我会填。
____的孩子 ____的表情
____的鲜花 ____的苹果
A. At eleven o'clock.
B. I don't think so.
C. I'm going to swim with Tim.
D. It's five o'clock.
E. He is going to take pictures.
读下图我国第五次人口普查人口年龄结构图,回答下列各题。