题干
---Bill, would you like to go camping sometime this month?
--- ．
---Probably just the two of us．
A：Sure, Jack wants to go too．
B：I’d love to, but I heard it’s too crowed．
C：Fine, as long as it’s weekend．By the way, who’s going?
D：Sounds great, when can you get time off from work?
答案(点此获取答案解析）
C
，
中为无理数的是（ ）
