题干
——Would you like a big bowl of ice-cream ____________ four yuan?
——No, thanks. I'd like a small one.
A：for
B：at
C：to
D：in
答案(点此获取答案解析）
A
——Would you like a big bowl of ice-cream ____________ four yuan?
——No, thanks. I'd like a small one.
A：for
B：at
C：to
D：in
的反函数为（ ）