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    15．The traffic problem has severely affected people's life．      ，the govenment should spare no efforts to solve it．（　　）
    A．BesidesB．ThereforeC．MeanwhileD．However

    分析 交通问题已经严重影响了人们的生活．因此，政府应该不遗余力地解决它．

    解答 答案：B
    句意表达的是因果关系；besides此外，表示递进；therefore因此，表示因果；meanwhile同时，表示并列；however然而，表示转折．故选B．

    点评 并列连词用来连接并列句．常用的并列连词有：表并列关系的and，neither…nor．，either…or…，as well as，not only…but also…；表转折关系的but，yet，however，still，while；表选择关系的either…or…，neither…nor…，or，otherwise；表因果关系的for，therefore，so，学习时要加以区分和掌握．

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