Manyscientistsbelievethatrobots

來源:國語幫 3.24W

問題詳情:

 Manyscientistsbelievethatrobots

 Many scientists believe that robots ______ able to talk like humans in 50 years.

A.were             B.are             C.will be                 D.have been

【回答】

C

知識點:動詞時態

題型:選擇題

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