题目

______ Tom ______ Mary speak Chinese very well, so they can communicate with these Chinese students very well.A. Neither; nor B. Not only; but alsoC. Both; and D. Either; or 答案:【答案】C【解析】句意:汤姆和玛丽两个人都说汉语说得非常好,所以他们能和这些中国学生很好地交流。Neither; nor 既不……也不……,连接并列主语,谓语用就近原则;Not only; but also 不仅……而且……,谓语用就近原则;Both; and .…..和……两者都,连接并列主语,谓语用复数形式; Either; or 或者…已知函数f(x)满足:f(0)=0,f(n+1)=f(n)+3,n∈N+,则f(3)等于(  )A.0B.3C.6D.9
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