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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热门试题

单项选择题

Which of these possible factors leading to greater productivity is not true

A．To make jobs more varied.
B．To give the worker freedom to do his job in his own way.
C．Degree of work contribution.
D．Demands for longer working hours.

单项选择题

The author of this passage is probably a ______.

A．teacher
B．worker
C．manager
D．physicist