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 reached
B. reaching
C. to reach
D. to be reaching
网友回答
A. have reached
(答案→)B. reaching
C. to reach
D. to be reaching
解析：从句意来分析， 主句部分表示油价上涨了百分之三十二，逗号后面的内容为油价上涨后的必然结果“达到……记录” 。