——How many ________ are there on the table?
——Three. Are you thirsty? Let's cut one and eat it.
A:onions
B:ducks
C:watermelons
D:sandwiches
遥望洞庭山水翠,白银盘里一青螺。
已知f(x)是定义在R上的偶函数,且对任意x∈R,都有f(x)=f(x+4),当x∈4,6时,f(x)=2x+1,则函数f(x)在区间-2,0上的反函数f-1(x)的值f-1(19)( )