1、点与圆的位置关系：

1、已知圆，求：

(1)过点A(4，-3)的切线方程；　　 (2)过点B(-5，2)的切线方程。

5. M: What did you do last Sunday?

　 W:I went to see a film.

III. Dear Jenny ,

　 How was your day off? Did you have fun visiting your grandpa? I didn’t have a fun day. My family planned to go camping on Sunday , but it rained in the morning. We had to stay at home. We watched TV and cleaned the house. I was very tired. In the afternoon, my cousin, Kim came to my home, and we played computer games for one hour because he had his piano lessons. After that, I went to the park by bike. I played basketball with other boys. On my way home, my bike was broken. I had to walk back home! I didn’t have any fun today.

Write soon!

　　　　　　　　　　　　　　　　　　　　　　　　 Mike

4. M: Hi, Jim! What are you doing?

　 W: I’m washing my shirt.

3. M: Zhang Hua, would you like to have some fish?

　 W: No, thanks. But I’d like to have some meat, please.

2. M: How do you go to school every day?

　 W: I go to school by bike.

5. How beautiful the snow is!

II. 1.M: Were you born in English?

　 W: No, I was born in American .

4. What’s the best clothing store in your town.

3. I want to listen to the radio.

2.This pen is cheaper than that one.