Oil prices have risen by 32 percent since the start of the year，________ a record US $57.65 a barrel on April 4.
A．have reachedB．reaching
C．to reachD．to be reaching
B
從句意來分析， 主句部分表示油價上漲了百分之三十二，逗號后面的內(nèi)容為油價上漲后的必然結(jié)果“達(dá)到……記錄” 。
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