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Some people get in touch with each other by mobile phones__________ others keep contact with each other by e-mail.
A.whenB.beforeC.whileD.since
C   

试题分析:考查连词:A. when当…时候B. before在…之前C. while当…时候,然而,虽然,D. since既然,句意:一些人通过手机彼此联系,然而一些人通过电子邮件联系。选C。
点评:此题主要考查连词的辨析,选择连词主要是看前后句的关系,因果关系用表因果的连词,转折关系用转折连词,并列关系用并列连词,要求考生具有一定的句子分析能力和词义辨析能力。
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