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专题十 计数原理 第三十讲 排列与组合 一、选择题 1．(2018 全国卷Ⅱ)我国数学家陈景润在哥德巴赫猜想的研究中取得了世界领先的成果．哥 德巴赫猜想是“每个大于 2 的偶数可以表示为两个素数的和”，如30

Ⅰ. 阅读理解It was once thought that air pollution affected onlythe area immediately around large cities with factoriesand heavy automobile traffic. Today, we know thatalthough these are the areas with the worst air pollution,the problem is actually worldwide. On several occasions over the pastdecade,

Ⅰ. 把下列句子改为被动语态1. He had broken his arm when I saw him.2. Lucy had already completed the project when I arrived.3. I had sold out the ticket when she came.4. They began to climb the mountain after they had bought all the foodand drinks.5. I had turned off all the lights before I went to bed.答案：1. When I saw him his arm had been broken.2. When I arrived the project had already been completed.

Ⅰ. 阅读理解In Europe, many people make friends across theborders through town twinning. Two towns in differentcountries decide to become twin towns.Their citizens find pen-friends in the twin town.They exchange newspapers and stamps. The school teachers discussteaching methods with the teachers in the twin town. Officials visit thetwin town for celebrations. Ordinary citizens travel to the town, too, butnot very often if it is far away.

Ⅰ. 阅读理解In Europe, many people make friends across theborders through town twinning. Two towns in differentcountries decide to become twin towns.Their citizens find pen-friends in the twin town.They exchange newspapers and stamps. The school teachers discussteaching methods with the teachers in the twin town. Officials visit thetwin town for celebrations

全省“改革创新、奋发有为”大讨论 专题组织生活会示范党支部 资料汇编 山西太钢能源动力总厂 主机作业区党支部 2019 年 3 月 2 目 录 会前准备 支部专题组织生活会和民主评议党员工作计划……………03 支

讲忠诚严纪律立政德专题警示教育对照检查材料

Ⅰ. 阅读理解Born in the County, Anhui Province, Tao Xingzhi(October 18,1891—July 25, 1946)was one of the greatest educationalists, socialactivists and patriots in modern China. When he was young, Taolived in a poverty-stricken area and had witnessed miserable life ofChinese people, especially that of the peasants who accounted for80% of the nation’s population, under the suppression of foreigninvaders at that time

证券研究报告 请务必阅读正文后免责条款部分 2017 年 12 月 15 日 专题研究 固定收益研究 研究所 证券分析师： 靳毅 S0350517100001 021-68930187 jiny01@ghzq

Ⅰ. 阅读理解Most of the sandstorms that had swept China last year came fromforeign land, a Chinese official in charge of desertification control said onMonday. And the invasions( 入 侵 )could partly explain the frequentsandstorms in the country in recent years despite its achievementsin desertification control.

Ⅰ. 用 although/but/however/while 填空1. John is more hard-working than his sister, ________ he failed in theexam.2. ____________ he is an experienced dancer, he still needs a lot ofluck in performing.3. There is not much time left. ____________ , we must get there ontime anyway.4. She went out, ____________ I stayed at home.5. She was tired, ____________ she still went on working.6. You will be lucky if you can go into the exhibition for a visit without aticket. ____________ , this does not always happen.7. You like playing tennis, ____________ I like reading.

Ⅰ. 单句改错1. Either my teacher or my classmates is coming. ( )2. The boy, as well as his sisters, want to go there. ( )3. What he chiefly wished for were a chance to go to university.( )4. Each of these books cost five yuan. ( )5. Five minutes aren’t enough to finish this test. ( )6. The number of the unemployed are still increasing. ( )7. A steel works have just been built there. ( )8. His family is waiting for him. ( )9. Every possible means have been used to work out the problem.( )

__________ it on his own feet. 3 9. Fred 没有钱, 所以他决定找一份工作。 Fred didn’t have any money, so he decided ________________

Ⅰ. 阅读理解In most developed countries the government providesfree education for children because it realizes that educatedcitizens are useful to the country in their later life. Mostcountries also have private education. This means that parents can payto send their children to certain schools. People who agree with thissystem say that it gives parents a larger choice of schools. Other peoplethink that private schools give the children who go to them an unfairadvantage over other children.

Ⅰ. 单句改错1. People often talk about Hangzhou, that is famous for the West Lake.2. He reached London in 1996, when, some time later, he became afamous actor.3. I have never been to Dalian, where is said to be an attractive city.4. The sun gives off light and warmth, who makes it possible for plants togrow.5. In an open boat, there were four men, one of who was a doctor.

一、听录音，选出听到的单词或短语,将其序号填入题前括号内。(听两遍，共10 题，每小题1 分，计10分)( ) 1. A. behind B. under C. beside( ) 2. A. heavy B. hungry C. high( ) 3. A. soft B. soup C. stocking( ) 4. A. art room B. music room C. classroom( ) 5. A. bear B. body C. near( ) 6. A. send B. buy C. look( ) 7. A. thirsty B. thirty C.

一、听录音，选出听到的单词或短语,将其序号填入题前括号内。(听两遍，共10题，每小题1 分，计10 分)( ) 1. A. cake B. bike C. like( ) 2. A. fruit B. fat C. fine( ) 3. A. thirty B. thin C. thirteen( ) 4. A. dog B. door C. doll( ) 5. A. try B. eye C. fly( ) 6. A. pie B. my C. by( ) 7. A. cat B. car C. cap

一. 填空题（本大题共 12 题，1-6 每题 4 分，7-12 每题 5 分，共 54 分）1. 已知集合A    { 3, 1,0,1,2}， B x x   { || | 1}，则A B I 2. 复数5i 2 的共轭复数是3. 计算：23lim1 3 (2 1) nn n    4. 已知0 1  x，使得x x (1 )  取到最大值时，x 5. 在△ABC中，已知AB a uuur r， BC b uuur r，G为△ABC的重心，用向量ar、br表示向量AG uuur6. 设函数22log ( 1) 1( )log 1xf xx ，则方程f x( ) 1 的解为7. 已知2 8 2 4 160 1 2 8 ( 1) x a a x a x a x     ，则3 a  （结果用数字表示）

第 1页 共 4 页 绝密★启用前 2019—2020 学年度上期高中调研考试高二 文科数学试题 注意事项： 1.答卷前，考生务必将自己的姓名、考生号等填写在答题卡和试卷指定位置上。 2.回答选择题时

分，每一局从袋中一次性取出三个球，将 3 个球对应的分值相加后称为该局的得 分，计算完得分后将球放回袋中．当出现第 n 局得 n 分 ( *)nN 的情况就算游戏过关，同时游戏结束， 若四局过后仍未过关，游戏也结束．