当前位置:文档之家› 30天高考英语词汇特训专题(第20天)打印版

30天高考英语词汇特训专题(第20天)打印版

30天高考英语词汇特训专题(第20天)打印版
30天高考英语词汇特训专题(第20天)打印版

30天高考英语词汇特训专题(第20天)

为助大家高考英语一臂之力,我正在每天给大家推送一些核心单词及重点短语的知识点,持续30天,即《30天高考英语词汇特训专练》,本专题含四个部分:核心单词、重点短语、写作句式和我读我练。今天是第20天,让我们开始学习吧!

内容:本专题含四个部分:核心单词、重点短语、写作句式和我读我练。现在,我们开始第1天的学习吧!

方法:一:核心单词:先读5遍,然后以五个单词为一个单位:看着英语写汉语,看着汉语写英语。

二:重点短语:读5遍。

三:写作句式:在笔记本上抄写一遍。

四:我读我练:Ⅰ. 词汇应用:读的同时要把每个句子在脑海中译成中文。

(不认识的生词和短语查词典)

Ⅱ. 句式仿写:先抄在笔记本上,然后口头背下来,并且要背写下来。

时间:早读进行:核心单词、重点短语;午休前:写作句式

晚自习:我读我练

一. 核心单词

1. performance [p??f??m?ns] n.[C]演出,表演;[U]履行,执行

2. period [?p??r??d]n.时期,时代

3. permanent [?p??m?n?nt] adj.永久的;持久的

4. permission n.允许,许可,同意

5. personally adv.就自己而言

6. persuade vt.说服,劝说

7. phenomenon (pl.phenomena) n.现象

8. physical [?f?z?k(?)l] adj.物理学的;身体的;物质的

9. pianis t['p??n?st]n.钢琴家

10. picnic [?p?kn?k] n.[C] 野餐,野餐食物 vi.(picnicked, picnicking) (去)野餐,举行野餐

11. plain [ple?n]n.平原;平地;旷野 adj.平坦的;简单的;朴素的;清晰的

12. platform [?pl?tf??m] n.平台;站台;讲台

13. pleasant [?plez?nt] adj.令人愉快的,舒适的

14. polite [p??la?t]adj.有礼貌的,有教养的

15. politician [p?l??t??(?)n] n.政治家

16. pollution [p??lu??(?)n]n.污染

17. popular [?p?pj?l?(r)] adj.流行的,受欢迎的

18. portable [?p??t?b(?)l] adj.手提式的

19. position [p??z??(?)n] n.位置

20. positive[?p?z?t?v] adj.确信的;明确的;积极的,肯定的;正的,阳性的

21. possession [p??ze?(?)n] n.所有,拥有;财产,所有物

22. possibility[p?s??b?l?t?]n.可能,可能性

23. postpone [p??st?p??n vt.推迟,延期

24. potential [p??ten?(?)l] adj.可能的;潜在的 n.潜力

25. poverty ['p?v?t?] n.贫穷

二. 重点短语

1. in company with 与……一起

in conflict with 与……冲突

in common with 与……有共同之处

in connection with 与……有联系

in cooperation with 与……合作

in harmony with 与……和睦相处/协调一致

2. in/out of condition 健康状况好/不好;保存(养)得好/不好

on condition that... 如果……;在……条件下

on this/that condition 在这种/那种情况下

三. 写作句式

强调句型

1. (2016·北京高考书面表达) It was his continuous efforts that caused China to change gradually.

正是他的不懈努力使得中国逐渐发生变化。

2. (2015·江苏高考书面表达) But rules alone don’t secure an orderly society. It is the people who obey the rules that matter.

但是制度本身不能保证一个有秩序的社会,遵守规则的人才是重要的。

四. 我读我练

Ⅰ. 词汇应用

2. To cut down PM 2.5 is a tough task. Cities have to consider economic development while dealing with air pollution(污染).

3. Your performance (perform) as a student will be excellent if you develop a habit of learning by yourself.

from the noise and worry of the outside world.

Ⅱ. 句式仿写

1. 正是你的帮助和热心让我在英国的学习和生活既特别又快乐。

It was your help and kindness that made my study and life in the UK special and enjoyable.

2. 只有通过倾听和相互理解,孩子和父母之间的问题才可能被解决。

It is only by listening to and understanding each other that problems between parents and children can be settled.

3. 尽管戒烟对我父亲来说很难,他有30年的烟龄,但最终他确实戒掉了。

It was very difficult for my father to quit smoking, who smoked for 30 years, but in the

高考数学真题分类汇编专题不等式理科及答案

专题七 不等式 1.【2015高考四川,理9】如果函数()()()()21 281002 f x m x n x m n = -+-+≥≥, 在区间122?????? ,上单调递减,则mn 的最大值为( ) (A )16 (B )18 (C )25 (D )812 【答案】B 【解析】 2m ≠时,抛物线的对称轴为82n x m -=--.据题意,当2m >时,8 22 n m --≥-即212m n +≤ .26,182 m n mn +≤ ≤∴≤Q .由2m n =且212m n +=得3,6m n ==.当2m <时,抛物线开口向下,据题意得,81 22 n m -- ≤-即218m n +≤ .281 9,22 n m mn +≤ ≤∴≤Q .由2n m =且218m n +=得92m =>,故应舍去.要使得mn 取得最大值,应有218m n +=(2,8)m n <>.所以 (182)(1828)816mn n n =-<-??=,所以最大值为18.选B.. 【考点定位】函数与不等式的综合应用. 【名师点睛】首先弄清抛物线的开口方向和对称轴,结合所给单调区间找到m 、n 满足的条件,然后利用基本不等式求解.本题将函数的单调性与基本不等式结合考查,检测了学生综合运用知识解题的能力.在知识的交汇点命题,这是高考的一个方向,这类题往往以中高档题的形式出现. 2.【2015高考北京,理2】若x ,y 满足010x y x y x -?? +??? ≤, ≤,≥,则2z x y =+的最大值为( ) A .0 B .1 C . 3 2 D .2 【答案】D 【解析】如图,先画出可行域,由于2z x y = +,则11 22 y x z =- +,令0Z =,作直线1 2 y x =- ,在可行域中作平行线,得最优解(0,1),此时直线的截距最大,Z 取

2020高考数学专题复习----立体几何专题

空间图形的计算与证明 一、近几年高考试卷部分立几试题 1、(全国 8)正六棱柱 ABCDEF -A 1B 1C 1D 1E 1F 1 底面边长为 1, 侧棱长为 2 ,则这个棱柱的侧面对角线 E 1D 与 BC 1 所成的角是 ( ) A 、90° B 、60° C 、45° D 、30° [评注]主要考查正六棱柱的性质,以及异面直线所成角的求法。 2、(全国 18)如图,正方形ABCD 、ABEF 的边长都是 1,而且 平面 ABCD 、ABEF 互相垂直,点 M 在 AC 上移动,点 N 在 BF C 上移动,若 CM=NB=a(0

的底面是边长为a的正方形,PB⊥面ABCD。 (1)若面PAD与面ABCD所成的二面角为60°, 求这个四棱锥的体积; (2)证明无论四棱锥的高怎样变化,面PAD与面 PCD所成的二面角恒大于90°。 [评注]考查线面关系和二面角概念,以及空间想象力和逻辑推理能力。 4、(02全国文22)(一)给出两块面积相同的正三角形纸片,要求用其中一块剪拼成一个正三棱锥模型,使它们的全面积都与原三角形面积相等,请设计一种剪拼法,分别用虚线标示在图(1)(2)中,并作简要说明。 (3) (1)(2) (二)试比较你剪拼的正三棱锥与正三棱柱的体积的大小。(三)如果给出的是一块任意三角形的纸片,如图(3)要求剪拼成一个直三棱柱模型,使它的全面积与给出的三角形面积相等,请设计一种剪拼方法,用虚线标出在图3中,并作简要说明。

2019-2020年高考英语高频词汇必背及训练8

2019-2020年高考英语高频词汇必背及训练8 adj.乐观的 We are still optimistic, whatever the result may be. 我们仍然乐观,不论结果如何。 The stockholders are optimistic about the pany's future.股东对公司的前景很乐观。 反义词:pessimistic adj.悲观的 Her pessimistic attitude turns him off. 她那悲观的态度令他很不高兴。 ________,she is the sort of woman to spread sunshine to people through her smile. A.Shy and cautious B.Sensitive and thoughtful C.Honest and confident D.Lighthearted and optimistic n. (1)气候 She is not used to living in a cold climate. 她不习惯寒带生活。 (2)(某一社会、时代的)风气,趋势;气氛,环境气氛 social climate 社会风气 political climate政治气候 the current climate of opinion目前的舆论环境 After the revolution,the climate of the country remained tense. 革命以后,那个国家的气氛依然紧张。 climate/weather辨析 climate:气候,指一个地区气候的总情况,如气温、降雨量等,还可指(社会)风气。weather:天气,指特定的一天或某个时节的天气的具体情况,如冷暖阴晴等。 What will the weather be like tomorrow 明天天气怎样 I would rather live in France because of the climate. 由于气候原因,我宁愿住在法国。 单项填空 (1)For the sake of her daughter's health,she decided to move to a warm________. A.weather B.temperature C.season D.climate (2)Although farmers there mainly grow wheat,the________is also warm enough to grow rice. A.criminal B.climate C.air D.sky (1)n.洪水,水灾(可数) The town was destroyed by the floods after the storm. 暴风雨过后,小镇被洪水淹没了。 (2)n.大批,大量流入 There was a flood of plaints about the poor service at the restaurant. 许多人投诉这家餐馆服务质量差劲。

高考英语词汇-分类整理资料

高考英语词汇分类大全 1 单词快速记忆的两种深加工方法: ①词根词缀构词法(适合于集中快速地记忆单词); ②Word Map 联想分类法(适合于集中快速地记忆 词); 2 使用本书时,可以把汉语意思遮盖,根据英语单词回忆汉语意思;或者把英语单词遮盖,根据汉语意思回忆英语单词。记不得的单词做上记号,或者记到一个小本子上,每天重复记忆。 3 强烈建议参考所给词汇素材在自己专用的词汇本上编写自己的word map 记忆图。 神经生理学家尤里-什德洛夫研究得出结论:要想记住单词,就需要重复练习,朗读或 默记都可以,至少重复160 次。如果记不住,这只是因为你偷懒,没下工夫。 School 学校 第一组 No1 subjects 有关科目的词汇curriculum n 课程course n 课程compulsory course n 必修课 optional course n 选修课 schedule n 课程表 school timetable n 课程表 mathematics(math)n 数学Algebra n 代数Arithmetic n 算术Geometry n 几何statistics n 统计学physics n 物理chemistry n 化学Chinese n 汉语English n 英语biology n 生物politics n 政治history n 历史

geography n 地理physical education(PE) n 体育music n 音乐art n 美术science n 科学philosophy n 哲学medicine n 医学engineering n 工程学 astronomy n 天文学 psychology n 心理学 economics n 经济学 finance n 金融学 law n 法学botany n 植物学 zoology n 动物学 No1.1 math 有关数学的词汇 count v 数数number n 数字add v 加addition n 加法subtract v 减去

高考数学大题练习

高考数学大题 1.(12分)已知向量a =(sin θ,cos θ-2sin θ),b =(1,2) (1)若a ⊥b ,求tan θ的值; (2)若a ∥b ,且θ为第Ⅲ象限角,求sin θ和cos θ的值。 2.(12分)在如图所示的几何体中,EA ⊥平面ABC ,DB ⊥平面ABC ,AC ⊥BC ,且AC=BC=BD=2AE ,M 是AB 的中点. (I)求证:CM ⊥EM: (Ⅱ)求DE 与平面EMC 所成角的正切值. 3.(13分)某地区为下岗人员免费提供财会和计算机培训,以提高 下岗人员的再就业能力,每名下岗人员可以选择参加一项培训、参加 两项培训或不参加培训.已知参加过财会培训的有60%,参加过计算机培训的 有75%.假设每个人对培训项目的选择是相互独立的,且各人的选择相互之间没有影响. (Ⅰ)任选1名下岗人员,求该人参加过培训的概率; (Ⅱ)任选3名下岗人员,求这3人中至少有2人参加过培训的概率. 4.(12分) 在△ABC 中,∠A .∠B .∠C 所对的边分别为a .b .c 。 若B A cos cos =a b 且sinC=cosA (1)求角A .B .C 的大小; (2)设函数f(x)=sin (2x+A )+cos (2x- 2C ),求函数f(x)的单调递增区间,并指出它相邻两对称轴间的距离。 5.(13分)已知函数f(x)=x+x a 的定义域为(0,+∞)且f(2)=2+22,设点P 是函数图象上的任意一点,过点P 分别作直线y=x 和y 轴的垂线,垂足分别为M ,N. (1)求a 的值; (2)问:|PM|·|PN|是否为定值?若是,则求出该定值, 若不是,则说明理由: (3)设O 为坐标原点,求四边形OMPN 面积的最小值。 6.(13分)设函数f(x)=p(x-x 1)-2lnx,g(x)=x e 2(p 是实数,e 为自然对数的底数) (1)若f(x)在其定义域内为单调函数,求p 的取值范围; (2)若直线l 与函数f(x),g(x)的图象都相切,且与函数f(x)的图象相切于点(1,0),求p 的值; (3)若在[1,e]上至少存在一点x 0,使得f(x 0)>g(x 0)成立,求p 的取值范围.

高三英语专题训练(词汇练习)

广东省2011届高三英语专题训练(词汇练习) 易错词汇练习 1.If you practise it _________ (repeat) , you will have a good command of it . 2.They are trying to find evidence of the _________ (exist) of this kind of rare animal. 3. This is the __________ (twenty) anniversary of the great event. 4. You can see lots of ________ (bacterium) in the food through a telescope. 5.__________ (theory), you can take three of them with you at a time. 6.He lied to the policemen to escape ________ (punish). 7.__________ (hope), all the nations came to help the victims in the earthquake. 8.Shooting, __________ (origin) as a means of survival, developed into a sport only in the late 19th century. 9.He put on so much ________ ( weigh) that he found it difficult to climb the stairs. 10. Some art _______ (history) doubt whether the London paintings hold this much documentary evidence. 11.There was a ______ (die) silence before the doors opened and the men started to step out. 12. The taxi driver was badly hurt and still _________ after the accident, but his daughter was ___________ and was smiling to us __________. (conscious) 13. They supplied a lot of advanced _________ to the school with the hope that the students can be _________ with knowledge and in the future they can make contributions to nation. (equip) 14. The victim __________the criminal carefully to the police. They soon caught him according to the victim’s __________. (describe). 15.As a shipbuilder, Cooker was trying to find a _________ to the problem of the wave resistance. After many trials, he finally _________ the problem. (solve) 16. She pursued her ____in another country, ______, he found that it turned for worse. (fortunate) 17. Only when you overcome your own fears will you ________ (success). 18. It not only broadens our minds, but also _____ (rich) our life during summer vacation. 19. According to a new study, it may be much more _______ (benefit) to human body than we have imagined. 20. What’s the _______ (long) and ________ (wide) of our classroom? 21. He is late. He is _________ (probable) stuck in a traffic jam. 22. Agricultural work is traditionally seen as a male __________ (occupy). 23. Only two of the applicants had the necessary _______________ (qualify) 24. ______________ (employ) among graduates is increasing because they lack work experience. 25. Her ___________ was purely ______________ scientific (curious). 26. After 25 years the town centre had changed beyond all __________(recognize). 27. Children should learn how to protect themselves to avoid __________(occur) of accidents. 28. His teachers told him to stick to his study, or he'd ________(doubt) fail his exam. 29. His_________(annoy) kid made him_________(annoy) a lot. 30. When someone catches a cold, signs of cough and ___________(breath) are common. 31. Your________(belief) are very powerful and have the power to create or to destroy your life. 32. Though John is a person with ________(able), his strong will still ___________(able) him to overcome many difficulties. 33. Many people benefited from his countless __________(generous) 34. _______( beg) can’t be c hoosers. 35. She has played a ___________(decide) role in the peace negotiation. 36. His hesitation indicates __________(will). 37. Women increasingly went out to work, usually out of economic ________(necessary). 38. They delight small children because they have strong rhythm and rhyme and have a lot of __________(repeat). 39. In the winter the total absence of sunlight can be __________(tire),and for some, depressing. 40.Anna will be remembered for his effective management and personal diplomacy, and his____________(warm) and charm. 41. If there were no bad people, there would be no good__________(law). 42. It is a very effective way to learn the language and improve your __________ (pronounce) and intonation. 43.Many people are ___(picnic) on the river bank.

英语词汇分类大全2016--(一)时间类

英语词汇分类大全2016 <一> 时间类[time] 年year 月month 日day 昨天yesterday 今天today 明天tomorrow 前天the day before yesterday 后天the day after tomorrow 上午morning;A.M.(a.m.)(ante meridiem) 中午,正午noon;meridiem 下午afternoon;P.M.(p.m.)(post meridiem) 傍晚evening 夜晚night 午夜midnight 今晚tonight 时hour 分minute 秒second 刻,刻钟quarter,a quarter 季,季节season 春spring 夏summer 秋autumn;fall 冬winter 周week 星期一MON,Monday 星期二TUE,Tuesday 星期三WED,Wednesday 星期四THU,Thursday 星期五FRI,Friday 星期六SAT,Saturday 星期天SUN,Sunday 周末weekend 上周the last week 下周the next week 一月JAN,January

二月DEB,February 三月MAR,March 四月APR,April 五月May 六月JUN,June 七月JUL,July 八月AUG,August 九月SEP,September 十月OCT,October 十一月NOV,November 十二月DEC,December —— —— —— —— ————————————————————————————————————2016,Zoe

高考理科数学数学导数专题复习

高考理科数学数学导数专题复习

高考数学导数专题复习 考试内容 导数的背影.导数的概念.多项式函数的导数. 利用导数研究函数的单调性和极值.函数的最大值和最小值.证明不等式恒成立 考试要求: (1)了解导数概念的某些实际背景. (2)理解导数的几何意义. (3)掌握常用函数导数公式,会求多项式函数的导数. (4)理解极大值、极小值、最大值、最小值的概念,并会用导数求多项式函数的单调区间、极大值、极小值及闭区间上的最大值和最小值. (5)会利用导数求某些简单实际问题的最大值和最小值. (6)会利用导数证明不等式恒成立问题及相关问题 知识要点 导数导数的概念 导数的运算 导数的应用 导数的几何意义、物理意义 函数的单调性 函数的极值 函数的最值 常见函数的导数 导数的运算法则

1. 导数(导函数的简称)的定义:设0x 是函数)(x f y =定义域的一点,如果自变量x 在0x 处有增量x ?,则函数值y 也引起相应的增量)()(00x f x x f y -?+=?;比值 x x f x x f x y ?-?+= ??) ()(00称为函数)(x f y =在点0x 到x x ?+0之间的平均变化率;如果极限x x f x x f x y x x ?-?+=??→?→?)()(lim lim 0000存在,则称函数)(x f y =在点0x 处可导,并把这个极限叫做)(x f y =在0x 处的导数,记作)(0'x f 或0|'x x y =,即 )(0'x f =x x f x x f x y x x ?-?+=??→?→?)()(lim lim 0000. 注: ①x ?是增量,我们也称为“改变量”,因为x ?可正,可负,但不为零. ②以知函数)(x f y =定义域为A ,)('x f y =的定义域为B ,则A 与B 关系为B A ?. 2. 函数)(x f y =在点0x 处连续与点0x 处可导的关系: ⑴函数)(x f y =在点0x 处连续是)(x f y =在点0x 处可导的必要不充分条件. 可以证明,如果)(x f y =在点0x 处可导,那么)(x f y =点0x 处连续. 事实上,令x x x ?+=0,则0x x →相当于0→?x . 于是)]()()([lim )(lim )(lim 0000 00 x f x f x x f x x f x f x x x x +-+=?+=→?→?→ ). ()(0)()(lim lim ) ()(lim )]()()([ lim 000'0000000000 x f x f x f x f x x f x x f x f x x x f x x f x x x x =+?=+??-?+=+???-?+=→?→?→?→?⑵如果)(x f y =点0x 处连续,那么)(x f y =在点0x 处可导,是不成立的. 例:||)(x x f =在点00=x 处连续,但在点00=x 处不可导,因为x x x y ??= ??| |,当x ?>0时,1=??x y ;当x ?<0时,1-=??x y ,故x y x ??→?0lim 不存在. 注: ①可导的奇函数函数其导函数为偶函数. ②可导的偶函数函数其导函数为奇函数. 3. 导数的几何意义和物理意义:

最新高考数学压轴题专题训练(共20题)[1]

1.已知点)1,0(F ,一动圆过点F 且与圆8)1(2 2 =++y x 内切. (1)求动圆圆心的轨迹C 的方程; (2)设点)0,(a A ,点P 为曲线C 上任一点,求点A 到点P 距离的最大值)(a d ; (3)在10<

3.已知点A (-1,0),B (1,0),C (- 5712,0),D (5712 ,0),动点P (x , y )满足AP →·BP → =0,动点Q (x , y )满足|QC →|+|QD →|=10 3 ⑴求动点P 的轨迹方程C 0和动点Q 的轨迹方程C 1; ⑵是否存在与曲线C 0外切且与曲线C 1内接的平行四边形,若存在,请求出一个这样的平行四边形,若不存在,请说明理由; ⑶固定曲线C 0,在⑵的基础上提出一个一般性问题,使⑵成为⑶的特例,探究能得出相应结论(或加强结论)需满足的条件,并说明理由。 4.已知函数f (x )=m x 2+(m -3)x +1的图像与x 轴的交点至少有一个在原点右侧, ⑴求实数m 的取值范围; ⑵令t =-m +2,求[1 t ];(其中[t ]表示不超过t 的最大整数,例如:[1]=1, [2.5]=2, [-2.5]=-3) ⑶对⑵中的t ,求函数g (t )=t +1t [t ][1t ]+[t ]+[1t ]+1的值域。

高考英语重点词汇填空专项练习题

高考英语重点词汇填空专项练习 请根据句意和汉语提示填入一个恰当的英语单词(注意形式)。 1. Prices have risen steadily during the past _________(十年), namely from 2005 to now. 2. His interest in this subject gradually _________(减少) because he dislikes the new teacher. 3. Such _________(装饰品) is a typical feature of the new year festival. 4. It was not long before the ________(潮湿的) clothes dried up in the sun. 5. I must apologize for the ________(延误) in writing back to you. 6. I am much __________(高兴) to be present at the lecture and to give you a speech. 7. The thin mailman _________(递送) letters and parcels from door to door every morning. 8. Our headteacher _________(要求) we get to the classroom before half past six in the morning. 9. He had been suffering from toothache for a few days before he went to see a _________(牙医). 10. The hero should _________ (值得/应得) praise and a reward for his brave behavior. 11. It’s admitted that everyone _________(期望/想要) to live in a world free of wars and starvation. 12. If you don’t speak good English, you will be at a big _________(劣势) when seeking a job. 13. There was a ________(失望的) look on his face when he failed to pass the driving test again. 14. Our school _________(阻止/使气馁) us from staying up late to study. 15. Every day after I get up, I _______(给……穿衣服) my son and then wash his hands and face. 16. So _________(满是灰尘的) is the window that I can’t see anything clearly outside. 17. I _______(捐赠) my blood for free each year with the hope of helping those people in need. 18. He works hard, but he does not ______(赚/挣) much money to support his family. 19. I go all out for my ideal university, for I think nothing is more important than ________(教育). 20. What is certain is that every ________(结果) must have a cause. 21. I work hard to improve my English, believing that my ________(努力) will pay off soon. 22. There are four _________(紧急情况) exits in the department store in all. 23. To save money, many shops prefer to ________(雇佣) students during summer vacation. 24. Without your _________(鼓励), I would have given up learning and dropped out of school. 25. When asked why she remained single all the time, she felt a bit _________(尴尬). 26. Some people are tired of living on the earth and want to ________ (体验) the life on Mars. 27. With the College E Examination coming, we are under great pressure. 28. Mr. Smith is an ________(专家) on foreign language teaching. 29. Only by practicing a lot can you speak (流利的) English. 30. She had the f the other day and she went to see a doctor. 31. He is so poor that he can’t afford to buy the ________ (昂贵的) furniture. 32. The whole building was in ________(火焰) and it took two hours to put out the great fire. 33. As the saying goes, f is the mother of success. 34. We should try our best to create a better living ________ (环境). 35. Mr. Wang often encourages me to join in more activities to ________ (丰富) my

1997年全国统一高考数学试卷(理科)

1997年全国统一高考数学试卷(理科) 参考答案与试题解析 一、选择题(共15小题,1-10每小题4分,11-15每小题5分,满分65分)1.(4分)设集合M={x|0≤x<2},集合N={x|x2﹣2x﹣3<0},集合M∩N=() A .{x|0≤x< 1} B . {x|0≤x< 2} C . {x|0≤x≤1}D . {x|0≤x≤2} 考点:交集及其运算. 分析:解出集合N中二次不等式,再求交集. 解答:解:N={x|x2﹣2x﹣3<0}={x|﹣1<x<3},∴M∩N={x|0≤x<2},故选B 点评:本题考查二次不等式的解集和集合的交集问题,注意等号,较简单.2.(4分)如果直线ax+2y+2=0与直线3x﹣y﹣2=0平行,那么实数a等于() A .﹣6 B . ﹣3 C . D . 考点:直线的一般式方程与直线的平行关系. 专题:计算题. 分析: 根据它们的斜率相等,可得=3,解方程求a的值.解答:解:∵直线ax+2y+2=0与直线3x﹣y﹣2=0平行, ∴它们的斜率相等,∴=3,∴a=﹣6. 故选A. 点评:本题考查两直线平行的性质,两直线平行,斜率相等.3.(4分)函数y=tan()在一个周期内的图象是() A .B . C . D . 考点:正切函数的图象. 专题:综合题. 分析:先令tan()=0求得函数的图象的中心,排除C,D;再根据函数y=tan() 的最小正周期为2π,排除B. 解答:解:令tan()=0,解得x=kπ+,可知函数y=tan()与x轴的一个交点不是,排除C,D

∵y=tan()的周期T==2π,故排除B 故选A 点评:本题主要考查了正切函数的图象.要熟练掌握正切函数的周期,单调性,对称中心等性质.4.(4分)已知三棱锥P﹣ABC的三个侧面与底面全等,且AB=AC=,BC=2.则二面角P﹣BC ﹣A的大小为() A .B . C . D . 考点:平面与平面之间的位置关系;与二面角有关的立体几何综合题. 专题:计算题. 分析:要求二面角P﹣BC﹣A的大小,我们关键是要找出二面角P﹣BC﹣A的大小的平面角,将空间问题转化为平面问题,然后再分析二面角P﹣BC﹣A的大小的平面角所在的三角形的 其它边与角的关系,解三角形进行求解. 解答:解:如图所示,由三棱锥的三个侧面与底面全等, 且AB=AC=, 得PB=PC=,PA=BC=2, 取BC的中点E,连接AE,PE, 则∠AEP即为所求二面角的平面角. 且AE=EP=, ∵AP2=AE2+PE2, ∴∠AEP=, 故选C. 点评:求二面角的大小,一般先作出二面角的平面角.此题是利用二面角的平面角的定义作出∠AEP为二面角P﹣BC﹣A的平面角,通过解∠AEP所在的三角形求得∠AEP.其解题过 程为:作∠AEP→证∠AEP是二面角的平面角→计算∠AEP,简记为“作、证、算”.5.(4分)函数y=sin()+cos2x的最小正周期是() A .B . πC . 2πD . 4π 考点:三角函数的周期性及其求法. 分析:先将函数化简为:y=sin(2x+θ),即可得到答案. 解答: 解:∵f(x)=sin()+cos2x=cos2x﹣sin2x+cos2x=(+1)cos2x﹣sin2x =sin(2x+θ) ∴T==π

2020高考数学专题训练16

六) 题号 1 2 3 4 5 6 7 8 9 10 11 12 答案 1.满足条件?≠?M ≠?{0,1,2}的集合共有( ) A .3个 B .6个 C .7个 D .8个 2.等差数列}{n a 中,若39741=++a a a ,27963=++a a a ,则前9项的和9S 等于( ) A .66 B .99 C .144 D .297 3.函数)1(log 2-=x y 的反函数图像是( ) A B C D 4.已知函数)cos()sin()(??+++=x x x f 为奇函数,则?的一个取值为( ) A .0 B .4 π - C .2π D .π 5.从10种不同的作物种子中选出6种放入6个不同的瓶子中展出,如果甲、乙两种种 子不能放入第1号瓶内,那么不同的放法共有( ) A .4 82 10A C 种 B .5 91 9A C 种 C .5 91 8A C 种 D .5 81 8A C 种 6.函数512322 3 +--=x x x y 在[0,3]上的最大值、最小值分别是( ) A .5,-15 B .5,-4 C .-4,-15 D .5,-16 7.已知9)222(-x 展开式的第7项为4 21 ,则实数x 的值是( ) A .31- B .-3 C .4 1 D .4 8.过球面上三点A 、B 、C 的截面和球心的距离是球半径的一半,且AB =6,BC =8, AC =10,则球的表面积是( ) A .π100 B .π300 C . π3100 D .π3 400 9.给出下面四个命题:①“直线a 、b 为异面直线”的充分非必要条件是:直线a 、b 不相交;②“直线l 垂直于平面α内所有直线”的充要条件是:l ⊥平面α;③“直线a ⊥b ”的充分非必要条件是“a 垂直于b 在平面α内的射影”;④“直线α∥平面β”的必要非充分条件是“直线a 至少平行于平面β内的一条直线”.其中正确命题的个数是( )

(word完整版)高考英语专题训练营每日高频词汇一.docx

高考训练营:每日高频词汇一 1.In this factory, suggestions often have to wait for months before they are fully _____. A.admitted B.acknowledged C.absorbed D.considered [ 答案 ] D. considered [ 注释 ] considered考虑;admit 承认; absorb 吸收。 [ 注意 ] acknowledge 1) (=agree or admit the truth of; confess) 承认,供认; A. He acknowledged his mistake. ( 他承认了他的错误。 ) B. 接动名词He acknowledged having beenbeaten. (他承认被打败了。) 2) (express thanks for)致谢; A. Mary acknowledged the gift with a pleasant letter. ( 玛丽致函感谢馈赠的礼 物。 ) B. His long service with the company was acknowledged with a present. ( 向他赠送礼品以感谢他长期来对公司的服务。 ) 2.The boy slipped out of the room and headed for the swimming pool without his parents' _____. A. command B. conviction C. consent D. compromise [ 答案 ] C. consent [ 注释 ] consent同意,赞成,答应。conviction深信,确信。compromise妥协,折中。 command 命令,指令;掌握,运用能力。 3.Our research has focused on a drug which is so _____ as to be able to change brain chemistry. A. powerful B. influential C. monstrous D. vigorous

最新最全高考英语词汇分类记忆大全

高考英语词汇分类记忆 1.People 1. baby 婴儿 2. being物;生物;人 3. child(复children) n. 孩子,儿童 4. citizen 公民,居民,市民 5. civil国内,平民(非军人)的;民用 6. companion同伴,同事 7. comrade n. 同志 8. crowdn..人群vt. 拥挤,群聚 9. enemy n. 敌人;敌军 10. fellow n. 同伴;伙伴 11. friend[frend] n. 朋友 12. generation n.代,一代 13. guest n. 客人,宾客 14. human a.&n. 人,人类 15. humanbeing 人 16. man (单数,无冠词) n.人,人类(包括男女) 17. neighbour(-bor) n.邻居,邻人 18. partner n. 搭档,股东,舞伴 19. people n. 人,人们;人民 20. personn. 人, 身体, 容貌,

21. population n. 人口 22. publica.公共的,公众n.公众 23. race[reis] n. 种族,民族 24. teenager (13-19)青少年 25. adult 26. kid 2.Sex 1. boyn. 男孩 2. female a. 女性的;雌性的 3. girl n. 女孩 4. gentlemann. 绅士,先生 5. ladyn. 女士,夫人 6. sex[seks] n. 性,性别, 7. madam/madame夫人,女士 8. male[meil] a. 男的, 雄的, 男 9. man (men) n.男人,成年男子 10. Mr. (mister) n.先生, 阁下 11. Mrs.(mistress)夫人, 太太 12. Ms.[miz] n. 女士, 小姐 13. sirn. 先生;阁下 14. woman n. 妇女,女人,女仆

相关主题
文本预览
相关文档 最新文档