单项选择题
Questions 19 to 22 are based on the conversation you have just heard.
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A．Wind speed.
B．Rainfall.
C．Water temperature.
D．Direction of approach.
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单项选择题
A．Catching runaway criminals.B．Scratching the hidden bombs.C．Patrolling the dangerous town.D．Drug-sniffing or bomb-sniffing.
A．Catching runaway criminals.
B．Scratching the hidden bombs.
C．Patrolling the dangerous town.
D．Drug-sniffing or bomb-sniffing.
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单项选择题
A．Computers can bring financial problems.B．Computers can bring unemployment.C．Computers can be very useful in families.D．Computerized robots can take over some unpleasant jobs.
A．Computers can bring financial problems.
B．Computers can bring unemployment.
C．Computers can be very useful in families.
D．Computerized robots can take over some unpleasant jobs.
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