320平方厘米=____平方米

____立方米=1580立方分米   

4.12升=____立方分米．

A

    Judy's Invitation

Judy hopes you can come to her birthday party!

Time：5：30 p．m．一8：30 p．m—June 11 th

Place：Flat 15A，Hong Kan Building

Tel：233—4615

    Sale

Welcome to Little Star Clothes Store．

We have T-shirts in all colors for 15 yuan each．

Do you like sweaters? They are only 50 yuan each．

Come and see for yourself．

You can buy anything at www．LittleStar@td．com．

To know more information，please call Adam at

883-4092．

    Players Wanted

 Are you good at playing ping—pong?

Can you play basketball?

Call you run very fast?

Then you can be on our school sports team．

Please call Jack at 876-5239 if you are interested．

    Moana

Come and see Moana．

It's all exciting movie．

Time：5：30 p．m．一7：17 p．m—June 24th

 Place：Xinxin Cinema

 Please call Mary if you want to go．Her phone number is 867—4316．

已知函数f（x）=x³+ax²+bx+c，曲线y=f（x）在点x=0处的切线为l：4x+y﹣5=0，若x=﹣2时，y=f（x）有极值．

（1）求a，b，c的值；

（2）求y=f（x）在﹣3，1上的最大值和最小值．