问题补充：
Film has a much shorter history，especially whensuch art forms as music and painting. (·新课标全国，32)
A. having compared to
B. comparing to
C. compare to
D. compared to
答案：
A. having compared to
B. comparing to
C. compare to
(答案→)D. compared to
解析：D
解析句子的主语是film，它和compare之间是被动关系，所以要用被动形式。因此只能选D项。“when compared to...”相当于when引导的状语从句的省略，补全后为：when it is compared to...。句意为：电影的历史短得多，尤其是它与诸如音乐、绘画等艺术形式相比较时。
