单项选择题


What does the speaker say about sleeping pills

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．
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单项选择题
How long does it take the man to go to work in the morning
A．A．30 minutes．
B．B．20 to 30 minutes．
C．C．15 minutes．
单项选择题
In what way can we make a machine intelligent
A．By making it work in such environments as deserts, oceans or space.
B．By working hard for 10 or 20 years.
C．By either properly programming it or changing its structure.
D．By reproducing it.
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