宏观调控是政府的主要职责和作用之一。下列属于政府履行经济职能的是（   ）。

已知定义在R上的函数$f\left(x\right)$满足$f\left(4\right)=f\left(-2\right)=1$，$f^{\text{'}}\left(x\right)$为$f\left(x\right)$的导函数，且导函数$y=f^{\text{'}}\left(x\right)$的图象如右图所示．则不等式$f\left(x\right)<1$的解集是（   ）

    Liu Mei has a h____ family. She lives w____ her grandparents and parents in Dantu. Her father is a doctor. He goes to work o____ foot every day. He is not very tall, b____ he is very strong. Her mother is a teacher. She goes to work by car. She often h____ her students at school. Liu Mei's grandparents stay at home. In the morning, they go t____ the park. In the afternoon, they d____ tea with their friends. In the e____, they watch TV .Liu Mei is a student in No.1Middle School. Her school is beautiful. There are many tall b____ there. She wants to s____ everyone around her school. She likes it very much.