题目内容：
Liu Xiang found himselfby reporters and his fans on his arrival at the airport.
A．surrounding
B．surrounded
C．being surrounded
D．to surround
正确答案：
B
答案解析：
考查“find+复合宾语”结构。句意：刘翔一到机场就发现自己被记者和粉丝包围着。surround与himself为被动关系，故用过去分词作宾语补足语，表示被动或状态。选B。
考点核心：
序数词的概念：
表示顺序的数称为序数词。如：first, second, third, fourth。
