题干
- What's in the classroom? ( )
- Two doors and _____ chairs.
A：many
B：may
C：math
答案(点此获取答案解析）
A
- What's in the classroom? ( )
- Two doors and _____ chairs.
A：many
B：may
C：math
中，
、
、
成等比数列，
是
的前n项和，则