限时训练11

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2010届高三化学8+4限时训练11

2010届高三化学8+4限时训练11

2010届高三化学8+4限时训练116、下列叙述正确的是 ( ) ①在CaCl 2和NH 4Cl 中均既含有共价键又含有离子键;②用蒸馏水即可鉴别甲苯、乙醇和四氯化碳三种无色液体;③KAl(SO 4)2与Ba(OH)2溶液按照溶质的物质的量之比1:2混合,充分反应后,所得溶液呈中性;④除去混在SiO 2 中的少量CaCO 3可加足量盐酸并过滤。

A 、①③B 、 ②④C 、 ①②④D 、②③④7、以MnO 2为原料制得的MnCl 2溶液中常含有Cu 2+、Pb 2+、Cd 2+等金属离子,通过添加过量难溶电解质MnS ,可使这些金属离子形成硫化物沉淀,经过滤除去包括MnS 在内的沉淀,再经蒸发、结晶,可得纯净的MnCl 2 ,根据上述实验事实可推知MnS 具有的相关性质是 ( )A 、具有吸附性B 、溶解度与CuS 、PbS 、CdS 等相同C 、溶解度大于CuS 、PbS 、CdSD 、溶解度小于CuS 、PbS 、CdS8、已知:CO 2(g) + 3H 2(g) CH 3OH(g) + H 2O(g) ; ΔH =-49.0 kJ•mol -1。

一定条件下,向体积为1 L 的密闭容器中充入1 mol CO 2和3 mol H 2,测得CO 2和CH 3OH(g)的浓度随时间变化曲线如图所示。

下列叙述中,正确的是( )A 、升高温度能使n(CH 3OH)/n(CO 2) 增大B 、反应达到平衡状态时,CO 2的平衡转化率为75%C 、3 min 时,用CO 2的浓度表示的正反应速率等于用CH 3OH 的浓度表示的逆反应速率D 、从反应开始到平衡,H 2的平均反应速率V (H 2)=0.075mol/(L ·min)9、向MgCl 2和AlCl 3的混合溶液中加入氢氧化钠溶液,所得沉淀的物质的量(n )与加入氢氧化钠溶液的体积(V )关系如右图所示。

则下列说法正确的是( )A .a .c 两点沉淀物成份相同,d .e 两点沉淀物成份相同B .在反应过程中,各状态点溶液的pH 大小顺序是:e > d > c > a > bC .b —c 段与c —d 段溶液中阴离子的物质的量相等D .在d 点,向溶液中加入盐酸,沉淀量将减少10、硝酸钾在不同温度时的溶解度如下表:现有60℃时硝酸钾的饱和溶液105克,要得到39.2 克晶体,应将溶液冷却到多少度 ( )A 、10℃B 、20℃C 、30℃D 、40℃11、已知绿茶中含有EGCG ,该物质具有抗癌作用,EGCG 的结构简式如右图,下列说法错误的是( )A .1molEGCG 最多可与含10mol NaOH 的碱溶液反应B .1molEGCG 最多可与含6molBr 2的浓溴水反应C .EGCG 在空气中易被氧化D .1molEGCG 最多可与9mol H 2发生加成反应12、锌与100 mL 18.5 mol ·L -1的浓硫酸充分反应后,锌完全溶解,同时生成气体甲 33.6L (标准状况)。

2019-2020年中考英语考点限时训练:考点11

2019-2020年中考英语考点限时训练:考点11

一、单项选择。

1. I think if you communicate more __B__ your friend , everything will be better.A . for B. with C. on D. to2. —The speech is really bori ng!—I agree with you.It is a _ D__ of time to listen to it.A. resultB. stressC. messD. waste3. —Did you help your mom do some housework on Sun day?—No.I went to the English Center _ C__ .A . alsoB . stillC .in steadD . yet4 . Rick has learned a lot about Chinese culture _D__ he came to China.(2014,安徽)A . beforeB . whe nC . un tilD . since5. —Where are you going?—To the library.I've finished reading this book , so rm going to _ C__ it.(2014 ,台州)A . buyB . throwC . returnD . borrow6. —May I speak to ne , please? (2014,广安)—Sorry, she isn't in right now」'll tell you as soon as she _ B__ back tomorrow.A . comeB . comesC . will come7. — It is getting cold.Would you mind _ A__ the window?—Of course not.(2014 ,长沙)A . closi ngB . to closeC . closed& —Can I B your bike ? (2013,宁波)—With pleasure.But you must n't _______ it to others.A . lend; borrowB . borrow ; lendC . lend; lendD . borrow ; borrow9. —Kunming is really a comfortable city to live in.— A . The weather is pleasant.(2014,云南)A . So it isB . So is itC . So it doesD . So does it10 . —Could I use your dict ionary to look up some new words?—OK , C . (2014,益阳)A . it's a pleasureB . that's rightC . no problem11 . Ten minu tes __C__ eno ugh for you ______ there.A . was; walkingB . are; walkingC. is; to walk D . were; to walk12. The __A__ we do for other people , the ________ we will be.A. more; happierB. much; happierC. more; happyD. most; happiest二、词汇运用:根据句意及首字母或汉语提示完成单词。

限时训练(十一) 小说阅读

限时训练(十一) 小说阅读

三、留两个柿子看树 阅读答案 ①小时候,父亲在外地,母亲一人担 起了家中所有的农活,里 里外外忙个不停。在生活中母亲处处教导我们节俭,摘柿子的时 候不论大小都让我和弟弟摘下来。 ②挨着院墙有一排柿子树,黑黑的躯干,粗糙的树皮,一如历 尽岁月沧桑的长者,安详、淡定。霜浓秋重的时候,柿树上果实 累累,不甘寂寞的柿叶,被秋染红,随风而动,远远望去好像一 团火。那些饱满而丰润的柿子很快就褪去少女般的青涩,追寻着 岁月的脚步由金黄圆润转身披上红彤彤的嫁衣,坠在枝头闪动着 红色的亮光,特别诱人。
⑰有娘在身边的日子真好,洗衣机都成摆设了,娘还买了砂罐 给妻煨汤喝,喝得妻的嘴一天比一天叼。 ⑱日子有滋有味地过,转眼又是腊月三十了,依然下着雪,吃 了团年饭,我和妻躲在卧室里逗小家伙看电视,娘在客厅和厨房 穿梭着。 ⑲我喝多了黄酒,尿急,出来上卫生间,一看,娘没了,人呢, 我寻到阳台上,看见娘正弯腰在地上鼓捣着,阳台上不知什么时 候多了四个小花盆,娘正用铲刀翻土,往里面点种南瓜子。 ⑳风雪在没有封闭的阳台肆意飞舞着,娘没有发现我。我退了 回来,从口袋里摸出一包烟,走进娘的睡房,爹的遗像前,我用 打火机点燃三根烟,竖在桌子上。我知道这是迷信,但我想像爹 正有滋有味抽着它们,我甚至都听见了爹的咳嗽
11、结合前后文,在第⑨段划线处补写“我”当时的神态和语言 (8分) 我眉头一皱,苦笑了一下:“她啊,是城里人,怎么会相信这种 迷信的做法,你还是别白费这个心了。” 12、联系我们学过的《阿长与〈山海经〉》,说说你对文中父亲、 母亲迷信做法的看法。(8分) 文中的父母挖南瓜窝子保家人幸福这类的迷信做法,和阿长元旦 要“我”吃福橘、说吉利话,本质都是一样的,都体现了长辈对 晚辈由衷的关爱。我们要理解这种看似愚昧做法中深藏的良苦爱 心。
⑩“我信!”爹横了我一眼,腰一弯,咳嗽加剧了。 ⑪“我挖,我挖不行吗?”我嘟嘟哝哝甩开膀子干了起来。 ⑫没十分钟我就爹犹豫了一下,要不再加一个小的?小的? 我一怔,跟着明白了爹的意思,“您不怕别人笑啊,孙子还在肚 子里,没影的事呢!” ⑭年一晃就过去了,五月端午时,我的儿子出生了,八个月, 早产,乡下有说法,叫养七不养八,说是八个月的孩子不如七个 月的好养。爹娘眉头不展的,爹说,要死死我吧,冲一下孙子的 关煞。又是乡下的迷信说话,人要戴重孝才能免灾,孙子戴爷爷 的孝,当然是重孝了。 ⑮爹竟真的过世了,身体不好加上忧虑孙子,就像饱经风霜的 枯枝,加上雪雨一欺,“咔嚓”一声就折断了。 ⑯爹死前拉着娘的手,只说了一句,记得挖南瓜窝子呀!爹过 世不久,我把乡下房子变卖了,把娘接进了城,挖南瓜窝子,哪 儿挖去!

2024届高考化学一轮复习限时训练:《化学物质及其变化》专题11(学生版)

2024届高考化学一轮复习限时训练:《化学物质及其变化》专题11(学生版)

2024届高考化学一轮复习限时训练:《化学物质及其变化》专题111.能正确表示下列反应的离子方程式是A. 硫化亚铁和过量硝酸混合:FeS +2H +=Fe 2++H 2S ↑B. 向FeBr 2溶液中通入等物质的量的Cl 2:2Br -+Cl 2=Br 2+2Cl -C. NaHCO 3溶液中通入足量SO 2:CO 2-3+2SO 2+H 2O =2HSO -3+CO 2D. 等物质的量浓度的Ba(OH)2和NH 4HSO 4溶液以体积比1∶2混合:Ba 2++2OH -+2H ++SO 2-4=BaSO 4↓+2H 2O2.含共价键的强电解质的是A. MgCl 2B. NaHSO 4C. NH 3D. CH 3COOH3.关于反应:FeS 2+7Fe 2(SO 4)3+8H 2O =15FeSO 4+8H 2SO 4,下列说法不正确的是 A .Fe 2(SO 4)3中Fe 在反应中得到电子 B .H 2O 既不是氧化剂也不是还原剂 C .消耗0.2molFeS 2,转移2.8mol 电子 D .氧化产物和还原产物物质的量之比8∶154.下列反应的离子方程式书写正确的是A .Na 2S 2O 3溶液中滴加稀硝酸:S 2O 2-3+2H +=S ↓+SO 2↑+H 2OB .NaAlO 2溶液中加入足量Ca(HCO 3)2溶液:AlO -2+HCO -3+H 2O =Al(OH)3↓+CO 2-3C. 向溶液中通入少量CO 2:D. 向明矾溶液中滴加氢氧化钡至沉淀质量最大:Al 3++2SO 2-4+2Ba 2++4OH -=2BaSO 4↓+AlO -2+2H 2O5.一种陨磷钠镁钙石的化学式为Ca 9NaMg(PO 4)7。

下列说法正确的是A .Ca 9NaMg(PO 4)7属于混合物B .Ca 9NaMg(PO 4)7属于共价化合物C .CaO 2、MgO 均为碱性氧化物D .Ca 9NaMg(PO 4)7属于正盐6.关于反应2KMnO 4+2KF +10HF +3H 2O 2=2 K 2MnF 6+8H 2O +3O 2,下列说法正确的是 A. KF 和HF 均发生氧化反应B. H 2O 2是还原剂C. 转移3mol 电子,1mol KMnO 4被氧化D. K 2MnF 6既是氧化产物又是还原产物 7. 下列反应的离子方程式正确的是A. 铜与浓硫酸(98.3%)加热下反应:Cu +2H 2SO 4(浓)===△Cu 2++SO 2-4+SO 2↑+2H 2O B. 用惰性电极电解饱和ZnCl 2溶液:Zn 2++2Cl -+2H 2O=====通电Zn(OH)2↓+Cl 2↑+H 2↑C. 向含0.1mol[Co(NH 3)Cl]Cl 2的溶液中加入含0.3mol AgNO 3的溶液:[Co(NH 3)5Cl]2++2Cl -+3Ag +=[Co(NH 3)5Cl]3++3AgCl ↓D. 向酸性重铬酸钾溶液中加少量乙醇溶液:2Cr 2O 2-7+3C 2H 5OH +16H +=4Cr 3++3CH 3COOH +11H 2O8. 古文献《余冬录》中对胡粉[主要成分为2PbCO 3∙Pb(OH)2]制法的相关描述:“铅块悬酒缸内,封闭四十九日,开之则化为粉矣。

高二英语限时训练11,限时训练12

高二英语限时训练11,限时训练12

南乐职专高二英语限时训练11AMy life began similarly to most of the kids in my family. My mother did her best to take care of us, but left after my father drunk many times. So I grew up not knowing what a father was and no one was there to teach me.As a result, I developed the usual problems with alcohol and drugs and spent seven years as a street kid, landing in a rehab center (康复中心) when I was 20. Inside I met my adviser, Bill, and he taught me a lot of things. The main thing was the gift of giving.It was the night before an important event and I was very nervous. Bill saw this and suggested that we go for a walk. As we walked and talked, Bill suggested we go for a coffee. I told him I was broke, but when I got paid, I would pay him back. He stopped then and looked at me in a serious, but kindly way and said, “No, you won’t.”He added that I didn’t owe him anything and he was doing this because he could. He then told me something that I bear in mind till today, “One day you’ll be around someone and he’ll need a co ffee, and you’ll be able to buy it for him. That’s how you can pay me back.”I’m a youth worker now, far from the life I had ten years ago. My job is simple — I buy kids coffee. Bill taught me how to do that.21. From the first paragraph, we can know_______.A. when the author was born, his mother diedB. the author got little love of his parentsC. the author didn’t know who his father wasD. the author came from a wealthy family22. The underlined part “I was broke” (in Paragraph 3) means “______”.A. I was tiredB. I was hurtC. I was thirstyD. I had no money23. How did Bill ask the author to pay him pack?A. By working hard in a rehab center.B. By giving others help in future.C. By giving back the money of the coffee.D. By finding a job to support himself.BHanukkahHanukkah (光明节) is a Jewish festival. It is celebrated on the 25th day of the Jewish month of Kislev (犹太教历), which is usually sometime in December. It is often called the festival of lights. The festival celebrates the time, over 2,000 years ago, when the Jewish people fought against an emperor who would not let them follow their own traditions and religion. When the Jewish people won back their temple in Jerusalem, they found there was only enough holy oil to keep the sacred light burning for one day. However, to their surprise, this small amount of oil kept the light burning for eight days and nights, until the people had time to make more oil.At the center of the Hanukkah celebrations is a candlestick (called a Menorah) that holds nine candles. On the first night of Hanukkah the first candle is lit, and each day this candle is used to light another candle, until on the eighth day, the last day, all the candles are lit. During Hanukkah, people go to the synagogue (犹太教堂) to pray and to remember the miracle (奇迹) of the holy oil. Hanukkah is a time for family and friends to come together. People exchange gifts and greeting cards, and children go to parties. Parents often give their children money at Hanukkah. Potato cakes, called latkes, are a traditional Hanukkah food.24. For how many days does Hanukkah last?A. 9B. 10C. 8D. 725. According to the passage, what is necessary when celebrating Hanukkah nowadays?A. Candles.B.. Money.C.OilD. Cards.26. What does the Menorah remind Jewish people about?A. The miracle of the holy oil that happened 2,000 years ago.B. The war that they fought 2,000 years ago.C. The God that they honored best.D. The church they built 2,000 years ago.27.The passage mainly tells us about _____.A. why Jewish people protect their traditionsB. the history of Hanukkah and how it is celebratedC. why Jewish people celebrate HanukkahD. the miracle of the holy oil in the Jewish templeCIf you think American cooking means opening a package and throwing the contents into the microwave oven (微波炉), think again. On the one hand, it’s true that many Americans have cold cereal(谷类食品)for breakfast, sandwiches for lunch and instant (方便的) dinners. From busy homemakers to working people, many Americans enjoy the convenience (方便) of fast food that can be ready to serve in 10 minutes or less. On the other hand, many Americans realize the importance of cooking skills. Parents — especially mothers — see the importance of training their children —especially daughters. Most Americans think that there’s noth ing better than a good home-cooked meal. But with cooking, as with any other skill, good results don’t happen by accident.Probably every cook has his or her own way of cooking. But there are some basic skills that most people follow. For example, baking is a main method (方法) of preparing food in America. For that reason, Americans would find it next to impossible to live without an oven. American cooks pay special attention to the balance of foods, too. In planning a big meal they try to include meat, a few vegetables, some bread and often a dessert. They also like to make sure the meal is colorful. Having several different colors of food on the plate usually makes for a healthy meal.For those who need guidance in their cooking, or for those who have just run out of ideas, recipes are a great help. Recipes list all the ingredients for a dish (generally in the order used), the amount of each to use, and a description of how to put them together.28.This passage mainly tells us that ______.A.without an oven, Americans find it impossible to live convenientlyB.Americans like to have several different colors of food on the plateC. Americans usually have fast food, but they pay special attention to cooking as wellD. Americans pay special attention to recipes and nutritious meals29. Many Americans have cold cereal for breakfast, sandwiches for lunch and instantdinner because ______.A. they like instant food very muchB. they don’t like cooking at allC. most American working people are busy and don’t have time to cookD. fast food is delicious and it usually contains a lot of vitamins30.By saying “But with cooking, as with any other skill, good results don’t happen by accident”, the author means ______.A. just like any other skill, cooking may bring good resultsB. cooking comes from one’s gift, not through practiceC. cooking can lead to accidentsD. Good cooking doesn’t come easily; it needs a lot of practice31. From the passage, we know that ______.A. Americans don’t care about foodB. Americans are not good at cooking because they like to use recipesC. an oven plays an important role in cooking for AmericansD. while cooking, Americans usually run out of ideas第一节:短文改错(共10小题;每小题1分,满分10分)假定英语课上老师要求同桌中间交换修改作文,请你修改你同桌写的以下作文。

11-限时规范训练

11-限时规范训练

11.古代诗歌鉴赏(二)1.阅读下面这首词,然后回答问题。

(9分)鹧鸪天[金]元好问①百啭娇莺出画笼,一双蝴蝶殢②芳丛。

葱茏花透纤纤月,暗澹③香摇细细风。

情不尽、梦还空,欢缘心事泪痕中。

长安西望肠堪断,雾阁云窗又几重。

【注】①元好问:1190~1257,太原秀容(今山西)人,金亡不仕元。

1233年,蒙古军攻陷金都汴京(今河南开封)后,元好问与一些官民被羁管在聊城(在山东),过半是囚徒半是苦工的俘虏生活。

这首词即写在其作为阶下囚期间。

②殢:停留。

③暗澹:这里指香气清淡。

(1)请写出上阕中能反衬作者当时被羁管生活的语句。

(3分)答:________________________________________________________________________________________________________________________________________________(2)下阕“欢缘心事”中的“心事”主要有哪些?(3分)答:________________________________________________________________________ ________________________________________________________________________(3)这首词的上下阕抒情方式有什么不同?请作简要分析。

(3分)答:________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ 答案(1)百啭娇莺出画笼一双蝴蝶殢芳丛。

第11讲力学实验(限时训练)

第11讲力学实验(限时训练)

高三物理限时规范训练(十一)力学实验(时间:60分钟满分:100分)姓名成绩1.(8分)如图甲、乙所示,游标卡尺的示数为________cm;螺旋测微器的示数为________mm.2.(10分)如图所示,在“力的平行四边形定则”的实验探究中,某同学进行实验的主要步骤是:将橡皮条的一端固定在木板上的A点,另一端拴上两根带有绳套的细绳,每根绳套分别连着一个弹簧测力计.沿着两个方向拉弹簧测力计,将橡皮条的活动端拉到某一位置,将此位置标记为O点,读取此时弹簧测力计的示数,分别记录两个拉力F1、F2的大小并标出方向;再用一个弹簧测力计将橡皮条的活动端仍拉至O点,记录其拉力F的大小和方向.(1)用一个弹簧测力计将橡皮条的活动端仍拉到O点,这样做的目的是__________.(2)为尽可能减小实验误差,下列操作中正确的是________.A.弹簧秤、细绳、橡皮条都应与木板平行B.两细绳必须等长C.标记同一细绳方向的两点要远些D.用两弹簧秤同时拉细绳时夹角应尽可能大3.(12分)为了“探究加速度与力、质量的关系”,现提供如图甲所示的实验装置.请思考探究思路并回答下列问题:(1)为了消除小车与水平木板之间摩擦力的影响应采取的做法是________.A.将木板不带滑轮的一端适当垫高,使小车在钩码拉动下恰好做匀速运动B.将木板带滑轮的一端适当垫高,使小车在钩码拉动下恰好做匀速运动C.将木板不带滑轮的一端适当垫高,在不挂钩码的情况下使小车恰好做匀速运动D.将木板不带滑轮的一端适当垫高,在不挂钩码的情况下使小车能够静止在木板上(2)在实验中,得到一条打点的纸带,如图乙所示,已知相邻计数点间的时间间隔为T,且间距s1、s2、s3、s4、s5、s6已量出,则小车加速度的表示式为a=________;(3)有一组同学保持小车及车中的砝码质量一定,探究加速度a与所受外力F的关系,他们在轨道水平和倾斜两种情况下分别做了实验,得到了两条a-F图线,如图丙所示.图线________是在轨道倾斜情况下得到的(选填“①”或“②”);小车及车中的砝码总质量m=________kg.4.(12分)如图甲是“研究匀变速直线运动”实验中获得的一条纸带,O、A、B、C、D和E为纸带上六个计数点,加速度大小用a表示.(1)OD间的距离为________cm.(2)如图乙是根据实验数据绘出的s-t2图线(s为各计数点至同一起点的距离),斜率表示__________,其大小为______m/s2(保留三位有效数字).5.(12分)在探究“恒力做功和物体动能变化之间的关系”的实验中,某同学的实验设计方案如图所示.则:(1)该实验用钩码的重力表示小车受到的合外力,在安装时首先要____________,其次钩码和小车还需要满足的条件是____________________________________.(2)实验中,除位移、速度外,还需要测出的物理量有__________________________.(3)在上述实验中,打点计时器使用的交流电频率为50 Hz.某同学打出的一段纸带如图所示,则小车匀速运动时的速度大小为________m/s.(计算结果保留三位有效数字)6.(14分)(2013·高考新课标全国Ⅰ卷)图(a)为测量物块与水平桌面之间动摩擦因数的实验装置示意图.实验步骤如下:①用天平测量物块和遮光片的总质量M 、重物的质量m ;用游标卡尺测量遮光片的宽度d ;用米尺测量两光电门之间的距离s ; ②调整轻滑轮,使细线水平;③让物块从光电门A 的左侧由静止释放,用数字毫秒计分别测出遮光片经过光电门A 和光电门B 所用的时间Δt A 和Δt B ,求出加速度a ; ④多次重复步骤③,求a 的平均值 a ; ⑤根据上述实验数据求出动摩擦因数μ. 回答下列问题:(1)测量d 时,某次游标卡尺(主尺的最小分度为 1 mm)的示数如图(b)所示,其读数为______cm.(2)物块的加速度a 可用d 、s 、Δt A 和Δt B 表示为a =_______. (3)动摩擦因数μ可用M 、m 、a 和重力加速度g 表示为μ=_______.(4)如果细线没有调整到水平,由此引起的误差属于________(选填“偶然误差”或“系统误差”).7.(16分)(2013·高考新课标全国Ⅱ卷)某同学利用下述装置对轻质弹簧的弹性势能进行探究:一轻质弹簧放置在光滑水平桌面上,弹簧左端固定,右端与一小球接触而不固连;弹簧处于原长时,小球恰好在桌面边缘,如图(a)所示.向左推小球,使弹簧压缩一段距离后由静止释放;小球离开桌面后落到水平地面.通过测量和计算,可求得弹簧被压缩后的弹性势能. 回答下列问题:(1)本实验中可认为,弹簧被压缩后的弹性势能E p 与小球抛出时的动能E k 相等.已知重力加速度大小为g .为求得E k ,至少需要测量下列物理量中的________(填正确答案标号). A .小球的质量m B .小球抛出点到落地点的水平距离s C .桌面到地面的高度h D .弹簧的压缩量Δx E .弹簧原长l 0 (2)用所选取的测量量和已知量表示E k ,得E k =________.(3)图(b)中的直线是实验测量得到的s -Δx 图线.从理论上可推出,如果h 不变,m 增加,s -Δx 图线的斜率会________(填“增大”、“减小”或“不变”);如果m 不变,h 增加,s -Δx 图线的斜率会________(填“增大”、“减小”或“不变”).由图(b)中给出的直线关系和E k 的表达式可知,E p 与Δx 的________次方成正比.8.(16分)某同学用如图所示的实验装置探究小车动能变化与合外力对它所做功的关系.图中A 为小车,连接在小车后面的纸带穿过打点计时器B 的限位孔,它们均置于水平的一端带有定滑轮的足够长的木板上,C 为弹簧测力计,不计绳与滑轮的摩擦.实验时,先接通电源再松开小车,打点计时器在纸带上打下一系列点.(1)该同学在一条比较理想的纸带上,从点迹清楚的某点开始记为0点,顺次选取5个点,分别测量这5个点到0点之间的距离,并计算出它们与0点之间的速度平方差,Δv 2=v 2-v 20,填入表中:请以Δv 2为纵坐标,以x 为横坐标,在如图所示的方格纸中作出Δv 2-x 图象.若测出小车质量为0.2 kg ,结合图象可求得小车所受合外力的大小为________N.(2)若该同学通过计算发现小车所受合外力小于弹簧测力计读数,明显超出实验误差的正常范围,你认为主要原因是____________________________,实验操作中改进的措施是________________________________________________________________________ ________________________________________________________________________.。

2021年高二下学期限时训练11 Word版含答案

2021年高二下学期限时训练11 Word版含答案

2021年高二下学期限时训练11 Word版含答案班级姓名学号成绩1.设集合,则= .2.命题“”的否定是.3.已知复数(为虚数单位),则复数的模= .4.函数的定义域是.5.“”是“”的条件. (请在“充要”、“充分不必要”、“必要不充分”、6.若复数满足 (为虚数单位),则为.7.已知,若p是q的充分不必要条件,则实数的取值范围为.8.已知,函数,若,则的值为.9.有下列四个命题:①“若,则互为相反数”的逆命题;②“全等三角形的面积相等”的否命题;③“若,则有实根”的逆命题;④“若,则”的逆否命题;其中真命题的序号..为▲ .10.已知函数满足且当时总订正反有,其中. 若,则实数的取值范围是 .11.定义上的奇函数满足,若,则实数的取值范围为 .12.若函数有两个零点,则实数的取值范围 .13.(本小题满分14分)已知函数(1)判定并证明函数的奇偶性;(2)试证明在定义域内恒成立;(3)当时,恒成立,求m的取值范围.16. 解:(1)为偶函数,证明如下:定义域为:关于原点对称,对于任意有:------------------------2分 ()11212111()()()212212212x x x x x f x x x x --+-=-+=-=---- 1111(1)()()212212x x x x f x =+-=+=--成立所以为偶函数--------------------------------5分(2)因为定义域为:,当时,,,恒成立,------------7分当时,所以,由(1)可知:----------------9分综上所述,在定义域内恒成立--------------------------------------------10分(3)恒成立对恒成立,∴ ,∴ ,令证明在上为减函数(略)(不证明单调性扣........2.分).. ∴对恒成立 …………12分∴所以m的取值范围是…………14分bbas23232 5AC0 嫀c•^5 37882 93FA 鏺y/37074 90D2 郒C。

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限时训练(十一)一、单选(共15小题,满分30分)21. _____ what many people think, HIV cannot be spread through mosquitoes, a cough or sneeze, or by merely touching someone with Aids.A. Based onB. Contrary toC. Apart fromD. Regardless of22. “Prehistorical powers” is one of the 10 most popular phrases used by Chinese people, ______ many are frequently employed in online chats.A. of whomB. to whomC. through whichD. among which23. —Taylor Swift _____ the World's Highest-Paid Musicians of 2016 list.— Really? Unbelievable!A. tookB. madeC. toppedD. won24. When you feel alone, just look at the spaces between your fingers, and remember that's _____ my fingers fit perfectly.A. whatB. whereC. whyD. how25. In order to attract American students to the ____ Chinese arts, Zhao and her team have turned to master musicians, magicians and martial artists.A. authenticB. confidentialC. tentativeD. artificial26. Next year's key challenges include risks in the financial area and old issues that have yet ___.A. solvedB. been solvedC. to solveD. to be solved27. — Do you know anything about the intellectual property law?— Well, _____ you produce pirated goods, ____ you are against it.A. when … soB. unless…otherwiseC. if…thenD. although…yet28. It is on Spring Festival Eve, ______ every one is celebrating the Chinese new year, ______ Senior 3 students in China can take a rest from their study.A. when; thatB. that; whenC. when; whenD. that; that29. We’d visited the village without warning and selected our interview subjects _______, so that we would get the real data.A. beyond descriptionB. in particularC. by accidentD. at random30. Senior political figures worldwide have _____ one-China policy and have _____ support for the widely accepted principle after it was challenged by US president-elect Donald Trump.A. backed; voicedB. sustained; spokenC. approved; declinedD. supported; rejected31. The type and quantity of illegal drugs a person is carrying when ____ by the police determine the punishment, _____ from a small fine to life imprisonment.A. caught; rangingB. caught; rangedC. catching; rangingD. catching; ranged32. — Did they all pass the driving test?— Yes, ___________________, they all succeeded.A. as tough as they wereB. tough as was itC. tough as it wasD. as tough as were they33. “But for the fact that you _______ here for 3 years, I _______ in this key high school now, facing its endless homework and exams!” the poor girl cried to her helpless father.A. studied; wouldn’t have studiedB. studied; wouldn’t be studyingC. had studied; wouldn’t have studiedD. had studied; wouldn’t be studying34. — What makes you so nervous?— The China vs Iran World Cup qualifier will ________ tonight.A. set offB. show offC. take offD. kick off35. — It annoys me when a person's cell phone goes off during a movie! — Yeah, me too. It ____ _______.A. really bites my tongueB. really gets on my nervesC. makes me see the handwriting on the wallD. gets me to kill the fatted calf二、完形填空 (共 20 小题;每小题 1 分,满分 20 分)Until a few years ago, I was a calm person. If you were going to __36__ me I almost never lost it __37__; of course I felt hurt, but I didn’t show it.Then, one day, I met my husband and I fell __38__ in love with him, a proud Italian who loudly discusses things __39__ with himself when he’s not happy. Things got worse for me when we started __40 disagreeing __ on things. He seemed really angry and loud, while I seemed detached and polite. Truth is that I was __41__ too. Fight after fight, he always acted as if nothing had happened a few minutes after each quarrel, while my moments of __42__ discontent started to __43__ more and more in time until they became hours, sometimes even days.I felt this had to change and the conversation went __44__ like this:Me: “Either you change your __45.attitude__ when we fight or I will start avoiding any discussion, and this will __46__ our relationship.”Him: “Did you __47__the Mpemba Effect? If you put two __48.similar__ containers fill ed with the same amount of water into the fridge except that one has boiling water in it while the other one has water at ambient(周围的) __49__, the boiling water will __50.freeze__ faster than the ambient water. Baby, you got to boil first, to cool down faster. That’s why the Italians live __51__ than Canadians.”The connection he suggested is to be __52__, but I have learned a fact I didn’t know, one that has __53__ me to understand that if I’m angry about something or someone, for that anger to disappear, it has to be towards the __54__ or otherwise it is like hiding the dust under the __55__: your house might look clean, but it is not.36. A. cheat B. offend C. impress D. defend37. A. in return B. in place C. in public D. in time38. A. hopelessly B. steadily C. hurriedly D. blindly39. A. always B. ever C. even D. seldom40. A. working B. disagreeing C. operating D. trying41. A. boiling B. struggling C. controlling D. preparing42. A. possible B. abrupt C. extra D. inner43. A. spread B. withdraw C. recover D. expand44. A. more or less B. sooner or later C. by and by D. up and down45. A. vision B. viewpoint C. attitude D. attention46. A. compensate B. sacrifice C. mend D. clarify47. A. hear about B. worry about C. learn from D. hear from48. A. mobile B. relevant C. solid D. similar49. A. level B. temperature C. heat D. environment50. A. burst B. deposit C. explode D. freeze51. A. longer B. shorter C. wealthier D. simpler52. A. practiced B. proven C. inspected D. created53. A. informed B. reminded C. inspired D. required54. A. outside B. inside C. public D. personal三、任务型阅读Feet of ClayIn 604 BC, the second year of his reign, Babylonian King Nebuchadnezzar had a dream which left his spirit no rest and robbed him of his sleep. So he ordered that wise men of Babylon be called to interpret the dream for him.They answered the king, “O king, live forever, tell to your servants your dream, and we will declare the interpretat ion.” The king said, “The thing is gone out of my mind. Unless you tell me the dream, and the meaning of it, you shall be put to death. But if you tell the dream, and the meaning of it, you shall receive of me rewards, and gifts, and great honour.”Unluckily no one could fulfill the task. Hearing this, the king was in great anger, and commanded all the wise men of Babylon be put to death.When Arioch, to whom the king had given orders to destroy the wise men of Babylon, told the matter to the Prophet(先知) Daniel, he immediately went in to the king and begged for the time to resolve the question.After some mysterious praying, Daniel went to Arioch and said, “Destroy not the wise men of Babylon, bring me in before the king, and I will tell the solution to t he king.”The king said to Daniel, “Can you really tell me the dream that I saw, and the interpretation of it?” Daniel replied, “The secret that the king desires to know, none of the wise men, or the philosophers, can declare to the king. But there is a God in heaven that reveals mysteries, and He wants you to know what is going to happen”. “To me also,” Daniel added, “this secret is revealed, so I can reveal your dream.”Then Daniel began, “You, O king, saw a great statue: this statue, which was great an d high, stood before you, and the look was terrible. The head of this statue was of fine gold, but the breast and the arms of silver, and the belly and the thighs of brass(黄铜): And the legs of iron, the feet part of iron and part of clay. Then suddenly you saw a stone was cut out of a mountain without hands, and it struck the statue upon the feet that were of iron and of clay, and broke them in pieces. Then was the iron, the clay, the brass, the silver, and the gold broken to pieces together, and they were carried away by the wind. There was no place found for them, but the stone that struck the statue became a great mountain and filled the whole earth.”“This is the dream.We will also tell the interpretation to you.” He continued, “You are a king of kings, and the God of heaven has given you a kingdom. But as you dreamt, the toes of the feet were part of iron, and part of clay, the kingdom shall be partly strong, and partly broken. That means you will not rule forever. The other parts of the statue represent other kings that will come after you. The big rock stands for the kingdom God will set up. It will destroy all other kingdoms and it will last forever!”Then king Nebuchadnezzar fell on his face, and worshipped Daniel, and commanded that wise men of Babylon be pardoned from death. And the king made Daniel governor over all the provinces of Babylon, a much higher position than his former one.。

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