Question

【题目】The average Facebook user in the United States has 245 friends，according to a study ______in February.

A．publishing

B．published

C．publish

D．to publish

Answer 1

【答案】B

【解析】考查非谓语动词作定语。句意：据二月份发表的一份研究表明，美国普通的Facebook用户有245个朋友。a study和publish之间是逻辑上的被动关系，因此用过去分词作定语。