Liuxiang earned the respect from the whole world as he hopped down the track to the finish

问题补充：

Liuxiang earned the respect from the whole world as he hopped down the track to the finishing line, the last hurdle.

A. kissed

B. to kiss

C. kissing

D. having kissed

答案：

A. kissed

B. to kiss

(答案→)C. kissing

D. having kissed

解析：考察分词作状语用法。Kiss与刘翔构成主动关系，使用现在分词的形式。D项完成式表示已经完成的动作。本题没有完成的意思，故C正确。