单项选择题

What were some early problems with green advertisements

A．They were expensive.
B．No one believed them.
C．They were unsuccessful.
D．They were often deceptive.
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单项选择题
What was the response by consumers
A．Consumers were responsible.
B．Consumers were hostile.
C．Consumers didn' t care all the time.
D．Consumers got tired of it.
单项选择题
When did the third green wave come
A．When environmental concern rises.
B．When advertisers are self-regulating themselves.
C．When advertisements become very regulated.
D．When the mainstream also becomes concerned about it.
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