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    —The similarities between social networks are striking.

    —That ________ come as no surprise，because they are all products of the Internet.

    A．should?? B．shall?? C．may?? D．must

     

    【答案】

    A

    【解析】句意：——各种社交网络惊人地相似。——那没有什么令人吃惊的，因为这些社交网络都是互联网的产物。should意为“应该”。

     

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