单项选择题

Questions 11 to 18 are based on the conversation you have just heard.

A．Studying microbiology for a year.
B．Teaching biology.
C．Taking a nap.
D．Taking a different course.
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单项选择题
A．All the students would like a formal ball.B．Raising money will be hard.C．The festival will begin the year nicely.D．The club needs some sports as well.
A．All the students would like a formal ball.
B．Raising money will be hard.
C．The festival will begin the year nicely.
D．The club needs some sports as well.
单项选择题
A．They might eventually cause you to lose sleepB．They help produce a neurotransmitter in the brain.C．You must not drink milk if you take them.D．They make it unnecessary to take naps.
A．They might eventually cause you to lose sleep
B．They help produce a neurotransmitter in the brain.
C．You must not drink milk if you take them.
D．They make it unnecessary to take naps.
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