嘉峪关市酒钢三中2017-2018 第一学期高一第一次考试 含答案

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甘肃省嘉峪关一中2017-2018学年高一上学期期末考试语文试卷

甘肃省嘉峪关一中2017-2018学年高一上学期期末考试语文试卷

嘉峪关市一中2017-2018学年第一学期期末考试高一语文试卷命题:张海第I卷阅读题(75分)一、现代文阅读(35分)(一)文本阅读之一。

阅读下面的文字,完成1-3题。

(9分)谁来加厚信息时代的文化土层打开微信“朋友圈”,就能看到一个完整的文化微缩景观:既有“小清新”,也有“情怀党”;既能看到古典乐迷的“高大上”,也能看到各种“非主流”……每个人都有着不同的价值偏好和审美趣味,他们是文化景观的观看者,也是文化风尚的制造者。

然而,新技术的生死时速,是否也会纵容“所见即所得”的肤浅,带来“既得繁花,亦生野稗”的乱象?已经有人痛心于文化空气的日益稀薄,甚至认为中国正在进入文化上的“小时代”。

图书馆修得越来越好,好书和读书人却越来越少。

难怪有人疾呼,从电脑和手机中拯救我们的阅读吧!甚至有人说,拔掉网线,关闭手机,才能回到真正的文化生活。

事实上,翻阅近几个世纪的文化史,几乎每一次技术手段的升级,都会引起人们的文化焦虑。

海德格尔以哲人姿态发问:技术化的时代文明千篇一律,是否还有精神家园?美国学者罗斯扎克更是一针见血:相比在黄昏时分去附近的咖啡馆,网络真的能更有效地交流思想吗?哲人的忧思,倒是从另一个角度给出了历史的惯例:越是缺少文化话语权的草根,越能更早地拥抱新的文化场;越是在原有格局中掌握话语权的精英,越是更晚地接受新事物。

看看我们的互联网,微博是近6亿网友鼎力支撑的舆论广场,微信是无数中产白领激情互动的文化领地。

在抱怨新技术让信息碎片化、文化浅表化的同时,谁愿用理性的思维、专业的知识、人文的情怀,主动涵养席卷天下的网络文化?文化之河能否源远流长,乃是取决于“最低水位”,谁来为时代的文化河床筑土培基,加厚信息时代的文化土层?正如学者所说,当代中国正在“共时性”地经历着传统、现代与后现代。

人类历史上前所未有的快速现代化和城市化的进程,反映在文化领域,将使我们在相当长的时间内,注定要面对传统与现代并存、高雅与“低俗”共舞的现象。

甘肃省嘉峪关市一中2017-2018学年高三上学期第一次模拟考试数学(文)试题 Word版含答案

甘肃省嘉峪关市一中2017-2018学年高三上学期第一次模拟考试数学(文)试题 Word版含答案

嘉峪关市一中2017-2018学年高三第一次模拟考试数学(文科)一、选择题:(本大题共12小题,每小题5分,共60分)1.若集合{}21x x A =-<<,{}02x x B =<<,则集合A B = ( ) A .{}01x x << B .{}11x x -<< C .{}22x x -<< D .{}12x x << 2.已知i 是虚数单位,则131ii-+=( ) A .2i + B .2i - C .12i -- D .12i -+3.在C ∆AB 中,60A =,a =b = ) A .45B =B .135B =C .45B =或135D .以上答案都不对4.下列函数中,是偶函数,且在区间()0,+∞内单调递增的函数是( ) A .12y x = B .cos y x = C .ln y x = D .2xy = 5.设3212a=log 2b=log 3c=log 5,,,则( )A .c b a <<B .c a b << C. a c b << D .b c a <<6.向量a,b 满足1,)(2),==+⊥-a b a b a b 则向量a 与b 的夹角为( ) A .45︒ B .60︒ C . 90︒ D .120︒7. 已知βα,是两个不同的平面,m ,n 是两条不同的直线,给出下列:①若βαβα⊥⊂⊥,则m m ,; ②若βαββαα//,////,,则,n m n m ⊂⊂; ③如果ααα与是异面直线,那么、n n m n m ,,⊄⊂相交; ④若.////,//,βαβαβαn n n n m n m 且,则,且⊄⊄=⋂ 其中正确的是( )A .①②B .②③C .③④D .①④8.ABC ∆的内角A 、B 、C 的对边分别为a 、b 、c ,则“a b >”是“cos2cos2A B <”的( )A .充分不必要条件B .必要不充分条件C .充要条件D .既不充分也不必要条件9.已知21000:,10P x R x x ∃∈++<;[]22:1,2,10P x x ∀∈-≥.以下为真的是( ) A .()()12p p ⌝∧⌝B .()12p p ∨⌝C .()12p p ⌝∧D .12p p ∧10. 执行如图所示的程序框图,那么输出的S 为( ) A .3 B .12 C .43D .-211.若函数32()236f x x mx x =-+在区间()2,+∞上为增函数,则实数m 的取值范围是( )A .(),2-∞B .(],2-∞C .5,2⎛⎫-∞ ⎪⎝⎭ D .5,2⎛⎤-∞ ⎥⎝⎦ 12.函数()lg(1)sin2f x x x =+-的零点个数为( ) A .9 B .10 C .11 D .12二、填空题:(本大题共4小题,每小题5分,共20分)13.若向量)3,2(=,)6,(-=x ,且∥,则实数x =14.已知数列{}n a 为等差数列,1233a a a ++=,5679a a a ++=,则4a = 15.函数()lg 11x y x +=-的定义域为16.若函数()f x 满足: (ⅰ)函数()f x 的定义域是R ; (ⅱ)对任意12,x x ∈R 有121212()()2()()f x x f x x f x f x ++-=;(ⅲ)3(1)2f =. 则下列中正确的是____ _. (写出所有正确的序号)①函数()f x 是奇函数; ②函数()f x 是偶函数; ③对任意12,n n ∈N ,若12n n <,则12()()f n f n <; ④ 对任意x R ∈,有()1f x ≥-.三、解答题17. (本小题12分) 已知α为锐角,且12tan -=α,函数)42sin(2tan 2)(παα++=x x f ,数列{}n a 的首项11=a ,)(1n n a f a =+.DCBAFE(1)求函数)(x f 的表达式; (2)求数列{}n a 的前n 项和n S . 18.(本小题12分)如图,多面体ABCDEF 中,底面ABCD 是菱形, 60BCD ∠=,四边形BDEF 是正方形,且DE ⊥平面ABCD .(Ⅰ)求证: //CF 平面AED ;(Ⅱ)若AE =ABCDEF 的体积V .19.( 本小题12分) 某高校在2013年的自主招生考试成绩中随机抽取100名学生的笔试成绩,按成绩分组得到的频率分布表如下:(1)为了能选拔出优秀的学生,高校决定在笔 试成绩高的第三、四、五组中用分层抽样法抽取6名学生进入第二轮面试,试确定a ,b ,c 的值并求第三、四、五组每组各抽取多少名学生进入第二轮面试;(2)在(1)的前提下,学校决定在6名学生中随机抽取2名学生接受A 考官的面试,求第四组中至少有一名学生被A 考官面试的概率.20.(本小题满分12分)已知椭圆C:22221(0)M(2,0),x y a b a b +=>>定点 椭圆短轴的端点是B 1,B 2,且MB 1⊥MB 2。

甘肃省嘉峪关市一中2017-2018学年高一上学期期中考试化学试题 Word版含答案

甘肃省嘉峪关市一中2017-2018学年高一上学期期中考试化学试题 Word版含答案

嘉峪关市一中2017-2018学年第一学期期中考试高一化学试卷(满分:100分)第Ⅰ卷选择题(共48分)相对原子量:H-1 O-16 C-12 S-32 N-14 Na-23一、选择题(每小题2分,只有一个选项符合题意,共48分)1.危险化学品的包装标签上要印有警示性标志。

下列物质选用“腐蚀品”标志的是()A.汽油B.食盐C.浓硫酸D.炸药2.下列实验仪器不宜直接用来加热的是()A.试管B.坩埚C.蒸发皿D.烧杯3.实验室用自来水制取蒸馏水的方法是()A.过滤B.蒸馏C.萃取D.分液4. 胶体的最本质的特征是()A.丁达尔效应B.可以通过滤纸C.布朗运动D.分散质颗粒的直径在1nm~100nm之间。

5.下列实验操作均要用玻璃棒,其中玻璃棒的作用相同的是( )①过滤②蒸发③溶解④向容量瓶转移溶液A.①和②B.①和③C.③和④D.①和④6. 将下列各组物质按酸、碱、盐分类顺序排列,正确的是( )A 硫酸、纯碱、石灰石B 醋酸、烧碱、硫酸铜C 磷酸、熟石灰、苛性钾D 盐酸、酒精、醋酸钠7.下列化学实验操作或事故处理方法不正确的是()A.不慎将酸溅到眼中,应立即用水冲洗,边洗边眨眼睛B.不慎将浓碱溶液沾到皮肤上,要立即用大量水冲洗,然后涂上硼酸C.酒精灯着火时可湿抹布盖灭D.配制硫酸溶液时,可先在量筒中加入一定体积的水,再在搅拌条件下慢慢加浓硫酸8. 下列叙述正确的是()A. 铜丝能导电,所以铜是电解质。

B .氯化钠晶体不导电,所以氯化钠不是电解质。

C. 氯化氢水溶液能导电,所以氯化氢是电解质。

D. SO3溶于水能导电,所以SO3是电解质。

9.下列说法正确的是()A.1mol氧B.SO42-的摩尔质量是96gC.3mol小麦D.标准状况下,1molO2和N2混合气体的体积约为22.4L[ 10.下列对0.3mo1/LNa2SO4溶液叙述不正确的是(N A表示阿伏加德罗常数的值)( )A.1L溶液中含0.3N A个Na+B.1L溶液中含Na+和SO42-总数为0.9N AC. 2L溶液中含有0.6N A个SO42-D. 2L溶液中Na+的物质的量浓度为0.6mol/L11.下列常用实验仪器中,不能用于混合物的分离或提纯的是( )A.分液漏斗B.普通漏斗C.蒸馏烧瓶D.容量瓶12.下列溶液中的氯离子浓度与50 mL 1 mol·L-1的FeCl3溶液中氯离子浓度相等的是()A.150 mL 1 mol·L-1的NaCl B.75 mL 2 mol·L-1的NH4ClC.150 mL 3 mol·L-1的KCl D.75 mL 2 mol·L-1的CaCl213.下列叙述正确的是( )A.氢气的摩尔质量为2g。

甘肃省嘉峪关市一中2017-2018学年高三上学期第一次模拟考试英语试题 Word版含答案

甘肃省嘉峪关市一中2017-2018学年高三上学期第一次模拟考试英语试题 Word版含答案

嘉峪关市一中2017-2018学年高三第一次模拟考试英语试卷第一部分阅读理解(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。

AIf you have a bad habit of losing things, a new device that can be connected to any item that you might lose may be the way to solve your problem. The Tile, a small square linked up to your iPhone or iPad via Bluetooth, lets you see how close you are to the missing item, within a 50-to 150-foot range . If the item goes out of your phone’s 150-foot range, it can still be detected (发现) on other smartphones with the same app.When you log into the app on your phone, it shows you, with green bars that increase or decrease, how far away you are from the Tile. You can also program it to make a sound when you get close to the Tile. And you can link up your phone with up to ten Tiles. And if your lost item —a dog, for example, or a stolen bike —goes out of your own phone’s 150-foot Bluetooth range, you can set it as a “lost item”. If any of the phones with the Tile app comes within the r ange of your lost item, a message will be sent to your own phone, reminding you of its position. The Tile app also has the function to remember where it last saw your Tile, so that you can easily find where you left it.Since the Tiles use Bluetooth rather than GPS, they never run out of battery or need to be charged, and they last for one year before needing to be replaced. The app, which will come into the market this winter, works with iPhone 5S, iPhone 6, iPad Mini, iPad 3rd and 4th generation, and iPod 5th generation.1. The Tile app can help you .A. find your missing itemsB. use your phone more wiselyC. save your phone’s battery powerD. connect something to your phone2. Which of the following is TRUE according to the passage?A. The Tile needs to be charged after a year of use.B. One smartphone can only be linked up to one Tile.C. The Tile cannot work when linked up to a phone without Bluetooth.D. A missing item can’t be found if it goes out of the needed range.3. What does the second paragraph mainly tell us?A. What the Tile app is.B. How the Tile app works.C. The advantages of the Tile app.D. Why the Tile app was invented.4. Where does this passage probably come from?A. A science fiction novel.B. An advertisement.C. A personal diary.D. A news report.BThe island of Port Cros is in the south of France. I first visited it about ten years ago with my wife. I had read that it was a magical place and it seemed fascinating (迷人的), but I couldn’t believe that it was true. In fact, it was much more magical than the tourist brochures (指南) had said.The island is mountainous and covered in trees. The water around the island is transparent like glass. When I first visited it, there was mist rising from the trees. The little harbor looked mysterious and remote: tall palm trees, a few shops and restaurants, no cars, motorcycles or bikes.It is not by chance that the island has kept its natural beauty. Once, it was privately owned and the owners always wanted to keep it in its natural state. In 1963, Port Cros became a national park. The park directors made some rules to protect the island. They didn’t allow any new building projects. There is only one hotel and no camping is allowed. Visitors can’t use mountain bikes or smoke on the island. Sailing boats that visit the island mustn’t damage the bottom of the sea or pollute the water around it.When we arrived, we started walking to the beach of Port-Man, which was the furthest beach from the port. It took us two hours and when we arrived, the beach was deserted. It seemed that we were the only people on the island. Time seemed to stop. It was so beautiful that we stayed there all day. I visited there again last summer. Nothing had changed. The island still looked magical and mysterious, still with few tourists. It must be wonderful to stay the night on the island,I thought. After all the visitors have gone, the island must be so quiet—a real paradise (天堂)!5. The author got to know Port Cros at first due to _____.A. some tourist brochuresB. his wife’s introductionC. his first visit thereD. some TV programs6. How has the natural beauty of the island been kept according to the text?A. Foreign visitors are not allowed to visit it.B. Nothing has been built in the park there.C. Only bikes can be used on the island.D. Sailing boats mustn’t pollute the water.7. When the author first visited Port Cros, _____.A. it was very sunnyB. there were few visitors thereC. it took them a whole day to walk to Port-ManD. the island was deserted and he stayed there for a whole nightCCamp Jano IndiaCelebrate Indian culture, languages, arts, festivals and literature. Weekly themes arebrought to life through related arts, games, projects, stories and theatre in a very unique, exciting, creative, interactive (互动的) and structured style. A very unique and memorable (难忘的) experience that kids will want to repeat! Mornings are spent with the Hindi language at the child’s level. Afternoons provide the cultural elements taught in an interactive style with special emphasis (重点) on drama.Bay Language AcademyWe invite campers (4-12 years old) to travel and open up doors to explore past and recent civilizations through daily field trips. Cultures will be shown through customs and cooking. Lectures (6/10-8/30) will introduce/reinforce French, Spanish or Chinese and the cultures they convey. Our language summer-camp is infused (灌输) with cultural activities and taught by a team of bilingual (通晓双语的) instructors.Petits ConfettisWant your 3- to 5-year-old kids to experience a French camp? Come and join us for 6 weeks of French camps!Kids will be totally happy to learn French and French culture while they take part in team projects like building a tipi or making French bread. Weekly themes include cooking, arts, drama, outdoor activities, board games, music, yoga, rhymes and story time.Chinese Immersion Summer CampThis is our 11th Chinese language and culture summer camp. We take children from 6th grade. This year we continue the weekly fun themes like art, science, cooking and sports in the morning. In the afternoon, we have abacus, reading and Chinese culture lessons taught in Chinese. Our teachers are all native speakers with a lot of experience. Our weekly field trips go to different places like SF zoo, tech museums, fire stations etc.8. Camp Jano India can give children a memorable experience probably because ______.A. it has quite experienced teachersB. it teaches Indian languages at different levelsC. the activities are arranged for the whole dayD. the activities are carried on in an interesting style9. Bay Language Academy and Chinese Immersion Summer Camp are similar in that ______.A. they both provide field tripsB. they both have bilingual teachersC. they both provide sports programs in the morningD. they are both intended for kids of 4-12 years old10. A girl who likes yoga will go to ______.A. Camp Jano IndiaB. Bay Language AcademyC. Petits ConfettisD. Chinese Immersion Summer Camp11. What is the common theme of the four camps?A. Fun and sports.B. Travel and adventure.C. Language and culture.D. Art and music.DOn Sunday, August 24th, comic book lovers across the world held their breath to watch how much crazy collectors would pay for a rare Superman comic book. Though bids (出价) above the initial asking price of 1 million dollars had been coming in gradually since the copy was placed on the auction site (拍卖网站) eBay on July 14th, things really started to heat up during the final minutes when the price jumped from $2.5 to $2.6 and then $2.7 million, before shooting up to unbelievable 3,207,852 dollars!This of course was no ordinary Superman comic book, but an edition of the extremely sought-after (很吃香地) No. 1 of Action Comics series — the first publication of the superhero that was born from the creative minds of teenagers Joe Shuster and Jerry Siegel. Though Action Comics No. 1, which depicted a diaper-clad baby Superman lifting furniture, had a print run of 200,000 copies, only about 100 are known to exist today.While the rarity is certainly a reason for the high price, Stephen Fisher, CEO of , thinks it also has a lot to do with the fact that Superman was the world’s first superhero! Even so, none of the copies have been able to fetch(售得) as much as the most recent one, simply because they have not been as well-preserved. Graded a rare 9 out of 10 by CGC, a third party grading service for comic books, the book is the highest rated copy of Action Comics No. 1so far. According to CGC officials, the 76-year-old comic book looks and feels as though it has just come off the newsstand (报摊).That is not surprising given that the original owner, a Virginian man who bought the book for only 10 cents in 1938, had carefully tucked it away (藏起来) in a wooden box for four decades. Fortunately, when he passed away, the book was bought by a string of collectors who all realized it was a rare treasure that needed to be looked after.Before this, the highest price paid for an Action Comics No. 1 had been $2 million for a copy sold by Hollywood actor Nicholas Cage in 2011. Ironically, the two teenagers responsible for creating Superman received just 130 dollars when they sold the rights to the superhero to comic book publisher Detective Comics in 1938.12. When the Superman comic book was placed on eBay on July 14th, .A. it attracted no attention at allB. things started to heat up immediatelyC. the bid pric e didn’t go up very quickly at firstD. people thought it was worth millions of dollars13. What is Paragraph 3 mainly about?A. Why the comic book is well-preserved.B. Why the comic book is well worth reading.C. Why the comic book is worth so much money.D. Why the comic book has drawn so much attention.14. When the other collectors got the comic book after the Virginian man, they .A. all took very good care of itB. all liked reading it very muchC. didn’t believe it was wor th a fortuneD. all kept it in the same way as that man15. What do we know about the creators of Superman?A. They didn’t want to sell the rights to a comic book publisher.B. They knew all along Superman would be the most successful comic book.C. They were professional comic book writers when they created Superman.D. They didn’t make much money from creating Superman.第二节(共5小题;每小题2分,满分10分)根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。

2017年甘肃省嘉峪关市酒钢三中高一上学期物理期末试卷与解析

2017年甘肃省嘉峪关市酒钢三中高一上学期物理期末试卷与解析

2016-2017学年甘肃省嘉峪关市酒钢三中高一(上)期末物理试卷一.选择题(每小题4分共40分.1至7小题只有一个选项正确,8、9、10小题有多个选项正确,全部选对的得4分,选不全的得2分,有错选或不答的得0分)1.(4分)下列情况中的物体,哪些可以看作质点()A.研究从北京开往上海的一列火车的运行速度B.研究汽车后轮上一点运动情况的车轮C.体育教练员研究百米跑运动员的起跑动作D.研究地球自转时的地球2.(4分)下列关于力的说法中,正确的是()①力是不能离开施力物体和受力物体而独立存在的②力可以离开物体而独立存在③受力物体同时也是施力物体,施力物体同时也是受力物体④马拉车前进,马对车有拉力,但车对马没有拉力.A.①③B.①④C.②③D.②④3.(4分)一根轻绳的上端悬挂在天花板上,下端挂一灯泡,则()A.灯泡受的重力和灯泡对绳的拉力是一对平衡力B.灯泡受的重力和绳对灯泡的拉力是一对作用力和反作用力C.灯泡对绳的拉力和绳对灯泡的拉力是一对作用力和反作用力D.绳对天花板的拉力和天花板对绳的拉力是一对平衡力4.(4分)下列说法中正确的是()A.物体只有静止或匀速直线运动时才有惯性B.物体只有受外力作用时才有惯性C.物体的速度大时惯性大D.惯性是物体的固有属性,其大小仅与物体质量有关5.(4分)如图所示,壁虎在竖直玻璃面上斜向上匀速爬行,关于它在此平面内的受力分析,下列图示中正确的是()A.B. C.D.6.(4分)蹦级是一种极限体育项目,可以锻炼人的胆量和意志.运动员从高处跳下,弹性绳被拉展前做自由落体运动,弹性绳被拉展后在弹性绳的缓冲作用下,运动员下落一定高度后速度减为零.在这下降的全过程中,下列说法中正确的是()A.弹性绳拉展前运动员处于失重状态,弹性绳拉展后运动员处于超重状态B.弹性绳拉展后运动员先处于失重状态,后处于超重状态C.弹性绳拉展后运动员先处于超重状态,后处于失重状态D.运动员一直处于失重状态7.(4分)如图所示,在倾角为α的斜面上,放一质量为m的光滑小球,小球被竖直的木板挡住,则球对斜面的压力为()A.mgcosαB.mgtanαC.D.mg8.(4分)下列物理量中属于力学基本量的是()A.质量B.长度C.加速度D.时间9.(4分)关于两物体间摩擦力与弹力的说法中正确的()A.摩擦力的方向总是与弹力的方向垂直B.滑动摩擦力总是阻碍物体的相对运动C.两物体间有弹力则一定有摩擦力D.两物体间有摩擦力则一定有弹力10.(4分)如图(a),一物块在t=0时刻滑上一固定斜面,其运动的v﹣t图线如图(b)所示,若重力加速度及图中的v 0,v1,t1均为已知量,则可求出()A.斜面的倾角B.物块的质量C.物块与斜面间的动摩擦因数D.物块沿斜面向上滑行的最大高度二.填空题(每空2分,共14分)11.(2分)做匀加速直线运动的物体,速度以v增加到2v时经过的位移是x,则它的速度从2v增加到4v时所发生的位移是.12.(4分)在同一平面上的三个共点力F1、F2、F3的大小分别为3N、6N和8N,这三个力的合力的最大值是,最小值是.13.(2分)一质量为m=2kg的物体,受到的合力为F=10N,则其加速度大小为.14.(6分)在“探究弹力和弹簧伸长的关系”时,某同学把两根弹簧如图1连接起来进行探究。

甘肃省嘉峪关市一中2017-2018学年高一上学期期中考试数学试题 Word版含答案

甘肃省嘉峪关市一中2017-2018学年高一上学期期中考试数学试题 Word版含答案

嘉峪关市一中2017-2018学年第一学期期中考试高一数学试卷满分:150分时间:120分钟第I卷(选择题,共60分)一、选择题(本大题共12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,集合,则()A.B.C.D.2.函数的定义域是()A.B.C.D.3.下列四个图形中,不是以x为自变量的函数的图象是()4.已知函数,则等于()A.B.C.D.5. 下列函数中,与函数是相等函数的是()A.B.C. D.6. 下列函数中,是偶函数,且在区间上为增函数的是()A.B.C.D.7. 当时,在同一坐标系中,函数与的图象是()8.已知函数的值域为()A.B.C.D.9.已知是偶函数,当时,,则当时,()A.B.C.D.不能确定10. 函数的零点所在的区间是()A.B.C.D.11. 已知, 则它们之间的大小关系是()A.b<a<c B.a<c<b C.a<b<c D.b<c<a12.如果函数在区间上是递增的,那么实数a 的取值范围是()A.B.C.D.第II卷(非选择题,共90分)二、填空题(本大题共4小题,每小题5分,共20分.)13. 若函数,则__________;14. 幂函数的图象经过点,则的解析式是____________;15. 若函数y=3+a x-1(a>0且a≠1 的图象必过定点P,则P点的坐标为________;16. 已知函数是上的增函数,则实数的范围是________.三、解答题(本大题共6小题,共70分,解答应写出必要的文字说明,证明过程或演算步骤.)17.(本小题满分10分)已知全集U=R,A={x|﹣2<x<2},B={x|x<﹣1或x>4}.(1)求;(2).18.(本小题满分12分)求下列各式的值:(1);19. (本小题满分12分)设函数(1)在给出直角坐标系中画出的图象;(2)若,求的值.20.(本小题满分12分)某公司在甲乙两地同时销售一种品牌车,利润(单位:万元)分别为和,其中为销售量(单位:辆).若该公司在两地共销售15辆车,则能获得的最大利润为多少?21.(本小题满分12分)已知函数 f (x )=log 2(1+x )﹣log 2(1﹣x ). (1)求 f (x )的定义域;(2)判断 f (x )的奇偶性,并说明理由.22.(本小题满分12分)已知指数函数的图像过点,定义域为,是奇函数.(1)试确定函数 的解析式;(2)求实数 的值;(3)判断函数 在上的单调性,并用定义证明你的结论.二、填空题13.2-; 14. 3)(x x f =;15. )4,1(;16. ⎪⎭⎫⎢⎣⎡6,56.三、解答题17.解:全集U=R ,A={x |﹣2<x <2},B={x |x <﹣1或x >4}, (1)A ∩B={x |﹣2<x <﹣1};.........................5分 (2)∁U B={x |﹣1≤x ≤4}..........................10分18.解:(1)181; ........................6分(2)34........................12分 19解:(1)作图略;........................6分(2) 由(1)图可知,2≥t ,所以 由 32)(==t t f 得,23=t . ........................12分20.解:设甲地销售量为x 辆,则乙地销售量为x -15 辆,获得的利润为)(x L 万元,则)15(221)(2x x x x L -++-=),150(+∈≤≤N x x ........................6分30192++-=x x 所以,当 9=x 或10=x 时,利润最大,最大利润为120万元. .................12分 21.解:(1).1,1)()(,110101)的定义域为(函数得由-+∴<<-⎩⎨⎧>+>-x g x f x x x ……5分(2)函数f(x)+g(x)是偶函数,证明如下: )()()1(log )1(log )()(x g x f x x x g x f a a +=+-++=-+-Q所以,)()(x g x f + 是偶函数. ..............................................12分 22.解:(1)有已知()(01)x g x a a a =>≠且,因为指数函数()y g x =图像过点(2,4),所以24a =012a a a >≠∴=且即()2x g x =(2)由(1)可知12()2x x mf x m +-+=+()0f x =即1014nn m-+=∴=+ 又由(1)(1)f f =--可知11212241m m m-+-+=-∴=++2,1m n ∴==(3)由(2)可知11211()22221x x x f x +-==-+++.详细证明略.。

2017-2018学年甘肃省嘉峪关市一中高一上学期期中考试化学试题

2017-2018学年甘肃省嘉峪关市一中高一上学期期中考试化学试题

甘肃省嘉峪关市一中2017-2018学年高一上学期期中考试化学试题常用相对原子质量:S-32 O-16 H-1 C-12 N-14 Na-23 Cl-35.5 Al-27 Ca-40 K-39Ⅰ卷一、选择题(本题共30个小题,1-10每小题1分,11-30每小题2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. 以下是一些常用的危险化学品标志,装运乙醇的箱子上应贴的是( )A. AB. BC. CD. D【答案】A【解析】试题分析:乙醇是易燃液体,应点贴标签是A,故答案为A。

考点:考查乙醇的性质及危险品标签的使用。

2. 下列实验仪器不宜直接用来加热的是( )A. 量筒B. 坩埚C. 容量瓶D. 烧杯【答案】D【解析】A、量筒是量取仪器,不能用于加热,故A错误;B、坩埚可以直接加热,故B错误;C、容量瓶是配制溶液的仪器,不能用于加热,故C错误;D、烧杯需要垫石棉网加热,故D正确;故选D。

点睛:熟练记忆哪些仪器用于直接加热是解决本题的关键。

能直接加热的仪器有:试管、燃烧匙、坩埚、蒸发皿;必须垫石棉网才能加热的仪器有:烧杯、烧瓶、锥形瓶;不能加热的仪器有:集气瓶、量筒、胶头滴管、药匙等。

3. 胶体区别于其他分散系的本质特征是( )A. 胶体粒子不能透过半透膜B. 胶体粒子大小在1nm - 100nm之间C. 胶体粒子可以透过滤纸D. 光束穿过胶体时形成一条光亮的“通路”【答案】B【解析】胶体区别于其它分散系的本质特征是胶体粒子直径在1-100nm之间,溶液的粒子直径小于1nm,浊液的粒子直径大于100nm,故选B。

点晴:需要注意的是溶液、胶体和浊液的本质区别是分散质粒子直径的大小,不要认为丁达尔效应是溶液、胶体和浊液的本质区别,丁达尔效应可以区分溶液和胶体,这是容易混淆的。

4. 下列各物质的分类、名称(或俗名)、化学式都正确的是( )A. 氧化物氧化铁FeOB. 盐胆矾CuSO4•5H2OC. 酸硫酸H2SD. 碱纯碱Na2CO3【答案】B【解析】A.FeO是氧化亚铁,属于碱性氧化物,故A错误;B.胆矾是五水合硫酸铜,化学式为CuSO4•5H2O,属于盐,故B正确;C.H2S名称为硫化氢,水溶液称为氢硫酸,故C 错误;D.Na2CO3名称为碳酸钠,俗名为纯碱,属于盐,故D错误;故选B。

甘肃省嘉峪关市第一中学2017-2018学年高一上学期期末考试数学试题(精编含解析)

甘肃省嘉峪关市第一中学2017-2018学年高一上学期期末考试数学试题(精编含解析)

2017-2018学年甘肃省嘉峪关一中高一(上)期末数学试卷一、选择题(本大题共12小题,共60.0分)1.空间中,垂直于同一条直线的两条直线( )A. 平行B. 相交C. 异面D. 以上均有可能2.如果直线ax +2y +2=0与直线3x -y -2=0平行,则a =( )A. B. C. D. ‒3‒32‒6323.如图,△O ′A ′B ′是水平放置的△OAB 的直观图,则△OAB 的面积是( )A. 6B. C. 12 D. 32624.如图,方程y =ax +表示的直线可能是( )1aA. B. C. D. 5.设l 是直线,α,β是两个不同的平面( )A. 若,,则B. 若,,则l//αl//βα//βα⊥βl ⊥αl ⊥βC. 若,,则D. 若,,则l//αl ⊥βα⊥βα⊥βl ⊥βl//α6.若某几何体的三视图 (单位:cm ) 如图所示,则此几何体的体积是( )A. 36B. 48C. 60D. 72 cm3cm 3cm 3cm 37.已知点A (x ,5)关于点(1,y )的对称点(-2,-3),则点P (x ,y )到原点的距离是( )A. 4 B. C. D. 1315178.一个直角梯形的两底长分别为2和5,高为4,绕其较长的底旋转一周,所得的几何体的表面积为( )A. B. C. D. 52π34π45π37π9.如图,A -BCDE 是一个四棱锥,AB ⊥平面BCDE ,且四边形BCDE 为矩形,则图中互相垂直的平面共有( )A. 4组B. 5组C. 6组D. 7组10.如图,以等腰直角三角形ABC 的斜边BC 上的高AD 为折痕,把△ABD 和△ACD 折成互相垂直的两个平面后,某学生得出下列四个结论:①BD ⊥AC ;②△BAC 是等边三角形;③三棱锥D -ABC 是正三棱锥;④平面ADC ⊥平面ABC 。

其中正确的是( )A. B. C. D. ①②④①②③②③④①③④11.已知三点A (1,0),B (0,),C (2,)则△ABC 外接圆的圆心到原点的距离为( )33A. B. C. D. 532132534312.如图,正方体AC 1的棱长为1,过点A 作平面A 1BD 的垂线,垂足为点H ,则以下命题中,错误的命题是( )A. 点H 是的垂心△A 1BD B. AH 垂直平面CB 1D 1C. AH 的延长线经过点C 1D. 直线AH 和所成角为BB 145∘二、填空题(本大题共4小题,共20.0分)13.若圆C 的方程是x 2+y 2-4x -4y +4=0,则圆C 的半径为______.14.若一个正方体的顶点都在同一球面上,则球与该正方体的体积之比为______.15.已知点A (-2,0),B (0,2),若点C 是圆x 2-2x +y 2=0上的动点,则点C 到直线AB 距离的最小值是______.16.如图,正三棱柱(底面为正三角形的直棱柱)ABC -A 1B 1C 1的各棱长都等于2,D 在AC 1上,F 为BB 1的中点,且FD ⊥AC 1,有下述结论:(1)AC 1⊥BC ;(2)=1;ADDC1(3)平面FAC 1⊥平面ACC 1A 1;(4)三棱锥D -ACF 的体积为.33其中正确结论的序号为______.三、解答题(本大题共6小题,共70.0分)17.在△ABC 中,已知点A (2,2),B (0,-2),C (4,2),点D 为AB 的中点,(1)求中线DC 所在直线的方程(2)求BC边上的高所在直线的方程.18.已知直线l:kx-y+1+2k=0(k∈R),l1:2x+3y+8=0,l2:x-y-1=0.(1)若直线l,l1,l2相交于一点,求k的值;(2)若直线l与圆O:x2+y2=1相切,求k的值.19.如图,在直三棱柱ABC-A1B1C1中,AC=3,BC=4,AB=5,AA1=4,点D是AB的中点,(1)求证:AC⊥BC1;(2)求证:AC1∥平面CDB1;(3)求三棱锥C1-CDB1的体积.20.如下图所示是一个几何体的直观图、正视图、俯视图和侧视图(尺寸如图所示).(1)求四棱锥P-ABCD的体积;(2)若G为BC上的动点,求证:AE⊥PG.21.已知圆C的圆心C在第一象限,且在直线3x-y=0上,该圆与x轴相切,且被直线x-y=0截得的弦长为27,直线l:kx-y-2k+5=0与圆C相交.(Ⅰ)求圆C的标准方程;(Ⅱ)求出直线l所过的定点;当直线l被圆所截得的弦长最短时,求直线l的方程及最短的弦长.22.如图,在四棱锥P-ABCD中,底面ABCD是正方形,已知2AB=2,PA=2,PD=2,∠PAB=60°.(1)求证:AD⊥平面PAB;(2)求异面直线PC与AD所成角;(3)求点B到平面PAD的距离.答案和解析1.【答案】D【解析】解:在空间,垂直于同一条直线的两条直线,有可能平行,相交或者异面;如图长方体中直线a,b都与c垂直,a,b相交;直线a,d都与c垂直,a,d异面;直线d,b都与c垂直,b,d平行.故选D.画出长方体,利用长方体中的各棱的位置关系进行判断.本题考查了空间在直线的位置关系;本题借助于长方体中棱的关系理解.2.【答案】C【解析】解:由于直线ax+2y+2=0与直线3x-y-2=0平行,故它们的斜率相等,故有-=3,解得 a=-6,故选:C.由于直线ax+2y+2=0与直线3x-y-2=0平行,故它们的斜率相等,故有-=3,由此解得a的值.本题主要考查两直线平行的性质,两直线平行,斜率相等,属于基础题.3.【答案】C【解析】解:△O′A′B′是水平放置的△OAB的直观图,所以:S△OAB==12故选:C.画出△OAB的直观图,根据数据求出直观图的面积.本题考查斜二测法画直观图,求面积,考查计算能力,作图能力,是基础题.4.【答案】B【解析】解:方程y=ax+可以看作一次函数,其斜率a和截距同号,只有B符合,其斜率和截距都为负.故选:B.利用一次函数的斜率和截距同号及其意义即可得出.本题考查了一次函数的斜率和截距的意义,属于基础题.5.【答案】C【解析】解:由l是直线,α,β是两个不同的平面,知:在A中:若l∥α,l∥β,则α与β相交或平行,故A错误;在B中:若α⊥β,l⊥α,则l与β相交、平行或l⊂β,故B错误;在C中:若l∥α,l⊥β,则由面面垂直的判定定理得α⊥β,故C正确;在D中:若α⊥β,l⊥β,则l∥α或l⊂α,故D错误.故选:C.在A中,α与β相交或平行;在B中,l与β相交、平行或l⊂β;在C中,由面面垂直的判定定理得α⊥β;根据空间平面与平面位置关系的定义及几何特征,我们可以判断D的真假.进而得到答案本题考查了线面、面面平行,线面、面面垂直等简单的立体几何知识,考查学生对书本知识的掌握情况以及空间想象、推理能力,是中档题.6.【答案】B【解析】解:三视图复原的几何体是上部为长方体三度为:4,2,2;下部为放倒的四棱柱,底面是等腰梯形其下底为6,上底为2,高为2,棱柱的高为4,几何体的体积为两部分的体积和,即:4×2×2+=48(cm3).故选:B.利用三视图判断几何体的形状,通过三视图的数据求出几何体的体积即可.本题考查简单几何体的三视图,三视图与几何体的对应关系,正确判断几何体的形状是解题的关键.7.【答案】D【解析】解:根据中点坐标公式得到,解得,所以P的坐标为(4,1)则点P(x,y)到原点的距离d==故选:D.由A(x,5)关于点(1,y)的对称点(-2,-3),根据中点坐标公式列出方程即可求出x与y的值,得到点P的坐标,然后利用两点间的距离公式求出P到原点的距离即可.本题考查学生灵活运用中点坐标公式及两点间的距离公式化简求值,是一道基础题.8.【答案】A【解析】解:直角梯形绕其较长的底旋转一周后,所得的几何体是半径为4、高为2的圆柱和半径为4、高为3的圆锥组成;所以,表面积=πR2+2πRH+πR=πx4x[4+2x2+]=52π,故选:A.确定几何体的形状,根据已知条件所给数据,求出组合体的表面积即可.本题考查旋转体的体积,考查空间想象能力,逻辑思维判断能力,计算能力,是基础题,注意表面积的求出.9.【答案】C【解析】解:因为AB⊥平面BCDE,所以平面ABC⊥平面BCDE,平面ABD⊥平面BCDE,平面ABE⊥平面BCDE,又因为四边形BCDE为矩形,所以BC⊥平面ABE⇒平面ABC⊥平面ABE,同理可得平面ACD⊥平面ABC.平面ADE⊥平面ABE故图中互相垂直的平面共有6组.故选:C.先有AB⊥平面BCDE得到3组互相垂直的平面.再利用四边形BCDE为矩形得到其他互相垂直的平面即可.本题考查面面垂直的判定.在证明面面垂直时,其常用方法是在其中一个平面内找两条相交直线和另一平面内的某一条直线垂直10.【答案】B【解析】解:解:设等腰直角三角形△ABC的腰为a,则斜边BC=a,①∵D为BC的中点,∴AD⊥BC,又平面ABD⊥平面ACD,平面ABD∩平面ACD=AD,BD⊥AD,BD⊂平面ABD,∴BD⊥平面ADC,又AC⊂平面ADC,∴BD⊥AC,故①正确;②由A知,BD⊥平面ADC,CD⊂平面ADC,∴BD⊥CD,又BD=CD=a,∴由勾股定理得:BC=•a=a,又AB=AC=a,∴△ABC是等边三角形,故②正确;③∵△ABC是等边三角形,DA=DB=DC,∴三棱锥D-ABC是正三棱锥,故③正确.④∵△ADC为等腰直角三角形,取斜边AC的中点F,则DF⊥AC,又△ABC为等边三角形,连接BF,则BF⊥AC,∴∠BFD为平面ADC与平面ABC的二面角的平面角,由BD⊥平面ADC可知,∠BDF为直角,∠BFD不是直角,故平面ADC与平面ABC不垂直,故④错误;综上所述,正确的结论是①②③.故选:B.设等腰直角三角形△ABC的腰为a,则斜边BC=a,①利用面面垂直的性质定理易证BD⊥平面ADC,又AC⊂平面ADC,从而可知BD⊥AC,可判断①;②依题意及设法可知,AB=AC=a,BD=CD=a,利用勾股定理可求得BC=•a=a,从而可判断②;③又因为DA=DB=DC,根据正三棱锥的定义判断;④作出平面ADC与平面ABC的二面角的平面角,利用BD⊥平面ADC可知,∠BDF为直角,∠BFD不是直角,从而可判断④.本题考查命题的真假判断与应用,着重考查线面垂直的判定与应用,考查二面角的作图与运算,属于中档题.11.【答案】B【解析】解:因为△ABC外接圆的圆心在直线BC垂直平分线上,即直线x=1上,可设圆心P(1,p),由PA=PB得|p|=,得p=圆心坐标为P(1,),所以圆心到原点的距离|OP|===,故选:B.利用外接圆的性质,求出圆心坐标,再根据圆心到原点的距离公式即可求出结论.本题主要考查圆性质及△ABC外接圆的性质,了解性质并灵运用是解决本题的关键.12.【答案】D【解析】解:因为三棱锥A-A1BD是正三棱锥,所以顶点A在底面的射影H是底面中心,所以选项A正确;易证面A1BD∥面CB1D1,而AH垂直平面A1BD,所以AH垂直平面CB1D1,所以选项B正确;连接正方体的体对角线AC1,则它在各面上的射影分别垂直于BD、A1B、A1D等,所以AC1⊥平面A1BD,则直线A1C与AH重合,所以选项C正确;故选D.如上图,正方体的体对角线AC1有以下性质:①AC1⊥平面A1BD,AC1⊥平面CB1D1;②AC1被平面A1BD与平面CB1D1三等分;③AC1=AB等.(注:对正方体要视为一种基本图形来看待.)本题主要考查正方体体对角线的性质.13.【答案】2【解析】解:圆C的方程是x2+y2-4x-4y+4=0,即圆C:(x-2)2+(y-2)2 4=4,故圆的半径为2,故答案为:2.把圆的一般方程化为标准方程,可得圆的半径.本题主要考查圆的一般方程和标准方程,属于基础题.14.【答案】3π2【解析】解:设正方体的棱长为:1,则正方体的体对角线的长为:,所以正方体的外接球的直径为:所以正方体的体积为:1;球的体积为:=球与该正方体的体积之比为:=故答案为:设出正方体的棱长,求出正方体的体对角线的长,就是球的直径,然后求出正方体的体积,球的体积,即可得到比值.本题考查球的体积,球的内接体知识,找出二者的关系,球的直径就是正方体的体对角线,是本题解题的关键,考查计算能力,是基础题.15.【答案】322‒1【解析】解:过点A,B的直线方程为,即x-y+2=0.化圆x2-2x+y2=0为(x-1)2+y2=1,则圆心坐标为M(1,0),半径为1.如图,圆心M(1,0)到直线x-y+2=0的距离d=.∴点C到直线AB距离的最小值是.故答案为:.写出直线AB的方程,由圆的方程求出圆心坐标与半径,画出图形,数形结合得答案.本题考查直线与圆位置关系的应用,考查数形结合的解题思想方法,是中档题.16.【答案】(2)(3)(4)【解析】解:(1)连接AB1,则∠B1C1A即为BC和AC1所成的角,在三角形AB1C1中,B1C1=2,AB1=2,AC1=2,cos∠B1C1A==≠0,故(1)错;(2)连接AF,C1F,则易得AF=FC1=,又FD⊥AC1,则AD=DC1,故(2)正确;(3)连接CD,则CD⊥AC1,且FD⊥AC1,则∠CDF为二面角F-AC1-C的平面角,CD=,CF=,DF=,即CD2+DF2=CF2,故二面角F-AC1-C的大小为90°,面FAC1⊥面ACC1A1,故(3)正确;(4)由于CD⊥AC1,且FD⊥AC1,则AD⊥平面CDF,则V D-ACF=V A-DCF=•AD•S△DCF=××××=.故(4)正确.故正确结论的序号为:(2)(3)(4),故答案为:(2)(3)(4).(1)连接AB1,则∠B1C1A即为BC和AC1所成的角,由余弦定理,即可判断;(2)连接AF,C1F,由正三棱柱的定义,即可判断;(3)连接CD,则CD⊥AC1,且FD⊥AC1,则∠CDF为二面角F-AC1-C的平面角,通过解三角形CDF,即可判断;(4)由于AD⊥平面CDF,通过V D-ACF=V A-DCF即可求出体积本题考查正三棱柱的定义和性质,考查线面垂直的判定和性质,空间的二面角,以及棱锥的体积,注意运用转换法,属于中档题17.【答案】解:(1)点A (2,2),B (0,-2),C (4,2),点D 为AB 的中点,∴D (1,0),∴直线DC 的方程为=,即2x -3y -2=0,y 2‒0x ‒14‒1(2)k BC ==1,2+24‒0∴BC 边上的高所在的直线的斜率为-1,∴BC 边上的高所在直线的方程为y -2=-(x -2),即x +y -4=0【解析】(1)由中点坐标公式可得D 的坐标,再利用两点式即可求出直线方程,化为一般式即可.(2)由点的坐标可得BC 的斜率,由垂直关系可得BC 边上的高所在直线斜率,可得点斜式方程,化为一般式即可.本题考查直线的一般式方程,涉及直线的平行于垂直关系,属基础题.18.【答案】解:(1)联立,解得,{2x +3y +8=0x ‒y ‒1=0{x =‒1y =‒2把点(-1,-2)代入l :kx -y +1+2k =0,得-k +2+1+2k =0,即k =-3;(2)直线l :kx -y +1+2k =0过定点(-2,1),圆O :x 2+y 2=1的圆心坐标为O (0,0),半径为1,由题意可知直线l 的斜率存在,又直线l 与圆O :x 2+y 2=1相切,可得,|1+2k|k 2+1=1解得:k =0或k =-.43【解析】(1)联立直线l 1,l 2,求出交点坐标,代入直线l 的方程即可求得k 值;(2)由圆心到直线的距离等于半径求得k 值.本题考查直线系方程的应用,考查直线和圆的位置关系的判断,根据直线和圆相切的等价条件是解决本题的关键,是基础题.19.【答案】解:(1)直三棱柱ABC -A 1B 1C 1,底面三边长AC =3,BC =4,AB =5,∴AB 2=AC 2+BC 2,∴AC ⊥BC .∵CC 1⊥平面ABC ,AC ⊂平面ABC ,∴AC ⊥CC 1,又BC ∩CC 1=C .∴AC ⊥平面BCC 1B 1,BC 1⊂平面B 1C 1CB ,∴AC ⊥BC 1…(5分)(2)设CB 1与C 1B 的交点为E ,连接DE ,因为;BC =AA 1=4,所以BCC 1B 1为正方形,故E 是C 1B 的中点,∵D 是AB 的中点,E 是C 1B 的中点,∴DE ∥AC 1,∵DE ⊂平面CDB 1,AC 1⊄平面CDB 1,∴AC 1∥平面CDB 1.. …(10分)(3)因为AC ⊥平面BCC 1B 1,D 为中点所以D 到平面BCC 1B 1的距离等于AC ,12∵V C 1‒CDB 1=V D ‒B 1C 1C =AC13S △B 1C 1C ⋅12=×(×4×4)××3131212=4.…(14分)【解析】(1)先根据AC=3,BC=4,AB=5得到AC ⊥BC ;再结合其为直棱柱得到AC ⊥CC 1,即可证明AC ⊥平面BCC 1B 1,进而得到AC ⊥BC 1;(2)先设CB 1与C 1B 的交点为E ,连接DE ;跟怒边长相等得到E 为正方形对角线的交点,E 为中点;再结合点D 是AB 的中点可得DE ∥AC 1,进而得到AC 1∥平面CDB 1;(3)直接根据等体积转化,把问题转化为求三棱锥D-C 1CB 1的体积再代入体积计算公式即可.本题是对立体几何知识的综合考查.一般在求三棱锥的体积直接不好找时,常用等体积转化求解.(转化为高好找的三棱锥)20.【答案】解:(1)由几何体的三视图可知,底面ABCD 是边长为4的正方形,PA ⊥平面ABCD ,且PA =4,AB =AD =CD =CB =4,2∴V P -ABCD =PA •S 四边形ABCD =×4×4×4=.131326423证明:(2)连接BP ,∵AB :EB =PA :BA =,∠EBA =∠BAP =90°,2∴△ABE ∽△PAB∴∠PBA =∠BEA .∴∠PBA +∠BAE =∠BEA +∠BAE =90°.∴PB ⊥AE .又BC ⊥平面APEB ,∴BC ⊥AE .∴AE ⊥平面PBG .∴AE ⊥PG .【解析】(1)由几何体的三视图可知,底面ABCD 是边长为4的正方形,PA ⊥平面ABCD ,代入棱锥体积公式,可得答案;(2)连接BP ,先证明AE ⊥平面PBG ,进而可证得AE ⊥PG .本题考查的知识点是空间线面关系的判断与证明,棱锥的体积,空间几何体的三视图,难度不大,属于基础题.21.【答案】解:(Ⅰ)设圆心为(a ,b ),(a >0,b >0),半径为r ,则b =3a ,则r =3a ,圆心到直线的距离d =,|a ‒3a|12+12=2a∵圆被直线x -y =0截得的弦长为,27∴,(2a )2+(7)2=(3a )2即a 2=1,解得a =1,则圆心为(1,3),半径为3,则圆C 的标准方程(x -1)2+(y -3)2=9;(Ⅱ)由kx -y -2k +5=0得y =k (x -2)+5,则直线过定点M (2,5).要使弦长最短,则满足CM ⊥l ,即k =,‒1k CM =‒12则直线方程为x +2y -12=0,|CM |=,5则最短的弦长为.29‒(5)2=24=4【解析】(Ⅰ)设圆心坐标,根据条件确定圆心和半径即可求圆C 的标准方程;(Ⅱ)根据直线和圆的位置关系,求出直线的斜率即可.本题主要考查圆的方程的求解以及直线过定点问题,根据直线和圆的位置关系结合点到直线的距离公式是解决本题的关键.22.【答案】(1)证明:在△PAD 中,∵PA =2,AD =2,PD =2,2∴PA 2+AD 2=PD 2,∴AD ⊥PA .在矩形ABCD 中,AD ⊥AB .∵PA ∩AB =A ,∴AD ⊥平面PAB .解:(2)由题设,BC ∥AD ,∴∠PCB (或其补角)是异面直线PC 与AD 所成的角.在△PAB 中,AB =2,PA =2,PD =2,∠PAB =60°,则PB =22由(1)知AD ⊥平面PAB ,PB ⊂平面PAB ,∴AD ⊥PB ,因而BC ⊥PB ,于是△PBC 是等腰直角三角形,∴异面直线PC 与AD 所成的角的大小为;π4解:(3)∵AB =2,PA =2,∠PAB =60°,∴S △APB =AB •PA •sin60°=,123∴V D -PAB =××2=,133233∵AD ⊥PA ,∴S △APD =AB •PA =2,12设点B 到平面PAD 的距离为h ,∴V B -PAD =×2h =V D -PAB =,13233∴h =.3即点B 到平面PAD 的距离.3【解析】(1)由题意在△PAD 中,利用所给的线段长度计算出AD ⊥PA ,再利用矩形ABCD 及线面垂直的判定定理即可证明线面垂直.(2)利用条件借助图形,利用异面直线所成角的定义找到共面的两条相交直线,然后结合三角形有关知识解出即可;(3)求出S△APB,S△APD,利用等体积法即可求出.本题考查平面与平面垂直的证明,考查异面直线所成角的大小的求法,考查四棱锥的体积的求法,解题时要注意空间思维能力的培养.。

甘肃省嘉峪关市一中2017-2018学年高一上学期期中考试

甘肃省嘉峪关市一中2017-2018学年高一上学期期中考试

嘉峪关市一中2017-2018学年高一第一学期期中考试物理试卷一、选择题(本题共12个小题,第1~8题为单选,第9~12题为多项选择题;每小题4分,共48分;错选、不选得0分,漏选得2分。

)1. 在研究物体运动时,下列物体中能当做质点处理的是A. 研究火车穿越一山洞所需时间时B. 研究“神舟八号”飞船对接时C. 研究乒乓球运动员张继科发出的乒乓球时D. 用GPS定位系统研究汽车位置时【答案】D【解析】A、研究火车穿越一山洞所需时间时,火车的长度相对于山洞的距离来说,火车的长度不可以忽略,不能看成质点,故A错误;B、研究“神舟八号”飞船对接时,飞船的大小和形状对所研究的问题影响不可忽略,不能看成质点,故B错误;C、研究乒乓球运动员张继科发出的乒乓球时,乒乓球大小和形状对所研究的问题影响不可忽略,不能看成质点,故C错误;D、用GPS定位系统研究汽车位置时,汽车大小和形状对所研究的问题影响可忽略不计,能看成质点,故D正确;故选D。

2. 伽利略在研究自由落体运动时,做了如下的实验:他让一个铜球从阻力很小(可忽略不计)的斜面上由静止开始滚下,并且做了上百次。

假设某次试验伽利略是这样做的:在斜面上任取三个位置A、B、C,让小球分别由A、B、C滚下,如图所示。

设A、B、C与斜面底端的距离分别为x1、x2、x3,小球由A、B、C运动到斜面底端的时间分别为t1、t2、t3,小球由A、B、C运动到斜面底端时的速度分别为v1、v2、v3,则下列关系式中正确,并且是伽利略用来证明小球沿光滑斜面向下的运动是匀变速直线运动的是A. B.C. D.【答案】D【解析】试题分析:小球在斜面上做匀变速直线运动,由运动学公式可判断各项是否正确;同时判断该结论是否由伽利略用来证明匀变速运动的结论.解:A、小球在斜面上三次运动的位移不同,末速度一定不同,故A错误;B、由v=at可得,a=,三次下落中的加速度相同,故公式正确,但是不是当是伽利略用来证用匀变速直线运动的结论;故B错误;C、由图可知及运动学规律可知,x1﹣x2>x2﹣x3,故C错误;D、由运动学公式可知,X=at2.故a=2,故三次下落中位移与时间平方向的比值一定为定值,伽利略正是用这一规律说明小球沿光滑斜面下滑为匀变速直线运动,故D正确;故选D.【点评】虽然当时伽利略是通过分析得出匀变速直线运动的,但我们今天可以借助匀变速直线运动的规律去理解伽利略的实验.3. 现有八个描述运动的物理量:①位移;②路程;③时间;④瞬时速度;⑤平均速度;⑥速率;⑦速度变化量;⑧加速度。

甘肃省嘉峪关市高一化学上学期期末考试试题

甘肃省嘉峪关市高一化学上学期期末考试试题

嘉峪关市2017-2018学年第一学期期末考试高一化学试卷(考试时间:90分钟,满分:100分)可能用到的相对原子质量:H-1 O-16 Na-23 Mg-24 Al-27 Fe-56 Zn-65 Ag-108第Ⅰ卷选择题(共50分)一、选择题(每小题2分,共50分)1.“世界地球日”即每年的4月22日,是一项世界性的环境保护活动。

下列行为中不利于环境保护的是()A.严格履行《京都议定书》,控制温室气体的排放B.大量开采煤、石油及天然气以满足工业发展的需要C.加强新能源研究,使用压缩天然气、氢气作汽车燃料D.研发可降解塑料或代用品,控制白色污染2.下列物质中,属于混合物的是A.水玻璃B.液氯C.小苏打D.明矾3.下列物质的变化,能通过一步化学反应完成的是()A.Al→Al(OH)3 B.N2→NO2C.SiO2→Na2SiO3D.SiO2→H2SiO34.材料与化学密切相关。

下列物质与材料对应关系不正确的是()A.晶体硅——光导纤维B.氧化铝——耐火材料C.铁碳合金——碳素钢D.硅酸盐——普通玻璃5.下列药品的保存方法中,不正确的是()A.钠和钾保存在煤油中B.盛放氢氧化钠溶液的瓶子不能用磨口玻璃塞C.氢氟酸要盛放在玻璃瓶中D.漂白粉保存在密闭容器中6.已知水和苯不互相溶,苯不与钠反应,在烧杯中加水和苯(密度:0.88 g/mL)各50 mL。

将一小粒金属钠(密度:0.97 g/mL)投入烧杯中,观察到的现象可能是A.钠在水层中反应并四处游动B.钠停留在苯层中不发生反应C.钠在苯的液面上反应并四处游动D.钠在苯与水的界面处反应,可能做上下跳动7.已知甲、乙、丙、X是4种中学化学中常见的物质,其转化关系符合下图。

则甲和X不可能是( )A.甲:C ,X :O 2B.甲:SO 2,X :NaOH 溶液C.甲:Fe ,X :Cl 2D.甲:AlCl 3溶液,X :NaOH 溶液8.在氯水中存在多种分子和离子,在不同的反应中表现各自的性质,下列实验现象和结论一致且正确的是( )A .加入有色布条,有色布条褪色,说明氯水中有Cl 2B .氯水呈黄绿色,且有刺激性气味,说明氯水中有Cl 2 存在C .先加入盐酸酸化,再加入AgNO 3,溶液产生白色沉淀,说明有Cl -存在 D .加入NaOH 溶液,氯水黄绿色消失,说明有HClO 分子 9.设N A 为阿伏加德罗常数的值,下列说法正确的是( ) A .在常温常压下,11.2L H 2含有的分子数为0.5N A B .Na 2O 2和Na 2O 中阳离子和阴离子个数比分别为1:1和2:1 C .在标准状况下,22.4L SO 3含有的原子数为4N AD .7.1g Cl 2与足量的氢氧化钠溶液反应转移电子数为0.1N A 10.25 ℃时,下列各组离子在指定溶液中一定能大量共存的是( )A .在强酸性溶液中:Na +、Cl -、K +、SiO 32-B. 与铝反应产生氢气的溶液中:HC O 3-、NH 4+、NO 3-、Ca 2+C .无色溶液中:Cu 2+、NO 3-、Cl -、H +D .在强碱性溶液中:Na +、K +、AlO 2-、Cl -11.下列离子方程式书写正确..的是( ) A .铝粉投入到NaOH 溶液中:2Al+2OH -═2AlO 2-+H 2↑ B .铁粉与氯化铁溶液反应:++=+232Fe FeFeC .氯气与水的反应:Cl 2+ H 2O ═ 2H ++ Cl -+ ClO -D .漂白粉溶液中通入过量的CO 2:ClO -+ CO 2 + H 2O ═ HClO + HCO 3-12.下列离子在溶液中因发生氧化还原反应而不能大量共存的是( ) A .HCO 3-、NH 4+、H +、Cl - B .Al 3+、OH -、Na +、Cl -C .Na +、 H +、Fe 2+、NO 3- D .Mg 2+、Fe 3+、NO 3-、SCN - 13.证明某溶液只含有Fe 2+而不含有Fe 3+的实验方法是( )A .先滴加氯水,再滴加KSCN 溶液后显红色B .先滴加KSCN 溶液,不显红色,再滴加氯水后显红色C .滴加NaOH 溶液,先产生白色沉淀,后变灰绿,最后呈红褐色D .只需滴加KSCN 溶液14.检验SO2气体中是否混有CO2气体,可采用的方法是()A.通过品红溶液B.通过澄清石灰水C.先通过NaOH溶液,再通过澄清石灰水D.先通过酸性高锰酸钾,再通过澄清石灰水15.下列有关焰色反应及其操作的说法正确的是A.焰色反应是化学变化B.Na与NaCl在灼烧时火焰颜色相同C.铂丝在做完氯化钠溶液的焰色反应后,用稀硫酸洗净,再蘸取少量的K2SO4溶液,重复以上实验D.用洁净的铂丝蘸取某溶液,放在火焰上灼烧,观察到黄色火焰,则证明该溶液中一定有Na+,没有K+16.下列物质中既能跟稀H2SO4反应,又能跟氢氧化钠溶液反应的两性物质是()① NaHCO3;② Al2O3;③ Al(OH)3;④ AlA.③④ B.②③ C.①③④ D.全部17.两种金属混合粉末15g,与足量的盐酸反应时生成11.2L H2(标况下),符合上述情况的金属混合物是()A.Mg、Fe B.Zn、Ag C.Fe、Zn D.Mg、Al18.下列四种有色溶液与SO2作用,均能褪色,其实质相同的是()①品红溶液②酸性KMnO4溶液③溴水④滴有酚酞的NaOH溶液A.①④ B.②③ C.②③④ D.①②③19.甲、乙、丙、丁分别是Al2(SO4)3、FeSO4、NaOH、BaCl2四种物质中的一种,若将丁溶液滴入乙溶液中,发现有白色沉淀生成,继续滴加则沉淀消失,丁溶液滴入甲溶液中,无明显现象发生,据此可推断丙物质是()A.Al2(SO4)3B.NaOH C.BaCl2D.FeSO420.向100mL12mol/L的浓盐酸中加入足量的二氧化锰并加热,被还原的盐酸的物质的量是()A.等于1.2mol B.大于0.6mol,小于1.2mol C.等于0.60mol D.小于0.60mol21.下列除杂试剂的选择或除杂操作不正确的是()选项括号内为杂质除杂试剂除杂操作A Fe(Al)固体NaOH 充分反应后过滤B Na2CO3(NaHCO3)溶液CO2通入过量的CO222.将某些化学知识用图像表示,可以收到直观、简明的效果。

《精编》甘肃省嘉峪关市高三数学上学期第一次考试试题 理 新人教A版.doc

《精编》甘肃省嘉峪关市高三数学上学期第一次考试试题 理 新人教A版.doc

市酒钢三中届高三数学第一次考试试卷 〔理科〕本试题总分值150分,考试时间120分钟一、选择题〔本大题共12小题,每题5分,共计60分. 在每题列出的四个选项只有一项为哪一项最符合题目要求的〕1. 集合{|lg 0}M x x =>,2{|4}N x x =≤,那么MN =〔 〕〔A 〕 (1,2) 〔B 〕 [1,2) 〔C 〕 (1,2] 〔D 〕 [1,2] 2.以下函数中,既是偶函数又在(0,)+∞单调递增的函数是( ) 〔A 〕3x y = (B) 1y x =+ 〔C 〕21y x =-+ (D) 2xy -=,R ∈ϕ那么“0=ϕ〞是“))(cos()(R x x x f ∈+=ϕ为偶函数〞的〔 〕〔A 〕充分而不必要条件 〔B 〕必要而不充分条件 〔C 〕充分必要条件 〔D 〕既不充分也不必要条件4.函数b x y +-=与x b y -=〔0>b 且0≠b 〕的图象可能是〔 〕〔A 〕 〔 B 〕 〔C 〕 (D) 5.01lg =-x x 有解的区间是〔 〕(A) (0,1]( B) (1,10] (C) (10,100] (D) (100,)+∞()f x =,那么()f x 的定义域为〔 〕(A) (,)1-02 (B) (,]1-02 ( C) (,)1-+∞2( D) (,)0+∞ 2211()21x x f x x x x ⎧-⎪=⎨+->⎪⎩,,,,≤那么1(2)f f ⎛⎫⎪⎝⎭的值为〔 〕 〔A 〕1516〔B 〕2716-〔C 〕89〔D 〕18f (x )为奇函数,且在〔−∞,0〕上递减,f(−2)=0,那么xf (x )<0的解集为〔 〕〔A 〕 (−∞,−2) 〔B 〕(2,+∞)〔C 〕 (−∞,−2) ∪ (2,+∞) 〔D 〕〔 −2,2〕9.定义在R 上的函数()f x 满足()()()2f x y f x f y xy +=++〔x y ∈R ,〕,(1)2f =,那么(3)f -等于〔 〕 〔A 〕 2〔B 〕 3〔C 〕 6〔D 〕 9a 和b ,定义运算“⊗〞:,1,, 1.a ab a b b a b -≤⎧⊗=⎨->⎩ 设函数()()22()2,.f x x x x x R =-⊗-∈假设函数()y f x c =-的图像与x 轴恰有两个公共点,那么实数c 的取值范围是〔 〕〔A 〕(]3,21,2⎛⎫-∞-⋃- ⎪⎝⎭ 〔B 〕(]3,21,4⎛⎫-∞-⋃--⎪⎝⎭〔C 〕111,,44⎛⎫⎛⎫-⋃+∞ ⎪ ⎪⎝⎭⎝⎭〔D 〕311,,44⎛⎫⎡⎫--⋃+∞ ⎪⎪⎢⎝⎭⎣⎭11.定义在R 上的函数()x f 是奇函数又是以2为周期的周期函数,那么()()()741f f f ++等于 〔 〕〔A 〕 -1 (B) 0 (C) 1 (D) 4 12.设函数)(x f 是奇函数,并且在R 上为增函数,假设0≤θ≤2π时,f 〔m sin θ〕+f 〔1—m 〕>0恒成立,那么实数m 的取值范围是( D )(A) 〔0,1〕 (B) 〔-∞,0〕 (C) )21,(-∞ (D) 〔-∞,1〕二、填空题〔本大题共4小题,每题5分,共计20分〕13.函数y=-x 2-4mx+1 在[2,+∞〕上是减函数,那么m 的取值范围是14. 函数)2(log 221x x y -=的单调递减区间是_________.15. 方程 96370x x-•-=的解是 .())1,0(13log ≠>-+=a a x y a 的图象恒过定点A,假设点A 在直线01=++ny mx 上,其中0>mn ,那么nm 21+的最小值为 .三、解答题〔本大题有8小题,共70分. 解容许写出文字说明,证明过程或演算步骤〕 请考生在第22、23、24题中任选一题作答,如果多做,那么按所做的第一题记分. 17. 〔本小题总分值12分〕计算:〔1〕12lg )2(lg 5lg 2lg )2(lg 222+-+⋅+ (2) 3643==y x,求xyyx 2+的值。

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嘉峪关市酒钢三中2017-2018学年第一学期第一次考试高一英语试卷命题人:院菊霞审题人:杨艳艳本试卷分第I卷(选择题)和第II卷(非选择题)两部分,满分150分,考试时间为120分钟。

第一部分:听力(共两节,满分30分)(略)第二部分阅读理解(共两节,满分30分)第一节(共10小题,每小题2分,满分20分)AFalls are common in young children and older people.Although most result in mild bumps and bruises,some falls can cause serious injuries that require immediate medical attention. What to do:Do not move the person and call for emergency help if the person:●may have seriously injured the head,neck,back,hipbones or thighs●is unconscious or was briefly unconscious●is having difficulty breathing●isn’t breathing (starts CPR)●has a seizure(癫痫突然发作)●has clear fluid or blood coming from the nose,ears or mouthCall for a doctor or seek medical attention if the person:●becomes very sleepy and is very difficult to wake up●brings up more than two or three times●complains of neck or back pains●complains of increasing pain anywhere on the body●isn’t walking normally●doesn’t seem to be focusing his or her eyes normally●has any behaviour or symptoms that worry youIf you think it’s safe to move the person:●place a cold compress (敷布) or ice pack on any bumps or bruises●give acetaminophen (解热镇痛药) for pain●let the person rest,as needed,for the next few hours●watch the person closely for the next 24 hours for any unusual symptoms or behaviourNever leave young children on any bed or other furniture unsupervised(未监督).Always strap(用带捆住) children into high chairs,changing tables,shopping carts,and strollers.Always buckle(扣住) kids into ageappropriate safety seats when riding in motor vehicles,and make sure they always wears helmets when biking or skating or when using skateboards or scooters(踏板车).21.What is the text mainly about?A.Falls can’t cause serious injuries.B.Ways to deal with falls.C.Ways to prevent falls.D.Falls happen to kids.22.You mustn’t move the person if he ________.A.isn’t walking normallyB.becomes very sleepyC.isn’t breathingD.brings up more than twice23.If a person bleeds from his mouth after the accident,what should you do?A.Shake him forth and back.B.Move him to another place.C.Give him some medicine to have.D.Let him stay where he is.24.Which of the following will be the best title for the last paragraph?A.Prevent Your Kids B.Place Furniture WellC.Wear Helmets D.Prevent FallB"Indeed," George Washington wrote in his diary in 1785, "some kind of fly, or bug, had begun to eat the leaves before I left home." But the father of America was not the father of bug.When Washington wrote that, Englishmen had been referring to insects as bugs for more than a century, and Americans had already created lightning-bug(萤火虫). But the English were soon to stop using the bugs in their language, leaving it to the Americans to call a bug a bug in the nineteenth and twentieth centuries.The American bug could also be a person, referring to someone who was crazy about a particular activity. Although fan became the usual term, sports fans used to be called racing bugs, baseball bugs, and the like.Or the bug could be a small machine or object, for example, a bug-shaped car. The bug could also be a burglar alarm, from which comes the expression to bug, that is, "to install (安装) an alarm". Now it means a small piece of equipment that people use for listening secretly to others' conversation. Since the 1840s, to bug has long meant "to cheat", and since the 1940s it has been annoying.We also know the bug as a flaw in a computer program or other design. That meaning dates back to the time of Thomas Edison. In 1878 he explained bugs as "little problems and difficulties" that required months of study and labor to overcome in developing a successful product. In 1889 it was recorded that Edison "had been up the two previous nights discovering 'a bug' in his invented record player."25.We learn from Paragraph 1 that __________________.A.Americans had difficulty in learning to use the word bugB.George Washington was the first person to call an insect a bugC.the word bug was still popularly used in English in the nineteenth centuryD.both Englishman and Americans used the word bug in the eighteenth century26.What does the word "flaw" in the last paragraph probably mean?A.Fault. B.Finding. C.Origin. D.Explanation.27.The passage is mainly concerned with__________________.A.the understanding of the word bugB.the development of the word bugC.the public views of the word bugD.the special characteristics of the word bugCLife can be so wonderful, full of adventure and joy. It can also be full of challenges, setbacks and heartbreaks. Whatever our circumstances, we generally still have dreams, hopes and desires—that little something more we want for ourselves and our loved ones. Yet knowing we can have more can also create a problem, because when we go to change the way we do things, up come the old patterns and pitfalls that stopped us from seeking what we wanted in the first place.This tension between what we feel we can have and "what were seemingly able to have is the niggling suffering, the anxiety we feel. This is where we usually think it's easier to just give up. But we're never meant to let go of the part of us that knows we can have more. The intelligence behind that knowing is us—the real us. It's the part that believes in life and its possibilities. If you drop that, you begin to feel a little "dead" inside because you're dropping "you".So, if we have this capability but somehow life seems to keep us stuck, how do we break these patterns?Decide on a new course and make one decision at a time. This is good advice for a new adventure or just getting through today's challenges.While, deep down, we know we can do it, our mind—or the minds of those close to us—usually says we can't.That isn't a reason to stop, it's just the mind, that little man or woman on your shoulder, trying to talk you out of something again. It has done it many times before. It's all about starting simple and doing it now.Decide and act before overthinking. When you do this you may feel a little, or large, release from the jail of your mind and you'll be on your way.28.It can be inferred from the first two paragraphs that we should .A.slow down and live a simple lifeB.be careful when we choose to changeC.stick to our dreams under any circumstancesD.be content with what we already have29.What is the key to breaking the old patterns?A. To focus on every detail.B. To decide and take immediate action.C. To listen to those close to us.D. To think twice before we act.30.What does the author intend to tell us?A.It's easier than we think to get what we want.B. It's important to learn to accept sufferings in life.C. It's impractical to change our way of thinking.D. It's harder than we expect to follow a new course.第二节(共5小题,每小题2分,满分10分)根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。

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