2022英语周报九年级上册第八期DE答案

One possible version:Dear JonahI'm sorry to hear that you want to give upyour part in the play. I m writing to persuade younot to do thatFirst of all, all the roles are important in aplay and remember that helping your friend toshine is part of being a friend. Second, playingyour part in the play is a good chance for you toimprove your acting. So, finding ways to worktogether, like practicing your lines or dancesteps, will make the play better instead of givingit up. Finally, remember that this play will endbut your friendship will continueI hope you will find my suggestions helpful.Yours,Li Hua

22、解析:1√3x+t cos(1)直线l的参数方程为(t为参数),即y=l+tsiny=/×1(t为参数).…2分由p=2√2c(-),得p=2cs+2sin0,∴p2=2pcs0+2psin,∴x+y=2x+2y,故圆C的直角坐标方程为(x-1)2+(y-1)2=2…5分(t为参数)代入(x-1)2+(y-1)2=2,y=1+-t得t27分设点A,B对应的参数分别为1,2,则+12=方,≈?…8分1PA+PHt上y(t+1)2-4=210分

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