2012.9.16限时训练
2012中考完形填空考前45分钟限时集训(3)
2012中考完形填空考前45分钟限时集训（第3课时）ADo you know Eskimos (爱斯基摩人)? Let me tell you something about their 1 .The Eskimos live near the North Pole (北极). There are only two 2 there, winter and summer, There are no spring 3 autumn there. The winter nights are 4 . You can't 5 the sun for more than two months, even at noon. The summer days are long. For more than two months, the sun never 6 and there is no night.The Eskimos have 7 clothes. They make their clothes from the skin of animals. From these skins they make coats, caps and 8 .Near the North Pole trees can't grow, for it is too 9 there. The Eskimos 10 make their houses from skins, snow or stones (石头). When they 11 in storm and can't 12 home, they make house of snow. They 13 these snow houses when the storm is 14 .Life is 15 for the Eskimos, but they still like to live there.1. A. work B. life C. holiday D. families2. A. weather B. seasons C. months D. years3. A. not B. or C. and D. as4. A. short B. warm C. long D. cold5. A. see B. watch C. look D. look at6. A. rises B. goes up C. drops D. goes down7. A. beautiful B. metal C. warm D. cool8. A. goods B. drinks C. medicine D. shoes9. A. cold B. hot C. dry D. wet10. A. will B. should C. never D. have to11. A. go out B. go over C. keep on D. get on12. A. get back B. got off C. get on D. get in13. A. make B. leave C. stay D. break14. A. over B. coming C. going D. hard15. A. easy B. interesting C. hard D. luckyBLife in the twenty-first century will be very 1 . Many changes will take place, but 2 will the changes be.The population is growing 3 . There will be many 4 in the world and most of them will live 5 than people in the twentieth century.Computers will be much smaller and 6 and there will be at least one in every 7 . And 8 studies will be one of the important subjects in school then.People will work 9 and they will have more free time for sports, watching TV and travelling. 10 will be much easier and cheaper. And many more people will go to 11 countries for holidays.There will be changes in our 12 , too. Maybe no one will eat meat every day, instead,they eat more fruit and vegetables. Maybe people will be 13 . Work in the future will be different, too. 14 and hard work can be done by robots. Because of this, 15 will not have enough work to do .This will be a problem.1. A. interesting B. hard C. different D. beautiful2. A. why B. how C. when D. what3. A. slowly B. fast C. quietly D. suddenly4. A. people B. workers C. scientists D. doctors5. A. long B. longer C. happy D. lucky6. A. more useful B. useful C. helpful D. less useful7. A. hospital B. factory C. home D. town8. A. science B. maths C. English D. computer9. A. fewer hours B. more hoursC. eight hoursD. more than eight hours10. A. Seeing doctors B. Going to the cinemaC. ShoppingD. Travelling11. A. rich B. other C. poor D. small12. A. food B. clothes C. fruit D. drinks13. A. fatter B. thinner C .healthier D. more pleased14. A. Safe B. Easy C. Simple D. Dangerous15. A. a few people B. all the peopleC. many peopleD. some peopleCMany people go to school for an education. 1 learn languages, history, geography, physics, chemistry and maths. Others go to school to learn a skill so that they can 2 a living. School 3 is very important and useful. Yet no one can learn everything from school. A teacher, no matter how much he 4 , can not teach his students everything they 5 to know. The teacher's job is to show his students how to read and how to 6 . So much more is to be learned 7 school by the students themselves.It is always more important to know how to study by 8 than to memorize(熟记)some facts or formula(公式). It is 9 quite easy to learn a 10 fact in history or a formula in mathematics. But it is very difficult to use a formula in 11 out a maths problem. Great scientists, such as Einstein, Newton and Galileo, didn't learn many things from school. But they were all so 12 that they invented so many things for mankind.The 13 for their success is that they knew how to study. They read books that were not 14 at school. They worked hard all their lives, wasting not a single moment. They would ask many questions as they read and they did thousandsof 15 .1. A. Students B. They C. We D. People2. A. make B. do C. have D. get3. A. education B. degree C. lesson D. task4. A. teaches B. knows C. learns D. practises5. A. manage B. expect C. fail D. want6. A. study B. play C. think D. work7. A. From B. in C. within D. outside8. A. heart B. students C. us D. oneself9. A. not B. actually C. seldom D. known10.A. real B. true C. certain D. great11. A. setting B. working C. making D. doing12. A. famous B. popular C. successful D. modest13. A. experiment B. reason C. result D. way14. A. kept B. showed C. expressed D. taught15. A. duties B. jobs C. experiments D. recordsDAbout 70,000,000 Americans are trying to lose weight(减肥). That is almost 1 out of every 3 people in the United States. Some people eat 1 food and they hardly have any fats or sweets. Others do running, exercise with machines, take medicines, or even have operations. 2 you can see losing weight is 3 work, and it will also cost a lot of money. But __4 do so many people in the United States want to lose weight?Many people in the United States worry about their look of the body. For many people, looking nice also means to be 5 . Other people worry about their health as many doctors 6 overweight is not good.Most people want to find an 7 way to take off fat, and books of this kind are very popular. These books tell people how to lose weight. Each year a lot of new books like these are 8 . Each one says it can easily help people take fat away.Losing weight can be 9 . Some overweight people go to health centres, like La Costa in California. Men and women 10 several hundred dollars a day at these health centres. People live there for one week or two, 11 exercise, eating different foods. Meals there may be just a little. All these work for losing weight. __12__ 4 days on the programme, one woman called Mrs. Warren lost 5 pounds (2.27kg). At $ 400 a day, she spent $ 320 to lose each pound. But she said she was still __13__ to do so.Health centres, books, medicines, operations, running and exercise machines all __14__ a lot of money. So in the United States, losing weight may mean losing __15__ too.1. A. less B. more C. nice D. fast2. A. For B. So C. Or D. And3. A. good B. useful C. hard D. easy4. A. why B. what C. how D. when5. A. high B. short C. thin D. fat6. A. talk B. say C. speak D. tell7. A. dearer B. harder C. shorter D. easier8. A. taken B. given C. written D. copied9. A. cheap B. expensive C. easy D. safe10. A. pay B. cost C. take D. have11. A. making B. taking C. playing D. using12. A. Before B. In C. After D. At13. A. sorry B. angry C. sad D. glad14. A. need B. have C. use D. get15. A. health B. time C. food D. money答案：A文章导读本文介绍了爱斯基摩人的生活情况：爱斯基摩人的特殊生活习惯缘于那儿的特殊气候。
青铜峡市高级中学2012届高三生物限时训练
青铜峡市高级中学2012届高三生物限时训练青铜峡市高级中学2012届高三生物限时训练（4）1．将大肠杆菌在含有15N标记的培养液中培养后，再转移到含有14N的普通培养液中培养，8小时后提取DNA进行分析，得出含15N的DNA占总DNA 的比例为1/16，则大肠杆菌的分裂周期是（）A．1.6小时B．4小时C．2小时D．1小时2．光照下，将等细胞数量的衣藻和大肠杆菌分别接种到只含无机盐的培养液中，光照下培养，结果是（虚线和实线分别表示大肠杆菌和衣藻的生长曲线）（）3．下图表示以新鲜洋葱鳞茎叶外表皮为材料进行的相关实验，时间1表示用a、b、c、d四种溶液分别处理洋葱表皮一段时间后再用清水（时间2）多次处理洋葱表皮，显微镜下观察并测得该细胞原生质体体积变化曲线，则a、b、c、d四种溶液分别是（）A．清水、0.3g/mL蔗糖溶液、0.3g/mL尿素溶液、0.5g/mL蔗糖溶液B．清水、0.3g/mL尿素溶液、0.3g/mL蔗糖溶液、0.5g/mL蔗糖溶液C．清水、0.5g/mL蔗糖溶液、0.3g/mL蔗糖溶液、0.3g/mL尿素溶液D．清水、0.3g/mL蔗糖溶液、0.5g/mL蔗糖溶液、0.3g/mL尿素溶液4．对下列各图所表示的生物学意义的描述，正确的是（）A．甲图的生物自交后产生基因型为Aadd个体的概率为1／6B．乙图细胞一定是处于有丝分裂后期，该生物正常体细胞的染色体数为8条C．丙图家系中男性患者明显多于女性患者，该病最有可能是伴X隐性遗传病D．丁图表示某果蝇染色体组成，其配子基因型有AX w、aX w、AY、aY四种5．玉米是雌雄同株、异花受粉植物，可以接受本植株的花粉，也能接受其他植株的花粉。
在一块农田间行种植等数量基因型为Aa和aa的玉米（A和a 分别控制显性性状和隐性性状，且AA、Aa表现型相同），假定每株玉米结的子粒数目相同，收获的玉米种下去，具有A表现型和a表现型的玉米比例应接近（）A．1∶4 B．5∶11 C．1∶2 D．7∶96．人体内环境稳态的调节能力是有一定限度的。
九年级英语限时训练(附参考答案)
九年级英语限时训练（附参考答案）（满分35分时间25分钟）一、单词拼写（共5小题；每小题2分，满分10分）根据句意和首字母或汉语提示，将单词的正确形式完整地写在答题纸相应的位置上。
1. If it rains tomorrow, you could go to the museum i___________.2. Do you know who is the g___________ writer since Shakespeare in the English language?3. How much time do you spend ___________（练习）English every day?4. Could you tell me where I can c___________ a bus going downtown?5. If possible, a___________（避免）stopping under trees, light posts, or power lines.二、完形填空（共10小题；每小题1分，满分10分）阅读下面短文，掌握其大意，然后从每题所给的A、B、C、D四个选项中，选出能填入短文相应空白处的最佳选项，并在答题卡上将该项涂黑。
Many people have to work at the weekends．Some people do not mind．Other people think it’s 6 ．One man thinks that working at the weekends can be 7 ．He is George Smith．Mr．Smith works in an office, in Brighton, England．One Saturday, May 24, 1996, he went to the office to do some work．After he 8 the lift, it stopped between floors．Mr．Smith could not get out of the lift．He began to shout, but 9 heard him．Then Mr．Smith remembered that it was a holiday in England．No one was going to come to work 10 Tuesday．There was 11 for Mr．Smith to do．He had to wait until one of his workmates came to work and found him．With nothing do 12 , Mr．Smith was very hungry and had to sleep most of the time．Early on Tuesday morning, one of his workmates came to work and found the lift was not 13 ．When the lift was opened, Mr．Smith came out, cold, weak, and tired．He had been in the lift for 14 hours!Now Mr．Smith says, “I only use lifts if they have 15 in them．”6. A.glad B.terrible C.good eful7. A.dangerous B.happy C.angry D.free8. A.got off B.got into C.got out of D.got to9. A.someone B.everyone C.no one D.either10. A.on B.to C.from D.until11. A.nothing B.something C.anything D.everything12. A.read or write B.eat or drink C.cook D.know the time13. A.there B.closed C.working D.here14. A.nearly 24 B.abut 40 C.more than 60 D.over 9415.A.pans B.beds C.exits D.telephones三、阅读表达共6小题；71-73小题，每小题2分；74-76小题，每小题3分，满分15分）阅读下面的短文，并根据短文后的要求答题。
九年级英语限时训练(附参考答案)
九年级英语限时训练（附参考答案）（满分55分 时间45分钟）一、听力(共5小题;1—5小题每题2分,满分10分)听短文,填表格。
根据短文内容,写出下面表格中所缺信息,每空一词。
短文读三遍。
你将有20秒钟的时间阅读表格内容。
答题完毕后,请将答案填写在答题卡的相应位置。
二、单词拼写（共10小题；每小题2分，满分20分）根据句意和首字母或汉语提示，将单词的正确形式完整地写在答题纸相应的位置上。
6．I drank a cup of coffee before going to bed, which kept me a________ almost all night.7．Though the player was very tired, he still kept running t________ the finishing line.8．A c________ is a kind of machine used for taking photos.9．Thank you for i________me to your birthday party.10．Every autumn, the f________ leaves make our school more beautiful.11．Have you got the ________ (最新的) news about the drinking and driving in Beijing?12．________ (幸运的是),Fred was not hurt in the car accident.13．The fisherman made a fire and ________ (悬挂) his wet clothes up to dry.14．I hope to go ________ (国外) for further education after I graduate from college.15．Betty has a beautiful ________（声音）. She wants to be a singer in the future三、 写作(共1题,满分25分)今年春节，很多人加入了抢红包游戏活动，但也有人表示担忧。
限时训练参考答案
限时训练参考答案限时训练参考答案在现代社会中，时间成为了一种宝贵的资源。
我们总是不断地追求高效率和快速完成任务的能力。
为了应对这种需求，限时训练应运而生。
限时训练是一种通过在规定的时间内完成任务来提高工作效率和学习能力的方法。
在这篇文章中，我们将探讨限时训练的意义和一些参考答案。
限时训练的意义在于它可以帮助我们培养时间管理和压力应对能力。
在限时训练中，我们必须在规定的时间内完成任务，这迫使我们学会合理安排时间和高效利用时间。
这种训练不仅可以提高我们的工作效率，还可以培养我们的冷静和应对压力的能力。
当我们在紧迫的时间限制下工作时，我们需要保持冷静并集中注意力，这对我们的工作和学习都非常重要。
在进行限时训练时，我们需要有一些参考答案来帮助我们评估自己的表现。
这些参考答案可以是标准答案、模板或者是其他人的答案。
通过参考答案，我们可以了解到自己在时间管理、任务完成和问题解决等方面的表现如何。
同时，参考答案也可以帮助我们发现自己的不足之处，并进行针对性的改进。
然而，我们需要明确的是，参考答案只是一种参考，我们并不需要完全照搬，而是应该根据自己的实际情况进行调整和改进。
在限时训练中，我们可以运用参考答案的方法和思路，但是我们需要注意避免机械地套用答案。
每个人都有自己的思维方式和解决问题的方法，因此我们需要根据自己的特点和优势来进行答题。
参考答案只是给我们提供一种思路和方法的参考，而不是唯一的正确答案。
我们需要根据自己的理解和思考来进行创新和发展。
限时训练不仅可以应用于学习和工作，也可以应用于日常生活中的各个方面。
比如，我们可以设定一个时间限制来完成家务，这样不仅可以提高效率，还可以让我们有更多的时间去做其他喜欢的事情。
又比如，我们可以设定一个时间限制来锻炼身体，这样不仅可以提高身体素质，还可以节约时间。
限时训练可以应用于各个领域，它可以帮助我们更好地管理时间，提高效率。
综上所述，限时训练是一种提高工作效率和学习能力的方法。
限时训练(三)
限时训练(三)Ⅰ.完形填空Amber Mozo is a young photographer. She often travels around the world, taking photos and telling stories through them.Amber __1__ her love for photography when she was just 11 years old. The year before, her __2__，famous surf photographer Jon Mozo, __3__ when he was taking photos at Backdoor Pipeline, Hawaii.“I remember just waiting to use his __4__，〞Amber said. Her uncles told her not to touch her father's equipment, __5__ her mother said it was OK. So Amber __6__ the camera and hasn't stopped taking photos since.“I was 11, walking around with his huge camera, and that's when I __7__ fell in love with photography.〞Now, Amber has traveled around the world with her father's camera and taken __8__ photos.“Although my dad is gone, I feel like I'm connected with him __9__ that camera，〞she said. Now Amber is raising money to produce her first __10__ of photos, Chasing Light Around the World.“The experiences that changed me could __11__ change or help someone else，〞Amber said of her travels.“That's really what I think is __12__ about photography.〞“In all things she does she tries to __13__ her dad，〞Amber's mom said.“Jon started making a photo book and didn't finish it, so I think it can be very satisfying for __14__ to finish that task. It makes our loss seem a little less __15__，because nothing really dies when you pass it on to others.〞() B．sharedC．continued D．discovered() B．fatherC．brother D．cousin() B．failedC．regretted D．changed() B．nameC．camera D．money() B．butC．or D．because() up B．picked upC．got up D．turned up() B．mostlyC．really D．nearly() little B．fewC．a lot of D．much() B．onC．from D．through() B．newspaperC．book D．diary() B．justC．only D．never() B．boringC．funny D．hard() B．honorC．treat D．protect() B．meC．them D．you() B．helpfulC．painful D．harmfulⅡ.语法填空阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式(每空不多于3个单词)。
湖北省2012年高考生物限时训练(14)
生物限时训练（十四）1. 下列叙述中,正确的是A. 低倍物镜换成高倍物镜后，视野变亮B. 健那绿可使线粒体呈现蓝绿色且能维持活性数小时C. 在提取和分离绿叶中色素的实验中，提取和分离色素的原理是完全相同的D. 调查土壤中小动物类群丰富度的最有效方法是标志重捕法2. 细胞内很多化学反应是在生物膜上进行的。
如图①〜④为真核细胞中4种生物膜上发生的化学变化示意图，相关叙述不正确的是A.①可能与抗体的加工有关B.①②③④都具有流动性C.③是叶绿体内膜D.④是线粒体内膜3. 下列有关正常二倍体果蝇体内细胞分裂的叙述，正确的是A. 在有丝分裂间期，核膜解体、核仁消失B. 处于有丝分裂后期的细胞中含有两个染色体组C. 在减数第一次分裂的前期和后期均可能发生基因重组D. 正常情况下，次级精母细胞中形态大小相同的染色体是同源染色体4. 假说-演绎法是现代科学研究中常用的一种科学方法，其基本思路是：发现问题→提出假说→演绎推理→实验检验→得出结论。
下列属于孟德尔在发现基因分离定律时的“演绎推理”内容的是A. 若遗传因子位于染色体上，则遗传因子在体细胞中成对存在B. 若F1产生配子时成对遗传因子分离,则测交后代会出现接近1:1的两种性状比C. 若F1产生配子时成对遗传因子分离,则F2中三种基因型个体比接近1:2:1D. 由F2出现了“3:1”的表现型比,推测生物体产生配子时，成对遗传因子彼此分离5. 如果某个可表达的基因的中部替换了一个碱基对，不可能的后果是A.无法形成翻译产物B.翻译症替换位置终止C.翻译的蛋白质相对分子质量减小D.翻译的蛋白质完全正常6. 下表记录的是人体组织液和血浆的物质组成和含量的测定数据。
相关叙述正确的是A. ①属于组织液，②属于血浆B. ①中的蛋白质含量减少将导致②的总量减少C. CO2在①中的浓度大于在②中的浓度D. ②与①的成分存在差异的主要原因是毛细血管壁上的细胞膜具有选择透过性29. (5分)科学研究小组设计了如下实验来证实DNA的转录过程需要消耗能量（ATP),请你补充完善。
限时训练(3)合稿
限时训练（一）（一）奇遇莫言1982年秋天，我从保定府回高密东北乡探亲。
因为火车晚点，车抵高密站时，已是晚上九点多钟。
通乡镇的汽车每天只开一班，要到早晨六点。
举头看天，见半块月亮高悬，天清气爽，我便决定不在县城住宿，乘着明月早还家，一可早见父母，二可呼吸田野里的新鲜空气。
这次探家我只提一个小包。
所以走得很快。
穿过铁路桥洞后，我没走柏油路。
因为柏油公路拐直角。
要远好多。
我斜刺里走上那条废弃数年的斜插到高密东北乡去的土路。
土路因为近年来有些地方被挖断了。
行人稀少，所以路面上杂草丛生，只是在路中心还有一线被人踩过痕迹。
路两边全是庄稼地，有高粱地、玉米地、红薯地等，月光照在庄稼的枝叶上，闪烁着微弱的银光。
几乎没有风，所有的叶子都纹丝不动，草蝈蝈的叫声从庄稼地里传来，非常响亮，好像这叫声渗进了我的肉里、骨头里，蝈蝈的叫声使月夜显得特别沉寂。
路越往前延伸庄稼越茂密，县城的灯光早就看不见了。
县城离高密东北乡有40多里路呢。
除了蝈蝈的叫声之外，庄稼地里偶尔也有鸟或什么小动物的叫声。
我忽然感觉到脖颈后有些凉森森的，听到自己的脚步声特别响亮与沉重起来。
我有些后悔不该单身走夜路，与此同时，我感觉到路两边的庄稼地里有无数秘密，有无数只眼睛在监视着我，并且感觉到背后有什么东西尾随着我，月光也突然朦胧起来。
我的脚步不知不觉地加快了。
越走得快越感到背后不安全。
终于，我下意识地回过头去。
我的身后当然什么也没有。
继续往前走吧。
一边走一边骂自己：你是解放军军官吗?你是共产党员吗?你是马列主义教员吗?你是，你是一个唯物主义者，而彻底的唯物主义者是无所畏惧的，共产党员死都不怕还怕什么?有鬼吗?有邪吗?没有!有野兽吗?没有!世界本无事，庸人自扰之……但依然浑身紧张、牙齿打战，儿时在家乡时听说过的鬼故事“连篇累牍”地涌进脑海：一个人走在路上，突然听到前边有货郎挑子的嘎吱声，细细一看，只见到两个货挑子和两条腿在移动，上身没有……一个人走夜路碰到一个人对他嘿嘿笑，仔细一看，是个女人，这女人脸上只有一张红嘴，除了嘴之外什么都没有，这是“光面”鬼……一个人走夜路忽然看到一个白胡子老头在吃青草……我后来才知道我的冷汗一直流着，把衣服都溻湿了。
2012年高考考前30天三轮专题提分必练绝密之三十
专题限时训练(三十)(一)Every spring scores of people flock to the Buzzard Festival at Hinckley，Ohio. They come to watch for buzzards. Most would be glad just to take a look at a buzzard. If they do see one of these “flying garbage cans”，it will probably be circling high in the sky. From there it can watch the ground for signs of the waste and the dead animals on which it feeds.The buzzard is the ugliest bird in the United States. In fact，it may well be the ugliest bird in the world. It has a small，bare，pink head. Its thick body is covered with dark，rough feathers.In spite of its looks，the buzzard is important to the people of Hinckley. It is their first sign of spring. After a winter in the south，buzzards return to their homes in the north. In the Hinckley area，they always return on March 15. No one knows why. But they have come back to Hinckley Ridge on that day，sure as clocks work，for at least forty years.The excitement starts in February. By the middle of March it has reached a high peak. Bets are placed. Prizes go to the person who sees the first buzzard. Radio stations and newspapers tell of the coming festival. And on the weekend after March 15 the people of Hinckley hold their Buzzard Festival.The people come and look around. They chat. They eat their pancakes and sausages. Then they drive past Buzzard’s Roost on Hinckley Ridge.A lot of them stop near the road at the stand set up to give information to visitors. There they can hear，from a recording，the main facts about the buzzard. They can see a stuffed buzzard. They can look at some pictures taken of buzzards in other years. With good luck and a strong pair of field glasses，they may sight one or two live buzzards high in the sky.Buzzards may be ugly. They may be “flying garbage cans”. But in Hinckley they are just as welcome as the swallows are in Capistrano in California. It would be a sad spring indeed if the buzzards ever failed to come back to Hinckley Ridge.()1. A good title for this story would be ________.A．The hinckley buzzard festivalB．Buzzard，the ugliest birdC．Why the buzzard has a pink headD．The return of “the garbage can”()2. The buzzard is called the “flying garbage can” because it ________.A．is uglyB．eats waste and dead animalsC．looks like a garbage canD．collect rubbish on the ground()3. The surprising thing about Hinckley’s buzzards is that ________.A．they spend the winter in the southB．they come very close to the townC．they return on the same day each yearD．both buzzards and swallows return to Capistrano on March 15()4. At the information stand，visitors to Hinckley’s Buzzard Festival can ________.A．learn some facts about the buzzardB．easily see a live buzzardC．take some pictures with the background of live buzzardsD．feed their pancakes and sausages to buzzards(二)What can help you make a fortune in the future? Graduating from a top university might not be enough. A new study from the University of Essex in Britain has shown that the more friends you have in school，the more money you’ll earn later.The idea that popularity could have a serious impact on one’s earning potential shouldn’t comeas too much of a surprise. The researchers noted that if you want to get ahead in life，social skills and networking are easily as powerful as talent and hard work.“If a person has lots of friends，it means that he or she has the ability to get along with others in all kinds of different situations，” said Xu Yanchun,17，from Nantou High School in Shenzhen，who totally agreed with the recent finding. “Also，friends always help each other. They not only create wider social circles for you but lift your mood when you occasionally feel depressed，” said Xu. She believed that all this helps you “earn a higher salary”．Maybe that’s why some people think the younger generations are in the age of Friendalholism (交友狂症). A woman even complained that the networking website Facebook’s 5,000-friend limit was too low for her large reserve of social contacts.But what does a friend mean? Should friends be regarded as a form of currency?“Call me uncool，but I think of a friend as an actual person with whom I have an actual history and whom I enjoy actually seeing. It seems，however，that this is no longer the definition (定义) of ‘friend’，” said Meghan Daum，who works with The Los Angeles Times in the US.()1. The new study from the University of Essex in Britain shows that ________.A．if you have more friends you will not live happilyB．the more friends you have in school，the more money you’ll earn in your late lifeC．the less friends you have，the poorer lives you will liveD．friends can make more money for you()2. According to Xu Yanchun，when you have lots of friends，it means________A．you have the ability to earn more moneyB．you will not feel lonelyC．you are quite content with your lifeD．you have the ability to get along with others in various situations()3. What’s the main idea of the passage ?A．The passage mainly tells us something about the friendship.B．Friendship plays a more important part in our daily life than anything else.C．Friends are currency.D．Friends give you success.()4. We can learn from the passage that ________.A．if you have more friends，you can make a fortune in the futureB．graduating from college means that you can make a fortune in the futureC．friends mean a form of currencyD．friends can make you a wider social circle and make you feel better when you feel depressed(三)Violin prodigies(神童)，I learned，have come in distinct waves from distinct regions. Most of the great performers of the late 19th and early 20th centuries were born and brought up in Russia and Eastern Europe. I asked Isaac Stern，one of the world’s greatest violinists，the reason for this phenomenon. “It’s very clear，”he told me. “ They were all Jews and Jews at the time were severely oppressed and ill-treated in that part of the world. They were not allowed into the professional fields，but they were allowed to achieve excellence on a concert stage.” As a result，every Jewish parent’s dream was to have a child in the music school because it was a passport to the West.Another element in the emergence of prodigies，I found，is a society that values excellence in a certain field and is able to nurture(培育) talent. Nowadays the most nurturing societies seem to be in the Far East. “ In Japan，a most competitive society with stronger discipline than ours，” says Isaac Stern，“ Children are ready to test their limits every day in many fields，including music. When western music came to Japan after World War II，that music not only became part of their daily lives，but it became a discipline as well.” The Koreans and Chinese，as we know，are just as highly motivated as the Japanese.That’s a good thing，because even prodigies must work hard. Next to hard work，biologicalinheritance plays an important role in the making of a prodigy. J. S. Bach，for example，was the top of several generations of musicians，and four of his sons had significant careers in music.()1. Jewish parents in Eastern Europe longed for their children to attend music school because ________.A．it would allow them access to a better life in the WestB．Jewish children are born with excellent musical talentC．they wanted their children to enter into the professional fieldsD．it would enable the family to get better treatment in their own country()2. Nurturing societies as mentioned in the passage refer to societies that________.A．enforce strong discipline on students who want to achieve excellence B．treasure talent and provide opportunities for its full developmentC．encourage people to compete with each otherD．promise talented children high positions()3. Japan is described in the passage as a country that attaches importance to________.A．all-rounded developmentB．the learning of western musicC．strict training of childrenD．variety in academic studies()4. Which of the following contributes to the emergence of musical prodigies according to the passage?A．A natural gift.B．Extensive knowledge of music.C．Very early training.D．A prejudice-free society.专题限时训练(三十)(一)1. A主旨大意题。
限时训练(一)
I.Translations1.进化论_______________________________________________2.在…取得重大突破_______________________________________________3.分发物资给一线医护人员________________________________________________4.少部分人________________________________________________5.对…有益________________________________________________6.随着数字科技的发展________________________________________________7.别无选择只有做某事_______________________________________________8.新型冠状肺炎的爆发________________________________________________9.由…组成/构成________________________________________________10.推迟做某事________________________________________________ II. Fill in the blanks11. The wise leader has f__________ the outbreak of the NCP in advance and taken effectivemeasures to battle it.12. The government took a lot of financial resources to design and c______________ twoemergency hospitals immediately in Wuhan to adopt the patients in critical condition.13.In theory, a computer chip has two main _______________(部件): a processor and a memorycircuit.14.We assure you, if you work hard, you will e_____________ be able to make great progresseven though we are in such a special period.15.The film Lost in Russia was based on an ______________(改编本) of a famous novel.16.Chairman Xi still worries that domestic production, though rising, could not ______________ _______ the demand of people in the NCP infected area due to the traffic problems.17.Every little bit of exercise helps _________ _________ good body’s immune system.18.Apple is losing ground as a leader in the field of mobile phones with Huawei _________( speed ) up its development.19.It is ______ _______ you _______ decide whether to draw all the money in the bank or not.20. ______ ________ not until 1938_______ the first colour TV programme was broadcast.===Not until 1938, _______ the first colour TV programme______________.III. ClozeHave you ever been accused of overprotecting your young children? In some cultures, that’s a 21 . All of nature proves that protecting children is why God made parents.We cannot protect our young children enough. But in fact we cannot overprotect children’swhole lives. The trick is to have your children 22 of protecting their own selves by the time they become 23 . To do this, always protect your children, but don’t try to24 them from the world as they grow older.To be more specific, when children are five, they should live in a 25 . They do not need to know all of the world’s26 since they cannot solve them anyway. Rather, little children should be 27 the wonders of God’s world; things like the magic and the beauty of a butterfly. Then, 28 , as your teenagers mature into an adult, address all the 29 issues that he will need to know 30he may protect himself when the time comes. At the same time, slowly make him 31 the responsibility for protecting himself as he shows himself worthy of trust.Whether or not you help your kids to 32 the world, they are going to be 33 to it at some point. You can try to 34 that day, but the wiser parents will avoid disaster by 35their child to face temptations.To prepare your children you will need to give them more than vital 36 ; you must also create 37 where they can learn how to exercise control over their own hearts. For instance, I allow my children to hold me accountable for all my words and actions. They also helped us 38 which movies were inappropriate for us, as a family, to watch. Another way to bring your children out of their dream is to 39 yourself in some tasks that they can join. They’ll then be able to see the 40 world first-hand, while still in a protected environment.21. A. mistake B. success C. praise D. blessing22. A. conscious B. proud C. confident D. capable23. A. adults B. teenagers C. students D. parents24. A. benefit B. shelter C. excuse D. transfer25. A. palace B. house C. dream D. background26. A. environments B. problems C. disciplines D. demands27. A. missing B. observing C. exploring D. accepting28. A. gradually B. fortunately C. smoothly D. frankly29. A. strange B. amazing C. boring D. difficult30. A. in case B. in that C. so that D. only if31. A. pick up B. take on C. apply for D. set about32. A. face B. change C. judge D. shape33. A. devoted B. attached C. exposed D. accustomed34. A. bring forward B. hold back C. work out D. put forward35. A. forcing B. requiring C. encouraging D. assigning36. A. knowledge B. experience C. exercise D. practice37. A. assumptions B. achievements C. limitations D. opportunities38. A. command B. decide C. describe D. purchase39. A. involve B. trap C. bury D. enroll40. A. special B. safe C. real D. busyIV.Reading ComprehensionNowadays we feel that we have become dependent on our computers, mobile phones and other media, and that we need these things to think and act creatively. But a recent study seems to indicate that the best thing we might be able to do for our creativity is leave all of these high-tech toys at home and just take a walk in the woods.In the study, David L. Strayer and his fellow researchers worked with 30 men and 26 women who were about to go on a four-day hike, during which they would be taken away from all of the creative toys mentioned above. Before the hike began, Strayer gave the participants a standardized Remote Associates Test, which is often used to test creativity and creative problem-solving abilities. After the hike, they were given the test again. The result showed that there was a 50% improvement in the participants' creative problem-solving abilities, As Strayer says, "This is a great effect."This study is the first to document systematic changes in higher-level cognitive (认知的) function connected with entering nature. The research suggests that effect nature seems to have on improving creative thinking is due to the lack of distractions (分心的事) in the natural environment－there are no ringing phones, noisy computers, etc. Other studies have shown that the color green－the color of much of nature－is felt by the brain as relaxing, and that increased relaxation may be one of the factors that improve creativity.None of this is exactly news. The benefits of nature have been known for centuries. The philosopher and author Henry David Thoreau spoke eloquent (富有表现力的) about the two years he spent in the countryside. The experience certainly seemed to develop his creativity－he went on to write 50 books. Given this recent study, it looks as if his advice in Walden to "simplify, simplify, simplify" is good－if you want to relax your mind and make it become more creative, take a walk in the woods, and leave your cellphone behind.41. Which of the following is TRUE according to the passage?A. High-tech toys are useless for creativity.B. There is much news about nature's effect on human mindC. Strayer's study is the first to deal with nature's effect on creativity.D. Participants were asked not to take their cellphones during the hike.42. Which of the following can encourage creativity according to the study led by Strayer?A. Having a relaxing feeling in nature.B. Learning more knowledge about natureC. The silence in the natural environment.D. The colour of much of nature, esp. green.43. Henry David Thoreau suggested that people ________.A. live a simple lifeB. live in the countrysideC. walk in the woods every dayD. throw away their high-tech toys限时训练（一）答题纸I.Translations1.____________________________________________________________2.____________________________________________________________3.____________________________________________________________4.____________________________________________________________5.____________________________________________________________6.____________________________________________________________7.____________________________________________________________8.____________________________________________________________9.____________________________________________________________10.___________________________________________________________II. Fill in the blanks11.____________12.___________ 13.______________ 14.____________ 15.______________ 16. ______ _______ _______ 17. __________ ________ 18.______________________ 19. _____ _______ ________ 20. _____ _____ ______; _________ ________________ III. Cloze21-25:________________ 26-30:___________________31-35:__________________ 36-40:___________________IV.Reading Comprehension41-43:_________ _________ _________。
九年级英语限时训练(附参考答案)
九年级英语限时训练（附参考答案）（满分28分时间25分钟）一、还原型阅读（共5小题；每小题2分，满分10分）二、阅读理解（共4小题；每小题2分，满分8分）In 1987 a small company named Huawei was started in Shenzhen.After more than 30 years of development, the company has now beaten Apple and become the world's second largest maker of smartphones. It has also become the world's supplier(供应者)of 5G.In China and even in the world.Huawei is a wonder. Although it started producing mobile phones not many years ago,it has become one of the most famous phone companies.But recently,Huawei faces some difficulties. The US government made a law to stop its sales in America. American officials said Huawei gave information that it collected to the Chinese government. At the same time, the US government planned to stop selling parts and services to Huawei. They believed that Huawei's business would be hurt this way.“We have never received such a request from the Chinese government and we have never tried to get into other systems to collect information," Ren Zhengfei, Huawei's president said. "The law would have little effect on our company. Huawei has enough ability to deal with the problems," Ren added.In an interview several years ago,Ren Zhengfei said,“I started Huawei with only £4000 at the beginning,but now it has become a 100 billion company. The experience was not as romantic as you imagine.Facing the law of the US,Huawei is growing. Huawei's smartphone sales around the world rose 50 percent compared with a year earlier in the first three months of2019. At the same time,sales from both Samsung and Apple fell. So far Huawei has grown into the world's largest telecommunication equipment supplier(供应商), selling in 170 countries. It may beat Samsung as the largest smartphone maker in the near future.6. How many kinds of smartphones are mentioned in total in this passage?A. One.B. Two.C. Three.D. Four.7. Which of the following sentences is TRUE according to the passage?A. Huawei collected the information for the Chinese government.B. Ren Zhengfei started Huawei with only L4000 in1987.C. Huawei has beaten Samsung.a South-Korea phone maker so far.D. Huawei has developed its business smoothly.8. What does the underlined word "romantic”in Paragraph 4 mean in Chinese?A.浪漫的B.现实的C.成功的D.麻烦的9. The last paragraph mainly tells us.A. Huawei has become one of the most famous phone companies.B. Huawei has become the largest maker of smart phones in the world.C. Huawei has got into some systems of the US.D. Huawei is full of hope and must succeed in the future .三、阅读表达（共5小题，每小题2分，满分10分）阅读下面的短文，并根据短文后的要求答题。
九年级英语限时训练(附参考答案)
九年级英语限时训练（附参考答案）（满分45分时间35分钟）一、单词拼写（共5小题；每小题2分，满分10分）根据句意和首字母或汉语提示，将单词的正确形式完整地写在答题纸相应的位置上。
1. In the face of danger,all the firefighters were brave and n___________ of them gave up.2.She has r__________ her dream of becoming a doctor.3. The boy entered the room q___________ in order not to wake up his mother.4. Shake the bottle well so that the milk ___________ (混合)with the tea.5.—What are Palu and Bob doing these days?—They are carrying out a ___________ (调查) of afterschool activities.二、综合填空（共10小题；每小题2分，满分20分）Good, better, best. Never let it rest. This is the lesson we learn from Xu Yuanchong, the famous translator （6）6 celebrated his 100th birthday this April. Xu’s mother was interested in literature and 7 . Encouraged by her, Xu began to translate Chinese poetry into both English and French when he was still a teenager. He soon learned the 8 between Chinese and European languages. Only about half of the words in 9 could be translated word-for-word. That is why translators have to be 10 . As a great translator, Xu still works for long hours every day and tries to improve his translations to make sure they are correct and beautiful.In some ways, Professor Xu is 11 the sportsman Liu Xiang. For example, Liu was never satisfied with 12 the fastest 110-meter hurdler in the world. He always trained hard and tried to become faster. Even injuries did not weaken his desire.Both Xu and Liu 13 to be the best, but that hasn’t stopped them from always trying to become better. They are great role models for all of us. Most of you are good at English or some other 14 . A few of you are even the best in your class. But all of you know that you can be better and that, the 15 you learn and the harder you study, the better you will become. There is always room for improvement!三、阅读表达（共6小题；16-18小题，每小题2分；19-21小题，每小题3分，满分15分）阅读下面的短文，并根据短文后的要求答题。
2012高考生物40分钟限时练习7.doc
2012高考生物40分钟限时练习7第Ⅰ卷（选择题共30 分）一．选择题：（每题6分，共30分）1．下列关于甲、乙、丙三幅图说法错误的是（）A．甲图表示温度对绿色植物代谢的影响，光照相同时间，在25℃条件下植物积累的有机物的量最多B．甲图表示温度对绿色植物代谢的影响，温度为20℃时，每天光照10小时，植物不能生长C．若乙图表示种子萌发过程中有关植物激素的变化情况，据图可知赤霉素与细胞分裂素对种子的萌发有促进作用，而脱落酸会抑制种子的萌发D．若丙图表示老鼠种群增长曲线，若在d点之后通过硬化地面、将生活垃圾无害化处理等措施将使K下降2．对下列相关图的叙述中，正确的是（）A．甲图若表示某二倍体生物细胞，表示的时期为减数第一次分裂后期B．乙图表示在不同生命活动过程中，细胞内染色体数的变化曲线，男人和女人在b过程中可以出现两条X染色体C．丙图中直接刺激肌肉可以引起其兴奋收缩，并能在g、f、e处检测到膜电位变化D．丁图为种子萌发的过程，甲为淀粉含量的变化曲线，乙为每个细胞中DNA总量的变化曲线3．在一个种群中发现两种突变性状，其中一种性状无论繁殖几代都不变，而另一突变性状繁殖到第三代又有37.5%的性状回复到原有性状，以上突变分别属于（）A．隐性突变和显性突变 B．显性突变和隐性突变C．人工诱变和染色体变异 D．都是显性突变或者都是隐性突变4．某同学设计了如下图关于植物的向地性生长的实验：首先在花盆里种植物的幼苗，把花盆固定在直径为2m的圆盘的边缘处，盆底与地面成45°角。
然后，旋转圆盘使花盆水平方向所受的力与垂直方向的重力相同。
最后，保持圆盘旋转的速度长期不变，观察植物根部生长的方向将是下列四选项中的（）5．选择正确的实验方法是实验成功的关键。
下表是一系列生物学实验及其常用的实验方法，其中正确的有几项（）序号实验内容实验方法序号实验内容实验方法①制作DNA分子双螺旋结构模型构建概念模型法⑥赫尔希和蔡斯的噬菌体侵染细菌的实验同位素标记法②探究酵母菌的呼吸方式对比实验法⑦分离叶绿体中的色素纸层析法③研究细胞器的结构和种类密度梯度离心法⑧摩尔根证明基因在染色体上类比推理法④调查土壤中小动物的丰富度标志重捕法⑨观察洋葱根尖细胞的有丝分裂活体染色法⑤证明DNA进行半保留复制差速离心法⑩萨顿提出“基因位于染色体上”的假说假说—演绎法A．二项 B．三项 C．四项 D．五项第Ⅱ卷（非选择题共50分）二．非选择题（共4题，共50分，每空2分，说明的除外）1．(9分，每空1分）)请根据如图所示的实验装置探究小麦的麦穗与叶片光合作用速率的关系，完成实验设计和分析。
2012高考语文专题考前限时训练题16.pdf
要 点 探 究 要 点 探 究 课 标 解 读 课 标 解 读 考 点 精 讲 考 点 精 讲 第25课时 南方地区 第25课时┃ 南方地区 课 标 解 读 课标解读 考点精讲 要点探究 主要考点 课标解读 南方地区的自然特征 1.运用地理图表和资料明确南方地区自然环境的特征。
2.分析归纳南方地区自然环境对当地人文地理的影响 长江三 角洲 1.运用资料了解长江三角洲自然环境对农业生产的影响。
2.了解长江三角洲城市发展及对人们生活的影响 香港和 澳门 1.知道香港、澳门特别行政区的位置、组成、经济发展特点。
2.根据资料了解香港在国际金融、贸易、航运中的重要地位 台湾1.认识台湾省自古以来一直是祖国不可分割的神圣领土。
2.在地图上指出台湾省的位置和范围，分析其自然地理环境和经济发展特色 考 点 精 讲 考点1 自然特征 1．自然环境 (1)位置和范围：南方地区位于__________以南，青藏高原以东，东面和南面分别濒临东海和南海。
(2)地形：西部以高原和盆地为主，东部有交错分布的平原、低山和丘陵。
(3)气候：南方地区属于________、热带季风气候，水热充足，土壤呈现红色，因此被称为“______”。
2．农业 南方地区耕地多为_______，主要粮食作物是_______，还是我国主要的亚热带水果产区。
秦岭－淮河 第25课时┃ 南方地区 亚热带 红土地 水田 水稻 课标解读 考点精讲 要点探究 考点2 长江三角洲地区 1．自然环境 (1)位置和范围：长江三角洲地区主要包括上海市、江苏省南部和浙江省北部地区，位于______的下游地区，濒临黄海和东海。
(2)自然环境：地势低平、河网密布，自古以来就是我国著名的“____________”。
2．城市分布 (1)分布特征：长江三角洲地区是我国城市分布最密集、经济发展水平最高的地区，形成了我国最大的城市群——长江三角洲城市群。
第25课时┃ 南方地区 长江 鱼米之乡 课标解读 考点精讲 要点探究 (2)主要城市：______是长江三角洲城市群的核心城市，也是我国最大的城市。
2012届高三生物限时训练6+4+2选1(一)(2021年整理)
2012届高三生物限时训练6+4+2选1(一)(word版可编辑修改)编辑整理：尊敬的读者朋友们：这里是精品文档编辑中心，本文档内容是由我和我的同事精心编辑整理后发布的，发布之前我们对文中内容进行仔细校对，但是难免会有疏漏的地方，但是任然希望（2012届高三生物限时训练6+4+2选1(一)(word版可编辑修改)）的内容能够给您的工作和学习带来便利。
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2012届高三生物限时训练6+4+2选1（一)1．植物受伤时,会释放出系统素（一种由18种氨基酸组成的多肽）与害虫和病原微生物的受体结合，活化蛋白酶抑制基因，抑制蛋白酶活性,限制植物蛋白的降解，从而阻止害虫取食和病原菌繁殖。
下列关于系统素的描述，正确的是A．系统素能抑制植物体内与蛋白酶有关基因的表达B．系统素能与双缩脲试剂发生作用，产生砖红色沉淀C．系统素是植物“抗体"，能与外来“抗原”特异性结合D．系统素的合成与分泌与核糖体、内质网和高尔基体有关2．下列有关植物激素调节的叙述,正确的是①可利用适宜浓度的赤霉素促进细胞伸长,使植物增高②在植物组织培养中生长素和细胞分裂素的不同配比会影响组织分化③使同种植物的扦插枝条产生相同生根效果的2,4-D浓度相同④在太空失重状态下植物激素不能进行极性运输，根失去了向地生长的特性A．①②B．③④C．①③D．②④3．右图表示某二倍体动物体内两个不同分裂时期的细胞,据图分析下列叙述错误的是A．甲细胞处于有丝分裂后期，乙细胞处于减数第二次分裂后期B．乙细胞中含有2个染色体组，不含同源染色体C．该动物可能是雌性,且体细胞中有4条染色体D．甲细胞发生变异的原因是交叉互换4．下列关于实验材料选择或实验方法选择的叙述，不正确的是A．进行还原性糖鉴定时，可以选择比较甜的西瓜为实验材料B．进行质壁分离和质壁分离复原实验时，采用引流法可使细胞处于不同的液体环境C．赫尔希和蔡斯用32P和35S分别标记T2噬菌体的方法，证明DNA是遗传物质D．观察细胞中DNA、RNA分布时，使用甲基绿—吡罗红混合染色剂5．下图为下丘脑某神经细胞的部分膜结构示意图，下列叙述正确的是A．若此图为突触后膜局部结构,则兴奋经过此处时的信号转换是：电信号→化学信号→电信号B．此细胞可以分泌促进水重吸收的激素,且该激素一经靶细胞接受并起作用后就被灭活了C．该细胞可参与形成体温调节中枢、呼吸中枢等重要的生命活动中枢D．动作电位的形成与膜上的②、④等载体有关，A面为正电位，B面为负电位6．下列有关概念间的关系图（只表示包含关系，下方文字用大圆表示），错误的是29．请分析下列有关玉米的实验，并作答：某生物实验小组利用学校实验室进行测定光合速率实验，设计了如下装置，反应杯的溶液中通入了一定量的CO2，并放置了10片相同的玉米叶圆片，请回答下列问题:(1）玉米叶圆片放入反应杯前需抽空叶肉细胞间隙内的气体,目的是。
限时集训(二十二)
限时集训(二十二)改革开放的新局面(时间：45分钟满分：100分)一、选择题(每小题5分，共60分)1．(2012·章丘一模)“它通过渐进式的改革，对原来僵化的农业经济体制实行了自我完善，使之变为新型的农业体制，使亿万农民掌握了生产经营的自主权，生产积极性大大提高。
这是在党的领导下我国农民的伟大创造。
”上述材料评论的是()A．农业社会主义改造 B．“大跃进”运动C．人民公社化运动D．家庭联产承包责任制2．(2012·临沂期末)下图是我国某地城乡居民年人均收入表，图中的城乡差距最小年的出现是因为()A．社会主义市场经济体制目标的建立B．实行从沿海到内地的开放格局的确立C．农村改革已全面展开，城市改革刚刚起步D．对国有企业进行改革，建立现代企业制度3．(2013·皖南测评)邓小平曾指出：“农业稳了，工业也就稳了；农业不稳，工业就提心吊胆。
”以下历史事件最不能印证这一观点的是()A．大跃进B．农村人民公社化运动C．农村经济体制改革D．扩大企业自主权4．(2012·安徽名校模拟)有人把我国的国有企业改革划分为初步探索、制度创新和纵深推进三个阶段，其中1993～2003年被称为制度创新阶段。
这里的“创新”具体是指() A．按劳分配制度的创新B．管理模式的创新C．所有制方面的创新D．社会主义市场经济体制的创新5．国家机构的改革反映了时代的变迁。
新中国成立后，1952年成立“国家计划委员会”，1998年更名为“国家发展计划委员会”，再到如今的“国家发展和改革委员会”，这种变化反映出()A．机构精简，提高行政效率B．社会主义市场经济体制的建立C．政治经济体制改革的深入发展D．市场经济的发展已不需要计划6．(2012·浙江四校一模)1992年，垂暮之年的邓小平，靠着自己的睿智和威望，将徘徊中的改革之舟推向一个新航程。
这个“新航程”是()A．建立社会主义市场经济体制B．形成一个多层次、有重点的对外开放新格局C．依法治国，建立法治国家D．建设中国特色社会主义7．(2012·日照一模)1987年9月，国务院颁布《投机倒把行政处罚暂行条例》，打击投机倒把分子。
16分钟选择试题限时训练之4
16分钟单项选择题限时训练之41．夏令时也叫“日光节约时制”，夏令时开始时全国将当地时钟拨快1小时。
2012年欧洲国家夏令时将于3月25日格林尼治时间凌晨1点开始，至2012年10月28日结束。
下列说法不正确的是 A ．夏令时实施有利于欧洲国家削减照明和耗电开支 B ．当英国为夏令时2012年4月1日23：00时，北京时间为2012年4月2日6：00 C ．欧洲夏令时期间，由北京飞往法国的航班飞行时间将节省1小时 D ．实行夏令时所考虑的主要因素是昼夜长短的季节变化 2．读“汕头雾生和雾消的日平均变化频率曲线”图（图1），下列说法正确的是A ．07：00—14：00时段内，不会有雾B ．太阳高度最大时，雾消频率最大C ．雾生和雾消与气温变化无关D ．日出前后，雾生频率最大2012年2月份以来，欧洲东部、中部和北部地区出现了强降雪和极端严寒天气。
图2为欧洲部分地区某日天气系统，读图，回答3～4题。
3．未来几天将导致甲城市出现暴风雪天气的天气系统是A ．反气旋B ．准静止锋C ．冷锋D ．暖锋 4．乙河被称为欧洲的“黄金水道”，影响其航运价值的原因分析不正确的是 A ．地形平坦，水流平缓 B ．冬季结冰，封冻期长C ．降水均匀，水量季节变化小D ．社会经济发达，航运需求量大5．图3为“风力搬运随高度的变化”示意图，与图示信息相符的是 A ．同一高度，沙粒越小，风力所搬运的沙重量越大B ．风力搬运的沙重量与高度呈正比C ．风力所搬运的中沙重量不超过50克，粗沙重量不超过10克D ．在50厘米以下的高度随高度增加，风力所搬运的沙重量，细沙的变化幅度最小6．一小时里程可以反映一个地区的交通通达性，图4是不同年份到某市商业中心1小时里程。
下列说法最可信的是 A ．从1960年到2010年该市的交通通达性逐渐提高 B ．从1980年到2000年该市交通拥堵现象严重图3图 2图1C ．2000年前后该市的公交条件改善和少量私家车的出现D ．2000年至2010可能出现地铁“人口红利”是指一个国家的劳动年龄人口占总人口比重较大，抚养人口比重低。
限时训练2
高考生物限时训练（二）(完卷时间：40分钟； 满分：72分)1、下图为人体细胞的形态、数目变化情况，据图分析下列说法正确的是()A ．图①②③过程中细胞的遗传信息表达过程不同B ．①②③三个过程中已经发生了基因突变的是②③C ．③过程使细胞的遗传物质有所差异，但细胞的形态和功能没有变化D ．与甲相比，乙中细胞的表面积/体积的比值增大，与外界环境进行物质交换的能力增强 2、重庆一市民发现买的新鲜猪肉晚上发蓝光。
专家解释，猪肉中含磷较多且携带了一种能发光的细菌——磷光杆菌时就会发光。
只要将猪肉煮熟，就可食用。
下列关于磷光杆菌的叙述不正确的是( )A ．磷光杆菌的遗传物质彻底水解的产物有6种B ．发光源于磷光杆菌的线粒体合成的ATP 提供的能量C ．磷光杆菌的基因中一定有与RNA 聚合酶的结合位点D ．磷光杆菌分裂繁殖时可能发生基因突变，不发生基因重组3、某农业研究所将抗虫基因（B t 基因）导人棉花（二倍体），筛选出B t 基因成功整合到染色体上的抗虫植株（假定B t 基因都能正常表达）。
经检测发现某些抗虫植株体细胞中含有两个B t 基因，某中学生兴趣小组成员以这两个B t 基因在染色体上的整合位点为课题进行了实验探究，将该抗虫植株自交，发现后代中出现抗虫植株和非抗虫植株，且比例为15:1，则这两个基因在染色体上的整合方式可用下图中的 表示（竖线表示染色体，黑点表示B t 基因的整合位点）()4、某海边的潮间带有一些洼地，由于退潮时海水仍会积留在洼地中，因而形成所谓的潮间池。
潮间池中最强势的捕食者为一种海星，其主要猎物为某种贻贝，而该贻贝则是靠捕食潮间池中的无脊椎动物和藻类为生。
有一位生态学家在上述的潮间池中进行实验，他将部分潮间池的海星全部移除，其它潮间池的海星则保留，然后进行连续十年的调查，并记录潮间池内物种数的变化，结果如图。
根据上述资料，下列分析正确的是( )A ．在实验组的潮间池中，物种数每年持续减少B ．在对照组的潮间池中，最强势的捕食者为贻贝C ．实验说明移除生态系统中的主要捕食者，可能使该生态系统的组成物种数显著减少D ．实验说明若受到相同外在因素的持续干扰，生态系统内的组成物种数将无法维持稳定 5、下丘脑可通过神经支配肾上腺髓质细胞合成肾上腺素，促进糖元分解并升高血糖，促进脂肪分解。
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2012.9.16基本能力限时训练一、单选题1、在音乐记号里“p”表示的意思是A．强 B．弱 C．中强 D．中弱2、3/4拍表示一小节内有几拍A．四拍 B．八拍 C．六拍 D．三拍3、将“5”这个音降低半个音的写法是A．b C B．b D C．b E D．b G4、“×”这个符号是A．升记号 B．降记号 C．还原记号 D．重升记号5、大调音阶中唱名为“la”的音名字母的写法是A．C B．D C．A D．B6、4/4拍子的强弱规律正确的是A．○○● B．C．○●○ D．●○○7、mi到fa之间是全音关系还是半音关系A．全音 B．半音8、“”中，标注在音符下方的横线叫A．减时线 B．延音线 C．增时线 D．圆滑线9、以四分音符“5”为一拍，那么全分音符“5———”唱几拍A．1拍 B．2拍 C． 4拍 D．3拍10、四分附点音符“6·”时值为几拍A．1拍半 B．2拍半 C．3拍半 D．4拍半11、记在两个或两个以上相同音高音符上方的“”叫做A．增时线 B．弧线 C．延音线 D．圆滑线12、记在音符上方的符号是A．连线记号 B．延长记号 C．断音记号 D．保持音记号13、在简谱中是A．换气记号 B．反复记号 C．连线记号 D．保持音记号14、在简谱中是A．渐弱记号 B．反复记号 C．渐强记号 D．强后即弱记号15、将记号p、f、mp、mf按由弱到强的顺序排列是A．p—f—mp—mf B．p—mp—f—mf C．p—mp—mf—f D．mp—p—mf—f 16、下列节奏是切分节奏的是A．××× B ．×× C．×××17、下列哪个音符是四分音符A．5——B．5—C．5 D．5———18、下列哪种乐器音乐在2006年被列为第一批国家非物质文化遗产A．热瓦甫B．马头琴C．冬不拉D．札木聂19、被誉为“抒情女高音”的乐器是A．单簧管B．英国管C．双簧管D．长笛20、萨克斯属于组乐器A．铜管组B．木管组C．打击乐组D．弦乐组21、、正确的演唱（奏）法是：A．B、C．D．22热瓦甫是哪个民族的的代表性乐器A．藏族B．蒙古族C．维吾尔D．羌族23、风笛起源于古罗马，有一种风笛是不用嘴吹的，发音柔和、抒情的是A．苏格兰风笛B．爱尔兰风笛24、京剧中一板一眼指的是A．1/4 B．2/4 C．3/4 D．4/425、象征孔武有力、粗鲁莽撞性格的脸谱是A．红脸B．黑脸C．白脸D．蓝脸26、山东的代表剧种是A．越剧B．评剧C．吕剧D．豫剧27、哪个剧种最初由男班演出，后改为男女混合班或全部女班演出A．越剧B．评剧C．吕剧D．豫剧28、戏曲《天仙配》、《女驸马》是属于A．越剧B．评剧C．黄梅戏D．豫剧29、下列哪个音符是二分音符A．5——B．5—C．5 D．5———30、京剧中一板三眼指的是A．1/4 B．2/4 C．3/4 D．4/431、简谱中记录在音符上方的“▼”是什么记号？A．断音记号B．反复记号C．重音记号D．保持音记号32、C到D之间是全音关系还是半音关系A．全音 B．半音33“bb”这个符号是A．升记号 B．重降记号 C．还原记号 D．重升记号34、下列乐器属于弹拨乐器的是( )。
A.阮B.中胡C.高胡D.板胡35、新凤霞是的代表人物。
A．吕剧 B．豫剧 C．黄梅戏 D．评剧36、《甘洒热血写春秋》出自下列哪部现代京剧A《杜鹃山》B《英雄血泪图》C《沙家浜》D《智取威虎山》37、京剧的唱腔分为西皮和二黄，其中板起板落的是A．西皮 B．二黄38、《谁说女子不如男》是哪个地方的剧种A．山东 B．河南 C．安徽 D．河北39、变脸是哪个剧种中的民族民间艺术A．吕剧 B．川剧 C．粤剧 D．昆曲40、下列哪个人物是京韵大鼓的代表人物，被称为“金嗓歌王”。
A．袁雪芬 B．马金凤 C．骆玉笙 D．刘宝全41、专利的申请和获得要经过以下几个阶段：1、初审 2、授权 3、提交申请 4、实质审查 5、公布 6、受理。
正确的顺序是（）A、1—2—3—4—5—6B、3—6—1—5—4—2C、3—6—1—4—2—5D、4—6—2—1—3—542、在发现与明确问题的基础上，接下来就要制定设计方案，通常制定设计方案的顺序是（）A、收集信息方案筛选方案呈现方案构思B、收集信息方案呈现方案构思方案筛选C、收集信息方案构思方案筛选方案呈现D、收集信息方案构思方案呈现方案筛选43、以下尺寸标注错误的是：（）A B C D 44、为了测试汽车安全气囊的安全性，用计算机制作汽车碰撞的全过程，结果“驾驶员”头破血流。
这种试验方法属于（）A、强化试验法B、虚拟试验法C、优选试验法D、模拟试验法45、购买产品后，都会有相应的产品使用说明书，产品使用说明书的功能不包括（）Ａ．使用户更合理的维护产品B．使用户更好的使用产品。
C．使用户更安全的使用产品D．使用户自己能维修产品46、常用的A形梯不直接采用铝合金片，而用长方形截面的铝合金构件，这说明了（）影响着结构强度A、材料B、构件的形状C、重心的高低D、连接方式47、学校自行车车棚顶覆盖有波浪型塑料瓦,这种设计除了加快雨水的流淌外,更重要的是增强了塑料瓦的坚固程度,这说明了( )影响结构的强度.A、材料的颜色B、材料的形状C、材料的重心D、材料的成分48、汽车传动轴主要受到的作用力是（）A、拉力Ｂ、压力Ｃ、弯曲力Ｄ、扭转力49、小明要用一大段树枝制作马扎，那么制作马扎的流程相对比较合理的是（）①划线后将木条锯成八段②划线后凿方孔、锯榫头③刨削、挫平④喷涂油漆⑤装配⑥钻孔A、①②③⑥⑤④B、③①②⑥④⑤C、①③②⑥⑤④D、①②③⑤④⑥50、如图所示为脚踩式垃圾桶结构原理图,通过踏板,带动中间的连杆，推动桶盖开启。
脚踩式垃圾桶系统出现踏杆弯曲，连杆断裂等故障时，脚踩踏板将无法把桶盖打开如果采用系统与设计的观点分析，不能体现的是（）A.各要素之间相互联系、相互作用，按照一定的方式形成整体B.系统整体所具有的功能不是各要素所能代替的C.某一要素(构件)功能损坏将导致整个系统功能丧失D.系统的整体利益大于各要素的利益，为了系统整体利益，往往舍弃局部利益。
51、合金钢材料中，碳含量的高低影响着钢的强度.硬度和韧性,从而影响钢的耐磨性。
碳含量高，则硬度高、韧性差;碳的含量低、则硬度低、耐磨性差。
这反应了系统的什么基本特性（）A .相关性 B.环境适应性 C.目的性 D.整体性52、一种高档轿车的底盘能根据道路的情况自动升降，当行驶在平坦的公路上时，能使底盘降到最低，以降低重心，提高高速行驶时的稳定性；当行驶到路况较差的路面时，底盘能自动升高，以保证汽车底盘不与路面碰撞。
这种特性表明该轿车具有良好的（）A.整体性B.相关性C.环境适应性D.目的性53、汽车的耗油性能是用每公里的耗油量来衡量的，用最低档速行驶虽然油门很小，但因燃烧不完全，每公里耗油量不是最小,同样，用最大档速行驶，因为偏离了最佳状态,也不会获得理想的省油效果。
只有使用“经济速度”（介于最大速度和最低档速度之间的某一速度）才能使每公里耗油量最小，这个现象说明了系统具有（）A.整体性B. 相关性C.目的性D.环境适应性54、2008年初我国南方遭遇百年一遇的雪灾，由于高压输电线和铁塔上积了大量冰挂，部分强度不好的铁塔被压垮，从而导致大批铁塔相继倒塌，造成大面积停电。
从系统的角度理解，下列说法中不恰当的是（）A．部分铁塔的倒塌影响了输电系统的整体功能B．该输电系统的相关性是造成这种损失的原因之一C．该输电系统的目的性不明确D．该输电系统的环境适应性不好55、系统分析的目的是：（）A、为了减少实验的失败B、为了减少系统内子系统的要素C、为了减少设计决策的风险D、为了减少设计过程的不确定因素。
56、下列不属于系统分析方法的步骤是（）A、推理归纳B、阐明问题C、分析研究D、评价比较57、丁谓修复皇宫，把烧砖、运输建筑材料和处理废墟三项繁重的工程任务看成一个整体中的相关部分，加以协调处理，从而找到获得最佳效果的方案，节省了大量劳力、费用和时间,一举三得。
丁谓实际上是运用了：（）A、系统分析的基本方法B、系统设计的基本方法C、收集资料的方法D、调查研究的方法58、系统优化的意义（）A．获取系统的最佳效益或最佳功能B．改善系统的环境C．调整系统的结构D．改变系统的特征59、某工艺厂要购买一批木材，用于制作叫精致的十二生肖的艺术品。
从设计师的角度，你会推荐该厂选用哪种木材（）A、杉木B、松木C、梓木D、樟木60、关于工艺的说法正确的是（）A、外形美观B、价格C、加工性能D、使用功能和寿命61下面有关木工工具描述中，正确的是（）A、常用木工工具有锯、刨、凿、斧、钻、锉等。
B、木工刨子是用来对材料表面进行刨削，使其光滑、平直的工具，最常用的是长刨。
C、锯子有多种，粗齿锯用于锯割较厚的木材。
D、木工画线工具有木工铅笔、划线规、画针、墨斗等。
62、航天员去太空前要在地面上做充分的试验与训练，其地面训练一般在一个对比重有一定要求的中性水池里进行。
这种试验属于（）A、优选试验法B、虚拟试验法C、模拟实验法D、强化试验法63、为了对导线的通电情况“心中有数”，某人设计了一个试验来检测一根细铜丝在通过多大电流时会被烧断。
这属于试验方法中的（）A、移植试验法B、虚拟试验法C、模拟实验法D、强化试验法64、岱庙建筑历经千年仍然保持稳固，成为建筑史上的奇观，下面选项中对其建筑稳定性不构成影响的是（）A、结构的形状B、结构的材料C、结构的连接形式D、当地适宜的气候条件65、吊扇在启动的瞬间，吊杆的主要受力形式有（）①拉力②压力③剪切力④扭转力A、①④B、①②C、①③D、②③66、通常见到的伸缩门，其可伸缩部分是才用了四边形结构，这些四边形构件的连接方式是（）A焊接 B、榫接 C、刚连接 D、铰连接67、如右图，椅子的脚粗细不一，一个人坐上去之后，关于a 、b两处应力的大小，下列说法正确的是（）A、a处应力大，b处应力小B、a处应力小，b处应力大C、a、b两处的应力一样大D、a、b两处的应力大小不能比较68、在日常生活中，你所见到的以下哪一个结构是不属于利用不稳定的结构实现某些功能的（）A、游乐设施的跷跷板功能结构；B、房间门口的活页功能结构；C、学校运动场的篮球架结构；D、圆珠笔的笔嘴结构。
69、高三同学王军设想：若有一种仪器，只要往肉里一插，马上就让“注水肉”现行，该有多好！于是他根据肉和水都是导电体，但导电率不同，他边试验边改进，最终制作出一台“注水肉”测试仪。
试分析他主要经历了那些设计环节？A．发现与明确问题．制定设计方案B. 制作模型或原型C．测试、评估和优化．产品的使用、说明D．经历了以上全部环节70、创新设计需要创新思维，下列选项中不是创新思维特征的是（）A、开放性B、单向性C、多向性D、独立性71、举办奥运会设计方方面面的问题，总的说来一个是“硬件”，例:场馆、器械、交通等。