问题
选择题
—The similarities between social networks are striking. —That ________ come as no surprise，because they are all products of the Internet.
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答案
A
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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