the Forbidden City is almost 600 years old, it is still very beautiful.
A. Although; but
B. /; although
C. Although; /
D. Because; so
网友回答
A. Although; but
B. /; although
(答案→)C. Although; /
D. Because; so
解析：although与but 不能同时使用，because与so 不能同时使用，再根据题意，选C