2022八年级上英语周报答案

写作Dear TonyYou say you have dimeulty adap ting to the new study and life herelow exactly how you feel.(表示关心) You must be very anxious,butqui te normal since this is your first time to study in a foreig【高分句型-】 Just relax. First, break bearning goaIs into small stepsen get involved in school activities, wherou can make more friends.【高分句型二】(帮他分析原因Hopefully my sugsestions would be helpfum always the person youcan count on提供建议)s t

20.解:(1)由题意可得2b=2√2,所以b=2,=1-2=解得a=2√2,……(3分)所以椭圆C的标准方程为=1.……5分)(2)由于直线!平行于直线y=2x,即y=号x设直线t在y轴上的截距为灬所以l的方程为y=x n(n≠0).……(6分)由得x2 2nx 2n2-4=0,因为直线l与椭圆C交于A,B两个不同的点,所以△=(2n)2-4(2n2-4)>0,解得-2

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