题目内容：
Advertising is often the most _______ method of promotion.A)
efficient
B)
efficiency
C)
effect
D)
effective
参考答案：
选择题：Advertising is often the most _______ method of pr
- 题目分类：华北水利水电大学-水利水电建筑工程-大学英语2
- 题目类型：选择题
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A)
efficient
B)
efficiency
C)
effect
D)
effective