E-mail, as well as telephones, _______an important part in our daily communication.      
A．playB．have playedC．a(chǎn)re playingD．is playing
D

試題分析：考查主謂一致。as well as的意思是：和，以及。通常放在主語(yǔ)的后面，但是謂語(yǔ)動(dòng)詞的單復(fù)數(shù)一定要根據(jù)前面的主語(yǔ)來(lái)確定，即根據(jù)E-mail來(lái)確定，所以這里謂語(yǔ)動(dòng)詞用單數(shù)。句意：電子郵件和電話在我們的日常交際中扮演重要的作用。故D正確。
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