英语周报2022-2022高二北师大第八期答案

【语篇类型】一记叙文【主题语境】人与自我一助人经历【文章大意】本文讲述了作者在芝加哥偶遇一个无家可归的人并施以援手的故事。【核心素养】语篇以作者帮助一个无家可归的人为背景,展示了人性的闪光点和生活中的真善美,助力考生树立正确的价值观,体现了文化意识这一核心素养。郾熟词新义1.dow常用义:淋浴文章义:大量给予He showered her with gifts.他送给她许多礼物。2. finance常用义:n.资金;财政,金融,财务文章义:t.为……提供资金The concerts are financed by the Arts Council.音乐会由艺术协会出资举办词汇积累 flash back(osh.)回忆,回想,回顾;(尤指电影、书等)闪回,倒叙Her thoughts flashed back to their wedding day.她回忆起他们婚礼那一天的情景。难句分析1 only had a few dollars left in my wallet,,. but I went tobu连接两个并列句him directly, bent down and handed them to this fellow, talking withhim, touching his hand and wishing him well before I left现在分词短语作伴随状语before引导时间状语从句译文:我的钱包里只剩下几美元了,但在我离开前,我径直走到他面前,弯下腰,把钱递給他,并和他交谈,抚摸他的手,祝他一切顺利。4.D【关键能力】考查理解具体信息的能力。【解题思路】根据第二段的" a man sitting on the sidewalk..Mymind flashed back and I realized I had seen a homeless person oncebefore:Me"可知,作者在外出散步时看到了一个无家可归的人,这使他想起了自己无家可归的经历。5.c【关键能力】考查推理判断的能力。【解题思路】根据第三段的" the home I grew up in caught fire in themiddle of the night. I can still remember the fire destroyed everythingwe owned ""our small town communitytemporary house"可知,作者的家遭遇火灾,大火烧毁了他们的一切使他们无家可归。第二段的" I had seen a homeless person oncebefore:Me"也是提示。6.D【关键能力】考查理解具体信息的能力。【解题思路】根据第四段的" I only had a few dollars left in mywallet, but I went to him directly, bent down and handed them to thisfellow, talking with him, touching his hand and wishing him well beforeI left"可知,作者把身上仅有的几美元都给了那个无家可归的人,且和他交谈,安慰了他。7A【关键能力】考查推理判断的能力。【解题思路】根据最后一段的内容可知,作者一直并且将继续帮助他人,作者认为即使自己所能做的非常有限,但只要人人付出点,世界就会变得更好。结合上文中的“ Thankfully, our small towncommunity showered us with love and care""I could remember feelingloved even after losing so much"可推知,作者感恩于自己得到的爱与关怀,也希望将其传递下去故选A项”关爱使世界更美好”。B项”人之初性本善";C项"不尝试,不知晓”;D项"凡事要肯等待"。

12可得g(x,) 2In n,-ax, +r: 2In x,-2 r1-2+r.2x,+2x,(9分)令h(1)=-t-21+2mn(0<1<1),则h'(t)=-3r+2lnt,……………………………(10分)10<1<1时,h(1)<0.h(n)为减函数,所以h(1)>h(1)=-3…………(11分)所以要使g(x1)-mx:>0恒成立,只需满足m≤-3.所以实数m的取值范围是(一∞,-3].……………(12分)21.【命题意图】本题考查导数及其咸川,考查不等式恒成立求参数取值范围【解析】(1)出知可得/"(x)=2-a(x>0).(1分)当≤0时,(x)>0,f(x)在(0,+x)上单调递增;………………(2分)a>0时,令∫(x)=0,解得r=2“0 0、fx)单调递增当x>二时厂(x)<0f(x)单调递减.……(4分)综上,当≤0时x)在(0,+x)上单时递增:当>0时()在/.2计单调逆递增,在(a,+)上单叫递减(5分)(I)g(r)=f(r)+r=2ln x-ar+x',则g(x)≈2∥+2x=2x2-ax+2(x>0).………(6分)若函数g(x)=f(x)+x有两个极值点x1,x2(x1 0,所以解得a>4…………(7分). t所以x1+2=2>2①,1:=12所以0 0恒成立,只数(2>m相成立

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