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【题目】It is important to make new laws and create international standards for these laws similar to _______ concerning international airspace.

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

【答案】C

【解析】

试题分析:考查代词。句意:制定新法律并为其建立类似于有关国际空域的国际标准是重要的。those指代standardsconcerning 现在分词作定语修饰those即standards。故选C。

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