单项选择题

Why can the colour of blue help people prevent nightmares

A．Because it can make people calm down.
B．Because it can lower people’s blood pressure.
C．Because it can help people visualize positive things.
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单项选择题
What can be inferred from the conversation
A．The woman is going to the Recreation Centre.
B．The man is going to the Music Complex.
C．The woman enjoys taking the bus with the man.
问答题
What did the new purpose mean in the second paragraph
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