安徽省桐城中学2015-2016学年高二英语下学期第三次月考试题
高二英语下学期第三次月考试题高二全册英语试题 (2)
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得夺市安庆阳光实验学校度第二学期第三次考试高二英语试题第一部分听力(共两节,满分30分)第一节(共5小题,每小题1.5分,满分7.5分)听下面5段对话。
每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1.What is the man probably?A.A teacher.B.A student.C.A player.2.Where are the speakers most probably?A.In the hospital.B.In the classroom.C.In the teachers’office.3.How much will the woman pay?A.6 yuan.B.8 yuan.C.12 yuan.4.What does the man mean?A.He wants the woman to attend the meeting.B.He can answer the questions after the meeting.C.He will be busy during his office hours.5.What will the man do soon?A.Get to the station.B.Buy a mobile phone.C.Board a plane.第二节(共15小题:每小题1.5分,满分22.5分)听下面5段对话或独白。
每段对话或独白后有几个小题,从题中所给的A.B.C 三个选项中选出最佳选项,并标在试卷的相应位置。
听每段对话或独白前,你将有时间。
阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。
每段对话或独白读两遍。
听第6段材料,回答6至7题。
6.What tickets does the woman still have?A.The 40-dollar ones.B.The 45-dollar ones.C.The 50-dollar ones.7.When will the box office close?A.At 7:00 pm.B.At 7:30 pm.C.At 8:00 pm.听第7段材料,回答8至9题。
安徽省桐城中学2015-2016学年高二英语下学期第一次月考试题
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桐城中学高二年级月考英语试题第I 卷第一部分听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话。
每段对话后有一个小题, 从题中所给的A、B、C三个选项中选出最佳选项, 并标在试卷的相应位置。
听完每段对话后, 你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1.Where does the conversation take place?A. On a train.B. On a plane.C. On a bus.2.Who cut the woman’s hair?A. She herself.B.A hairdresser.C. Her friend.3.Why didn’t the teacher see Roger at the practice?A. Roger was absent.B. Roger was late.C. Many people stood around him.4.What does the man ask the woman to do?A. To come a little bit late.B. To do her homework.C. To attend a birthday party.5.When will the supermarke t be shut?A. At five.B. At half past five.C. At fifteen to six. 第二节 ( 共15小题;每小题1. 5分, 满分22. 5分 )听下面5段对话或独白。
每段对话或独白后有几个小题, 从题中所给的A、B、C三个选项中选出最佳选项, 并标在试卷的相应位置。
听每段对话或独白前, 你将有时间阅读各个小题, 每小题5秒钟;听完后, 各小题将给出5秒钟的作答时间。
每段对话或独白读两遍。
听第6段材料,回答第6至7题。
2015-2016学年安徽省安庆市桐城中学高二(下)第三次月考数学试卷(理科)(解析版)
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2015-2016学年安徽省安庆市桐城中学高二(下)第三次月考数学试卷(理科)一、选择题1.(5分)由曲线y=x2,y=x3围成的封闭图形面积为()A.B.C.D.2.(5分)数列{a n}满足a1=,a n+1=1﹣,则a2016等于()A.B.﹣1 C.2 D.33.(5分)从4名男生和3名女生中选出4人参加某个座谈会,若这4人中必须既有男生又有女生,则不同的选法共有()A.140种B.120种C.35种D.34种4.(5分)10张奖券中只有3张有奖,5个人购买,每人1张,至少有1人中奖的概率是()A.B.C.D.5.(5分)已知P(B|A)=,P(A)=,P(B)=,则P(AB)=()A.B.C.D.6.(5分)在由数字1,2,3,4,5组成的所有没有重复数字的5位数中,大于23145且小于43521的数共有()A.56个B.57个C.58个D.60个7.(5分)将标号为1,2,3,4,5,6的6张卡片放入3个不同的信封中,若每个信封放2张,其中标号为1,2的卡片放入同一信封,则不同的方法共有()A.12种B.18种C.36种D.54种8.(5分)已知的展开式中第三项与第五项的系数之比为﹣,其中i2=﹣1,则展开式中常数项是()A.﹣45i B.45i C.﹣45 D.459.(5分)已知随机变量X的分布列为,则P(2<X≤4)=()A. B. C. D.10.(5分)(1﹣x)4(1﹣)3的展开式x2的系数是()A.﹣6 B.﹣3 C.0 D.311.(5分)在正方体上任选3个顶点连成三角形,则所得的三角形是直角非等腰三角形的概率为()A.B.C.D.12.(5分)现安排甲、乙、丙、丁、戊5名同学参加上海世博会志愿者服务活动,每人从事翻译、导游、礼仪、司机四项工作之一,每项工作至少有一人参加.甲、乙不会开车但能从事其他三项工作,丙丁戊都能胜任四项工作,则不同安排方案的种数是()A.152 B.126 C.90 D.54二、填空题(本大题共4小题,每小题5分,共20分)13.(5分)设a∈Z,且0≤a≤13,若512015+a能被13整除,则a=.14.(5分)如图,一个地区分为5个行政区域,现给地图着色,要求相邻区域不得使用同一颜色.现有4种颜色可供选择,则不同的着色方法共有种.(以数字作答)15.(5分)的展开式的常数项为.16.(5分)四个不同的小球放入编号为1,2,3,4的四个盒子中,则恰有一个空盒的放法共有种(用数字作答).三、解答题(本大题共6小题,共70分)解答应写出文字说明、证明过程或演算步骤17.(10分)数列{a n}的前n项和为S n,已知(1)写出S n与S n的递推关系式(n≥2),并求出S2,S3的值;﹣1(2)求S n关于n的表达式.18.(12分)已知f(x)=(2x﹣3)n展开式的二项式系数和为64,且(2x﹣3)n=a+a1(x﹣1)+a2(x﹣1)2+…+a n(x﹣1)n.(1)求a2的值;(用数字作答)(2)求|a0|+|a1|+|a2|+|a3|+…|a n|的值.(用数字作答)19.(12分)在6件产品中有2件次品,连续抽3次,每次抽1件,求:(1)不放回抽样时,抽到次品数ξ的分布列;(2)放回抽样时,抽到次品数η的分布列.20.(12分)甲、乙等五名深圳大运会志愿者被随机地分到A,B,C,D四个不同的岗位服务,每个岗位至少有一名志愿者.(Ⅰ)求甲、乙两人同时参加A岗位服务的概率;(Ⅱ)设随机变量ξ为这五名志愿者中参加A岗位服务的人数,求ξ的分布列.21.(12分)已知函数.(1)若函数f(x)在(0,+∞)上为单调增函数,求a的取值范围;(2)设m,n∈R,且m≠n,求证.22.(12分)设f(x)=(x+1)ln(x+1).(1)求f(x)的最小值;(2)若对任意的x≥0,都有f(x)≥ax成立,求实数a的取值范围.2015-2016学年安徽省安庆市桐城中学高二(下)第三次月考数学试卷(理科)参考答案与试题解析一、选择题1.(5分)(2010•山东)由曲线y=x2,y=x3围成的封闭图形面积为()A.B.C.D.【分析】要求曲线y=x2,y=x3围成的封闭图形面积,根据定积分的几何意义,只要求∫01(x2﹣x3)dx即可.【解答】解:由题意得,两曲线的交点坐标是(1,1),(0,0)故积分区间是[0,1]所求封闭图形的面积为∫01(x2﹣x3)dx═,故选A.【点评】本题考查定积分的基础知识,由定积分求曲线围成封闭图形的面积.2.(5分)(2016春•安阳校级月考)数列{a n}满足a1=,a n+1=1﹣,则a2016等于()A.B.﹣1 C.2 D.3=a n.即可得出.【分析】利用数列递推关系可得:a n+3【解答】解:∵数列{a n}满足a1=,a n+1=1﹣,∴a2=1﹣2=﹣1,a3=1﹣=2,a4=1﹣=.….∴a n=a n.+3∴a2016=a3×671+3=a3=2.故选:C.【点评】本题考查了数列的递推关系、数列的周期性,考查了推理能力与计算能力,属于中档题.3.(5分)(2004•江苏)从4名男生和3名女生中选出4人参加某个座谈会,若这4人中必须既有男生又有女生,则不同的选法共有()A.140种B.120种C.35种D.34种【分析】从7个人中选4人共C74种选法,本题不可能只有女生这种情况,去掉不合题意的只有男生的选法C44就可得有既有男生,又有女生的选法.【解答】解:∵7人中任选4人共C74种选法,去掉只有男生的选法C44,就可得有既有男生,又有女生的选法C74﹣C44=34.故选D.【点评】排列与组合问题要区分开,若题目要求元素的顺序则是排列问题,排列问题要做到不重不漏,有些题目带有一定的约束条件,解题时要先考虑有限制条件的元素.4.(5分)(2005•山东)10张奖券中只有3张有奖,5个人购买,每人1张,至少有1人中奖的概率是()A.B.C.D.【分析】由题意知本题是一个古典概型,试验发生的总事件数是从10张奖券中抽5张共有C105种方法,至少有1人中奖的对立事件是没有人中奖,也就是从7张没有奖的中抽5张,共有C75.【解答】解:由题意知本题是一个古典概型,∵试验发生的总事件数是从10张奖券中抽5张共有C105种方法,至少有1人中奖的对立事件是没有人中奖,也就是从7张没有奖的中抽5张,共有C75,∴由对立事件的公式得到P=1﹣=1﹣=,故选D.【点评】本题主要考查古典概型和对立事件,正难则反是解题是要时刻注意的,我们尽量用简单的方法来解题,这样可以避免一些繁琐的运算,使得题目看起来更加清楚明了.5.(5分)(2016春•桐城市校级月考)已知P(B|A)=,P(A)=,P(B)=,则P(AB)=()A.B.C.D.【分析】由条件概率的计算公式,可得P(AB)=P(A)×P(B|A),即可得出结论.【解答】解:由条件概率的计算公式,可得P(AB)=P(A)×P(B|A)==,故选D.【点评】本题考查条件概率,考查学生的计算能力,比较基础.6.(5分)(2004•黑龙江)在由数字1,2,3,4,5组成的所有没有重复数字的5位数中,大于23145且小于43521的数共有()A.56个B.57个C.58个D.60个【分析】根据题意,按从首位依次向后,各位数字从小到大的顺序分析,可得大于23145且小于43521的数有7种情况,依次求得其情况数目,进而由加法原理,计算可得答案.【解答】解:根据题意,大于23145且小于43521的数有以下几种情况,①前三位为231,有1个,即23154,②前三位为234、235,有2×A22=4个,③前两位是24、25,有2×A33=12个,④首位是3,有A44=24个,⑤前两位是41、42,有2×A33=12个,⑥前三位为431、432,有2×A22=4个,⑦前三位为435,有1个,即43512;综合可得,共有1+4+12+24+12+4+1=58个,故选C.【点评】本题考查排列的应用,但涉及数字大小的分类讨论问题,注意按从首位依次向后,数字从小到大,或从大到小的顺序分析.7.(5分)(2010•大纲版Ⅱ)将标号为1,2,3,4,5,6的6张卡片放入3个不同的信封中,若每个信封放2张,其中标号为1,2的卡片放入同一信封,则不同的方法共有()A.12种B.18种C.36种D.54种【分析】本题是一个分步计数问题,首先从3个信封中选一个放1,2有3种不同的选法,再从剩下的4个数中选两个放一个信封有C42,余下放入最后一个信封,根据分步计数原理得到结果.【解答】解:由题意知,本题是一个分步计数问题,∵先从3个信封中选一个放1,2,有=3种不同的选法;根据分组公式,其他四封信放入两个信封,每个信封两个有=6种放法,∴共有3×6×1=18.故选:B.【点评】本题考查分步计数原理,考查平均分组问题,是一个易错题,解题的关键是注意到第二步从剩下的4个数中选两个放到一个信封中,这里包含两个步骤,先平均分组,再排列.8.(5分)(2006•山东)已知的展开式中第三项与第五项的系数之比为﹣,其中i2=﹣1,则展开式中常数项是()A.﹣45i B.45i C.﹣45 D.45【分析】利用二项展开式的通项公式求出展开式中第三项与第五项的系数,列出方程求出n;利用二项展开式的通项公式求出第r+1项,令x的指数为0求出常数项.【解答】解:第三项的系数为﹣C n2,第五项的系数为C n4,由第三项与第五项的系数之比为﹣可得n=10,则=,令40﹣5r=0,解得r=8,故所求的常数项为(﹣i)8C108=45,故选D.【点评】本题考查二项展开式的通项公式是解决二项展开式的特定项问题的工具.9.(5分)(2016春•桐城市校级月考)已知随机变量X的分布列为,则P(2<X≤4)=()A. B. C. D.【分析】利用离散型随机变量分布列的概率之和为1,求出a的值,由此能求出P(2<X≤4)的值.【解答】解:∵随机变量X的分布列为,∴==a[]=a(1﹣)=1,解得a=,∴P(2<X≤4)=P(X=3)+P(X=4)==.故选:C.【点评】本题考查概率的求法,是基础题,解题时要认真审题,注意离散型随机变量分布列的概率之和为1的性质的合理运用.10.(5分)(2010•大纲版Ⅰ)(1﹣x)4(1﹣)3的展开式x2的系数是()A.﹣6 B.﹣3 C.0 D.3【分析】列举(1﹣x)4与可以出现x2的情况,通过二项式定理得到展开式x2的系数.【解答】解:将看作两部分与相乘,则出现x2的情况有:①m=1,n=2;②m=2,n=0;系数分别为:①=﹣12;②=6;x2的系数是﹣12+6=﹣6故选A【点评】本小题主要考查了考生对二项式定理的掌握情况,尤其是展开式的通项公式的灵活应用,以及能否区分展开式中项的系数与其二项式系数,同时也考查了考生的一些基本运算能力.11.(5分)(2006•安徽)在正方体上任选3个顶点连成三角形,则所得的三角形是直角非等腰三角形的概率为()A.B.C.D.【分析】由题意知本题是一个古典概型,总事件数是在正方体上任选3个顶点连成三角形可得个三角形,符合条件的要得直角非等腰三角形,则每条正方体的边对应两个满足题意的三角形,即正方体的一边与过此点的一条面对角线,共有24个,由公式得到结果.【解答】解:在正方体上任选3个顶点连成三角形可得个三角形,要得直角非等腰三角形,则每条正方体的边对应两个满足题意的三角形(即正方体的一边与过此点的一条面对角线),如下图:共有24个,得P==,故选C.【点评】本题是一个古典概型,用排列组合数来求出事件的个数,排列组合问题在几何中的应用,在计算时要求做到,兼顾所有的条件,先排约束条件多的元素,做的不重不漏,注意实际问题本身的限制条件.12.(5分)(2010•湖北)现安排甲、乙、丙、丁、戊5名同学参加上海世博会志愿者服务活动,每人从事翻译、导游、礼仪、司机四项工作之一,每项工作至少有一人参加.甲、乙不会开车但能从事其他三项工作,丙丁戊都能胜任四项工作,则不同安排方案的种数是()A.152 B.126 C.90 D.54【分析】根据题意,按甲乙的分工情况不同分两种情况讨论,①甲乙一起参加除了开车的三项工作之一,②甲乙不同时参加一项工作;分别由排列、组合公式计算其情况数目,进而由分类计数的加法公式,计算可得答案.【解答】解:根据题意,分情况讨论,①甲乙一起参加除了开车的三项工作之一:C31×A33=18种;②甲乙不同时参加一项工作,进而又分为2种小情况;1°丙、丁、戊三人中有两人承担同一份工作,有A32×C32×A22=3×2×3×2=36种;2°甲或乙与丙、丁、戊三人中的一人承担同一份工作:A32×C31×C21×A22=72种;由分类计数原理,可得共有18+36+72=126种,故选B.【点评】本题考查排列、组合的综合运用,注意要根据题意,进而按一定顺序分情况讨论.二、填空题(本大题共4小题,每小题5分,共20分)13.(5分)(2016春•桐城市校级月考)设a∈Z,且0≤a≤13,若512015+a能被13整除,则a=1.【分析】根据512015+a=(52﹣1)2015+a,把(52﹣1)2015+a 按照二项式定理展开,结合题意可得﹣1+a能被13整除,由此求得a的范围.【解答】解:∵512015+a=(52﹣1)2015+a=﹣C20150•522015+C20151•522014﹣C20152•522013+…﹣C20152014•521﹣1+a能被13整除,0≤a<13,故﹣1+a=﹣1+a能被13整除,故a=1,故答案为:1.【点评】本题主要考查二项式定理的应用,二项式展开式的通项公式,体现了转化的数学思想,属于中档题.14.(5分)(2003•全国)如图,一个地区分为5个行政区域,现给地图着色,要求相邻区域不得使用同一颜色.现有4种颜色可供选择,则不同的着色方法共有72种.(以数字作答)【分析】分类型,选3种颜色时,就是②④同色,③⑤同色;4种颜色全用,只能②④或③⑤用一种颜色,其它不相同,求解即可.【解答】解:由题意,选用3种颜色时:涂色方法C43•A33=24种4色全用时涂色方法:C21•A44=48种所以不同的着色方法共有72种.故答案为:72【点评】本题考查组合及组合数公式,考查分类讨论思想,避免重复和遗漏情况,是中档题.15.(5分)(2016春•桐城市校级月考)的展开式的常数项为88.【分析】令r=0,3,即可求出展开式的常数项=C5r•(x+)r•(﹣2)5﹣r,【解答】解:的展开式的通项公式为T r+1=C r k•x(x+)r展开式的通项公式为T k+1当r﹣k=0时,得到k=r,当r=0时,k=0,此时C50•(x+)0•(﹣2)5=﹣32,当r=3时,k=2,此时常数项为=C53•(﹣2)2,C32=120,的展开式的常数项为120﹣32=88,故答案为:88.【点评】本题主要考查二项式定理的应用,二项展开式的通项公式,求展开式中某项的系数,属于中档题.16.(5分)(1995•全国)四个不同的小球放入编号为1,2,3,4的四个盒子中,则恰有一个空盒的放法共有144种(用数字作答).【分析】由题意知需要先选两个元素作为一组再排列,恰有一个盒子中有2个小球,从4个小球中选两个作为一个元素,同另外两个元素在三个位置全排列,根据分步计数原理得到结果.【解答】解:四个不同的小球放入编号为1,2,3,4的四个盒子中,恰有一个空盒,说明恰有一个盒子中有2个小球,从4个小球中选两个作为一个元素,同另外两个元素在三个位置全排列故共有C42A43=144种不同的放法.故答案为144.【点评】本题考查分步计数原理,是一个基础题,解题的过程中注意这种有条件的排列要分两步走,先选元素再排列.三、解答题(本大题共6小题,共70分)解答应写出文字说明、证明过程或演算步骤17.(10分)(2016春•桐城市校级月考)数列{a n}的前n项和为S n,已知的递推关系式(n≥2),并求出S2,S3的值;(1)写出S n与S n﹣1(2)求S n关于n的表达式.【分析】(1)由(n≥2)得:,可得,对n≥2成立.(2)利用“累加求和”方法即可得出.【解答】解:(1)由(n≥2)得:,即,所以,对n≥2成立.由递推公式可先得出;(2)猜测,由,,…,,相加得:,又,所以,当n=1时,也成立.【点评】本题考查了数列递推关系、“累加求和”方法,考查了推理能力与计算能力,属于中档题.18.(12分)(2016春•桐城市校级月考)已知f(x)=(2x﹣3)n展开式的二项式系数和为64,且(2x﹣3)n=a0+a1(x﹣1)+a2(x﹣1)2+…+a n(x﹣1)n.(1)求a2的值;(用数字作答)(2)求|a0|+|a1|+|a2|+|a3|+…|a n|的值.(用数字作答)【分析】(1)根据(2x﹣3)n展开式的二项式系数和求出n的值,化(2x﹣3)6=[﹣1+2(x﹣1)]6,求出a的值;2(2)在(2x﹣3)6=[﹣1+2(x﹣1)]6=a0+a1(x﹣1)+a2(x﹣1)2+…+a9(x﹣1)6中,令x=0即可求出|a|+|a1|+|a2|+|a3|+…|a n|的值.【解答】解:(1)f(x)=(2x﹣3)n展开式的二项式系数和为64,∴2n=64,解得n=6;∵(2x﹣3)6=[﹣1+2(x﹣1)]6=a0+a1(x﹣1)+a2(x﹣1)2+…+a9(x﹣1)6,∴a2=•(﹣1)4•22=60;(2)在(2x﹣3)6=a0+a1(x﹣1)+a2(x﹣1)2+…+a6(x﹣1)6中,即[﹣1+2(x﹣1)]6=a0+a1(x﹣1)+a2(x﹣1)2+…+a9(x﹣1)6,令x=0,可得|a0|+|a1|+|a2|+|a3|+…|a n|=(﹣1﹣2)6=729.【点评】本题考查了二项式定理以及二项展开式的通项公式应用问题,是基础题.19.(12分)(2016春•桐城市校级月考)在6件产品中有2件次品,连续抽3次,每次抽1件,求:(1)不放回抽样时,抽到次品数ξ的分布列;(2)放回抽样时,抽到次品数η的分布列.【分析】(1)由题意知ξ的可能取值为0,1,2,分别求出相应的概率,由此能求出ξ的分布列.(2)由题意知η的可能取值为0,1,2,3,且~B(3,),由此能求出η的分布列.【解答】解:(1)由题意知ξ的可能取值为0,1,2,P(ξ=0)==,P(ξ=1)==,P(ξ=2)==,∴ξ的分布列为:(2)由题意知η的可能取值为0,1,2,3,且~B(3,),P(η=0)=()3=,P(η=1)==,P(η=2)==,P(η=3)=()3=,∴η的分布列为:【点评】本题考查离散型随机变量的分布列的求法,考查推理论证能力、运算求解能力,考查等价转化思想,是中档题.20.(12分)(2011•盐城模拟)甲、乙等五名深圳大运会志愿者被随机地分到A,B,C,D四个不同的岗位服务,每个岗位至少有一名志愿者.(Ⅰ)求甲、乙两人同时参加A岗位服务的概率;(Ⅱ)设随机变量ξ为这五名志愿者中参加A岗位服务的人数,求ξ的分布列.【分析】(Ⅰ)根据四个不同的岗位服务,每个岗位至少有一名志愿者,故甲、乙两人同时参加A岗位服务时,其余3人被分到B,C,D岗位,由此可求概率;(Ⅱ)随机变量ξ可能取的值为1,2,事件“ξ=2”是指有两人同时参加A岗位服务,由此可得ξ的分布列.【解答】解:(Ⅰ)记甲、乙两人同时参加A岗位服务为事件E A,那么,即甲、乙两人同时参加A岗位服务的概率是…(5分)(Ⅱ)随机变量ξ可能取的值为1,2,事件“ξ=2”是指有两人同时参加A岗位服务,则,所以,即ξ的分布列如下表所示…(10分)【点评】本题考查等可能事件的概率,考查离散型随机变量的概率与分布列,属于中档题.21.(12分)(2012•西山区校级模拟)已知函数.(1)若函数f(x)在(0,+∞)上为单调增函数,求a的取值范围;(2)设m,n∈R,且m≠n,求证.【分析】(1)根据f(x)的解析式求出f(x)的导函数,通分后根据函数f(x)在(0,+∞)上为单调增函数,得到分子大于0恒成立,解出2a﹣2小于等于一个函数关系式,利用基本不等式求出这个函数的最小值,列出关于a的不等式,求出不等式的解集即可得到a的取值范围;(2)把所证的式子利用对数的运算法则及不等式的基本性质变形,即要证ln﹣>0,根据(1)得到h(x)在x大于等于1时单调递增,且大于1,利用函数的单调性可得证.【解答】解:(1)f′(x)=﹣==,因为f(x)在(0,+∞)上为单调增函数,所以f′(x)≥0在(0,+∞)上恒成立即x2+(2﹣2a)x+1≥0在(0,+∞)上恒成立,当x∈(0,+∞)时,由x2+(2﹣2a)x+1≥0,得:2a﹣2≤x+,设g(x)=x+,x∈(0,+∞),则g(x)=x+≥2=2,当且仅当x=即x=1时,g(x)有最小值2,所以2a﹣2≤2,解得a≤2,所以a的取值范围是(﹣∞,2];(2)要证,只需证<,即ln>,即ln﹣>0,设h(x)=lnx﹣,由(1)知h(x)在(1,+∞)上是单调增函数,又>1,所以h()>h(1)=0,即ln﹣>0成立,得到.【点评】此题考查学生会利用导函数的正负确定函数的单调区间,掌握不等式恒成立时所满足的条件,会利用基本不等式求函数的最小值,是一道中档题.在证明第(2)时注意利用第(1)问中的结论.22.(12分)(2016春•桐城市校级月考)设f(x)=(x+1)ln(x+1).(1)求f(x)的最小值;(2)若对任意的x≥0,都有f(x)≥ax成立,求实数a的取值范围.【分析】(1)由已知得x>﹣1,f′(x)=ln(x+1)+1,x∈(﹣1,﹣1)时,f′(x)<0;当x∈(,+∞)时,f′(x)>0.由此求出x=﹣1时,[f(x)]min=f (),由此能求出结果.(2)令g(x)=(x+1)ln(x+1)﹣ax,对函数g(x)求导数:g′(x)=ln(x+1)+1﹣a令g′(x)=0,得x=e a﹣1﹣1,由此根据a≤1,a>1进行分类讨论,利用导数性质能求出a的取值范围.【解答】解:(1)∵f(x)=(x+1)ln(x+1),∴x+1>0,解得x>﹣1,f′(x)=ln(x+1)+1,令f′(x)=0,得x+1=,即x=,当x∈(﹣1,﹣1)时,f′(x)<0;当x∈(,+∞)时,f′(x)>0.∴x=﹣1时,[f(x)]min=f()==﹣.(2)令g(x)=(x+1)ln(x+1)﹣ax,对函数g(x)求导数:g′(x)=ln(x+1)+1﹣a令g′(x)=0,解得x=e a﹣1﹣1,(i)当a≤1时,对所有x>0,g′(x)>0,所以g(x)在[0,+∞)上是增函数,又g(0)=0,所以对x≥0,都有g(x)≥g(0),即当a≤1时,对于所有x≥0,都有f(x)≥ax.(ii)当a>1时,对于0<x<e a﹣1﹣1,g′(x)<0,所以g(x)在(0,e a﹣1﹣1)是减函数,又g(0)=0,所以对0<x<e a﹣1﹣1,都有g(x)<g(0),即当a>1时,不是对所有的x≥0,都有f(x)≥ax成立.综上,a的取值范围是(﹣∞,1].【点评】本题考查函数的最小值的求法,考查实数的取值范围的求法,考查导数的性质的应用,考查推理论证能力、运算求解能力,考查转化化归思想、分类讨论思想,是中档题.。
高二英语下学期第三次月考试题高二全册英语试题2
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得夺市安庆阳光实验学校高二英语下学期第三次月考试题本卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。
共150分。
时间:120分钟。
第Ⅰ卷(选择题)第一部分:听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话。
每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1.What's the time now?A.10:30. B.9:30. C.11:30.2.What did the man do last night?A.He joined the Party. B.He took part in a party. C.He drank a lot.3.How long has the man been feeling ill?A.For two days. B.For one day only. C.For three days.4.Why doesn't the man enjoy his salad?A.Because it is not fresh. B.Because it is tasteless. C.Because it is too salty.5.What does the woman mean?A.They haven't received Johnny's letters for a long time.B.They haven't heard Johnny's voice for a long time.C.They haven't known Johnny before.第二节(共15小题;每小题1.5分,满分22.5分)听下面5段对话或独白。
每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项。
安徽省安庆市桐城第二中学高二英语月考试卷含解析
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安徽省安庆市桐城第二中学高二英语月考试卷含解析一、选择题1. —What did you say to your sister? I saw her crying in the room.— It _________ my fault. I just said hello to her when I met her, nothing else.A. must have beenB. can’t have beenC. oughBtn’t to beD. should have been参考答案:2. Walter offered us a lift when he was leaving the office, but our work ______, we refused his offer.A. not finishedB. had not been finishedC. not finishingD. not having finished参考答案:A【详解】考查独立主格结构。
句意:当Walter离开办公室的时候,主动让我们搭便车,但是因为工作没有完成,我们拒绝了他的帮助。
连词but引导两个并列句中Walter offered us a lift when he was leaving the office 和we refused his offer. 说明“our work __”不能是完整的句子;名词短语our work与动词finish构成被动关系,而CD两项都表示主动。
B项与our work构成了一个完整的句子our work had not been finished,不符合本句的句子结构。
只能使用独立主格结构our work not finished。
故A项正确。
3. —Why not talk with your parents about your willingness to attend Peking University Summer Camp?—I tried __________to get them to listen to me.A. in timeB. in vainC. in needD. in case参考答案:B4. A powerful earthquake struck Haiti’s capital, ____ tens of thousands homeless and buried in ruins.A. leftB. to leaveC. being leftD. leaving参考答案:D5. The survey ____ in our school last month shows that about three percent of the students are addicted to the Internet games.A. conductedB. was conductedC. conductingD. to be conducted参考答案:A6. —Shall we go to the lecture about the risk of brain cancer from mobile phone use?—________? It is closely related to our health.A. So whatB. Why notC. What forD. How come参考答案:B7. The chairman found _____ necessary to invite Professor Smith to speak at the meeting.A. thatB. itC. himD. this参考答案:B8. In my opinion, shouldn’t be any doubt that China will become one of the most powerful countries in the near future.A.this B.that C.it D.there参考答案:D略9. The film we saw last night is called The Bridges of Madison County, which is _____ a novel by Robert James.A. based onB. basing onC. based atD. basing at参考答案:A试题分析:考查动词短语。
安徽省安庆市桐城中学高三英语月考试题含解析
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安徽省安庆市桐城中学高三英语月考试题含解析一、选择题1. You will find _______ great benefit a computer will be of each time you use it to help you work..A. thatB. whetherC. howD. what参考答案:D略2. It is known to all that gunpowder is _______ Chinese invention, as is the compass, _______instrument that you use for finding directions.A. a; theB. 不填; anC. a; anD.不填; the参考答案:C3. Mr. Wang told us that he would devote all the time he could spend _______ his oral English before going abroad.A. improveB. to improveC. improvingD. to improving参考答案:D4. Anyone, whether he is an official or a bus driver, should be respected.A. especiallyB. naturallyC. equallyD. normally参考答案:C5. The pilot lost connection with the military base, ___the plane crashed in the desert.A. by means of whichB. in front of whichC. in case of whichD. as a result of which参考答案:D6. He slowed the bleeding by _______ pressure to the wounds until the ambulance arrived.A. assessingB. approvingC. applyingD. appointing 参考答案:C7. Loneliness is a feeling ______ by many parents whose children have gone to faraway places for education or work.A. experienceB. to experienceC. experiencedD. experiencing参考答案:C8. _____ in 2011, the Beijing-Shanghai high-speed railway has benefited Qufu a lot.A. To completeB. CompletingC. Having completedpleted参考答案:D9. Peter was so excited _______ he received an invitation from his friend to visitChongqing.A. whereB. thatC. whyD. when参考答案:D10. When the audience heard the alarm, they all hurried to they thought was an emergency exit door.A.what B.which C.where D.who参考答案:A32. The old tower must be saved, ___ the cost.A.HoweverB. whateverC. whicheverD. wherever参考答案:B略12. Acting is very ________— you have got to really push yourself if you want to succeed.A. complexB. competitiveC. concreteD. considerate参考答案:B13. _____ the past year as an exchange student in Hong Kong, Linda appears more mature than those of herage.A. SpendingB. SpentC. Having spentD. To spend参考答案:C14. The traffic problems we are looking forward to seeing _________ should have attracted thegovernment’s attention.A. solvingB. solveC. solvedD. to solve参考答案:C略15. The city of Vancouver in the Province of British Columbia also has superb scenery, a beautiful harbour, and all the comforts of modern life and international cuisine,_________ being close to some very popular ski areas.A. in response toB. in addition toC. in terms ofD. in preference to参考答案:B【分析】考查短语辨析。
高二英语第三月考试题
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高二英语第三月考试题第一部分:听力(共两节,满分30分第一节:(共5小题,每小题1.5分,满分7.5分)听下面5段对话。
每段对话后有一个小题,从题中所给的ABC三个选项中选出最佳选项,并标在试卷宗的相应位置。
听完每段对话后,你都有10秒钟的时刻来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1.What kind of music does the woman like best?A. Pop music.B. Light musicC. Classic music.2.What is happening to the sea?A.It has disappeared.B. It is being polluted.C. It is getting cleaner.3.To whom does the woman probably speaking?A. A salesman.B. A manager.C. A repairman.4.Who is the man?A. A book-seller.B. A writer.C. A publisher.5.Where are the English teacher meeting?A.In the teacher’s office.B. In the reading-room.C. In the reading-room.第二节:(共15小题,每小题1.5分,满分22.5分)听下面5段对话或独白。
每段对话或独白后有几个小题,从题中所给的ABC三个选项中选出最佳选项,并标在试卷的相应位置,听每段对话或独白前,你将有时刻阅读各小题,每小题5秒钟,听完后,各小题将给出5秒钟的作答时刻。
每段对话或独白读两遍。
听第6段材料,回答第6至8题。
6.What does the man want to do?A.To have his shoes mended.B. To buy a pair of new shoes.C. To shopping in a supermarket.7.How far is the supermarket?A.Two blocks away.B. Five blocks away.C. Six blocks away.8.How will the man go to the place?A. By busB. On footC. In his car.听第7段材料,回答第9至11题。
安徽省桐城高二英语下学期第三次月考试题
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桐城中学高二年级第三次月考英语试题第I 卷第一部分听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话。
每段对话后有一个小题, 从题中所给的A、B、C三个选项中选出最佳选项, 并标在试卷的相应位置。
1. What are the two speakers doing?A. Singing a song.B. Riding a bike.C. Dancing.2. What can we know about the meat?A. Its price has risen.B.It is cheaper in other shops.C.It is as expensive as fish.3. How will they cross the river?A. By ferry.B. By car.C. By plane.4. How many classes does the woman NOT like?A. Five.B. Ten.C. Nine5. How old is Jane now?A. 27B. 22C. 29第二节(共15小题:每小题1.5分,满分22.5分)听下面5段对话。
每段对话后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听第6段材料,回答第6至8题。
6. How long was the woman late?A. For an hour.B. For half an hour.C. For an hour and a half.7. How will the woman go to the restaurant?A. By bus.B. By taxi.C. On foot.8. What will the woman find near the restaurant?A. A drugstore.B. A supermarket.C. A coffee shop.听第7段材料,回答第9至11题。
安徽省桐城市第八中学2015_2016学年高二英语下学期第二次月考试题
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桐城八中2015-2016学年第二学期第二次阶段考试高二英语试卷(共150分,考试时间120分钟)第一部分听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听对话。
选择正确选项。
1. What does the man mean? .A. He doesn't know the schoo1.B. There is no schoo1 here.C. The schoo1 is nearby.2. How much wil1 the man pay for the oranges?A.60 cents.B. 120 cents.C. 150 cents.3. What can we learn from this conversation?A. The woman agrees to go on a picnic this Saturday.B. The woman does not enjoy going on a picnic at al1.C. The woman thinks the weather won't be good for a picnic.4. Why is the man proud of his daughter?A. She looks attractive.B. She has a nice character.C. She is successful in her work.5. What does Jim do?A. He is a teacher.B. He is a student.C. He is a writer. 第二节(共15小题;每小题1.5分,满分22.5分)听第6段材料,回答第6至7题。
6. Why didn't Peter go to the concert?A. Because he was not interested in it.B. Because he failed to get a ticket.C. Because he was not free then.7. How did the man feel about missing the concert?A. He felt it a pity.B. He didn't care.C. He regretted it. 听第7段材料,回答8至9题。
高二英语下学期第三次(5月月考)试题高二全册英语试题
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得夺市安庆阳光实验学校第二学期第三次调研考试高二英语试题第Ⅰ卷第一部分听力(共两节,满分30 分)做题时,现将答案标在试卷上,录音内容结束后,你将有两分钟的时间将试卷上的答案转涂到答题卡上。
第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话,每段对话后有一个小题。
从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
例:How much is the shirt?A. £19. 15B. £9. 18C. £9. 15答案是C。
1.What is Mike doing now?A.Eating a hamburger B.Drinking coffee C.Preparing dinner 2.How many copies must the woman make?A.80 B.48 C.503.When is the woman going to have a test?A.This Saturday B.Next Sunday C.This Sunday4.Where is the man now?A.In a suitcase shop B.On a plane C.In a baggage hall5.What did the woman probably do before she arrived home yesterday?A.She made a call to her friend B.She looked for her car keys C.She went shopping第二节(共15小题)听下面5段对话或独自。
每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听每段对话或独白前,将有时间阅读各个小题,每小题5秒钟。
高二英语下学期第三次月考试题高二全册英语试题_02
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得夺市安庆阳光实验学校南康区高二英语下学期第三次月考试题第一部分听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话。
每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项并标在试卷的相应位置。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1. What is the man’s advice for the woman?A. Having her ears checked.B. Listening carefully to Jack.C. Being calm and patient.2. What does the man mean?A. Doctor Peterson won’t see anyone tomorrow.B. Doctor Peterson is quite busy tomorrow.C. Doctor Peterson is busy all day today.3. What does the woman think of Angelina’s husband?A. Quiet.B. Impolite.C. Proud.4. Who is Mary?A. The speakers’ colleague.B. The woman’s classmate.C. The man’s classmate.5. What are the speakers talking about?A. Painting pictures.B. Taking photographsC. Getting close to nature.第二节(共15小题;每小题1.5分,满分22.5分)听下面5段对话或独白。
每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。
高二英语6月(第三次)月考试题高二全册英语试题
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得夺市安庆阳光实验学校2014~2015学年度第二学期高二第三次月考英语试卷第I卷(选择题)第一部分听力(共两节,满分30分)做题时,先将答案标在试卷上。
录音内容结束后,你将有两分钟的时间将试卷上的答案转涂到答题卡上。
第一节(共5小题;每小题1. 5分,满分7. 5分)听下面5段对话。
每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听完每段对话后,你都有10秒钟的时间来回答有关小题并阅读下一小题。
每段对话仅读一遍。
1. What is the man most probably?A. A doctor.B. A teacher.C. A writer.2. How much will the woman pay?A. $5.00.B. $ 4.90.C. $ 4.50.3. What are the speakers doing?A. Watching a movie.B. Enjoying a concert.C. Waiting to buy tickets.4. Where is the man most probably right now?A. In a shop.B. In his office.C. At McDonald’s.5. What item do the speakers still need?A. A sleeping bag.B. A tent.C. Food.第二节(共15小题;每小题1. 5分,满分22. 5分)听下面5段对话或独白。
每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。
每段对话或独白读两遍。
听第6段材料,回答第6至7题。
6. What does the woman regret?A. Not coming to the ticket office before lunch.B. Not having lunch before coming to the ticket office.C. Not buying her tickets over the phone.7. When will the ticket office close?A. In 45 minutes.B. In two hours.C. In three hours.听第7段材料,回答第8 至 9题。
安徽省桐城中学2015-2016学年高二下学期第三次月考数学(文)试题 含答案
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桐城中学2015-2016年度高二第二学期第三次月考数学试题(文科)注意:本试卷包含Ⅰ、Ⅱ两卷。
第Ⅰ卷为选择题,所有答案必须用2B 铅笔涂在答题卷中相应的位置。
第Ⅱ卷为非选择题,所有答案必须填在答题卷的相应位置.答案写在试卷上均无效,不予记分。
第I 卷(选择题)一、选择题(本大题共12小题,每小题5分,共60分) 1。
设2{|1},{|4},P x x Q x x=<=<则P Q =( )(A ){|12}x x -<< (B ){|31}x x -<<- (C ){|14}x x <<- (D ){|21}x x -<<2.函数22log 2xy x-=+的图像关于( )(A)原点对称 (B )y x =-对称 (C )y 轴对称 (D )y x =对称3。
)(x f 为奇函数,∈x )0.(-∞时,)1()(-=x x x f ,则∈x ),0(+∞时,)(x f 为( ) (A ))1(+-x x (B ))1(+--x x (C))1(+-x x (D))1(-x x4。
以下四个数中的最大者是( )(A )2)2(ln (B ))2ln(ln (C )2ln(D)2ln5。
已知定义域为R 的函数()x f 在区间()+∞,8上为减函数,且函数()8+=x f y 为偶函数,则()(A )()()76f f > (B ) ()()96f f > (C ) ()()107f f > (D) ()()97f f >6。
若方程022=-+ax x在区间[]5.1上有解,则实数a 的取值范围是( )(A )),523(+∞- (B)),1(+∞ (C)⎥⎦⎤⎢⎣⎡-1,523 (D)⎥⎦⎤ ⎝⎛-∞-523, 7。
定义在-+∞⋃∞(,0)(0,)上的奇函数)(x f 在+∞(0,)上为增函数,当0x >时,)(x f 的图像如图所示,则不等式[]()()0x f x f x --<的解集是( ) (A )(,3)(0,3)-∞-⋃ (B )(,3)(3,)-∞-⋃+∞ (C )(3,0)(3,)-⋃+∞ (D)(3,0)(0,3)-⋃8.函数()log (21)(01)x a f x b a a =+->≠,的图象如图所示,则a b ,的关系是( ) (A )101ab -<<<(B )101b a-<<<(C )101ba -<<<- (D)1101ab --<<<9.已知⎩⎨⎧≥-<+-=11,4)13()(x a a x a x a x f x 是R上的减函数,则a 的范围是( ) (A )(0,1) (B )1(0,)3 (C )11[,)73(D)1[,1)710。
安徽省舒城晓天中学2015-2016学年高二下学期第三次月考英语试题 含答案
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学必求其心得,业必贵于专精(时间:120分钟 满分 150)第I 卷(选择题)第一部分 听力 (满分 30分)第一节(共5小题;每小题1。
5分,满分7.5分)听下面5段对话。
每段对话有一个小题,从题中所给的A 、B 、C 三个选项中选出最佳选项,并标在试卷的相应位置。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍.1。
What does the man mean?A 。
He doesn't have anything to do 。
B. He believes the woman is wrong about the time 。
C. Time passes very quickly.2。
What did Paul do this morning ?A 。
He had a history lesson 。
B. He had a chemistry lesson.C. He attended a meeting 。
3. What does the woman mean?A. Jimmy is going to set out tonight.B. Jimmy has not decided on his journey.C 。
There is no need to have a farewell (告别) dinner 。
4。
What does the woman worry about most?A. Bad weather 。
B. Bus strike 。
C 。
Heavy traffic.5。
What did the man say about his camera?A. He enjoyed using his new camera. B 。
He left his camera in his 晓天中学2015~2016学年度第二学期第三次月考 高二年级英语(试题卷) 装 订 线friend’s car。
高二英语下学期3月月考试题高二全册英语试题_2
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得夺市安庆阳光实验学校上学期高二3月月考英语试题时量:120分钟分值:150分第一部分听力(共两节,满分30分)第一节:听下面5段对话。
每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1. What will the woman most probably do?A. Continue working hard.B. Enjoy her family life.C. Have a short break.2. What's the conversation mainly about?A. A performance.B. A subject.C. A person.3. Why does the man ask for leave?A. He's sick.B. He will pick up John.C. He's going to play golf.4. What does the woman say about Bob?A. He is always happy.B. He is hard to deal with.C. He is always complaining.5. How much will the man pay?A. $26. 50.B. $25.C. $22. 50.第二节:听下面5段对话或独白。
每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。
每段对话或独白读两遍。
听下面一段对话,回答第6和第7两个小题。
6. What will the man do first?A. Play golf.B. Have a conference.C. Attend a golf course.7. Why did the man take up golf?A. It might do good to his career.B. It was part of his New York project.C. It could help improve his health.听下面一段对话,回答第8至第10三个小题。
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桐城中学高二年级第三次月考英语试题第I 卷第一部分听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话。
每段对话后有一个小题, 从题中所给的A、B、C三个选项中选出最佳选项, 并标在试卷的相应位置。
1. What are the two speakers doing?A. Singing a song.B. Riding a bike.C. Dancing.2. What can we know about the meat?A. Its price has risen.B.It is cheaper in other shops.C.It is as expensive as fish.3. How will they cross the river?A. By ferry.B. By car.C. By plane.4. How many classes does the woman NOT like?A. Five.B. Ten.C. Nine5. How old is Jane now?A. 27B. 22C. 29第二节(共15小题:每小题1.5分,满分22.5分)听下面5段对话。
每段对话后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听第6段材料,回答第6至8题。
6. How long was the woman late?A. For an hour.B. For half an hour.C. For an hour and a half.7. How will the woman go to the restaurant?A. By bus.B. By taxi.C. On foot.8. What will the woman find near the restaurant?A. A drugstore.B. A supermarket.C. A coffee shop.听第7段材料,回答第9至11题。
9. Why doesn’t the woman dislike her roommate?A. She often makes noises at night.B. She often comes back qu ite late.C. She often forgets to close the door.10. How did the woman’s roommate react to her reminder?A. She responses with rude words.B. She doesn’t say any wordsat all.C. She listens to her words patiently.11. How many times has the woman talked to her roommate?A. At least seven times.B. At least five times.C. At least three times.听第8段材料,回答第12至14题。
12. What will the woman do on Friday?A. To visit her grandparents.B. To attend a ball.C.To have a party.13. How will the man get to Boston?A. By car.B. By plane.C. By train.14. Whether will the man meet the woman on Friday?A. Yes, he will.B. No, he won’t.C. We don’t know.听第9段材料,回答第15至17题。
15. When is the plane leaving?A. At 6:30 p.m..B. At 8:30 p.m..C. At 9:00 p.m..16. Where is the woman leaving for?A. ChinaB. BeijingC. Canada17. What does the woman think of her holidays in China?A. Wonderful.B. Too bad.C. Just so so.听第10段材料,回答第18至20题。
18. Why doesn’t the speaker have an iPad?A. Because his parents don’t allow him to do so.B. Because he doesn’t like to listen to music.C. Because he hasn’t enough money.19. What does the speaker like most with an iPad?A. Go travelling.B. Reading novels.C. Listen to music.20. Who will be most likely to buy an iPad for the speaker?A. Her mother.B. Her grandfather.C. Her grandmother.第二部分阅读理解(共两节, 满分40分)第一节(共15小题;每小题2分,满分30分)ADo you want to get home from work knowing you have made a real difference in someone's life? If yes. don't care about sex or age! Come and join us, then you'll make it!Position: Volunteer Social Care Assistant (No Pay with Free Meals)Place: ManchesterHours: Part TimeWe arc now looking for volunteers to support people with learning disabilities to live active lives! Only 4 days left. Don't miss the chance of lending your warm hands to help othes!Role:You will provide people with learning disabilities with all aspects of their daily lives. You will help them to develop new skills. You will help them to protect their rights and their safety. But your primary concern is to let them know they are valued.Skills and Experience Required:You will have the right values and great listening skills. You will be honest and patient. You will have the ability to drive a car and to communicate in fluent written and spoken English since you'll have to help those people with different learning disabilities. Previous care-related exper ience will be a great advantage for you.21:The text is meant to ______ .A.leave a note B.send an invitationC.present a document D.carry an advertisement22:What does the underlined part mean?A.You'll make others' lives more meaningful with this job.B.You'll arrive home just in time from this job.C.You'll earn a good salary from this job.D.You'll succeed in getting this job.23:The volunteers' primary responsibility is to help people with learning disabilities ______ .A.to get some financial support B.to properly protect themselvesC.to learn some new living skills D.to realize their own importance 24:Which of the following can first be chosen as a volunteer?A.The one who can drive a car. B.The one who has done similar work before.C.The one who has patience to listen to others. D.The one who can use English to communicate.BIn New York, Ma witnessed the Alibaba Group opening on the New York stock exchange with the largest initial public offering (IPO,新股发行) in American history. “Alibaba, the world’s largest Internet commerce company makes China equal to the US in the rapidly increasing global competition for technological innovation (创新) and economic transformation ” commented the South China Morning Post.It has also made Ma China’s richest man with a fortune of around $25 billion (153 billion yuan), reported Reuters.It’s reported that Ma’s rags -to-riches journey is just as spectacular as his Internet empire.Ma failed the national college entrance exams twice before he was finally in Hangzhou Normal University on his third attempt and failed in finding a suitable job several times. Aslo, Mr Ma isa big believer in perseverance, which was proved in his English study experience.However, it was his vision and goals that launched his career.During a short trip to the US as an interpreter in 1995, Ma first ex perienced the Internet. He believed in the Internet’s business potential wh en few other Chinese people did. He started Alibaba in his Hangzhou apartm ent, with 17 friends and $60,000 of funds. At the time, when e-commerce w as unheard of in China, “I called myself a blind man riding on the back of blind tigers,”he once said, according to The Guardian. His unusual ideas earned him the nickname “Crazy Jack Ma”.Indeed, Ma is different. Although he is very thin and about 160cm tall , “Ma is yet animated andforceful, said The Guardian. “He is funny, crea tive, and a compelling (引人注目的) speaker.Ma told Time magazine that he was “old for the Internet”.He started to slow down and looked around. According to The Wall Street Journal, Ma “plans to open a tai chi club with the actor Jet Li, b uild an entrepr eneur (企业家) university in Hangzhou and continue to work on several environmental pr ojects.”25.What made him into e-commerce industry?A. His English learning experience.B. His foresight and ambitions.C. His belief in perseverance.D. His 17 friends and $60,000 funds.26.What does the underlined sentence in Paragraph 5 mean?A. Ma is a blind man riding on a blind tiger.B. Ma had no confidence in his business future.C. Ma knew little about e-commerce.D. Ma had not enough money at that time.27.What’s the personality of Ma Yun according to the passage?A. Funny and competitive.B. Determined and creative.C. Rich and different.D. Attractive and believable.28.What’s the best title of the passage?A. The Development of Alibaba GroupB. Ma Yun’s Personal LifeC. Ma Yun’s Crazy SuccessD. E-commerce in ChinaCAccording to sociologists(社会学家),every modern industrial society has some form of social stratification(阶层).Class,power and status are important in deciding people’s rank in society.Class means a person’s economic position in society.A commonly used classification is lower class,middle class and upper class.While sociologists disagree on how these terms should be exactly defined,they do describe societies like the United States quite well.One study shows that 53% of Americans belong to the lower class,46% the middle class,and 1% the upper class.Interestingly,a surgeon earning $500,000 a year and a bus driver earning $50,000 a year both regard themselves as the middle class!Power refers to the amount of control a person has over other people.Obviously,people in positions of great power (such as governors) exercise(行使)big power,but people who take orders from others have less power.Power and class do not always go hand in hand,however.For example,the governor of a state has great power,but he or she may not belong to a corresponding (相应的)economic class.Generally,however,there is a relationship between power and class.To our knowledge,there aren’t too many people who aren’t millionaires in the U.S.Senate!Status is the honor or respect attached to a person’s position in society. It can also be affected by power and class,but not necessarily so. For example,a university professor may have a high status but not belong to a high social class or have a lot of power over others.29.What can we learn about“the middle class”from Paragraph 2?A.People earning $50,000 a year belong to the middle class.B.Nearly half Americans belong to the middle class.C.People generally consider bus drivers as the middle class.D.Sociologists have a clear definition of the middle class.30:According to the text,we know that________.A.power and class do not always correspond with each otherB.status refers to a person’s economic position in societyC.people with high status have a lot of control over othersD.class is less important in deciding a person’s social rank31:.Which of the following shows the structure of the whole test?DIn the computer age, a broadband Internet connection is very popular now. Whether cable or mobile broadband, today’s connect ions are many times faster than those in the earlydays. Videos play smoothly, complex websites load quickly, and files download much faster than ten years ago. And the files are much bigger, too.But there’s still a catch: You have to live near enough to a major city to get broadband Internet. If you don’t, it’s slow dial-up access for you. And for those living really far out, there may be no Internet access at all.Technology experts often talk about the “last mile” problem, which refers to the difficulty of bringing Internet access to remote locations. In cities and suburbs, it’s relatively easy to provide access for everyone. It is much more difficult to deliver access to those living far from cities, especial ly in developing countries. Internet service providers, for their part, have been reluctant to provide access to sparsely (稀疏地) populated areas. The handful of Internet users they would reach wouldn’t cover the expense.But every year, technological advancements allow of more and more Internet users. Most broadband connections today run over existing cable TV and telephone lines although these technologies aren’t available everywhere.Some companies have delivered the Internet over standard power lines. Advancements in cheaper, more efficient fiber optics cables (光纤电缆) promise to bring extremely fast Internet connections to more users.Still, the “last mile”problem remains hard to deal with. There will always be somewhere that doesn’t have an affordable broadband connection. But someday that might not matter. If the rapid progress in cell phone technology is any indication (迹象), it may not be too long before an Internet connection simply follows you wherever you go.32. According to Paragraph 4, technological advancements .A.make TV and telephone available everywhereB.make it possible for more people to use the InternetC.bring great change to people’s everyday lifeD.bring faster Internet connections to users33.What may finally deal with the “last mile”problem?A.The rapid progress in cell phone technology. B.More and more Internet users.C.More and more Internet connections. D.The broadband connection’s getting faster.34. Which of the following is true according to the passage?A.Internet connections have been popular everywhere.B.Internet service providers are willing to care about rural customers.C.Computer can’t become popular in developing countries.D.The problem of Internet access hasn’t been completely dealt w ith.35. The best title may be”_______”A. Internet connections need improvingB. Progress in Internet connectionsC. Internet connection problemsD. Internet connections today第二节( 5 小题;共10分)根据短文内容,从选项中选出能填入空白处的最佳选项。