Oil prices have risen by 32% since the start of the year,___a record US$57.65 a barrel on April 4.

题目

Oil prices have risen by 32% 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

答案

B.reaching 逗号不能连接两个独立的句子.所以后面半句不能是个完整的句子`如果选第一个有了动词HAVE就是一个句子了`所以用非谓语形式中的动名词形式