单项选择题

A．The inventor decides who the expired patent goes to.
B．The inventor may strive for a longer valid time span.
C．The inventor will try hard to sell his products faster.
D．The inventor will hesitate when giving his data to the public.
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单项选择题
A．There are no facilities for the disabled.B．Electronic lifts are installed on them.C．The drivers are irresponsible for the driving.D．There are voluntary workers on them.
A．There are no facilities for the disabled.
B．Electronic lifts are installed on them.
C．The drivers are irresponsible for the driving.
D．There are voluntary workers on them.
单项选择题
A．The tailor’s.B．A dress-up party.C．The theatre.D．A shopping mall.
A．The tailor’s.
B．A dress-up party.
C．The theatre.
D．A shopping mall.
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