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    In the meantime, the question facing business is whether such research is ______ the costs.

    A) worthy             B) worth of         C) worth             D) worthwhile

    C


    解析:

    A项worthy表示“值得的，配得上的”，后可接介词of或动词不定式，如something worthy of note(值得注意的事)，worthy to be casidered(值得考虑的)；B项worth之后通常不接of，故不排除；D项worthwhile表示“值得花时间(或精力)的”，如：These results were not worthwhile. 这些结果并不合算。C项worth表示“值……的，相当于 ……价值的”，多用作表语，后接宾语。例如：This precision instrument is worth l0，000 yuan. 这台精密仪器值一万元。所以根据以上规则和题意要求，正确答案为C。

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