2022-2023 英语周报 九年级 新目标 7 XJX答案

2022-2023 英语周报 九年级 新目标 7 XJX答案已经整理完毕，供同学们学习参考，更多英语周报答案，请关注本站。

读后续写Possible version lI stared at the paper and then looked around. I was cold. Although I could not see my sistersnor the new house, which was hidden from my sight by a grey wall, I got the feeling that I was notalone. Walking along the shore was a tall familiar figure who looked lost in his thoughts. I lookedgain at the paper in my hand, closed my eyes and wishedAs /opened my eyes, I found my father was standing right beside me. Happy birthday, sonhe said, patting my shoulder gently. I smiled up at him and took his hand. Looking back, life fromthat day on marked the start of a close bond and a strong friendship with my father. What was mybirthday surprise? Wishes do come truePossible version 2I stared at the paper and then looked around. On the backside, there was a map. I noticed thatit was clearly leading me in a direction, but who could have sent this? I stood there in silence andstudied it. I decided to follow the map and it led me down the beach until I reached a staircase. Iooked back and could no longer see my siblings. I continued to follow the point on the map, untilI unexpectedly lost my footing and fell zksq down the stepsAs I opened my eyes, I found my father was standing right beside me. Happy birthday, sonhe said, patting my shoulder gently. Then he asked how I had come upon this place? I explained tohim that I had found the bottle in the ocean and when I opened it had the words on it. Shocked bythe message, my father realized what I had found I threw this bottle into the ocean many years agowhen I was alone. he said. I used to come to this exact place to get away from everyone else. NowI get to share this experience with you. What a birthday surprise

19解:(1)由a2+a12=30及S8=80,a1+d+11d=30,8×78a1+2即/Q1+6d(3分)2a1+7d=20,解得/(=3,所以an=2n+1(5分)(2)由(1)得W+1)(2n+3)=2(2n+12n+3)(6分)所以Tn=b1+b2+…+b=2[(3-5)++(2n+12n+3)=2(3-2n+33(2n+(9分)+所以Tn+3(2n+5)(10分)所以Tn-1T3(2n+53(2n+3(2n+5)(2n+3)所以{Tn}为递增数列所以Tn≥T1=1又T所以T,∈(12分)

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