尚文原创 2023届云南名校高考适应性月考试卷(一)1物理答案

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10.【解析分析】函数f(x)的定义域为(0，十∞)，f(x）=1+ax-(a+1)=ax-(a+1)x+1=ax-1)(x-1D2(1)当a≤0时，由f(x)>0得0 1,则f(x)在(0,1)上单调递增，在(1，+∞)上单调递减.当a=1时，了(x)=1D≥0，fx)在(0，十o)上单调递增.当0 l,由f>0得0<1或>由f)<0得1<<,则f(x)在(0,1)，(，十∞)上单调递增，在(1，)上单调递减.当a>1时，0<<1，由(x)>0得0 1,由f(x)<0得。 0,所以h(1)可知当a≥1时，(x)在「1,21上调递增，则函数f(.x)作[1,2]上的蚊小值为f(1)-号(a+1)-号1-ln22,懈得a2-21n2.因为2-2n2-1=1-2n2=h<0,所以≥1不合题意.当0

五、短文改错Hello,everyone,it is a honor for me to show you around Dujiangyan in tomorrow.To helpanyou have a knowledge of it,I'd like to make a briefly introduction.Dujiangyan,with a longbriefhistory of over 2000 year,is an ancient system locating in the Chengdu Plain,SichuanyearslocatedProvince.Once the plain is often flooded by the Min River,that rushed down from the MinwaswhichMountains.Therefore,Li Bing,one of the governors for the state of Qin,together with their son,hisbegan the building of Dujiangyan.It not only acted as a way Aprevent flood but a kind oftotransportation.Now it is list as a World Heritage Site as well as a five-A tourist attraction.listed