篇一:2016—2017炉山第二中学九年级数学模拟考试试卷(2)
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学2016—2017学年度第一学期炉山二中模拟考试试卷 九年级 数 学(全上册) (限时120分钟,满分150分)
一、选择题(每小题3分,共10小题,合计30分) 1.下列函数不是反比例函数的是( ) A.y= B.y= C.y=x﹣1 D.y= 2.从长度分别为1、3、5、7的四条线段中任选三条作边,能构成三角形的概率为( )A. B. C. D. 3.如图,太阳在房子的后方,那么你站在房子的正前方看到的影子为( ) A. B.C. D. 4.将一个长方体内部挖去一个圆柱(如图所示),它的主视图是( )
A. B. C.D.
5.若关于x的一元二次方程4x2﹣4x+c=0有两个相等实数根,则c的值是( )
A.﹣1 B.1 C.﹣4D.4
分
6.若n(n≠0)是关于x的方程x2+mx+3n=0的一个根,则m+n的值是( )
A.﹣3 B.﹣1 C.1 D.3
7.已知关于x的一元二次方程x2+mx+n=0的两个实数根分别为x1=﹣2,x2=4,
则m+n的值是( )
A.﹣10 B.10 C.﹣6 D.2
8.如图,在正方形ABCD外侧,作等边三角形ADE,AC,BE相交于点F,
则∠BFC为( )
A.75° B.60° C.55° D.45°
第8题 第9题
9、如图,△ADE∽△ABC,若AD=1,BD=2,则△ADE与△ABC的相似比是( )
A.1:2 B.1:3 C.2:3D.3:2
10、若ab<0,则正比例函数y=ax与反比例函数y=在同一坐标系中的大致图象可能是( )
A.
B.C.D.
二.填空题(每小题5分,共5小题,合计25分)
11、方程x2=2的解是。
12、如图,BC⊥AE于点C,CD∥AB,∠B=40°,则∠ECD的度数是度.
213、已知菱形ABCD的面积为24cm,若对角线AC=6cm,则这个菱
形的边长为cm。 第12题
14、如图,在平面直角坐标系中,过点M(﹣3,2)分别作x轴、y轴的垂线与反比例函数y=的图象交于A,B两点,则四边形MAOB的面积为。
第14题 第15题
15、如图,正方形ABCD和正方形CEFG中,点D在CG上,BC=1,CE=3,H是AF的中点,那么CH的长是。
三.解答题(共7小题, 21题15分,22题10分,23题9分,24题12分,25题8分,26题12分,27题14分,合计80分)
2216、(15分)(1) 解方程:x﹣2x﹣2=0 (配方法)(2) 解方程:2x﹣8x+3=0(公式法)
(3)解方程:(x-1)2+2x(x-1)=0 (因式分解法)
217、(7分)先化简,再求值:(x﹣1)+x(x+2),其中x=
18、(8分)画出如图所示几何体的主视图、左视图、俯视图。
19、(8分)“低碳生活,绿色出行”,自行车正逐渐成为人们喜爱的交通工具.某运动商城的自行车销售量自2014年起逐月增加,据统计,2014年该商城1月份销售自行车64辆,3月份销售了100辆。
(1)求1月到3月自行车销量的月平均增长率;
(2)若按照(1)中自行车销量的增长速度,问该商城4月份能卖出多少辆自行车?
20、(10分)已知:关于x的方程x2?2(m?1)x?m2?0
(1)当m取什么值时,原方程没有实数根;
(2)对m选取一个你喜欢的非零整数,使原方程有两个实数根,求这两个实数根的平方和。 ....
21、(12分) 如图,在6×8网格图中,每个小正方形边长均为1,点O和A、B、C三点均为格点。
(1)以O为位似中心,在网格图中作△A′B′C′,使△A′B′C′和△ABC位似,且位似比为1:2;
(2)连接(1)中的AA′,求四边形AA′C′C的周长。(结果保留根号)
22、(8分)如图,有一个可以自由转动的转盘被平均分成4个扇形,分别标有1、2、3、4四个数字,小王和小李各转动一次转盘为一次游戏.当每次转盘停止后,指针所指扇形内的数为各自所得的数,一次游戏结束得到一组数(若指针指在分界线时重转)。
(1)请你用树状图或列表的方法表示出每次游戏可能出现的所有结果;
(2)求每次游戏结束得到的一组数恰好是方程x﹣4x+3=0的解的概率。 2
篇二:2017届广西南宁第二中学高三2月月考数学(理)试题 扫描版 (1)
2017年2月南宁二中高三月考数学(理科)参考答案
一、选择题:
二、填空题
;16.7 5
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.
13.-361;14.??2,4?;15.17.解析:由正弦定理得:
2a3c?2b2sinA3sinC?2sinB
???,………………1分 cosAcosBcosAcosB
即2sinAcosB?3sinCcosA?2sinBcosA,即
2(sinAcosB?cosAsinB)?2sinC?3sinCcosA,…………………………3分
由于?sinC?0,?cosA?则a?sinA
25,则sinA?,由于b?5sinB,………………4分 33
b5
?………………………………6分 sinB3
(2)由?ABC的面积为
15,得absinA?,…………………………7分 222
所以bc?3,…………………………8分 又a?
4102
6,b2?c2?bc?6,(b?c)?bc?6,………………10分
33
2
(b?c)?16,所以b?c?4.…………………………12分 即
18.解:(Ⅰ)函数f?x??x??x?1过(0,?1)点,在区间(4,6)上有且只有一个零点,则必有?
2
?f(4)?0
?f(6)?0
即:?
?16?4??1?01535
???,解得:,所以,??4或??5…………3分 4636?6??1?0?
21111
C20C15C20?C10C151268
??5当??4时,P,当时,…………5分 P????2122
C5049C50245
??4与??5为互斥事件,由互斥事件有一个发生的概率公式,
6812128??所以P?…………6分 24549245
(Ⅱ)从该单位任选两名职工,用?表示这两人请假次数之差的绝对值,则?的可能取值分别是0,1,2,3,………………7分
222111111
C52?C10?C
20?C15C5C10?C10C20?C15C20222
于是P???0??,, ?P(??1)??22
C507C5049111111
C5C153C5C20?C10C1510
,…………10分 P(??3)??P(??2)??22
C5049C5049
从而?的分布列:
篇三:广东省普宁市第二中学2016_2017学年高二英语上学期期末考试试题
普宁市第二中学2018届高二级上学期·期末考试
英语试题
注意事项:
1.答卷前,考生务必用黑色字迹的钢笔或签字笔将自己的姓名和考生号填写在答题卷上。
2.用2B铅笔将选择题答案在答题卷对应位置涂黑;答案不能答在试卷上。
3.非选择题必须用黑色字迹钢笔或签字笔作答,答案必须写在答题卷各题目指定区域内的相应位置上;不准使用铅笔或涂改液。不按以上要求作答的答案无效。
4.考生必须保持答题卷的整洁。
第I卷(选择题 共100分)
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 is the post office?
A. Near the traffic lights.
B. Opposite the bookstore.
C. At the turning of the street.
2. What does the woman say about Jim?
A. He’ll return the following week.
B. He’ll begin his vacation next week.
C. He’ll be back right after the holiday.
3. When did the alarm clock go off?
A. At 8:00. B. At 8:15. C. At 8:30.
4. Where are the two speakers now?
A. At home.B. At a cinema.C. At a zoo.
5. What does the woman suggest the man do?
A. Get some medicine.
B. Have something to eat.
C. Take a walk.
第二节 听下面5段对话或独白。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. Where did the man learn English?
A. In China.B. In Britain. C. In the United States.
7. Why did the man go to the United States?
A. For business. B. For holidays.C. For a meeting.
听下面一段对话,回答第8和第9两个小题。
8. How long has the restaurant served breakfast?
A. About 6 years. B. About 16 years.C. About 60 years.
9. What will Betty probably try?
A. Fried eggs.B. Fresh fruit. C. French toast.
听下面一段对话,回答第10至第12三个小题。
10. How does the woman feel about the man’s new computer?
A. Surprised.B. Envious. C. Interested.
11. What can we learn about the man? A. He bought a computer for the woman a year ago.
B. He pays much attention to products in high technology.
C. He always buys expensive computers.
12. What does the woman use her computer for?
A. Watching TV. B. Chatting online.C. E-mailing.
听下面一段对话,回答第13至第16四个小题。
13. Why does the man see the woman?
A. He feels uncomfortable.
B. His wife is weak.
C. He has trouble with his wife.
14. When did the man have a small operation?
A. Three years ago. B. Last year. C. Six months ago.
15. What does the woman think the man’s problem is?
A. His job. B. His wife. C. His operation.
16. What do we know about the woman?
A. She isn’t fit for her job.
B. She didn’t give the man any examination.
C. She will give the man further examination.
听下面一段独白,回答第17至第20四个小题。
17. Why did Mr. Grey like walking from the station to his office?
A. To take some fresh air.
B. To get some exercise.
C. To meet all sorts of people.
18. What happened to Mr. Grey several years ago?
A. He was robbed.
B. He gave some money to a stranger. C. He borrowed some money from a stranger.
19. What was the purpose of Mr. Grey’s behavior?
A. To avoid unnecessary trouble.
B. To buy a ticket for the stranger.
C. To help the stranger start his career.
20. Why did the stranger stop Mr. Grey this time?
A. To borrow some money.
B. To thank him. C. To return the money.
第二部分: 阅读理解(共两节,满分35分)
第一节:阅读理解(每小题2.5分,满分25分) 阅读下列短文,从每题所给的A、B、C、D四个选项中,选出最佳选项,并在答题纸上将该项涂黑。
A Some time ago, a man punished his 5-year-old daughter for wasting a roll of expensive gold wrapping paper. Money was tight and he became more upset when the child tried to decorate a box to put under the Christmas tree.
Nevertheless, the little girl brought the gift box to her father next morning and said, “This is for you, daddy.” The father was embarrassed by his earlier overreaction, but
his anger flared again when he found the box empty. He spoke to her in a harsh manner, “Don't you know, young lady, when you give someone a present there's supposed to be something inside the package?”
The little girl looked up at him with tears in her eyes and said, “Oh Daddy, it is not empty. I blew kisses into it until it was full." The father was crushed. He fell on his knees and put his arms around his little girl and he begged her to forgive his unnecessary anger.
An accident took the life of the child only a short time later and it is told that the father kept the golden box by his bed for all the years of his life and whenever he was discouraged or faced difficult problems, he would open the box and take out an imaginary kiss and remember the love of the child who had put it there.
In a very real sense, each of us as human beings has been given a golden box filled with unconditional love and kisses from our children, family friends and God. There is no more precious possession anyone can hold.
21. The father punished his 5-year-old daughter for wasting a roll of gold wrapping paper because_________
A. it was too expensive for the family
B. gold wrapping paper was hard to find at that time
C. she wasted too much while wrapping the gift package D. she got the gold wrapping paper without permission
22. When the little girl brought the gift box to her father, _____
A. the father was cheerful
B. the father was very ashamed
C. the father was very natural in behavior
D. the father was very angry at the cheap gift
23. Through Paragraph 4, the author intends to show____ A. the daughter’s sudden death
B. the meaning of his daughter’s gift to him
C. the father’s coldness leads to his misfortune
D. the father’s suffering after his daughter died
B
As children enter their teens, they usually begin to pay more attention to their peers (同龄人) or friends. Peer pressure can be direct or indirect, but it is almost always present. Learning to deal with peer pressure makes a teen mature (成熟的), and able to get along well with others.
Bad peer pressure is when teens feel pressured to do something that they know is wrong, such as smoking, drinking, or drugs, and it can remain with them into adulthood. This is the main reason teens have to learn how to deal with it.
Some of the things you can do to deal with peer pressure include:
● Choose friends who share your values. Good friends use positive peer pressure to help you be your best self.
● Keep away from situations where people are doing things you don’t want to do. ● Think about your reasons for doing things. Are they good reasons? Are you being true to yourself and your values?
● Practice ways of saying no, giving excuses if necessary.
● Talk to your parents, or other trusted adults, about the kinds of peer pressure you face, and listen to their advice.
● Let the adults know when you need help to get out of a bad situation, and don’t know what to do about it.
Remember that if just one teen stands up to (对抗) peer pressure, usually others will join him or her. Learning to deal with peer pressure will make you confident and mature.
24. According to the passage, which of the following is true?
A. Peer pressure includes direct and indirect pressure.
B. Peer pressure comes from smoking, drinking and using drugs.
C. Teens facing pressure can’t tell right from wrong.
D. Teens who face pressure are more mature than those who don’t
25. Teens should learn to deal with peer pressure mainly because ______.
A. it can keep them from making serious mistakes
B. it can influence them even when they have grown up
C. learning to deal with it can help them get along well with others
《2017年桂平市第二中学录取名单公布》出自:百味书屋
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