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. Oil prices have risen by32 percent since the start of the year,_____a record US $57.65 a barrel on April 4.

 A. have reached B. reaching  C. to reach D. to be reaching

B


解析:

分词做结果状语,不能选C,因为不定式作为原因和结果状语时候不能放句子开头。

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