第三部分写作第一节【写作指导】本题要求写一篇报道,首先考生应把演讲比赛的目的、过程和反响写清楚;其次应合理布局,充实内容,仇化语言,提高得分档次。可用表达:要点1: In order to/ Aiming to arouse our interest in.Aimed at improving our spoken English等。k, 5. 2 thirty candidates participated in, everyone tried their best to/de the effort to .. impressed us with., splendid performance e4 E. 3 not only. . but also.., was highly thought of/a favoritewith.., more similar activities will be carried out/ arranged F【佳作展台】An English Speaking ContestAimed at enriching our campus life and improving our spokeni English, an English speaking contest was held in the hall last Sunday, inwhich thirty candidates participated. Every candidate was required to givea speech in 10 minutes. In the course of the contest, all competitors hadperfecl performance, with their pretty pronunciation and intonationimpressing the judges and audience present. No doubt, the whole processwas full of cheers and excitement. The contest was quite successful and afavorite with all us students. We hope more similar activities will becaRice ou【亮点梳理】亮点词汇: enrich, in the course of, prettypronunciation, intonation等。亮点结构:非谓语动词短语作状语( Aimed at enriching our campuslife and improving our spoken English),"介词+ which"引导的定语从句( in which thirty candidates participated),with复合结构( with their prettypronunciation and intonation impressing the judges and audiencei present)等

21.(12分)解:(1)g(x)的定义域为(0,+∞),I-axg(x)>当a≤0时,g'(x)>0恒成立,所以,g(x)在0,+∞)上单调递增2分当a>0时,令g(x)=0,得到x所以当x∈(0,-)时,g'(x)>0,g(x)单调递增,当x∈(-,+∞)时,g'(x)<0,g(x)单调递减,综上所述当a≤0时,g(x)在(0,+∞)上单调递增当a>0时,g(x)在(0,-)上单调递增,在(一,+∞)上单调递减3分(2)记函数o(x)=e2-hx=-lhx,则q(x)4分x易知φ(x)在(0,+∞)上单调递增,又由q(1)<0,q(2)>0知,q(x)在(0,+∞)上有唯一的实数根x0,……6分且1<<2,则q(x)=e2\=0,即e2=(*),当x∈(0,x0)时,φ(x)<0,(x)单调递减:当x∈(xo,+∞)时,φ(x)>0,φ(x)单调递增,所以o(x)≥(x0)=e2-mx,结合()式eh?),知-2=-hx,………10分所以叭(x)29)=2+x1-2=52-2+1(x-1)>0,11分则o(x)=e2-lnx>0,即e-2>hx,所以有f(x)

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