最高级2014年中考单项复习专项训练
2014中考化学综合复习专项训练-实验探究教程
2014中考化学综合复习专项训练--实验探究1、（催化剂）CuSO 4溶液对过氧化氢的分解具有催化作用。
有同学猜想其他盐溶液也能在这个反应中起同样的作用，于是他们做了以下的探究。
（1）请你帮助他们完成实验报告：（2）已知FeCl 3在水中可解离出Fe 3+ 和Cl -，同学们提出以下猜想：甲同学的猜想是；真正催化分解H 2O 2的是FeCl 3溶液中的H 2O ；乙同学的猜想是；真正催化分解H 2O 2的是FeCl 3溶液中的Fe 3+；丙同学的猜想是；真正催化分解H 2O 2的是FeCl 3溶液中的Cl -； 你认为最不可能的是同学的猜想， 理由是（3）同学们对余下的两个猜想，用实验进行了探究。
请你仔细分析后填表：2、（四川南充，催化剂）某化学兴趣小组对氧气的实验室制法进行了探究。
（1） 小明同学选用如图所示的装置制取氧气。
制取过程中所发生的化学反应方程式为： 实验前，小明同学先向仪器A 中加入水，然后将导气管放入水槽中，并打开仪器A 的活塞，观察导气管口是否有连续的气泡出现。
该实验操作的目的是： 。
（2）实验证明，CuSO 4溶液能催化过氧化氢的分解。
CuSO 4溶液主要含有三种粒子（H 2O 、Cu 2+ 、SO 42-），为了进一步探究CuSO 4溶液中哪种粒子能起催化作用。
小红同学作了如下分析和设计。
①小红同学认为最不可能的是H 2O ，他的理由是 ②要说明另外的两种粒子是否起到催化作用，小红同学设计了如下实验，完成了这次探究活动。
③如果要确定CuSO4是催化剂，还必须通过实验确定它在化学反应前后。
3、（氧气的性质）小婧同学学习化学后知道，镁在氧气中燃烧会生成白色的氧化镁固体。
但她在空气中点燃镁条时，却发现在生成的白色固体中还夹杂着少量的淡黄色固体。
【提出问题】为什么会生成淡黄色固体【查阅资料】小婧查阅资料，记录了下列几种物质的颜色：根据质量守恒定律，化学反应前后元素的种类不变，你认为不必查阅________的颜色。
2014中考化学复习精品试题训练-数形结合专题3解读
2014中考化学复习精品试题训练--数形结合专题3 1.甲、乙、丙三种物质的溶解度曲线如右图所示。
据图回答：(1)50℃时，乙物质的溶解度是 g ；(2)30℃时，三种物质的溶解度由大到小的顺序为 ；(3)要使接近饱和的丙物质溶液变为饱和，写出可采取的两种措施 ， ；(4)50℃时，将等质量的甲、乙、丙三种物质的饱和溶液同时降温至10℃时，析出晶体最多的是 ，所得溶液中溶质质量分数最小的是 。
2.右图是甲、乙两种固体物质的溶解度曲线。
(1)t 1℃时，甲的溶解度 ① 乙的溶解度（选填“大于”“等 于”或“小于”）；(2)要使接近饱和的甲溶液变为饱和溶液，可采取的方法 是 ② （只填一种）； (3)甲、乙各W g 分别加入到两只盛有100g 水的烧杯中，充分搅拌，在t 3℃时所得乙溶液为 ③ 溶液（选填“饱和”或“不饱和”）；若将温度都降低到t 2℃，甲溶液中溶质的质量分数 ④ 乙溶液中溶质的质量分数（选填“大于”“等于”或“小于”）。
3．二氧化硫气体是造成酸雨的主要气体，其水溶液叫亚硫酸(H 2SO 3 )。
硫化氢(H 2S)是一种具有臭鸡蛋气味的剧毒气体，其水溶液叫氢硫酸。
已知相同的条件下，氢硫酸的酸性弱于亚硫酸。
现在室温下向饱和的亚硫酸溶液中通入过．量．的硫化氢气体，反应的化学方程t 1 t 2 t 3 温度/℃式为：2H2S + H2SO3 = 3S↓ + 3H2O。
则下图中溶液的pH随通入硫化氢体积的变化曲线示意图正确的是4.刘明用石灰石(杂质不与酸反应，也不溶于水)和稀盐酸反应制取二氧化碳，在准备将反应后的废液倒进废液Array缸时，发现实验桌上有一瓶未知质量分数的Na2CO3溶液，他决定利用该废液，测定Na2CO3溶液中溶质的质量分数。
他将废液过滤，然后向废液中慢慢滴加Na2CO3溶液，加入Na2CO3溶液的质量与生成沉淀质量的关系如右图所示。
(1)在加入Na2CO3溶液的过程中，开始时没有发现沉淀生成，说明滤液中的溶质有______________________；（2）计算Na2CO3溶液中溶质的质量分数。
2014中考英语单项选择精品训练(4)附答案
2014中考英语单项选择精品训练（4）附答案一、单项选择( )1. The second Sunday of May is _______ Mother’s Day . It’s ________ special day for children to show their love for their mothers .A a , theB the , aC 不填，aD 不填，the( )2.—Congratulations ! Among the best pictures in the competition , I found ________ . When did you draw it ?---During the trip to the Yellow Mountain _________ May .A yours , inB yours , onC you , inD you , on( )3. Not only his parents but also his grandfather _______ to a lot of places of interest in our country since they came here .A has goneB has beenC have goneD have been( )4. –Do you want to buy the red pen or the yellow one ?--I’ll take ________ of them . The red one is for me and the yellow one is for my brother .A eitherB bothC neitherD all( )5.—How beautiful your school is !---Yeah , it ___________ to be one of the most beautiful schools in our city .A thinksB is thoughtC isn’t thoughtD doesn’t think( )6.________ isn’t easy _________ Meng Pejie to take good care of her adoptive mother(继母) who has been ill for many years .A It , ofB That’s , ofC That , forD It , for( )7.—Tom , do you know when your uncle _________? If he _______ , please call me .---No problem .A will come , will arriveB will come , arrivesC comes , arrivesD comes , will arrive( )8. Keep off the drugs(毒品) , _________ you and your family will be in great danger .A orB andC butD so( )9.—What do you think of our football match ?--Wonderful ! Our football team has never played _________ .A worseB worstC betterD best( )10. What _________ it is to go camping in _________ weather !A a great fun , so fineB a great fun , such a fineC great fun , so fine aD great fun , such fine( )11.—Look ! It ________ be Mrs. Smith .--It _____ be her . She has just gone to Shanghai .A can , mustn’tB must , can’tC must , mustn’tD can’t must( )12.—Bob , can you tell ________ in the future . ---Sorry , I can’t .A how the environment will be likeB how will the environment be likeC what the environment will be likeD what will the environment be like( )13. YangJia , a blind professor _______ calls on(号召) the disabled “Nothing about us is without us .” has devoted most of her life ________ English .A whose , to teachingB who , to teachingC that , for teachingD which , to teach( )14. Shirley ________ a book about China last year , but I don’t know if she has finished it .A has writtenB wroteC had writtenD was writing( )15.—Sorry , I haven’t told Dick to post the letter for you .--_________. I’ll post it myself tomorrow .A All rightB Not at allC Never mindD That’s good( ) 16. —Could you tell me something about the boy who helped you just now?— Sorry, I know nothing about him, we are _____.A. friendsB. neighborsC. classmatesD. strangers( ) 17. —I find most girls do better in language learning than boys.— In most cases it is so. Perhaps they are _______ in language.A. creativeB. betterC. helpfulD. talented( ) 18. —How can I improve my reading?—I think the most important is to ______ a good habit of reading.A. developB. showC. makeD. take( ) 19. —Do you know ________, Mike?—Sure. On May1, 2010A. when was World Expo Shanghai heldB. when World Expo Shanghai was heldC. how often was World Expo Shanghai heldD. how often World Expo Shanghai was held( ) 20. —The cake looks _____.—Yes. And it tastes even _____.A. well, good.B. good, worse.C. better, best.D. nice, better.参考答案1-5 CABBB 6-10 DBACD 11-15 BCBDC 16---20 DDABD****************************************************************【1】21. He is too tired _____ any longer.A. not to walkB. to walkC. walkingD. not walking22. He went to school without ______ to school.A. goB. goesC. goingD. to go23. He is afraid to speak in ______ public.A. the B a C. an D. /24._______people in the world are sending and receiving e-mails every day．A. Million ofB. Many millions ofC. Several million ofD. Several millions25. I would rather _____ the chance than ______her.A. not to take, to hurtB. not take, hurtC. not taking, hurtingD. don’t take, to hurt26. The teacher told us to _____another way to make sentences with the new words.A. thinks overB. think aboutC. thinking overD. think27. The old man feels _____ , maybe he is _____ ill.A. terribly, terribleB. terrible, terriblyC. terribly , terriblyD. terrible, terrible.28. Do you have _____ friends in your school?A. a lotB. a plentyC. lot ofD. plenty of29. ---Did you go to Jack's birthday party?---No, I ____A. am not invitedB. wasn't invitedC. haven't invitedD. didn't invite30. The old man lived _____but he didn’t feel ______A. lonely , aloneB. alone ,aloneC. alone ,lonelyD. lonely , lonely31. If you go to the park tomorrow morning,______A. so will heB. so he willC. so he doesD. so does he32. She spends too much _____ clothes.A. inB. forC. onD. over33. _____ I entered his room, he was writing a letter.A. WhenB. SinceC. WhileD. As34. Suddenly I heard a strange _____ downstairs, then came a man’s _____,“Who is over there?”A. sound; voiceB. voice; soundC. noise; soundD. noise; voice35. Jack always _____ to study French.A. stays upB. wakes upC. grows upD. gets up36. --I wonder if I ___ smoke here.--No, you___.A. ca n; mustn’tB. shall; won’tC. must; can’tD. may; mustn’t37. There were so many kinds of toy cars that I couldn’t decide ______.A. what to buyB. which one to buyC. to buy which oneD. which one should buy38. Someone is doing homework. Could you please ____ the TV a little?A. turn upB. turn onC. turn downD. turn off39. --- Can you tell me ____?--- Sorry, I’m new here.A. where is the bookstoreB. how I can get to the cinemaC. is there a bookstore near hereD. which bus shall I take40. --- Lin, is this Ben’s book?--- No, it ______ be his. He’s too young to read it.A. mustn’tB. can’tC. mightD. can参考答案21-25 BCDBB 26-30 BBDBC 31-35 ACAAA 36-40 ABCBB61. There is __________ international school near the new housing estate.A. anB. aC. theD. /62. Don't add too much salt __________ the soup, or it will be too salty.A. inB. onC. toD. at63. There is __________ snow in Shenzhen in winter, is there?A. fewB. a fewC. littleD. a little64. My deskmate Flora's handwriting is much better than __________.A. meB. mineC. ID. my65. At the foot of the hill, you can hear nothing but the __________ ofthe running water.A. speechB. talkC. voiceD. sound66. Don't worry, Wendy can look after your bird __________ when you're out.A. careB. carefulC. carelessD. carefully67. Tourists enjoy __________ in the sea at the beautiful beaches in Bangkok.A. swimB. to swimC. swimmingD. to swimming68. The iPad is one of __________ among the young people all over the world.A. the most popular tablet computersB. the most popular tablet computerC. the more popular tablet computersD. the more popular tablet computer69. —__________ has the foreign teacher been in Shanghai?—For one year.A. How oftenB. How soonC. How longD. How far70. When I arrived home yesterday, Grandpa __________ a phone call.A. makesB. is makingC. was makingD. made71. The cheese cake smelt so __________ that the kid asked for more.A. wellB. sweetC. awfulD. badly72. Plants and flowers __________ water and sun when they start growing.A. need toB. don't needC. needn'tD. need73. My parents __________ about 30,000 yuan for my college education in UKeach year.A. spendB. takeC. payD. cost74. She must be __________ forty, but she likes dressing up as a young girl.A. at firstB. at lastC. at leastD. at most75. It's not a good idea to make the boy __________ the new words again and again.A. copiesB. copyC. to copyD. copying76. Young Jimmy __________ painting two weeks ago, but soon he lost interest in it.A. took upB. took offC. took outD. took away77. Shu-How Lin __________ by two NBA teams years ago, but now he has become a brightstar in the Knicks.A. is refusedB. was refusedC. has been refusedD. will be refused78. I like summer best among the four seasons, __________ I can enjoy the long summervacation.A. butB. becauseC. soD. though79. Excuse me, could you please tell us __________?A. how can we get to the airportB. how we can get to the airportC. how could we get to the airportD. how we could get to the airport80. —Would you like me to help you with the housework?—__________.A. That's very kind of you.B. That's a good idea.C. You're welcome.D. Not at all.参考答案61~65 ACCBD 66~70 DCACC71~75 BDCCB 76~80ABBBA1. The rest of the students not allowed to leave the classroom at that time.A. areB. haveC. wasD. were2. —Whose book is this?—It’s not mine. It’s ______.A. someone elseB. someone else’sC. someone else’D. someone’s else3. ____ that a man ____ James had come to see you.A. It said; namedB. It was said; namingC. It says; namedD. It was said; named4. If he tomorrow, please tell me.A. comeB. comesC. will comeD. came5. I’m afraid of _____ at home alone.A. stayingB. beC. to stayD. live6. If I you, I a big house.A. was, would buyB. were, would like to buyC. were, would buyD. was, bought7. The film ______ for 5 minutes.A. has begunB. has startedC. has been onD. began8. Let’s see ______we can find some information about the city.A thatB ifC whatD which9._____his bike is lost? He has to go to school on foot.A. What ifB. How aboutC. Can you tell meD.I don’t know10. This didn’t trouble him .A. at the momentB. the slightestC. no longerD. in the slightest11. If you take my _____,you won’t tell a nyone about it.A. the adviceB. adviceC. an adviceD. advices12. ---Your wife is unhappy. Who ___her___？---Maybe her sister, Ms Liu?A. takes downB. looks upC. puts upD. lets down13. At the class meeting, all the students _____a lot of useful advice to help each other.A. came up withB. came outC. stayed upD. came up14. I found _____ very difficult to learn math well.A. whatB. itC. thatD. this15. He is afraid of______ English in public.A. speakB. speakingC. spokenD. speaks16. My sister has been in America for a year. She _______ the life there.A. is useB. used toC. is used toD. uses17. Mike _____ his homework three hours ago.A. finishedB. has finishedC. is finishingD. is going to finish18. I don’t know ______ he lives.A. whatB. howC. whereD. which19. If a friend said something bad ______ you, what would you do?A. aboutB. onC. forD. to20. I don’t know ______.A. what to do itB. how to doC. what to doD. to do what参考答案1-5 DBDBA 6-10 ACBAD 11-15 BDABB 16-20 CACAC。
2014中考化学专题复习考点训练-水资源的利用及保护1.
2014中考化学专题复习考点训练--水资源的利用及保护1一、选择题1.以下是净水的操作，单一操作相对净化程度由低到高的排列顺序正确的是（）①静置沉淀②过滤③吸附沉淀④蒸馏A．①②③④B．①④②③C．①③②④D．③①②④【答案】C【解析】静置是让不溶物利用自身重力自然沉降，不能分离；吸附主要是将小颗粒转化成大直径的固体不溶物后沉降；过滤可实现不溶物与液体的分离；而蒸馏则是净化度最高的方法，蒸馏得到的是蒸馏水，可视作纯净物。
2.下列有关水的描述中，不正确．．．的是A.电解水时在正极产生氧气B.水是由氢原子和氧原子构成的C.可用肥皂水来区分硬水和软水D.在沉淀、过滤、蒸馏等净化水的操作中，净化程度最高的是蒸馏【答案】B【解析】水是由分子构成的纯净物，它的最小结构单位是水分子，氢原子和氧原子是构成水分子的结构单位。
3.空气和水是人类宝贵的自然资源，下列关于空气和水的说法不正确的是BA. 空气的主要成分是氮气和氧气B. 造成空气污染的主要气体有CO、CO2、SO2等。
C.净化水的常用方法有：沉淀、过滤、吸附、蒸馏等D.人类可用的淡水资源十分有限，所以我们应当爱护水资源【答案】B【解析】CO2含量的增加会导致温室效应加剧，但CO2本身并不是大气的污染物，相反的，CO2是大自然碳氧循环体系中的重要组成物质。
4.自来水的生产过程主要包括以下流程,其中发生化学变化的是【】【答案】D【解析】自来水净化过程中，往往通过使用消毒剂来杀灭水的细菌和病毒，而消毒剂在水中发生的主要是化学变化。
5.下列对于水的认识正确的是A.任何溶液的溶剂都是水B.天然水分为硬水和软水C.我国可利用的淡水资源十分丰富D.水体有自净能力，生活污水可任意排放【答案】B【解析】水是最常见的溶剂，地球上的淡水资源并不丰富，水危机时刻在困扰着人类社会的发展，任意排放生活污水，会对水资源产生严重的污染。
6.下列关于水的说法错误的是A.淡化海水可解决淡水紧缺问题B.长期饮用硬水对人体的健康不利C.日常生活中的水大多是混合物D.过滤能除去天然水中的所有杂质【答案】D【解析】过滤只能除去水的不溶性的固体杂质，而不能除去可溶性的杂质。
2014中考英语单项选择精品训练(12)附答案
2014中考英语单项选择精品训练（12）附答案1. All the students agreed to go to Qingdao by ______ sea and camp by ______ sea.A. the; aB. 不填; theC. 不填; 不填D. a; the2. — Congratulations! Among the best pictures in the competition, I found _________. Whendid you draw it?— During the trip to the Yellow Mountain _________ May.A. yours; inB. yours; onC. you; inD. you; on3. — It is reported that in the basketball game China won against Japan by the heavy score of102-85.—_______ exciting news!A. How aB. What aC. HowD. What4. — Be careful! A car may hit you.— Thank you! I I so close to the road.A. didn’t know; am standingB. don’t know; am standingC. didn’t know; was standingD. didn’t know; would stand5. This morning our headteacher came to school _________ than ________ student in ourclass.A. much early; anyB. much earlier; anyC. much early; any otherD. much earlier; any other6. — We must act now because time is _______.—Yes. Let’s start.A. coming outB. giving outC. putting outD. running out7. — Shall we meet at the station at 8 a.m.?— In fact we _________. The train _________ until 10 a.m..A. mustn’t; doesn’t leaveB. mustn’t; leavesC. needn’t; won’t leaveD. needn’t; will leave8. — My mother doesn’t like going shopping in Hong Kong at all.— Well, shopping there isn’t liked by _________.A. anybodyB. nobodyC. everybodyD. somebody9. __________ generous __________ the little girl to share her toys with other kids.A. It’s; ofB.That’s; ofC. It’s; forD. That’s; for10. How time flies! It’s almost three years _______ we met last time.A. whenB. beforeC. whileD. since11. The factory ______ its waste into the river, but now it deals with the waste in a new way.A. used to dumpB. is used to dumpC. used to dumpingD. is used to dumping12. You can never imagine the great difficulty I had _________ her QQ number.A. to getB. gettingC got D. not to get13. In the UK, a woman usually doesn’t like to be asked how much _________.A. she is weighedB. is she weighedC. she weighsD. does she weigh14. —I’m out of breath. I can’t go any further.— _________! I’m sure you can make it.A. No problemB. What a pityC. Not badD. Come on15. The 30th London Olympic Games will be held _______ July 27, 2012.A. inB. on c. at D. from16. —_____ did your family spend New Year?—In our hometown.A. WhyB. WhenC. WhereD. How17. Mr. Li is healthy because he always eats lots of ______, such as onions and tomatoes.A. vegetablesB. fruitC. meat18. ______ boy in white shirt is my classmate.A. AB. TheC. /19. Tom is _____ than his brother Jim. He always gets better grades than Jim.A. higherB. smarterC. faster20. – Do you have any plans for this Sunday?– Yes, I _______ my grandparents.A. am visitingB. visitedC. have visited参考答案1. B2. A3. D4.C5. B6. D7. C8. C9. A 10. D11.A 12.B 13.C 14. D 15.B16—20 CABBA*************************************************************【1】结束1. The machine is dead.A. working properlyB. not aliveC. not workingD. running well2. I would like to have dinner with you when you are available.A. pleasedB. tiredC. hungryD. free3. I want to know the name of the book, in addition, I would like to buy it.A. more or lessB. believe or notC. what’s moreD. or so4. No one except Jane has been to Linda’s home.A. EvenB. OnlyC. BesidesD. Everyone but5. We won the football game and we felt on top of the world.A. happyB. excitingC. amazedD. surprised6. —I haven’t seen Mr. Black and his wife for a long time.—_____ Blacks are on ______ visit to Africa.A. /; aB. A; theC.The; aD. The;/7. —May I borrow this book?—Sorry, this book isn’t ______. It belongs to______.A. I; hisB. my; himC. mine; himD. mine; his8. —Can you tell me the difference between Sam and Ben?—Sure. Sam is ______than Ben. And he’s ______ of the two.A. taller; the fatterB. taller; fatterC. tall; the fatterD. less tall; fatter9. —Shall we always think of ______ water?—Yes. We will have no water to drink or use if we ______ wasting it now.A. saving; don’t stopB. save; don’t stopC. saving; won’t stopD. save; won’t stop10. —When did your aunt arrive ______ the USA?—She got to Washington _______ the afternon of January 15th.A. at; inB. in; inC. to; onD. in; on11. —Mary finds ______ important to tell the truth.—_______ honest girl she is!A. it; What anB. that; HowC. this; What aD. it; How12. —Do you know ______ it is from here to Shenzhen Museum?—It’s a ______ walk.A. how soon; ten-minutesB. how far; ten-minuteC.how often; ten minutesD. how long; ten minute13. —Have the students finished the work?—No. Only half of them ______ it. Because some of the work ______ really difficult.A. have done; isB. had done; areC. has done; isD. did, are14. —Shall we go shopping in KK Mall now?—Sorry. It’s not the right ______. It seems ______.A. place，rainB. weather，rainC. time，to rainD. way，to rain15. —______ I hand in my exercise book now, Mr. Lin?—No, you______. You may give it to me next week.A. Must; mustn’tB. Must; needn’tC. Can; may notD. Should; can’t16. —Could you please tell me what ______?—Ok. She ______ a salesgirl.A. does she do; isB. her job is; works asC. her job was; isD. did she; works as17. —Come and have a party in the room, ______?—OK. But you’d better ________ it tidy first.A. do you; to makeB. will you; makeC. won’t you; makesD. shall I; making18. —Mum, the washing machine doesn’t work well. It needs ________.—Yes. I will have it _______ tomorrow.A. repair; checkB. repairing; checkingC. repairing; checkedD. repaired; checked19. —Computers play a very important role in our life and work.—Right, but everything _____ a computer does depends on the man _____ uses it.A. that; whoB. which; thatC. that; whomD. which; who20. —May I speak to Mr. Fang, please?—__________A. I’m Mr. Fang.B. Who are you?C. This is Mr. Fang speaking.D. What for?参考答案1—5 CDCBA 6—10 CCAAD11—15 ABACB 16—20 BBCAC***********************************************************【3】结束101、There are plenty of _______ in our school. They work very hard.A、woman teachersB、woman teacherC、women teachersD、women teacher102、Who is _______ boy playing basketball on the playground.He is Tom. He joined ______ unusual basketball match last year.A、an. a.B、a. a.C、the. a.D、the. an.103、The rest of students in the classroom ______my classmates.A、isB、areC、beD、am104、Mrs Zhang has taught ______math for three years and she teaches very well.A、ourB、weC、usD、ours105、My son wants a pet dog for long, but I have no time to buy _____for him.A、itB、thatC、the oneD、one106、Mary, how old are you this gear?_______. And My parents just had a party for my ______birthday lastmonty.A、Fifteen, fifteenthB、Fiveteen, fiveteenthC、Fifteenth, fifteenD、Fiveteerth, fiveteen107、When shopping, keep your eyes ______for those energy-saving machines.A、openedB、openC、to openD、to be open108、I didn’t sleep ______last night. I feel tired now.A、wellB、niceC、fineD、good109、Are you worried about the coming exam?No, I think the more_____ you are, _____mistakes you’ll make.A、Careful, the lessB、Carefully, the fewerC、Careful, the leastD、Careful, the fewer110、The noisy boy ______stand up by a teacher.A、was madeB、was made toC、madeD、made to 111、_____does your sister do? She is a nurse.A、WhoB、WhatC、HowD、Why112、_____exciting the news is!A、What anB、WhatC、HowD、How an113、Hurry up. The car is coming.Wait a minute, Don’t cross the street _____the traffic lights are green.A、whileB、whenC、untilD、after114、I’m a football fan. I was interested in everything _____is about the 2010 World Cup.A、whoB、thatC、whereD、which115、What a nice day! How about playing football after school.________! Lest’s ask Li Ming to go with us.A、That’s OK.B、No problem.C、Good luck.D、Sounds great. 116.We are going better ________ English ________ our teacher’s help.A. in , atB. at , inC. in , withD. with , with117.How much does the ticket _________ from Beihai to Beijing?A. costB. takeC. spendD. pay118.Not only his parents but also his grandfather _________ to a lot of places of interest in our country since they came here.A. has goneB. has beenC. have goneD. have been 119.________ spending our vacation in a hotel, why not try hiking in the country?A. Instead ofB. Because ofC. Thanks toD. As for 120.The number of students in our school_________ more than two _________.A. are , thousandsB. are , thousandC. is , thousandD. is , thousands 参考答案101—105 CCBCD 106—110 ABADB111—115 BCCBD 116—120 CABAC一、单项选择（共15题，每题1分，计15分）从A、B、C、D四个选项中选出一个可以填入句中空白处的最佳答案。
2014中考化学专题复习备考训练-金属和金属材料5.
2014中考化学专题复习备考训练--金属和金属材料5 一、选择题 1.将X、Y、Z三种金属分别放入稀盐酸中，只有Y表面有气泡产生；再将X放入ZNO3溶液中，X表面有Z析出，则三种金属的活动性由强到弱的顺序是（ ） A、X>Y>Z B、Y>Z>X C、Y>X>Z D、
X>Z>Y 2.有X、Y、Z三种金属，只有Y在自然界主要以单质形式存在，如果把X放入Z的硫酸盐溶液中，X表面有Z析出。据此判断这三种金属的活动性由强到弱的顺序为 （ ） A．Y、X、Z B．Z、X、Y C．Y、Z、X D．X、Z、Y 3.下列有关金属的说法不正确的是（ ） A．常温下金属均为固态 B．合金的很多性能与组成它们的纯金属不同 C．铁在潮湿的空气中比在干燥的空气中更易生锈 D．铝在空气中表面会生成致密的氧化铝薄膜，使铝具有很好的抗腐蚀性能 4.金属R与CuSO4溶液中，有红色物质析出，放入ZnSO4溶液中无
现象。则三种金属活动性由弱到强排列的是 （ ） A. R、Zn、Cu B. Cu、R、Zn C. Zn、Cu、R D. Zn、R、
Cu
5.为比较A、B、C三种金属的活动性，某同学设计了下图所示实验，由此判断三种金属的活动性有强到弱的顺序是 （ ） A．A>C>B B．A>B>C C．C>A>B D．B>C>A
6.世界每年因锈蚀而损失的金属数量巨大，防止金属锈蚀以成为科学研究中的重大问题。下列有关金属锈蚀与保护措施中不正确的是 （ ） A. 铁锈蚀的实质是铁与空气中的氧气、水蒸气等发生了化学变
化 B. 同样的铁制品在海南比在兰州更易锈蚀 C. 在铁表面刷油漆可以防止铁锈蚀 D. 铝的抗锈蚀性能不铁强，生活中可用钢丝球洗刷铝锅 7.下列对实验现象的观察或记录中正确的是 （ ） A. 将黄铜与铜互相刻划，铜表面出现划痕 B. 室温下，向饱和食盐水中加入少量硝酸钾固体、搅拌，固体不溶解 C. 向蒸馏水中滴入2—3滴植物油，搅拌，植物油完全溶解 D. 镁在空气中燃烧，发出白光，生成氧化镁固体 8.取一定量的氧化铁与氧化铜的混合物，加入稀硫酸（含0.1mol H2SO4），恰好完全反应生成盐和水。原混合物中氧元素的质量是（ ） A．6.4g B．3.2g C．1.6g D．0.8g 9.用锌从含有硝酸银的废液中回收银，正确的化学方程式是（ ） A．Zn+Ag(NO3)2→Ag+Zn(NO3)2 B．Zn+AgNO3→Ag+ZnNO3 C．Zn+2AgNO3→2Ag+Zn(NO3)2 D．Zn+AgNO3→
2014中考化学复习精品试题训练-探究性专题3
2014中考化学复习精品试题训练--探究性专题3 1.下列有两组实验，请根据实验中的问题写方程式。 写出实验中“更高”的化学方程式：
① 写出反应“更快”的化学方程式： ②
2.某兴趣小组同学为证明NaOH溶液与稀盐酸发生了中和反应，从不
同角度设计了如下实验方案，并进行实验。 方案一：先用pH试纸测定NaOH溶液的pH，再滴加盐酸，并不断振荡溶液，同时测定混合溶液的pH，如果测得的pH逐渐变小且小于7，则证明NaOH溶液与稀盐酸发生了化学反应。 (1)用pH试纸测定溶液的pH时，正确的操作是：
。（2分） (2)简述强调“测得的pH小于7”的理
由： 。 方案二：先在NaOH溶液中滴加几滴酚酞溶液，溶液显红色，然后再滴加盐酸，可观察到红色逐渐消失，则证明NaOH溶液与稀盐酸发生了化学反应。 该组同学在向NaOH溶液中滴加酚酞溶液时，发现了一个意外现象：氢氧化钠溶液中滴入酚酞溶液，溶液变成了红色，过了一会儿红色就消失了。该小组对这种意外现象的原因作了如下猜想：①可能是酚酞溶液与空气中的氧气反应，使红色消失； ②可能是氢氧化钠溶液与空气中的二氧化碳反应，使红色消失。 (1)为验证猜想①，该组同学做了如下实验：将配制的氢氧化钠溶
液加热，并在液面上方滴一些植物油，然后在冷却后的溶液中滴入酚酞溶液。实验中“加热”和“滴入植物油”目的是 。实验结果表明酚酞溶液红色消失与空气中的氧气无关。 (2)为验证猜想②，该组同学做了如下实验：取了一定量的Na2CO3
溶液，在其中滴入酚酞溶液，发现溶液也呈现红色，由此可得出
以下两点结论： 结论1：说明Na2CO3溶液呈 性； 结论2：说明酚酞溶液红色消失与空气中的二氧化碳无关。 (3)该小组同学通过查阅资料得知：当氢氧化钠溶液浓度很大时，
就会出现上述意外现象。请设计实验证明该方案中取用的NaOH溶液浓度过大：①实验方法 ，②观察到的现象 。 3.已知一种固体化合物由C、H、O、Cu四种元素组成。向盛有该化合
2014届中考英语考点专项练习应试指导专项二_单项选择
专项二单项选择×练习题1.【2013山东潍坊】—I missed the beginning of _________cartoon The Lion King.—What a pity! You should have left school half ___________hour earlier.A. a ；anB. the ；aC. the ；anD. an ；the2.【2013山东莱芜】Lisa was so careless that she made many spelling ________ in her homework.A. plansB. decisionsC. gradesD. mistakes3.【2013贵州黔东南】26.—Have you read today’s newspaper?一Yes, but there isn’ t_____.A. new somethingB. something newC. new anythingD. anything new4.【2013新疆阜康、米泉】I tried several jackets on, but ______ of them looked good.A. bothB. eitherC. noneD. neither5.【2013辽宁锦州】David is a good boy. He always makes mistakes than others.A. littleB. lessC. fewD. fewer6.【2013江苏宿迁】5. —Did you sleep well last night?—Oh, no. noise outside the hotel almost drove me mad.A. Too muchB. Much tooC. Too manyD. So many7.【2013浙江宁波】Could you please speak a little more _______? I can’t follow you.A. quietlyB. quicklyC. loudlyD. slowly8.【2013山东德州】________, the Internet was only used by the government. But now it’s widely used in every field.A. As usualB. At firstC. After allD. So far9.【2013江苏宿迁】of the coats made of cotton. They feel comfortable.A. Two-thirds; isB. Two-thirds; areC. Two-third; isD. Two –third; are10.【2013广东茂名】The Dragon Boat Festival is celebrated ________ different ways _______ the same time in different places every year.A. on; inB. in; atC. on; at11.【2013广东茂名】If the weather ______ fine, we______ have a sports meeting this weekend.A. will be; willB. is; willC. was; would12.【2013山东东营】Many children ask their parents to give money to charity buy them snacks.A. later onB. even thoughC. rather thanD. in order to13.【2013浙江义乌】—Tommy, don’t make a mess in your room。
2014中考化学专题复习系列训练-化学与社会发展(精)
2014中考化学专题复习系列训练-- 化学与社会发展一、知识归纳1．化学变化中，能量以各种形式发生转化，电池就是一种能量转化装置，常见的电池是将能转化为______ 能的一种装置。
但废弃电池的乱扔乱放，会导致固体废弃物和____________________ 、___________________ 等重金属离子对土壤和环境的污染。
你认为处理废旧电池的一种方法是。
2．氢气是一种_______ 色_____ 味的气体，它的密度比空气 __________ 。
氢气具有______ 性，可作理想高能燃料，反应方程式： ___________________________ ，与其它燃料相比，它具有________ 、_______ 和 ______ 的优点，但目前未被推广使用是由于__________________________________________ 、 _____________ 。
氢气还具有________ 性，可用于冶炼金属，写出氢气还原氧化铜的方程式_，该反应属_____ 反应（基本反应类型），反应现象 ______________________________________ ，验证以上两点化学性质之前，必须进行的实验操作是 _____________ 。
3．可用于实验室制氢气的反应方程式为______________________________________________ ，现象__________________________________________ ，收集方法有_______ 法和____________ 法，制H2、O2、CO2 实验前都必须进行的一步操作为_______________________________ 。
4．常见的材料类型有：（1）________ 材料，包括__________ 和___________ （；2）____材料，包括 ______ 、_______ 和_______________ ；（3）___________ 材料，包括__________ 、 _______ 和 _________ ；（4）___________ 材料，如 _______________ 。
2014中考化学专题复习备考训练-金属和金属材料1(精)
2014中考化学专题复习备考训练--金属和金属材料1 一、选择题
1．下列生活用品用金属材料制作而成的是 （ ）B
2.青铜是人类最早使用的铜、锡合金，下列说法中不正确的是（ ）
A. 青铜属于纯净物 B. 青铜属于金属材料 C. 青铜的硬度比铜大 D. 青铜耐腐蚀，易铸造成形 3.下列家用物品中，都用到的材料是 （ ）
塑料油瓶 电话 电视机 溜冰鞋 A.合成材料 B.天然纤维 C.金属 D.玻璃 4.下列金属中，最活泼的是（ ） A.银 B.铜 C.镁 D.铝 5.下列有关实验现象的描述正确的是 （ ） A.铁丝在氧气中燃烧时火星四射，有黑色四氧化三铁固体生成 B.铁锈与稀盐酸反应后溶液由无色变成了浅绿色 C.硫在空气中燃烧发出微弱的淡蓝色火焰 D.打开浓盐酸试剂瓶的瓶塞，瓶口上方出现大量白烟 6.物质的性质决定其用途．下列因果关系不成立的是（ ） A. 洗洁精具有乳化功能，用于去除油污 B. 稀硫酸能与金属反应，用于去除铁锈 C. 钨的熔点高且能导电，用于制作白炽灯丝 D. 镁粉燃烧发出耀眼白光，用于制作照明弹 7.关于钢铁及制品的说法错误．．的是 （ ）
A．含有某些金属和碳元素的铁合金，其性能比纯铁更优良 B．高炉中炼铁的主要反应可表示为：Fe2O3 + 3CO = 2Fe + 3CO2 C．其它金属单质与铁一样，都能与盐酸反应得到氢气 D．家用菜刀经洗净擦干后可防止生锈 8．下列说法正确的是（ ） A．铝是人类最早利用的金属材料 B．铜是目前世界年产量最高的金属 C．大多数金属元素在自然界中以单质形式存在 D．日常使用的金属材料大多数是合金
高温 9.电影《黄金大劫案》上映后，里面用“王水”（浓盐酸与浓硝酸的混合液）溶解黄金的情引起了广泛的热议。黄金溶解在“王水”中形成HAuCl4（四氯合金酸），没有氢气产生。根据以上信息，下列有关说法正确的是（ ） ①“王水”溶解黄金是化学变化；②金比氢活泼；③HAuCl4中，Au的化合价为+3价；④可以将pH试纸伸入“王水”中测其酸碱度；⑤“王水”可以用铁质容器盛装。 A. ①④⑤ B. ①②③ C. ③④⑤ D. ①③ 10.定向爆破常伴有反应：2Al+Fe2O3高温Al2O3+2Fe，此反应中还原剂是（ ） A．Al B．Fe C．Fe2O3 D．Al2O3 二、填空、简答题 1.（1）在“南海一号”打捞出来的文物中，“金龙纹手镯”光彩夺目，
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【原创推荐】2013-2014学年度中考二轮复习专题强化小题狂练： 形容词最高级 1．--Do you know Lin Shuhao? -Yes. He is one of basketball players in the NBA. A. popular B. more popular C. the most popular 2．There isn’t an airport near where I live. The _______ one is about 90 miles away. A. busiest B. farthest C. newest D. nearest 3．Chiang Mai (清迈) has been one of tourist places for Chinese since the movie Lost in Thailand (《泰囧》) was shown. A. hot B. hotter C. hottest D. the hottest 4．Lanzhou is the only capital city that the Yellow River, the second ________ river in China, passes through.。 A. long B. longest C. longer D. length 5．At the Beijing Olympics, Bolt broke the 100-meter and 200-records and became the _____man in the world. A. fastest B. heaviest C. tallest D. slowest 6．—Miss Gao has ____________ free time than Mr Green. —I think so. She is busy every day. A. much B. less C. more D. fewer 7．---If there are ______ people driving , there will be ______ air pollution. --- Yes, the air will be fresher. A. less; less B. less; fewer C. fewer; fewer D. fewer; less 8．—Do you know Wugong Mountain is the first one in our province. —Yes, it’s famous for its grassland on the top. A. high B. higher C. highest D. highly 9．－Hi, Tom, which is the street in your city ? －High Street. Many people go shopping there. A. busy B. busiest C. quieter D. Quieter 10．－Many boy students think math is ______ English. －I agree. I’m weak in English. A. much difficult than B. so difficult as C. less difficult than D. more difficult than 11．— What do you think of the play? — I enjoy it very much. It’s the ______ one I have ever seen. A. worse B. better C. worst D. best 12．The Changjiang River is one of ________ in the world. A. the longest river B. the longest rivers C. the longer river D. longest river 13．–Why do you like climbing mountains? --Because they are there and climbing is _____thing I have ever done. A. the more exciting B. the most exciting C. the more excited D. the most excited 14．Chicago isn’t so famous __________ Washington D. C. . However, it’s the third __________ city in the USA. A. like; largest B. as; largest C. like; large D. as; large 15．I’m very proud of that Beijing is one of __________ cities in the world. A. big B. bigger C. biggest D. the biggest 16．Hainan is a very good island. It’s the second ________ island in China. A. largest B. large C. larger D. most large 17．Chicago isn’t so famous __________ Washington D. C. . However, it’s the third __________ city in the USA. A. like; largest B. as; largest C. like; large D. as; large 18．Lucy didn’t make mistakes in the math exam. She is _____ in my class. A. the most careful B. the most careless C. more careful D. much careful 19．一Who do you think is _______ actor? 一I think Zhao Benshan is． A．the most funny B．most funny C．the funniest D．funniest 20．Beijing is one of the ______ in the world today. A. busiest city B. busiest cities C. busy city D. busy cities 21．What kind of animal do you like ____ , the tiger, the lion or the elephant? A. good B. well C. better D. best 22．—Did you love your day trip? —Yes,we enjoyed the roller coaster ______ of all. A.most B.little C.more D.less 23．Lucy is one of ________ in her class. A. the good student B. the better student C. the best student D. the best students 24．Paris, the capital of France, is one of the _________ cities in Europe. A. liveliest B. more peaceful C. much fascinating D. thrilling 25． I think Hangzhou is one of ________ in China A. more beautiful cities B. most beautiful cities C. the most beautiful cities D. the more beautiful cities 26．Paris is one of in Europe. A、the liveliest cities B、the liveliest city C、the lively city 27．In my opinion, soccer is _____________ sport in the world. A. most popular B. popular C. more popular D. the most popular 28． Jim is not happy these days because he got ______ presents on New Year’s Day. A. the most B. the fewest C. the least D. the best 29． Shu-How Lin is now one of__________ basketball players in the NBA. A. popular B. more popular C. the most popular 30．--What do you think of Lady Gaga? --Maybe she is one of ________ singers in the world. A. popular B. more popular C. most popular D. the most popular
32．Titanic is _________ film I’ve ever seen. A. a more wonderful B. a most wonderful C. the most wonderful D. the more wonderful 33．The Yellow River is the second _____________river in our country. A. long B. longer C. longest D. the longest 34．Qingdao is one of cities in China. A. the most beautiful B. most beautiful C. more beautiful D. very beautiful 35． Chinese becomes one of the world’s _____________________________ . A. the most important language B. the most important languages C. most important language D. most important languages