单项选择题

A．Buy something to eat on the train.
B．Take the five o’’clock train.
C．Wait to catch a later train.
D．Take the train to the airport.
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单项选择题
A．actB．actionC．actingD．activity
A．act
B．action
C．acting
D．activity
单项选择题
What significance did Turing’’s theory have on the development of AI
A．It started the research on Al.
B．It established the expert system.
C．It taught technicians how to use complicated programs.
D．It invented the AI computer language.
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