题干
When we were in Anhui, we took many photos ________ Mount Huang.
A：of
B：in
C：on
D：for
答案(点此获取答案解析）
A
When we were in Anhui, we took many photos ________ Mount Huang.
A：of
B：in
C：on
D：for
各项均为正数，且
，则