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    24、To prevent cyber crime more efficiently, it is important to make new laws and create international standards for them similar to     concerning international airspace.

    A．that          B．what           C．one          D．those

    24、D

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    To prevent cyber crime more efficiently, it is important to make new laws and create international standards for them similar to     concerning international airspace.

    A．that          B．what           C．one          D．those

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