— Do you like to eat __________?
—Yes, I like apples very much.
A:fruit
B:meat
C:vegetables
D:eggs
给出下列四个函数:
①y=2x;②y=log2x;③y=x2;④y=x.
当0<x1<x2<1时,使fx1+x22>fx1+fx22 恒成立的函数的序号是____ .