题目内容
( ) 5. They think that robots will talk like humans 25 to 50 years.
A. can;in B. can;after
C. be able to;in D. be able to;after
C
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题目内容
( ) 5. They think that robots will talk like humans 25 to 50 years.
A. can;in B. can;after
C. be able to;in D. be able to;after
C