文档视界 最新最全的文档下载
当前位置:文档视界 › 【上海市重点中学】2019-2020年行知中学高一上10月月考数学试卷含答案

【上海市重点中学】2019-2020年行知中学高一上10月月考数学试卷含答案

【上海市重点中学】2019-2020年行知中学高一上10月月考数学试卷含答案
【上海市重点中学】2019-2020年行知中学高一上10月月考数学试卷含答案

1

行知中学高一上10月月考

一. 填空题

1. 已知集合2{9,,1}A x x =-+,集合2{1,2}B x =,若{2}A B =I ,则x 的值为

2. 已知,x y ∈R ,命题“若5x y +≥,则3x ≥或2y ≥”是 命题(填“真”或“假”)

3. 设2{|8150}A x x x =-+=,{|10}B x ax =-=,若A B B =I ,则实数a 组成的集合是

4. 已知x ∈R ,命题“若25x <<,则27100x x -+<”的否命题是

5. 若{|}A x x a =<,{23}B x =-<<,则A B =R R U e,则实数a 的范围是

6. 已知集合2{|1,}M y y x x ==-∈R ,2{|3}N x y x ==-,则M N =I

7. “

11

2

x <”是“2x >”的 条件 8. 设集合{(,)|1}U x y y x ==+,3

{(,)|

1}2

y A x y x -==-,U A =e 9. 已知关于x 的不等式22+0ax x c +>的解集为11()32

-,,其中,a x ∈R ,则关于x 的不

等式220cx x a -+->的解集是

10. 若关于x 的不等式

221)2(1)30a x a x ---+>(对一切实数x 都成立,则实数a 的取

2

值范围是

11. 用()C A 表示非空集合A 中元素的个数,定义()()()()

()()()()

C A C B C A C B A B C B C A C B C A -≥?*=?->?,

{1,2}A =,22{|()(2)0}B x x ax x ax =+++= ,1A B *=,设实数a 的所有可能取值构成

集合S ,则()C S =

12. 已知有限集123{,,,,}n A a a a a =???(2)n ≥,如果A 中元素i a (1,2,3,,)i n =???满足

12123n n a a a a a a a ???=+++???+,就称A 为“复活集”,给出下结论:

① 集合1515

{

}-+--是“复活集”

; ② 若12,a a ∈R ,且12{,}a a 是“复活集”,则124a a >;

③ 若12,a a ∈*N ,且12{,}a a 不可能是“复活集”;

④ 若1a ∈*N ,则“复活集”A 有且只有一个,且3n =;

其中正确的结论是 (填上你认为所有正确的结论序号)

二. 选择题

13. 若集合P 不是集合Q 的子集,则下列结论正确的是( )

A. Q P ?

B. P Q =?I

C. P Q ≠?I

D. P Q P ≠I

3

14. 集合P 具有性质“若x P ∈,则

1

P x

∈”

,就称集合P 是伙伴关系的集合,集合 11

{1,0,,,1,2,3,4}32

A =-的所有非空子集中具有伙伴关系的集合的个数为( )

A. 3

B. 7

C. 15

D. 31

15. 已知,,a b c ∈R ,则下列四个命题正确的个数是( )

① 若22ac bc >,则a b >;② 若|2||2|a b ->-,则22(2)(2)a b ->-;

③ 若0a b c >>>,则

a a c

b b c

+>+;④ 若0a >,0b >,4a b +>,4ab >,则2a >,2b >.

A. 1

B. 2

C. 3

D. 4

16. 若实数a 、b 满足0a ≥,0b ≥且0ab =,则称a 与b 互补,记

(,)a b ?22a b a b =+-,

那么(,)0a b ?=是a 与b 互补的 ( )条件

A. 充分不必要

B. 必要不充分

C. 充要

D. 既不充分也不必要

三. 解答题

17. 设集合2{|320}A x x x =++=,2{|(1)0}B x x m x m =+++=;

(1)用列举法表示集合A ;

(2)若x B ∈是x A ∈的充分条件,求实数m 的值.

4

18. 已知:{|17}A x x =≤≤,2{|12200}B x x x =-+<,{|121}C x m x m =+<<-,

全集U =R ;

(1)求A B U ,()U A B I e;

(2)若A C A =U ,求m 的取值范围.

19. 某种商品每件成本80元,当每件售价100元,每天可以出售100件,若售价降低10x %,

售出的商品数量就增加16x %;

(1)试建立该商品一天的营业额y (元)关于x 的函数关系式;

(2)如果要求该商品一天的营业额至少是10260元,且不能亏本,求x 的取值范围.

20. 已知集合22{|,,}A x x m n m n ==-∈Z ;

(1)判断8,9,10是否属于A ,并证明;

(2)已知集合{|2+1,}B x x k k ==∈Z ,证明x A ∈的充分必要条件是x B ∈;

(3)写出所有满足集合A 的偶数.

5

21. 已知关于的不等式22(23)(1)10()k k x k x k --+++>∈R 的解集为M ;

(1)若M =R ,求k 的取值范围;

(2)若存在两个不相等负实数a 、b ,使得(,),)M a b =-∞+∞U (,求实数k 的取值范围;

(3)是否存在实数k ,满足:“对于任意n ∈*N ,都有n M ∈,对于任意的m -∈Z ,都

有m M ?”,若存在,求出k 的值,若不存在,说明理由.

参考答案

一. 填空题

1. 1

2. 真

3. 11

{0,,}35

4. 若2x ≤或5x ≥,则27100x x -+≥

5. 3a ≥

6. [3]-

7. 必要不充分

8. {(2,3)}

9. (2,3)- 10. (,2][1,)-∞-+∞U 11. 3 12. ①③④

二. 选择题

13. D 14. C 15. C 16. C

三. 解答题

6

17.(1){1,2}A =--;(2)1m =或2m =.

18.(1)[1,10),(7,10);(2)4m ≤.

19.(1)100(10.1)100(10.16)y x x =-?+,定义域为[0,2];(2)1

[,2]2

.

20.(1)8A ∈,9A ∈,10A ?;(2)证明略;(3)所有满足集合A 的偶数为4k ,k ∈Z .

21.(1)13(,1](

,)3-∞-+∞U ;(2)13

(3,)3

(3)3k =.

上海市行知中学2020_2021学年高二英语上学期12月月考试题含解析

上海市行知中学2020-2021学年高二英语上学期12月月考试题(含 解析) 考试时间:100分钟满分:100分 第I卷(共77分) I. Listening Comprehension Section A Directions: In Section A, you will hear ten short conversations between two speakers. At the end of each conversation, a question will be asked about what was said. The conversations and the questions will be spoken only once. After you hear a conversation and the question about it, read the four possible answers on your paper, and decide which one is the best answer to the question you have heard. 1. A. At a dancing show. B. At an airport. C. At home. D. At a cinema. 2. A. He can’t find the manager. B. His new watch doesn’t work. C. He doesn’t get the right watch. D. His deposit was missing. 3. A. The plan of their holiday trips. B. Their feeling of the trip to Washington. C. The weather of the beach. D. Their wishes and dreams. 4. A. Save money on the rent. B. Share the rent with someone. C. Find a part-time job. D. Apply for a student loan. 5. A. The woman has watered too much. B. Moving plants is not a good idea. C. The plants may need more sunshine. D. The woman should get some professional help. 6. A. She is ill and has to stay at home. B. She hates watching TV at home. C. She can’t go to work herself. D. She’s wasting much ti me watching TV. 7. A. Look at the laundry basket. B. Check the business time of the laundry. C. Go to do her laundry. D. Find another suitable blouse. 8 A. The man will have a business trip tomorrow. B. The woman has no idea what the boss is doing.

【解析】上海市南汇中学2019-2020学年高一上学期十月考试数学试题

上海南汇中学2019学年第一学期10月考试 高一数学 一、填空题(每小题3分,共12题,共36分) 1.设集合{}1,2,3A =-,集合{}23,B a =,若B A ?,则a =__________. 【答案】 【分析】 由题意得出22a =,由此可解出实数a 的值. 【详解】20a ≥Q ,且{}1,2,3A =-,{}23,B a =,B A ?,22a ∴= ,解得a = 故答案为:【点睛】本题考查利用集合的包含关系求参数,在处理有限集的问题时,还应注意集合的元素应满足互异性,考查计算能力,属于中等题. 2.用描述法表示所有被4除余1 的整数组成的集合:_________. 【答案】{} 41,x x n n Z =+∈ 【分析】 利用描述法和整除性质即可得出. 【详解】由题意知,所有被4除余1的整数组成的集合为{}41,x x n n Z =+∈. 故答案:{} 41,x x n n Z =+∈. 【点睛】本题考查描述法、数的整除性质,考查推理能力,属于基础题. 3.设集合(){},13A x y y x = =-,(){},5B x y y x ==+,则A B =I __________. 【答案】 (){}1,4- 【分析】 解方程组135 y x y x =-??=+?,求出公共解,即可得出集合A B I .

【详解】解方程组135y x y x =-??=+?,得14x y =-??=? ,因此,(){}1,4A B =-I . 故答案为:(){}1,4-. 【点睛】本题考查集合交集的计算,同时也考查了二元一次方程组的求解,在表示集合时要注意集合元素的类型,考查计算能力,属于基础题. 4.不等式1123 x <-的解集是_________. 【答案】()3, 2,2? ?-∞?+∞ ??? 【分析】 将原不等式变形为24023 x x ->-,解出该不等式即可. 【详解】由1123x <-,移项得11023x ->-,即24023x x ->-,解得32 x <或2x >. 因此,不等式1123x <-的解集是()3,2,2??-∞?+∞ ?? ?. 故答案为:()3,2,2? ?-∞?+∞ ?? ?. 【点睛】本题考查分式不等式的求解,考查运算求解能力,属于基础题. 5.已知关于x 的不等式220ax x c ++>的解集为11(,)32 -,则不等式220cx x a -+->的解集为__________. 【答案】(2,3)- 分析:不等式2 20ax x c ++>的解集为11,32??- ???,则方程220ax x c ++=的根为11,32-,利用韦达定理求参数c a 、,再解不等式220cx x a -+->即可。 详解:不等式220ax x c ++>的解集为11, 32??- ???,则方程220ax x c ++=的根为11,32-,由韦达定理可知:2111a 12326a -=-+=?=-,111c 2326 c a =-?=-?=,所以不等式

2017重点中学小升初数学试卷及答案

2017重点中学小升初小升初数学测试试卷 一、直接写出下列各题的得数。(共6分) 4505÷5 = 24.3-8.87-0.13= 二、填空。(16分) 1、由1、 2、3这三个数字能组成的三位数一共有()个,它们的和是()。 2、一道除式,商是22,余数是6,被除数与除数的和是259,这道除式的除数是(),被除数是()。 3、甲乙两数的最小公倍数是78,最大公约数是13,已知甲数是26,乙数是()。 4、小明有15本故事书,比小英的3倍多a本,小英有()本故事书。 5、两个数相除的商是7.83,如果把被除数和除数的小数点同时向右移动一位,商是()。 6、一个比例的两个内项互为倒数,它的一个外项是0.8,另一个外项是()。 7、单独完成同一件工作,甲要4天,乙要5天,甲的工作效率是乙的()%。 8、一个带小数的整数部分与小数部分的值相差88.11,整数部分的值恰好是小数部分的100倍,这个数是()。 三、选择正确答案的序号填在题中的括号里。(20分) 1、圆有()对称轴. A.1条 B.2条 c.4条 D.无数条 2、五年级同学参加科技小组的有23人,比参加书法小组人数的2倍多5人,如果设书法小组有x人,则正确的方程是() A.2( x+5)=23 B.2x+5=23 C.2x=23-5 D.2x-5=23 3、等底等体积的圆柱和圆锥,圆锥高是9米,圆柱高是() A.9米 B.18米 C.6米 D.3米 4、把24分解质因数是()

A.24=3×8 B.24=2×3×4 C.24=2×2×2×3 D.24=6×4×1 5、甲把自己的钱的1/3给乙以后,甲、乙两人钱数相等,甲、乙原有钱数的比是() A.2:3 B.3:2 C.3:5 D.5:3 四、用递等式计算(12分) 1042-384÷16×13 4.1-2.56÷(0.18+0.62) 3.14×43+7.2×31.4-150×0.314 五、解答题。(9分) 1、下图中,长方形被两条直线分成四个小长方形,其中三个的面积分别是12平方米、8平方米、20平方米,求另一个(图中阴影都分)长方形的面积。(5分) 2、求阴影部分的面积(单位:米)。(4分) 六、列式解答。(12分) 1、甲数的25%是1.25,乙数是60的20%,乙数是甲数的百分之几。

上海市行知中学2020-2021学年高三下学期3月月考数学试题

上海市行知中学2020-2021学年高三下学期3月月考数学试 题 学校:___________姓名:___________班级:___________考号:___________ 一、填空题 1.若复数z 满足2136z i -=+(i 为虚数单位),则z =____________. 2.函数()()1,1x f x a b a b =+><-不经过第_________象限. 3.已知“x k >”是“ 3 1x <”的充分不必要条件,则实数k 的取值范围是_________. 4.在报名的2名男教师和4名女教师中,选取3人参加义务献血,要求男、女教师都有,则不同的选取方式的种数为________(结果用数值表示). 5.设函数()()cos 06f x x πωω?? =- > ?? ? ,若()4f x f π?? ≤ ??? 对任意的实数x 都成立,则ω的最小值为__________. 6.如果已知极限1lim sin 1n n n →∞??= ???,那么极限21 5sin lim 21 n n n n →∞--=________. 7.已知P 为曲线sin cos 12sin 2x y θθθ=+??=-? (θ是参数,02θπ≤<)上一点,则点P 到点 ()0,1Q 距离的最小值是_______. 8.已知函数()()2 11f x ax b x b =+++-,若对任意的b R ∈,函数()()F x f x x =-总有两个不同的零点,则实数a 的取值范围是___________. 9.若正三棱锥的正视图与俯视图如图所示,则它的侧视图的面积为__________. 10.若实数x 、y 满足约束条件4y x x y y k ≤?? +≤??≥? ,且2z x y =+的最小值是9-,则实数k = ______. 11.在平面直角坐标系中,已知A (1,0),B (0,?1),P 是曲线 上一个动

2018-2019学年度辽宁省部分重点高中高三联考数学试题含答案

2018-2019学年度辽宁省部分重点高中高三联考数学试题 (理科) 第Ⅰ卷(共60分) 一、选择题:本大题共12个小题,每小题5分,共60分.在每小题给出的四个选项中,只有一项是符合题目要求的. 1.已知集合,,则能使成立的实数的取值范围是() A.B.C.D. 2.复数(、、),且,则的值是() A. B.C.D. 3.有下列四个命题: (1)“若,则,互为倒数”的逆命题; (2)“面积相等的三角形全等”的否命题; (3)“若,则有实数解”的逆否命题; (4)“若,则”的逆否命题. 其中真命题为() A.(1)(2) B.(2)(3) C.(4) D.(1)(2)(3) 4.若,则的最大值和最小值分别是() A.,B.,C.,D., 5.已知方程有两个正根,则实数的取值范围是()A.B.C.D. 6.已知为等比数列,若,,则()A.B.C.D.

7.已知数列的前项和为,满足,则的通项公式()A.B. C.D. 8.函数的图象大致是() 9.已知函数为定义在上的偶函数,且在上单调递减,则满足 的的取值范围() A.B.C.D. 10.在平行四边形中,,,,点在边上,则 的最大值为() A.B.C.D. 11.已知,,的图象与的图象关于点对称,则的最小值为() A.B.C.D. 12.已知偶函数满足,且,则的解集为() A.B.C. D.

第Ⅱ卷(共90分) 二、填空题(每题5分,满分20分,将答案填在答题纸上) 13.已知向量,,且,则. 14.已知数列是等差数列,,,成等比数列,则该等比数列的公比为. 15.已知△,,,是边上的中线,且,则的长为. 16.已知是函数在上的所有零点之和,则 的值为. 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.已知函数. (1)求函数的单调递增区间; (2)在△中,三内角,,所对的边分别为,,,已知函数的图象经过点,,,成等差数列,且,求的值. 18.在数列中,,. (1)设,证明:数列是等差数列; (2)求数列的前项和. 19.已知,,为锐角△的三个内角,向量, ,且. (1)求的大小; (2)求取最大值时角的大小.

上海市南汇中学高三第一次考试英语

上海南汇中学 2011—2012学年度高三第一次考试 英语试题 本试卷分为第I卷和第II卷两部分,满分150分。考试时间120分钟。 第Ⅰ卷(105分) I.Listening Comprehension Section A Directions: In Part A, you will hear ten short conversations between two speakers.At the end of each conversations, a question will be asked about what was said.The conversation and the question will be spoken only once.After you hear a conversation and the question about it, read the four possible answers in your paper, and decide which one is the best answer to the question you have heard. 1.A.In a drugstore.B.In a warehouse. C.In a department store.D.In a fashion designer's studio, 2.A.She's spending time going over her accounts. B.She's going home for only a few days. C.She's excited about going home. D.She's counting the number of vacation days. 3. A.150.B.135.C.100.D.15.4.A.When he was sixteen.B.When he was thirty-nine.C.When he was thirteen.D.When he was thirty. 5.A.He can't go to the lab this week. B.He thinks the woman is being unfair. C.He agrees that the workload is too heavy. D.He feels the assignment is reasonable. 6.A.The woman asks the man to help her manage her money. B.The woman helps the man leam to manage his money. C.The woman pays for the seminar. D.The woman will go to the seminar with the man. 7.A.It is not his affair. B.He is too busy to answer her. C.It has been two weeks since he met Charles last time. D.He doesn't know Charles well. 8.A.Lawyer and client.B.Secretary and patient.C.Shop assistant and customer.D.Waiter and customer.

最新 2020年重点中学小升初数学试卷

重点中学小升初数学试卷 一、填空题: 1.用简便方法计算: 2.某工厂,三月比二月产量高20%,二月比一月产量高20%,则三月比一月高______%. 3.算式: (121+122+…+170)-(41+42+…+98)的结果是______(填奇数或偶数). 4.两个桶里共盛水40斤,若把第一桶里的水倒7斤到第2个桶里,两个桶里的水就一样多,则第一桶有______斤水. 5.20名乒乓球运动员参加单打比赛,两两配对进行淘汰赛,要决出冠军,一共要比赛______场. 6.一个六位数的各位数字都不相同,最左一位数字是3,且它能被11整除,这样的六位数中最小的是_________. 7.一个周长为20厘米的大圆内有许多小圆,这些小圆的圆心都在大圆的一个直径上.则小圆的周长之和为______厘米.

8.某次数学竞赛,试题共有10道,每做对一题得8分,每做错一题倒扣5分.小宇最终得41分,他做对______题. 9.在下面16个6之间添上+、-、×、÷(),使下面的算式成立: 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 = 1997 二、解答题: 1.如图中,三角形的个数有多少? 2.某次大会安排代表住宿,若每间2人,则有12人没有床位;若每间3人,则多出2个空床位.问宿舍共有几间?代表共有几人?

3.现有10吨货物,分装在若干箱内,每箱不超过一吨,现调来若干货车,每车至多装3吨,问至少派出几辆车才能保证一次运走? 4.在九个连续的自然数中,至多有多少个质数? 1.用简便方法计算下列各题: (2)1997×19961996-1996×19971997=______; (3)100+99-98-97+…+4+3-2-1=______. 2.右面算式中A代表______,B代表______,C代表______,D代表______(A、B、

2019-2020学年 上海市行知中学高一上英语10月月考英语试卷

上海市行知中学2019学年第一学期 高一年级第一次月考英语试卷 I. Grammar and Vocabulary Section A Directions: After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank. Mistakes that work The best way to learn something is to make mistakes first. Thomas Edison, (1) __________ invented the light bulb, told his colleagues: “Of the 200 light bulbs that didn’t work, every failure told me something was able to incorporate (融入) into the next attempt.” Benjamin Franklin, the US statesman and scientist once said: “I haven’t failed. I have had 10,000 ideas that didn’t work.” (2) __________ of these people understood that failures and false starts are the condition of success. In fact, (3) __________ surprising number of everyday objects had their beginnings in a mistake or a misunderstanding. Post-it notes, packets of crisps and even bread are all unexpected inventions. In 2600 BC, a tired Egyptian slave invented (4) __________ is now called bread when the dough (面团) rose during his sleep. And crisps were first cooked by a cook in the USA when a customer suggested his fried potatoes be (5) __________ (thin) than they were. In 1968 Spencer Silver was trying to develop a strong glue when he accidentally invented a very weak glue instead. His colleague, Art Fry decided to use it six years later, in1974, to have his bookmarks (6) __________ (hold) in his books and the post-it note was invented. Successful businesspeople have often made big, expensive mistakes in their past. When an employee of IBM made a mistake that cost the company $600,000, Thomas Watson, the chairman, (7) __________ (ask) if he would fire the man. “No,” he replied. “I have just spent $600,000 (8) __________ (train) him. I won’t let another company (9) __________ (benefit) from the experience. The important thing to remember is that you need to learn from your mistakes. (10) __________ you don’t, then there is no point making them. 1 / 11

上海南汇中学2015学年高三10月月考卷

上海南汇中学2015学年高三10月月考卷 II. Reading Section A (16分) Directions: Read the following two passages. Fill in each blank with one proper word or the proper form of the given word to make the passage coherent. Make sure that your answers are grammatically correct. (A) People in all parts of the world are observing “No Tobacco Day”. It is the day 25 the World Health Organization appeals to people to stop using tobacco products. The WHO hopes 26 people stop smoking cigarettes or chewing tobacco for one day, they will stop permanently. The day includes special observances and awards ceremonies in 166 countries. The target group for this year’s “NO Tobacco Day” is women. Organizers want to make sure women know the dangers of smoking. Health experts have warned for years that smoking 27 lead to heart disease, cancer and other problem. The World Health Organization says diseases linked to smoking kill at least 2,500,000 persons each year. Still, many people find it difficult to stop smoking. One reason is nicotine, a substance found in cigarettes. Nicotine is a drug. The effects of it are similar to the effects of cocaine and heroin. “No Tobacco Day” is aimed at smokers and those 28 earn money from tobacco sales. So businesses are asked to stop selling tobacco products for twenty-four hours. Newspapers are required not 29 (publish )_advertisement for cigarettes. Two important developments 30 ( observe) in recent years. In industrial countries, the number of smokers has been falling about one percent a year. But in developing countries, the number of smokers has been rising two percent a year. This is the result of increased efforts by tobacco companies 31(sell) their products in developing countries. The World Health Organization has approved plans _to help reach its goal of a “smoke-free” world. 32 governments ought to offer tobacco farmers the chance to earn money by growing other crops. Another involves improved public information campaigns about the dangers of smoking. (B ) In cinema's earliest days, the film industry was based in the nation's theatrical center, New York, and most films were made in New York or New Jersey, 33 a few were shot in Chicago, Florida, and elsewhere. Beginning in 1908, however, a growing number of filmmakers located

2019-2020学年上海市行知中学高一下学期期末数学试题(解析版)

2019-2020学年上海市行知中学高一下学期期末数学试题 一、单选题 1.将表的分针拨慢10分钟,则分针转过的角的弧度数是( ) A . 3 π B . 6 π C .3 π- D .6 π- 【答案】A 【解析】将表的分针拨慢10分钟,则分针逆时针转过60°,即分针转过的角 的弧度数是 3 π. 本题选择A 选项. 2.关于函数()(0)a f x x a x =- >,有下列四个命题,其中正确的是( ) A .()f x 的值域是(,0)(0,)-∞+∞ B .()f x 是奇函数 C .()f x 在(,0)(0,)-∞+∞上单调递增 D .方程|()f x a =∣ 总有两个不同的解 【答案】B 【解析】A 中通过令()0f x =可求得x 的值,可知值域包括0,可判断A ; B 中根据奇函数的定义可判断B ; C 中通过反例可确定()f x 在()(),00,-∞?+∞上不满足单调递增的定义,可判断C ; D 中将方程变为a x a x - =±,通过验证两个一元二次方程各有两个不等实根,并且0x =不是其中任何一个的根,即可确定方程共有四个不同解,可判断D. 【详解】 对于A 选项:令0a x x - =,解得:x =()f x 值域含有元素0,则A 错误; 对于B 选项:由解析式可知()f x 定义域为{} 0x x ≠,又 ()()a a f x x x f x x x -=-- =-+=-- ()f x ∴是奇函数,则B 正确; 对于C 选项:当()x ∈时,()0f x >;当(x ∈时,()0f x <,可知()f x 在()(),00,-∞?+∞上不满足单调递增的定义,则C 错误; ④由()f x a =得: ()f x a =±,即a x a x - =±,整理可得:20x ax a ±-= 240a a ∴?=+>,20x ax a ∴+-=与20x ax a --=各有两个不等实根,

重点高中预录数学模拟试题华师一附

2016年华中师大一附中预录数学模拟试题 一、选择题(本大题6个小题,每小题6分,共36分) 1.已知,c b a , c b a 31110-=++=++那么2221 11c b a ++的值为( ) A .3 B .6 C .9 D .12 2.若1≠mn ,且有07201652 =++m m 及05201672 =++n n ,则n m 的值为( ) A .57 B .75 C .52016- D .7 2016 - 3.已知sin αcos α=8 1 ,且45°<α<90°,则cos α- sin α的值为( ) A . 2 3 B .43 C .23- D .43- 4.如图,在正△ABC 中,P 为正三角形内任意一点,过P 作PD ⊥BC ,PE ⊥AB ,PF ⊥AC ,连接AP ,BP ,CP ,如果S △APF + S △BPE + S △CPD = 2 3 3,那么△ABC 的内切圆的半径为( ) A .1 B .3 C .2 D . 2 3 5.如图,在平面直角坐标系中,⊙O 1过原点O ,且与⊙O 2外切,圆心O 1与O 2在x 正半轴上,⊙O 1的半径O 1P 1,⊙O 2的半径O 2P 2都与x 轴垂直,且点P 1、P 2在反比例函数 )0(1 >=x x y 的图象上,则21y y +的值为( ) A .2 2 B .1 C . 2 3 D .2 6.如图,在△ABC 中,D 、 E 是BC 边上的点,BD :DE :EC=3:2:1,M 在AC 边上,CM :MA=1:2,BM 交AD 、AE 于H 、G ,则BH :HG :GM 等于( ) A .3:2:1 B .5:3:1 C .25:12:5 D .51:24:10 二、填空题(本大题共6个小题,每小题7分,共42分) 7.已知0132 =+-a a 且3331 23 4=+-++2a ma a ma a ,则m 的值为 . 8.记∑ =++ + = 2016 1 2 2)1(1 11k k k M ,再记[M]表示不超过M 的最大整数,则[M]为 .

重点中学小升初数学模拟试题及答案(八)

重点中学小升初数学模拟试题及答案(八) 一、填空;(2,5×12=30) 1、一个数由3个10000,8个100,4个1,5个0,001组成,这个数读作 ____________, 2、一个三位数,各位数字分别为A、B、C,它们互不相等,且都不为0。用A、 B、C排得六个不同的三位数,若这六个三位数之和是2442,则这六个三位数中最大的是__________, 3、将自然数1~100排列如下表; 在这个表里用长方形框出了两行六个数(图中长方形仅为示意。如果框起来的六个数的和为423,问这六个数中最小的数是__________。 4、用质数a除2033,商是一个两位数,余数是35,质数a是_________。 5、两个数的最大公约数是15,是这两个数的最小公倍数的,已知一个数是30,另一个数是__________。 6、5吨煤平均分成7堆,每堆占5吨煤的__________。 7、用两个与右图同样的三角形,可以拼出几个不同的平行四边形,其中周长最长的是__________厘米。 8、两个圆O1和O2,他们的直径分别是1米和3750米,现在分别把两直径都加长1米,问; a) 哪一个圆的周长增加多些__________;

b) 哪一个圆的面积增加多些__________。 9、在一个正方体的顶面和侧面各画一条对角线AB和AC,(如图)想一想,AB与AC所组成的夹角是__________度。 10、一块长方形铁皮利用图中阴影部分刚好能做成一个圆柱形油桶,(如图)(接头处忽略不计),这个桶的容积是__________。(单位;分米) 11、如图是育才小学六年级学生参加活动小组情况统计图。已知参加体育组人数是264人,参加文娱组人数是__________人。 二、判断;(1×4=4) 1、5,保留两位小数约等于5,90。【】 2、一个数的最大约数与最小倍数的积是这个数的平方。【】 3、有一个最简分数,分子、分母的积是36,这个分数最大是。【】 4、梯形的上底和下底不变,它的面积与高成正比例。【】 三、选择正确答案序号填在括号里。(1,5×4=6)

重点高中自主招生数学模拟试题含答案

F 2010年重点中学自主招生数学模拟试题一 姓名 一、选择题(共5小题,每题6分,共30分.以下每小题均给出了代号为A,B,C,D 的四个选项,其中有且只有一个选项是正确的.请将正确选项的代号填入题后的括号内.不填、多填或错填均不得分) 1、如果关于x 的方程2 2 30x ax a -+-=至少有一个正根,则实数a 的取值范围是( ) A 、22<<-a B 、23≤

2018-2019学年上海市浦东新区南汇中学高一上英语期中试卷解析

2018-2019学年上海市浦东新区南汇中学高一上英语期中试卷解析 II. Grammar and Vocabulary (20%) Section A (10%) Directions: After reading the passage below. fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.. For many people, having your own business sounds like the perfect job. You can do work that you love and set your own schedule. Every morning, you (21)________(greet) with cries of welcome from your employees At night, you don’t have to be forced to work overtime. You never have to listen to a boss, and you can even raise your salary any time you want. Nevertheless the reality is different "(22)________ (run) your own business can be lonely." says David Pail.l who started a website design business at home years ago. His income in the first two months was $0.Finally, he got a big project creating a website for a magazine. Then he had a new problem: his schedule. "I was working twelves hours a day, seven days a week (23)________I didn't have employees to help me.”today, Paid Web Design is successful but David says,”I wasn't really prepared at the beginning I didn't understand the challenges I(24)________(face)then." Some of the challenges are practical With no boss, (25)________ is easy to take too much time off-and get too little work done. With no co-worker ,you might feel (26)________ (bore). You have to pay for your own benefits, such as vacations and insurance. (27)________ you make a bad business decision,you will lose all the money that you invested. For all of these reasons. more than half of all new businesses fail within one year. Another problem is balancing work with personal life. As a business owner, you can't just stop at 5p.m. and forget about your work until tomorrow. David recalls,” Even when I was watching TV in the evening. I was thinking about my clients and my projects, I did try to stay away from my business after work, but my worry was impossible (28)________(hide)." Still, hundreds of people around the world start businesses every day, and most enjoy the adventure.Denise Williams, the owner of a women’s clothing store, began by making and selling T-shirts in her apartment and she (29)________ (open) seven new branches since then. "There are lots of advantages to having your own business," says Denise, "You can decide exactly (30)________ to operate it and who will be by your side to work for you. When you are your own boss, there are no limits." 【答案】21.are greeted 22.Running 23because/as/since 24.was facing/faced 25.it 26.bored 27.If

相关文档
相关文档 最新文档