问题补充：
In ancient China, a gold dragon on the emperor’s clothes was regarded as a of power and position.
A. mark
B. sign
C. symbol
D. feature
答案：
A. mark
B. sign
(答案→)C. symbol
D. feature
解析：名词辨析。A痕迹；B迹象；征兆；C符号，象征；D特点；句意：在古代中国，皇帝衣服上的金龙被认为是权力和地位的象征。故C正确。
