单项选择题


What were some early problems with the first wave of Green advertisements

A．They were expensive.
B．No one believed them.
C．They were unsuccessful.
D．They were often not welcomed,
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单项选择题
Why does the speaker say Americans are short of sleep
A．Because of the stress factors.
B．Because of the leisure activities.
C．Because of the TV watching.
D．Because of the general American culture.
单项选择题
What happened to Cindy according to the woman
A．She was very lucky to see many whales.
B．She didn’t go to the whale-watching trip.
C．She didn’t see a whale on her whale-watching trip.
D．She liked the whale-watching trip very much.
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