单项选择题

The National Institute of Mental Health is conducting a far-reaching research to determine the psychological effects of using drug.

A．extensive
B．refined
C．prevalent
D．tentative

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单项选择题

Woman: Are you up for a crossword puzzle game Man: I tried it before. It's way over my head. Question: What does the man mean

A．The game is simple to learn.
B．He doesn't know how to play.
C．He's too tired to help the woman.
D．He has a headach

单项选择题

Man: Can you come over for dinner tonight Woman: I'm up to my ears in work, so I'll have to take a rain check. Question: What does the woman mean

A．She wants to check the weather before deciding.
B．She has a problem with her hearing.
C．She'd enjoy coming to dinner another time.
D．She wants the man to help her with some work.

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