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E-mail, as well as telephones, ___ an important part in daily communication.
A.have playedB.is playingC.are playingD.play
B
这题考查主谓一致:当主语被as well as连接时,谓语和前面的主语一致,这题前面的主语是E-mail,所以谓语用单数,选B。
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