单项选择题

W: Let’s look at the survey on drug use and health we conducted yesterday.How reliable are these figures?
M: They have a 3% margin of error.
Q: What are the speakers talking about?（）

A．Newly-launched products.
B．Drug users.
C．Survey results.
D．Public figures.

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多项选择题

A.IT系统
B.TT系统
C.TN系统
D.IN系统
E.NT系统

单项选择题

M：I think I’ll read ahead a few chapters，just to get the general idea.W：Try pacing yourself.Slowly but surely you’ll understand it all.Q：How does the woman suggest the man read the book？（）

A．He should understand the general idea first.
B．He should slow down reading.
C．He should not try to read too slowly.
D．He should mark time carefully.

W: Let’s look at the survey on drug use and health we conducted yesterday.How reliable are these figures?M: They have a 3% margin of error.Q: What are the speakers talking about?（）

W: Let’s look at the survey on drug use and health we conducted yesterday.How reliable are these figures?
M: They have a 3% margin of error.
Q: What are the speakers talking about?（）