英语周报九年级新目标2021-2022第54答案

x-5)2 y2=16,21解:(1)联立方程得x2 (2p-10)x 9=0.因为抛物线C与圆M有且只有两个公共点,所以△=(2p-10)2-36=0,解得p=2或p=8.又0

写作Dear OliverKnowing that you are returning to your homeland, I am reluctant to saygoodbye to you.【高分句型一】(表达对Over的不舍之情)As for the gift, after careful consideration I recommend you the Chineseknot. Made of red threads, it always represents happiness, luck andunity, though in different shapes. It is a tradition for Chinese to hang it inhouses as a decoration,【高分句型二】 It is usually given as a precious gift toclose friends. I think it can convey your best wishes to your friend.(BF-种礼物并说明原因)Hope my advice can be of some help.(希里)Yours, Li Hua

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