotion of sales of their new products.<br />A. result <br>B.. affect <br>C.effect <br>D. cause

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题目内容（国家开放大学英语语法）

The decision-maker made a general survey of the ( ) of the advertisements on the promotion of sales of their new products.
A. result
B.. affect
C.effect
D. cause

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