2022-2022高考英语周报cqy答案

书面表达With the advance of modern technology, new inventionsand developments are rising our daily life, which are mak-ing great changes to our lifestyle. Some details are as folThe mosressive one is the rapid development of transportation, IrisI have witnessed many great cmore convenient for people to travel because of shared bicr-cles and high-speed trains. Besides, with a smartphone inr and ids ande can payfortheble of brrer they likgang cashthat IsPersonally, it is the hard work of cI am prd of myg abech changes.Soe bed bet-t our lifeill betThe coming-of-age ceremony is significant and meaning-ful. Through this activity, the students, being adults, de-velop a stronger sense of responsibility and gratitude. Thehave realized they should learn to serve the people and makeeycontributions to society in the near futureours英语冲di Hua

17解:(1)设等比数列{an}的公比为q(q>0),由题意得a a6=6a;整理得q q2=6解得q=2或q=-3(舍去又所以所以lo (5分)(2)由题意得Sn="(61 b,)n[1 (2n=1)所以c2(n 1所以T=2(1-1 1_1(10分

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