E-mail, as well as telephones, an important part in daily munication.
A. have played
B. is playing
C. are playing
D. play
网友回答
A. have played
(答案→)B. is playing
C. are playing
D. play
解析：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。