问答题

If they had sent a check to the telephone company last week，______________________________(此时他们的电话就不会被暂停服务了)．

【参考答案】

their telephone would not be out of service at this moment
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问答题
_________________(战争断断续续打了许多年)，but everyone in the family was safe．
单项选择题
What significance did Turing’’s theory have on the development of AI
A．It invented the AI computer language.
B．It established the expert system.
C．It taught technicians how to use complicated programs.
D．It started the research on Al.
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