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項worthy表示“值得的，配得上的”，后可接介詞of或動詞不定式，如something worthy of note(值得注意的事)，worthy to be casidered(值得考慮的)；B項worth之后通常不接of，故不排除；D項worthwhile表示“值得花時間(或精力)的”，如：These results were not worthwhile. 這些結(jié)果并不合算。C項worth表示“值……的，相當(dāng)于 ……價值的”，多用作表語，后接賓語。例如：This precision instrument is worth l0，000 yuan. 這臺精密儀器值一萬元。所以根據(jù)以上規(guī)則和題意要求，正確答案為C。

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