2022高三牛津英语周报答案

分=4cos a+222.解:(1)曲线C的参数方程为y=sin a分得曲线C的普通方程为x2+y2-4x-12=0所以曲线C的极坐标方程为p2-4ocos=12(2)设A,B两点的极坐标方程分别为(,),(,)AB|=|p1-P1,又A,B在曲线C上,则p,P2是p2-4ps0-12=0的两根+p2=23lABI=lpr-e2 l

第二节(满分25分)One possible versionThen came the Rajasthan /v trip which was our official last trip I hanged out with my otherErieiends while she with the other two girls. I wasn,t enjoying this trip at all, which she could makeBout. When she saw me approaching the common washroom, she followed me in and shut thedoor. I didn 't know how to react. She gave me a tight hug and broke down. My tears were alsoout of control We knew we both wanted to be in each others company. We promised to growmature and let it not affect our friendshipaozIt's been almost 7 years after graduation since we picked up our friendship. Shes one of thefew people I really count on in my life. She's been with me through all my struggles, helping meconstantly to grow into a better individual. So have I. The only learning from our relationshipis-if someone is meant to be in your life, they will ensure they stay around some way or theher Willingness to keep a relationship should come from both the sides

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