2022高二英语周报第30期答案

【答案与解析】本文是一篇记叙文。一位退休老人成功戒烟,并利用戒烟省下来的钱使自己的梦想成真24.B细节理解题。根据第二段“ Every year in June, he empties the bottle of cash and totals up the result.”可知,NiloVeloso每年都坚持计算不抽烟而节省出来的钱。25.A细节理解题。根据第四段“ Im going to spend eight days in Aparecida, in the state of sao paulo, with my wife.Imanaged to cash in most of the coins and buy the tickets for a trip in august I've already visited almost all of brazil.可知,NiloⅤ lose今年会和他的妻子一起旅游26.D细节理解题。根据第五段“ Nilo told the reporter from gl his decision to give up smoking happened one day when,upon leaving work for lunch break, he started to feel very ill in his car..”可知,一天中午的不舒服让 Nilo veloso最终决心戒烟。27.C推理判断题。根据最后一段可推断,他不吸烟后生活方式更加健康,故选C项。

22.解(1)∵p-4cos0+2sin0=0,.p0+2psin0=0∴.x2+y2-4x+2y=0,即(x-2)2+(y+1)2=5.…………4分2-tcoso(2)将直线1的参数方程(t为参y=l+tsina数)代入C的普通方程(x-2)2+(y+1)2=5,得t2+4 tsina-1=0则t1+t2=-4sina,t1t2所以√QA|2+QB12√(x1+2)2-2142=√16sin2a+2≤3√2,所以√QA12+QB≤3√2,即√QA1+QB的最大值为3√210分

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