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E-mail , as well as cellphones, _____an important part in daily communication.
A．have playedB．playC．are playingD．is playing
C
考查主謂一致。as well as連接兩個主語，謂語動詞根據(jù)前一個主語決定，根據(jù)語境用進行時，故選C。
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