周练1
化学学科周练(1) 日期：2014.9.8
一、选择题(本题包括15小题，每小题4分，共60分)
1．氧化还原反应在生产、生活中广泛存在，下列生产、生活中的实例不含有氧化还原反应的是()
A．金属冶炼B．燃放鞭炮C．食物腐败D．点制豆腐
2．以油类为溶剂的防锈漆称为油基防锈漆，由于环保方面的原因，目前要推广使用水基防锈漆，但水基漆较易溶解O2，在干燥之前易导致金属表面产生锈斑，为此要在水基漆中加入缓蚀剂，以下可作为缓蚀剂添加的是( )
A．KMnO4B．NaNO2C．FeCl3D．HNO3
3．下列物质转化需要加入还原剂才能实现的是( )
A．SO32－→SO2B．HCl→Cl2C．Na→Na＋D．SO2→S
4．已知：2Fe＋3Br2＝2FeBr32Fe3＋＋2I—＝2Fe2＋＋I2，现将Fe(NO3)2溶液分别滴入到以下溶液中：①H2SO4②HNO3③溴水④碘水，其中能使Fe2＋转变成Fe3＋的是( ) A．只有②③B．①②③C．②③④D．全部
5．202010年10月1日下午18时59分57秒，中国探月工程先导星“嫦娥二号”在西昌点火升空，准确入轨。
月球上有着非常丰富的钛铁矿(主要成分是FeTiO3)资源。
已知钛铁矿与
氢气在1000℃条件下发生如下反应：下列有关该反应的说法错误的是()
A．FeTiO3中Fe显＋2价，Ti显＋4价B．TiO2既不是氧化产物也不是还原产物C．反应中生成1 mol铁将转移3 mol电子D．FeTiO3在反应中作氧化剂
6．有甲、乙、丙、丁四种金属，仅甲在自然界主要以游离态存在；丙盐的水溶液不能用丁制的容器盛放；丁与乙盐的水溶液不反应。
则这四种金属的活动性由强到弱的顺序可能是A．甲乙丙丁B．丁乙丙甲C．丙乙丁甲D．乙丁丙甲
7．已知在热的碱性溶液中，NaClO发生如下反应：3NaClO=2NaCl+NaClO3。
在相同条件下NaClO2也能发生类似的反应，其最终产物是()
A．NaCl、NaClO B．NaCl、NaClO3 C．NaClO、NaClO3D．NaClO3、NaClO4
8．根据反应：2H2S+O2=2S↓+2H2O，4NaI+O2+2H2SO4=2I2+2Na2SO4+2H2O，Na2S+I2=2NaI+S↓。
下列物质的氧化性强弱判断正确的是()
A．O2>I2>S B．H2S>NaI>H2O C．S>I2>O2 D．H2O>NaI>H2S
9．含有a mol FeBr2的溶液中，通入x mol Cl2，下列各项为通Cl2过程中，溶液内发生反应的离子方程式，其中不正确的是()
A．x=0.4a，2Fe2++Cl2===2Fe3++2Cl-B．x=0.6a，2Br-+Cl2===Br2+2Cl-
C．x=a，2Fe2++2Br-+2Cl2===Br2+2Fe3++4Cl-D．x=1.5a，2Fe2++4Br-+3Cl2===2Br2+2Fe3++6Cl-10．在浓盐酸中H3AsO3与SnCl2反应的离子方程式为：3SnCl2＋12Cl-＋2H3AsO3＋6H＋＝2As ＋3SnCl62-＋6M，关于该反应的说法中正确的组合是( )
①氧化剂是H3AsO3；②还原性：Cl-＞As；③每生成7.5gAs，还原剂失去的电子为0.3 mol；
④M为OH-；⑤SnCl62-是氧化产物。
A．①③⑤B．①②④⑤C．①②③④D．只有①③11．R2O8n－离子在一定条件下可以把Mn2＋离子氧化为MnO4－，若反应后R2O8n－离子变为RO42－离子，又知反应中氧化剂与还原剂的物质的量之比为5:2，则n值是( )
A．4 B．3 C．2 D．1
12．已知Cu2S与某浓度的硝酸反应时，生成硝酸铜和硫酸，若反应中Cu2S与HNO3的物质的量之比为2:13，则该反应的还原产物为( )
A．N2O B．NO C．NO2D．N2O3
13．臭氧可以使湿润的淀粉碘化钾试纸变蓝，化学方程式为：2KI+O3+H2O=2KOH+I2 +O2，下列叙述正确的是( )
A．O3在反应中被还原为O2B．该反应的还原产物为I2
C．1mol O3在反应中得到2mol电子D．反应中氧化产物与还原产物物质的量之比为1:3 14．物质的量之比为2：5的锌与稀硝酸反应，若硝酸被还原的产物为N2O，反应结束后锌没有剩余，则该反应中被还原的硝酸与未被还原的硝酸的物质的量之比是( )
A．1：4 B．1：5 C．2：3 D．2：5
15．2010年9、10月间，中国与西方国家因稀土出口问题产生了摩擦。
稀土铈(Ce)元素是一种极为重要的稀土元素，主要存在于独居石中，金属铈在空气中易被氧化而变暗，受热
时易燃烧，遇水很快反应。
已知铈常见的化合价为＋3和＋4，氧化性：Ce4＋>Fe3＋。
下列说法正确的是()
A．电解熔融CeO2制Ce，铈在阳极获得
B．铈溶于氢碘酸的化学方程式可表示为Ce＋4HI===CeI4＋2H2↑
C．用Ce(SO4)2溶液滴定硫酸亚铁溶液，其离子方程式为Ce4＋＋2Fe2＋===Ce3＋＋2Fe3＋D．四种稳定的核素13658Ce、13858Ce、14058Ce、14258Ce，它们互称为同位素
二、非选择题(本题包括4小题，共38分)
16．(6分)(1)在淀粉碘化钾溶液中，滴加少量次氯酸钠碱性溶液，立即会看到溶液变蓝色，有关反应的离子方程式为_________________________________________________。
(2)在碘和淀粉形成的蓝色溶液中，滴加亚硫酸钠碱性溶液，发现蓝色逐渐消失，有关反应的离子方程式是_____________________________________ _______________。
(3)有A、B、C、D四种金属，将A、B用导线连接后浸入稀H2SO4中，A上放出氢气，B 逐渐溶解生成B2＋；电解含A2＋和C2＋的混合溶液时，阴极上先析出C；将D放入含B2＋的硝酸溶液中，D表面有B析出，同时生成D2＋。
则这四种金属阳离子的氧化性由强到弱的顺序是。
17．(12分)氧化还原反应中实际上包含氧化和还原两个过程。
下面是一个还原过程的反应式：NO3-+4H++3e-===NO↑+2H2O。
KMnO4、Na2CO3、Cu2O、Fe2(SO4)3四种物质中的一种物质(甲)能使上述还原过程发生。
(1)写出该氧化还原反应的化学方程式：
______________________________________________________________________。
(2)反应中硝酸体现了____ ____、____ ____。
(3)反应中若产生标准状况下11.2 L气体，则转移电子的物质的量是___ _____mol。
(4)现称取含有杂质的甲样品(杂质与酸不反应)5.4 g，恰好与100 mL 1.4 mol/L的硝酸溶液完全反应，则该样品的纯度为____ ____。
(5)若1mol甲与某浓度硝酸反应时，被还原硝酸的物质的量增加，原因是______________ _______________________________________________________________________。
18．(11分)三氟化氮(NF3)是一种新型电子材料，它在潮湿的空气中与水蒸气能发生氧化还
原反应，其反应的产物有：HF、NO和HNO3，请根据要求回答下列问题：
(1)反应过程中，被氧化与被还原的元素原子的物质的量之比为___ ____。
(2)写出该反应的化学方程式_____________________________ _____________。
若反应中生成0.2 mol HNO3，转移的电子数目为____________个。
(3)NF3是一种无色、无臭的气体，但一旦NF3在空气中泄漏，还是易于发现，你判断该气体泄漏时的现象是___________________________ 。
(4)一旦NF3泄漏，可以用NaOH溶液喷淋的方法减少污染，其产物除NaNO2、NaF、H2O 外，还肯定有___ _______(填化学式)。
19．(11分)某科研小组用MnO2和浓盐酸制备Cl2时，利用刚吸收过少量SO2的NaOH溶液对其尾气进行吸收处理。
(1)请完成SO2与过量NaOH溶液反应的化学方程式：SO2+2NaOH = ________________。
(2)反应Cl2+Na2SO3+2 NaOH===2NaCl+Na2SO4+H2O中的还原剂为________________。
-．请设计实验，探(3)吸收尾气一段时间后，吸收液(强碱性)中肯定存在Cl-、OH-和SO2
4
究该吸收液中可能存在的其他阴离子(不考虑
．．．空气的CO2的影响)
①提出合理假设
假设1：只存在SO32-；假设2：既不存在SO32-也不存在ClO-；假设3：_____________。
②设计实验方案，进行实验。
请在答题卡上写出实验步骤以及预期现象和结论。
限选实验试剂：3moL/LH2SO4、1moL/LNaOH、0.01mol/LKMnO4、淀粉-KI溶液、紫色石蕊试液。
英语周周练1
英语周周练（一）一、完形：David is a middle school student. He lived in a small 1 for fifteen years. His father, Mr Hill, was a rich farmer and later on he 2 a shop in our town. He bought a house here last month. His 3 moved to the new house and his son began to study in our class. But he had 4 friends here. At first he often played by 5 .His neighbour Cathy is a kind girl. She has many friends. She finds the boy never talks with anybody and decides to help him. David 6 to stay with her and t alks to her a lot. Now they’re good friends.One afternoon, Cathy told David. “It’ll be my sixteenth birthday tomorrow. I’ll have a birthday party. Will you please come?”“7 . I’m glad to,”the boy said happily.David got home and thought of a 8 he could give to Cathy. He was sorry that he 9 to ask the girl what she liked. He couldn’t call her because he didn’t know her telephone 10 . At that moment Mrs Hill came and asked, “What’s the matter, dear?”“What would you like if it was your sixteenth birthday, Mummy?”“Nothing,”the woman said, “I just with I were 16.”1. A. town B. city C. village D. country2. A. open B. opens C. opened D. opening3. A. home B. house C. building D. family4. A. a few B. few C. a little D. little5. A. himself B. him C. his D. he6. A. enjoy B. enjoys C. like D. likes7. A. Well B. Oh C. Mm D. Certainly8. A. prize B. praise C. present D. price9. A. forgot B. forget C. remember D. remembered10. A. code（密码） B. number C. place D. addressCCDBA，DDCAB二、阅读：Can dolphins talk? Maybe they can’t talk with words, but they talk with sounds. They show their feelings with sounds.Dolphins travel in a group. We call a group of fish a “school”. They don’t study, but they travel together.Dolphins talk to the other dolphins in the school. They give information. They tell when they are happy or sad or afraid. They say “welcome”when a dolphin comes back to the school. They talk when they play.They make a few sounds above water. They make many more sounds under water. People cannot hear these sounds because they are very, very high. Scientists make tapes of the sounds and study them.Sometimes people catch a dolphin for a large aquarium（水族馆）. People can watch the dolphins in a show. Dolphins don’t like to be away from their school in an aquarium. They are sad and lonely（孤独的）.There are many stories about dolphins. They help people. Sometimes they save somebody’s life. Dolphin meat is good, but people don’t like to kill them. They say that dolphins bring good luck. Many people believe this.1. Dolphins show their feelings with ___________ .A. picturesB. wordsC. waterD. sounds2. People can’t hear the dolphin’s sounds beca use ________ .A. they are above the waterB. they are under the waterC. they are very highD. they are very low3. Which one is true according to the passage?A. Dolphins swim together in a school because they want to studyB. They don’t study, but they travel in a groupC. Dolphins like to be away from their school on an island.D. Dolphins like to kill people（四）ABC三:改错Hi Susan,I'm sorry that I wasn't able to return to your bike on time yesterday. I mean to give it back to you before four in the afternoon, and I was hold up on my way back. Just before I turned corner of Park Street, I happened to see a accident. A little girl was hurt andher mother needed help. So I helped them going to the nearest hospital. I stayed here for one and a half hour and made sure that the girl was all right. When I got back, it were already 6 pm. I hope you understand.Thank you!Li Ling 76. to 77. mean→meant 78. and→but 79. hold→held 80. turned the corner81. an 82. going→go 83. here→there 84. hour→hours 85. were→was四、写作：假定你是李华，你的美国朋友打算暑期来北京旅游，来信询问改建后前门大街的情况。
高考复习周周练(1)
3.下列各句中，划线的成语使用恰当的一句是
A．许多农民巧妙地将服装厂剪裁后废弃的“下脚料”做成帘子， 当作蔬菜大棚的“棉被“，这真是一念之差，变废为宝。 B．王大伯十分喜爱小动物，只要见到流浪的小猫小狗，他都要想 办法把它们喂饱，有的人对此感到不解，他却乐此不疲。 C．文艺演出现场，身着盛装的表演者光着脚、微笑着，一边跳着 傣族舞，一边向人们泼水致意，在场群众纷纷拍手称快。 D．厂长动情地说：“为了扭转目前的不利局面，我们将采用一种 新的对策，希望大家共同努力，功败垂成，在此一举！”
蛰伏 尺牍 惶悚 亲睐
口讷 佝偻 凑和 岑寂
声名鹊起 竭泽而鱼 恣意妄为 义愤填膺
[解析] B项中“竭泽而鱼”应改为“竭泽而渔”； C项中“凑和”应改为“凑合”；D项中“亲睐”应改为 “青睐” 补注：稗(bà)官野史:略称稗史。泛 称记载轶闻琐事的文字.发轫 (rèn):比 喻新事物活某种局面开始出现。殄灭 （tiǎn）：消灭。佝偻（gōulóu）∶ 脊背向前弯曲。伛偻（yǔlǚ）：弯腰 驼背。口讷（ nè）：说话迟钝。
5．阅读下面文字，翻译句子。 楚庄王谋事而当，群臣莫能逮，退朝而有忧色。申公 巫进曰：“君退朝而有忧色，何也？”楚王曰：“吾闻之， 诸侯自择师者王，自择友者霸，足己而君臣莫之若者亡。 今以不谷之不肖而议于朝，且群臣莫能逮，吾国其几于亡 矣，吾是以有忧色也。”（刘向《新序· 杂事第一》）
1)诸侯自择师者王自择友者霸，足己而君臣莫之若者亡。 诸侯能自己选择老师的，就能称王；能自己选择朋友的， 就能称霸；自满自足而群臣比不上他的，就会亡国。
1．下列划线的字的读音，全都与所给注音相同的一组 A．殷yīn 殷勤 殷红 殷切期盼 家道殷富 B．调tiáo 调和 调停 风调雨顺 调兵遣将 C．识shí 识趣 卓识 识微见远 识礼知书 D．朝zhāo 朝晖 朝觐 朝不保夕 朝秦暮楚
七年级数学周练1试题
智才艺州攀枝花市创界学校长安七年级数学周练〔1〕班级：一、精心选一选，你肯定很棒1、在－0.1，25，4，－8，0，100，13-中，正数有()个。
A、1B、2C、3D、42、以下说法中正确的选项是()A．正有理数和负有理数统称为有理数B．零的意义是没有C．零是最小的自然数D．正数和分数统称为有理数3、数轴上与原点间隔小于4的整数点有()A、3个B、4个C、6个D、7个4、小明第一次向东走40米，第二次向西走30米，第三次向西走40米，最后相当于小明()A、向西走110米B、向西走50米C、向西走30米D、向东走30米5、在数轴上，到原点间隔5个单位长度，且在数轴右边的数是()A、－5B、＋5C、5±D、156、－14的绝对值是()A．14B．4C．－14D．－4二、认真填一填，你一定能行1、孔子出生于公元前551年，假设用551-年表示，那么李白出生于公元701年表示为。
_______、_______。
4、以下各数:-47,3,+3,-19,8.02,0,-8,,419-其中,正数有＿____个,负数有 ＿______个. 5、 某粮店出售的三种品牌的面粉袋上，分别标有质量为〔25±0.1〕kg 、〔25±0.2〕kg 、〔25±0.3〕kg 的字样，从中任意拿出两袋，它们的质量最多相差：。
6、观察找规律,在()内填数 (1)1,2,3,4,5,6,()(2)1,21,31,41,() (3)1,4,9,16,25,()(4)5,8,11,14,17,()(5)1,2,4,7,11,16,()7、数轴上间隔表示3的点4个单位长度的点有个，表示的数是。
8、利用数轴，请写出大于－2而小于3的整数分别是9、___________的绝对值是其本身．10、绝对值是6的整数是___________，绝对值小于3的整数有__________．11、35-=__________；8--=_________；1532-=_________；53-++=_________．12、用“>〞、“<〞或者“=〞填空：3-__________2.7； 5.5-_________7.2-13、如图是按照一定规律画出的树型图〔1〕〔2〕〔3〕(4)经观察发现：图〔2〕比图〔1〕多出2个树枝，图〔3〕比图〔2〕多出5个树枝，图〔4〕比图〔3〕多出10个树枝，照此规律，图〔7〕比图〔6〕多出个树枝。
周周练1
一、阅读理解AI was never very neat, while my roommate Kate was extremely organized. Each of her objects had its place, but mine always hid somewhere. She even labeled (贴标签) everything always looked for everything. Over time, Kate got nearer and I got messier. She would push my dirty clothing over, and I would lay my books on hertidy desk. We both got tired of each other.War broke out one evening. Kate came into the room. Soon, I heard her screaming, "Take your shoes away! Why under my bed!" Deafened, I saw my shoes flying at me.I jumped to my feet and started yelling. She yelled back louder.The room was filled with anger. We could not have stayed together for a single minute but for a phone call. Kate answered it. From her end of the conversation, I could tell right away her grandma was seriously ill. When she hung up, she quickly crawled (爬) under her covers, sobbing. Obviously, that was something she should not go through alone All of a sudden , a warm feeling of sympathy rose up in my heart,Slowly, I collected the pencils, took back the books, made my bed, cleaned the socks and swept the floor, even on her side. I got so into my work that I even didn't noticed Kate had sat up.She was watching, her tears dried and her expression one of disbelief. Then, she reached out her hands to grasp mine. I looked up into her eyes. She smiled at me. "Thanks."Kate and I stayed roommates for the rest of the year. We didn't always agree, but we learned the key to living together: giving in. cleaning up and holding on.1. What made Kate so angry one evening?A. She couldn't find her books.B. She heard the author shouting loud.C, She got the news that her grandma was ill.D. She saw the author's shoes beneath her bed.2. The author tidied up the room most probably because___.A. she was scared by Kate's angerB. she hated herself for being so messyC. she wanted to show her careD. she was asked by Kate to do so3. How is Paragraph one mainly developed?A. By analyzing causesB. By showing differences.C. By describing a processD. By following time order.4. What might be the best title for the story?A. My Friend KatB. Hard Work Pays OffC. How to Be OrganizedD. Learning to Be RoommatesBPassenger pigeons (旅鸽)once flew over much of the United States in unbelievable numbers. Written accounts from the 18th and 19th centuries described flocks (群)so large that they darkened the sky forhours.It was calculated that when it population reached its highest point , there were more than 3billlion passenger pigeons—a number equal to 24 to 40 percent of the total bird population in the United States, making it perhaps the most abundant bird in the world. Even as late as 1870 when their numbers had already become smaller, a flock believed to be 1 mile wide and 320 miles (about 515 kilometers) long was seen near Cincinnati.Sadly the abundance of passenger pigeons may have been their undoing. Where the birds were most abundant, people believed there was an ever-lasting supply and killed them by the thousands. Commercial hunters attracted them to small clearings with grain, waited until pigeons had settled to feed, then threw large nets over them, taking hundreds at a time. The birds were shipped to large cities and sold in restaurants.By the closing decades of the 19th century ,the hardwood forests where passenger pigeons nested had been damaged by American’s need for wood, which scattered (驱散) the flocks and forced the birds to go farther north, where cold temperatures and storms contributed to their decline. Soon the great flocks were gone, never to be seen again.In 1897, the state of Michigan passed a law prohibiting the killing of passenger pigeons but by then, no sizable flocks had been seen in the state for 10 years. The last confirmed wi ld pigeon in the United States was shot by a boy in Pike County, Ohio, in 1900. For a time , a few birds survived under human care. The last of them, known affectionately as Martha, died at the Cincinnati Zoological Garden on September 1, 1914.5. In the 18th and early 19th centuries, passenger pigeons____.A. were the biggest bird in the worldB. lived mainly in the south of AmericaC. did great harm to the natural environmentD. were the largest bird population in the Us6. The underlined word “ undoing” probably refers to the pigeons’ ____.A. escapeB. ruinC. liberationD. evolution7. What was the main reason for people to kill passenger pigeons?A. To seek pleasure.B. To save other birds.C. To make money.D. To protect crops.8. What can we infer about the law passed in Michigan?A. It was ignored by the public.B. It was declared too late.C. It was unfair.D. It was strict.二 .完形填空（共20小题；每题1.5分，满分30分）Joe Simpson and Simon Yates were the first people to climb the West Face of the Siula Grande in the Andes mountains. They reached the top 9 but on their way back conditions were very 10 . Joe fell and broke his leg. They both knew that if Simon 11 alone, he would probably get back 12 . But Simon decided to risk his 13 and try to lower Joe down the mountain on a rope（绳）.As they 14 down, the weather got worse. Then another 15 occurred. They couldn’t see or hear each other and, 16 , Simon lowered his friend over the edge of a precipice（峭壁）. It was 17 for Joe to climb back or for Simon to pull him up. Joe’s 18 was pulling Simon slowly towards the precipice. 19 ,after more than an hour in the dark and the icy cold, Simon had to 20 . In tears, he cut the rope. Joe 21 into a large crevasse（裂缝）in the ice below. He had no food or water and he was in terrible pain. He couldn’t walk, but he 22 to get out of the crevasse and started to 23 towards their camp, nearly ten kilometers 24 .Simon had 25 the camp at the foot of the mountain. He thought that Joe must be 26 , but he didn’t want to leave27 . Three days later, in the middle of the night, he heard Joe’s voice. He couldn’t 28 it. Joe was there, a few meters from their tent, still alive.9.A. hurriedly B. carefully .C. successfully D. early10. A. difficult B. similar C. special D. normal11. A. climbed B. worked C. rested . D. continued12. A. unwillingly B. safely C. slowly D. regretfully13. A. fortune B. time C. health D. life14. A. lay B. settled C. went D. looked15. A. damage B. storm C. change D. trouble16. A. by mistake B. by chance C. by choice D. by luck17. A. unnecessary B. practical C. important D. impossible18. A. height B. weight C. strength .D. equipment19. A. Finally B. Patiently . C. Surely D. Quickly20. A. stand back B. take a rest C. make a decision .D. hold on21. A. jumped B. fell C. escaped D. backed22. A. managed B. planned C. waited D. hoped23. A. run B. skate C. move D. march24. A. around B. away C. above D. along25. A. headed for B. travelled to C. left for D. returned to26. A. dead B. hurt C. weak D. late27. A. secretly B. tiredly .C. immediately D. anxiously28. A. find B. believe C. make D. accept三．语法填空Jonny: Hey! I'm just practicing Tai Chi(太极).Would you like to join me?Peter: I know nothing about it. Is it difficult?Jonny: It seems easy, but you need a lot of practice. You just follow me like this.Peter: OK. Don't laugh 29 me. I may look funny.Jonny: Bend your knees slightly and reach out your arms like tree branches, naturally and 30 (soft). Try to keep your body straight. Move slowly , then be sure to keep your balance and don't let your body shake.Peter: I cannot control my body well. My legs become 31 (pain)Jonny: Keep 32 (hold) your position for a while .It helps develop your strength and flexibility .Raise your leg and let 33 stay in the air for seconds.Peter: I feel my legs shaking . I cannot do this any longer.Jonny: Be patient! Tai Chi 34 (call)“shadow boxing" in English. It asks you to act like water: to be flexible as well 35 strong. In real competition, a TaiChi master borrows the strength of the competitor and uses this energy to fight back. The 36 (hard) you try to beat him, the more likely you will get hit.He controls you!Peter: Unbelievable! Oh..., 37 you don't mind, I'll stop and take a deep 38 . 四．改错Two years before, I traveled to Brazil and I rented for a car. Unfortunate, I had an accident and hit another car, and I needed to stay in a hospital for at least two week. 1 called my parents, so I did not tell them what had happened. I knew that they will be worried about myself because I was so farther away, and that my mother would not sleep if she knew. Therefore, I told them interested stories and how I was enjoying Brazil. As a result, nobody knew truth. I still think that it was the right thing to do.英语周周练答题卷一、阅读理解 三、语法填空61_________. 62________. 63_________. 64________. 65________. 66_________. 67________. 68_________. 69________. 70________.四、短文改错Two years before, I traveled to Brazil and I rented for a car. Unfortunate, I had an accident and hit another car, and I needed to stay in a hospital for at least two week. 1 called my parents, so I did not tell them what had happened. I knew that they will be worried about myself because I was so farther away, and that my mother would not sleep if she knew.Therefore, I told them interested stories and how I was enjoying Brazil. As a result, nobody knew truth. I still think that it was the right thing to do.AB CDA BC DAB C DAB CD1.2.3.4.5.6. 7.8. 二、完 型41.42.43.44.45.46.47.48.49.50.51.52.53.54.55.56.57.58.59.60.24-27DBCD36． D 37． C 38． B 39．D41—45 CADBD 46—50 CDADB 51—55 ACBAC 56—60 BDACB61.at 62.Softly 63.painful 64.holding 65.it 66. iscalled 67.as 68.harder 69.if 70.breath。
【尚书堂】六年级秋季数学培优班答案（周周练1-4）
【尚书堂秋季班】六年级周周练1星期一 聪明出于勤奋，天才在于积累3232323213131313323232505053232202321+++()()8243147101027225==+=-+=-x x x x x x 解：8407120237604076040=⨯=-=-+=x x x x x x x 解：星期二 书山有路勤为径，学海无涯苦作舟。
1、甲数和乙数的比是2︰5，乙数和丙数的比是7︰3，甲数乙数和丙数的比是（ 14:35:15 ）·2、有一推苹果， 4个4个地数余3个，5个5个地数余4个，6个6个地数余5个。
这堆苹果最少有（ 59 ）个。
星期三 成功＝艰苦劳动＋正确方法＋少说空话1、112的分子加上8，要使分数大小不变，分母应加上（ 44 ） 2、四个连续奇数的积是3465，这四个奇数各是多少？119753465⨯⨯⨯= 分别是5、7、9、11。
3、 植树节那天，六年级学生去植树，如果每人栽6棵，还剩下40棵树苗；如果每人栽8棵，就缺少40棵树苗。
这个年级共有多少人？树苗一共有多少棵？解：设六年级共有X 人。
6X+40=8X-40X=40树苗 6×40+40=280（棵）答：这个年级共有40人，树苗一共有280棵。
星期四 再多一点努力，就多一点成功．1、已知大正方形比小正方形边长多2厘米，大正方形比小正方形的面积大40平方厘米。
求大、小正方形的面积各是多少平方厘米？()cm 91441140=÷÷⨯⨯-小正方形边长为3cm 面积是28199cm =⨯大正方形边长为5cm 面积是21211111cm =⨯答：略。
2、一条长600米的环形跑道，小华每分钟行60米；王明每分钟比小华多行30米。
两人同时同地反向而行，求经过多少分钟两人可以相遇？()4306060600=++÷分钟答：略。
3、A+32=B ×43=C-51=D ÷54，把A 、B 、C 、D 按从大到小的顺序排列起来。
人教版一年级上册数学周周练一
满分：100分【基础练习】1. 数sh ǔ一yi数sh ǔ，连li án一yi连li án。
（20分）2. 比b ǐ一yi比b ǐ。
（10分） （1）在数量多的后面画“○”。
（2）在数量少的后面画“△”。
3. 看k àn图t ú圈qu ān 数sh ù字z ì。
（25分）4. 画hu à一yi画hu à。
（10分）（1）画□和☆同样多。
（2）画，比少。
☆☆☆☆☆☆_____________________________ _____________________________5. 数sh ǔ一yi数sh ǔ，每m ěi 种zh ǒn ɡ 事sh ì 物w ù的de数sh ù 量li àn ɡ 是sh ì几j ǐ，就ji ù在z ài 下xi à 面mi àn 画hu à几j ǐ个ɡè“○”。
（24分）【能力练习】6. 国ɡu ó 国ɡu ó 一y ī家ji ā三s ān 口k ǒu 分f ēn得d é 同t ón ɡ 样y àn ɡ 多du ō的de草c ǎo 莓m éi，他t ā们men 都d ōu 吃ch ī了le一y ī些xi ē，剩sh èn ɡ 下xi à的de草c ǎo 莓m éi如r ú下xi à图t ú，谁sh éi 吃ch ī的de草c ǎo 莓m éi 最zu ì 多du ō？在z ài（ ）里l ǐ画hu à“√”。
（11分）国国 爸爸 妈妈（ ） （ ） （ ）参考答案【基础练习】1. 数一数，连一连。
（20分）2. 比一比。
六年级数学周周练(1)
周周练（1）
1、小A 和小B 两人收藏了127 本书，已知A 的书的一半和B 的书的80%合在一起是83 本，那么A 和B 各有多少本书？
2、在一次选举中，有甲乙丙三位候选人，乙的选票比甲的2 倍还有5 张，丙的选票比甲的一半还少4 张，如果他们三人一共有36 张，请问：甲有多少张选票？
3、小红和小明有榴莲和芒果共60 个，一天，有一半的榴莲被小明吃了，小红则吃了五分之四的芒果，一共还剩下15 个水果，请问其中榴莲多少个？
4、甲乙两包糖的重量之比是5：3，如果从甲中取出10g 放入乙中，甲乙两包糖的重量之比变为7：5，请问，这两包糖的总和是多少克？
5、圆珠笔和铅笔的单价之比是4:3，小张买了20 支圆珠笔和21 支铅笔共用71.5 元，请问：圆珠笔的单价是多少元？。
初一上周练1
初一（上）数学周练1班级______姓名__________号数________成绩______一、 选择题 1. 下列数227，–3.17， 15℅，0.7中，正有理数的个数是（ ） A ．2 B ．3 C ．4 D ．52．在下图中，表示数轴正确的是………………（ ）3．下列各组数中，互为相反数的是………（ ）A ．－(－6)和－6B ．－17和0.7C ．13和－0.3D ．－14和4 4．下列各数中是负数的是………………（ ）A. -（-4）B.-0C.+【-（-3）】D. -【-（-1）】 5． 若实数a 、b 互为相反数，则下列恒等式中正确的是（ ） A.a-b=0 B.a+b=0 C.ab=1 D.ab=-1 二、 填空题6．数轴的三要素是指 、 、 ___． 7.如果将中午12：00记作0小时，下午5：00记作+ 5小时，那么上午5：00可记作 ______小时．8．观察下列各组数，请找出他们的排列规律，并写出后面的2个数 (1)-2,0,2,4,____________,___________ …(2)1，54433221，，，--,________,___________ … 9．（2009年贵阳）点A 在数轴上距原点为3个单位，且位于原点左侧，若将A 向右移动4个单位，再向左移动1个单位，这时A 点表示的数是_________________．10．在数轴上，互为相反数的两个数表示的点之间的距离为4.8，则这两个数分别为 ． 三、 解答题11．将下列各数填入相应的大括号内. -13.5，，5，0，3.14，+27，-54，-15℅，722. 正 数{ …} 正整数{ …} 负分数{ …} 非负整数{ …} 12．（1）在数轴上表示出下列各有理数：-2，-312，0，3，12； （2）指出图所示的数轴上A 、B 、C 、D 、E 各点分别表示的有理数．13．某商店购进标重为100千克的袋装大米10袋，店主过秤时记录各袋重量如下：+2，+3，0，-1，+1，-0.5，+1，-0.5，+1，-1.5，问这10袋大米实际各重多少千克？总重量为多少千克？14．已知4a-6与-6是相反数，求a 的值。
高考文言文周周练一(1——4)参考答案
高考文言文周周练一参考答案一、13．(1)铁马秋风大散关(2)鱼翔浅底，万类霜天竞自由(3)年年知为谁生(4)长风破浪会有时(5)君子成人之美(6)失道者寡助(7)匹夫有责(任选5空，句中有错别字或缺漏，则该句不得分。
共5分。
)二、14．《阿房宫赋》(1分) 15．雄伟奢华；寂寥清冷。
(意思正确即可，2分。
) 16．杜牧的作品重在隐射唐朝统治者穷奢极欲的生活，而崔橹的诗则表现出一种对世事沧桑、物是人非的感慨。
(4分，意思完整正确，语言通顺即给满分。
) 。
三、17．(1)遵循，遵从(2)得……的病(3)就(4)大概(每个解释1分，共4分。
) 18．心胃痛。
(2分)19．(1)原来以行医为业，买卖药材。
(3分，译出大意给1分，评分要点：故、业、货。
)(2)又不去追究到底是虚症还是实症，这样的(医生)不妨害病人的性命(的情形)是不多的。
(3分，译出大意给分，评分要点：求、几何、误。
)20．没有弄清病因，胡乱用药。
(2分)21．例子恰当1分，分析正确2分，共3分。
参考译文：心胃疼痛这个症状，在《黄帝内经》中条目很多，前辈名医们，总共把它归纳为九种病的症状，非常的详细。
现在我借鉴并遵从古人们的那些著作，编成了虚实分明的口诀，可以说没有什么遗漏掉的内容。
我记得邻村有个叫王维藩的医生，是我同宗的弟弟秀才王丹文的表叔，以前行医卖药的时候，邻居有个妇女胃痛请王维藩来治，王维藩用海上方里记载的失笑散，那妇女吃了以后就见效了。
往后只要有心胃疼痛的人，王维藩都是用失笑散给他们治疗，有效无效的各占一半。
王维藩素常吸洋烟，有一天感到自己胃痛，也自己拿出失笑散来吃，痛得更加厉害了，到半夜里胃痛得好像要裂开一样，痛得他敲打枕头床铺，天没亮就静静地死去了。
我根据失笑散是驱淤血的药物来分析，王维藩的女邻居一定是因为淤血化不开引起的胃痛，所以吃了失笑散就见效。
除了淤血以外，伤风感冒中暑、吃喝时造成的胃气凝聚，都能导致胃痛，如果全部胃痛的都用失笑散来治疗，而不探求胃痛的真正原因，怎么能不伤害别人的性命呢？王维藩用失笑散给人治胃痛不知导致了多少人死亡，所以他自己也死在失笑散这味药上，可以说是冥冥之中的报应了。
周周练(1)
塘栖一小语文六年级第二学期周周练（1）第一部分：写好字第二部分：读好书阅读书目：《》页码：（）①摘抄：赏析：②摘抄：赏析：第三部分：练好题（一）小古文鷧鸟中计人有鱼池，昔群鷧窃啄食之，乃束草为人：披蓑戴笠持竿，植之池中以慑之。
群鷧初回翔不敢即下，已渐审视，下啄；久之，时飞止笠上，恬不为惊。
人有见者，窃去刍人，自披蓑戴笠而立池中。
鷧仍下啄、飞止入故。
人随手执其足，鷧不能脱，奋翼声“假假”。
人曰：“先故假，今亦假耶？”（选自《权子·假人》）【注释】①黄（yì）∶即鸬鹚，俗称鱼鹰、水老鸦，喜欢吃鱼，善于潜水捕鱼。
②刍（chú）人∶草人。
③假∶象声词。
★1.解释这句话的意思。
先故假，今亦假耶？★2.填空∶鱼池主人"束草为人"的目的是（用原文语句回答）。
★★3.选择正确的一项。
（1）“已渐审视，下啄”中的“下啄”的意思正确的是哪—项?A.往下面啄食B.一下一下啄食C.在下面啄食D.飞下来啄食（2）对文中画线句翻译正确的是哪一项?A.过了很久，（鸬鹚）有时会飞翔或停止在竹竿上，安然不被草人惊吓了。
B.过了很久，（鸬鹚）就经常飞到竹竿上面停着，安然不被草人惊吓了。
C.过了很久，（鸬鹚）有时会飞翔或停止在竹竿上，安然不产生惊异的样子了。
D.过了很久，（鸬鹚）就经常飞到竹竿上面停着，安然不产生惊异的样子了。
★★★4.本文借鸬鹚讽刺了哪一种人?哪个成语也是讽刺这类人的?（二）现代文火把节之歌这是一个火的民族，它的历史就是一条火的长河。
一年一度最隆重的节日──火把节，实际上是彝（yí）家古老的祭火节。
在四川凉山彝族群众心目中，火是圣物，它能够净化一切。
年节祭品要一一在火上转三圈，或将一块石头烧过，经淬（cuì）水冒出蒸汽，再将祭品在上面绕三圈以除掉一切污浊。
他们视火为神物，视锅庄、火塘为神之所在，严禁人畜践踏与跨越。
猎人、牧人常用的引火绳，在家要挂在屋壁上方，用后只能用手压灭，不许用唾沫淹灭。