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What seems very old fashioned these days?A.Speaking to a machine.B.Using voice recognition


What seems very old fashioned these days?

A.Speaking to a machine.

B.Using voice recognition system to find out a phone number.

C.Spending a lot of money trying to find out a phone number.

D.Searching for a number in a 5 cm thick telephone directory.

请帮忙给出正确答案和分析,谢谢!

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