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题目内容
（国家开放大学管理英语3.）
Which step should be firstly taken when you try door-knocking? 回答
A. Find a good excuse to door-knock
B. Wear an official name tag
C. Leave a door hanger
A. Find a good excuse to door-knock
B. Wear an official name tag
C. Leave a door hanger
参考答案