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题目内容
（安徽继续教育-大学英语）
5
Free ______ of shampoo is distributed from door to door.
A、
sample
B、
example
C、
product
D、
stock
Free ______ of shampoo is distributed from door to door.
A、
sample
B、
example
C、
product
D、
stock
参考答案