单项选择题

A．Harvard.
B．Cambridge.
C．Yale.
D．Princeton.
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单项选择题
A．Watch less television.B．Return the television to the store.C．Pay for the television.D．Show the man how to use the television.
A．Watch less television.
B．Return the television to the store.
C．Pay for the television.
D．Show the man how to use the television.
单项选择题
A．The new law expanded the number of baggage screeners.B．It required that security personnel operate metal detectors and X-ray machines for possible weapons or illegal substances.C．It required that ail passenger luggage, including checked luggage, be screened.D．It required that all checked luggage be put through special explosives-detecting devices.
A．The new law expanded the number of baggage screeners.
B．It required that security personnel operate metal detectors and X-ray machines for possible weapons or illegal substances.
C．It required that ail passenger luggage, including checked luggage, be screened.
D．It required that all checked luggage be put through special explosives-detecting devices.
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