题目

Dad: John, don’t stay (停留) in bed. Come here.John: Shh! The cartoon is wonderful! Wait a minute.…John: Dad, I’m coming.Dad: I'm ordering (点) some food (食物) on MEITUAN. I'd like some noodles and two pies?What about you?John: I’d like two hamburgers and some cola. How much is the hamburger?Dad: Fifteen yuan.John: And how much is the cola?Dad: Five yuan.John: Thank you, Dad.【1】Where are they? ( )A.At home. B.At the snack bar. C.At school.【2】What does “Wait a minute” mean? ( )A.小菜一碟 B.等一会儿 C.不用客气【3】How many pies would Dad like? ( )A.One. B.14．函数f（x）=ax2+bx-1，且0≤f（1）≤1，-2≤f（-1）≤0，则z=$\frac{2a+b}{a+3b}$的取值范围是[$\frac{1}{3}$，2]．