到两定点F₁（-3，0），F₂（3，0）的距离之差的绝对值等于6的点M的轨迹是（   ）

静止是运动的一种特殊状态。（  ）

巴尔扎克的《____》形象地反映了法国封建贵族阶级的没落，深刻地揭露了资本主义社会中人与人之间____关系。

A: Hello, Wang Jun. ____ didn't you go to school yesterday?

B: Because I was ill and went ____ the hospital.

A: ____ did the doctor say?

B: He asked me to drink more water.

A: Oh. How are you now?

B: I'm well now. ____ you.

A: That's OK. I'm going to the zoo this afternoon.

B: Really? Can I go ____ you?

A: OK.