2007级模拟
唐山市2006—2007学年度高三年级第一次模拟-新人教
试卷类型:A 唐山市2006—2007学年度高三年级第一次模拟考试文科综合能力测试2007年3月9日上午本试卷分为第I卷(选择题)和第II卷(非选择题)两部分。
第I卷1一6页,第Ⅱ卷7一11页。
满分300分,考试时间150分钟。
考试结束,将试题卷和答题卡一并交回。
第I卷(选择题,共140分)注意事项:1、答题前请仔细阅读答题卡上的“注意事项”,按照“注意事项”的规定答题。
2、做选择题时,如需改动,请用橡皮将原做题擦干净,再涂选其它答案标号。
3、本卷共35小题,每小题4分,共140分。
一、选择题:本卷共35小题,每小题4分,共计140分。
在每小题列出的四个选项中,只有一项是最符合题目要求的。
图1示意的是我国某平原地区不同年代地下水位与年平均气温、午降水量关系,读图回答1——3题。
降水(毫米)气溫(℃) 地下水位(米)1.图中显示]960年一]990年该平原地区A.年降水量逐渐增大 B.年均温逐渐降低C.地下水位逐渐降低 D.年温差逐渐变小2.该平原地区有可能分布在A.东北平原的北部 B.长江三角洲地区C.华北平原中南部 D.珠江三角洲地区3.对该地区农业生产不利的条件是A.多酸性土壤 B.冻土和沼泽C.梅雨和伏旱 D.多盐碱地冰川因全球气温上升而逐渐消融时,其搬运的土石碎屑也因堆积而形成各种冰川堆积地貌。
图2为某地的冰川堆积区的等高线地形图(单位:米,等高距为20米)。
读图回答4-5题。
4.由图中所显示的信息可知,当年冰川流动方向大致为A.东南——西北B.西南——东北C.西北——东南D.东北——西南5.图示地形区可称为A.高原分布区 B.丘陵分布区C.山地分布区 D.平原分布区读表1和图3(五个国家65岁及以上人口占总人口比重变化图),完成6-8题。
表1 联合国颁布的人口年龄类型划分标准注:60岁以上老年人口占总人口的比重达到10%及以上,也属老年型。
6.在20世纪初期已成为人口老年型的国家是A.英国和美国 B.美国和日本C.日本和英国 D。
2007级专升本《市场营销学》模拟测试四参考答案
2007级专升本《市场营销学》模拟测试4参考答案一、填空题(每小题1分,共10分。
)1.交易通常有两种方式:一是货币交易,二是_______________。
2._______________一直是企业感知外部世界的常用手段。
3.生产者市场是指购买商品及劳务投入生产经营活动过程以_______________的组织。
4.辨认_______________,有助于将营销活动有效地指向目标顾客,制定正确的营销战略。
5.市场营销信息系统是由_______________、设备和程序组成,它为营销决策者收集、挑选、分析、评估和分配所需要的适时和准确的信息。
6._______________是企业打算进入的细分市场。
7.决定市场挑战者正面进攻胜负的是_______________原则。
8.新产品定价有两种策略可供选择,即撇脂定价和_______________定价。
9.绝大多数人不喜欢,甚至愿意花一定代价来回避某种产品(如防疫注射,高胆固醇食品等)的需求状况,我们称之为_______________。
10.战略环境有关因素变化的结果,对企业及其活动产生不利的影响叫_______________。
二、单项选择题 (在下列各题选项中, 选择一个最合适的,并将其选项代码填写在答题纸上。
不选或多选,均为零分。
每小题1分,共10分)1.从管理决策的角度研究市场营销问题时,其研究框架是将企业营销决策分为目标市场和_________两大部分。
A.宏观环境 B.微观环境C.企业不可控因素 D.营销组合2.企业感知外部世界的所有活动,我们称之为_________。
A.倾听 B.学习C.市场调查 D.市场营销3.购买商品和服务供自己消费的个人和家庭,被称为_________。
A.生产者市场 B.消费者市场C.转售市场 D.组织市场4.蓝图技巧也称为服务过程分析,主要是借助_________分析服务传递过程的各个方面。
A.服务作业流程图 B.服务公约C.计算机 D.网络图5._________是购买活动的起点。
[建造师]2007一级建造师《法规知识》模拟(2)
2007一级建造师《法规知识》模拟(2)一、单选[共70题,每题1分,总计70分]1、建设单位迫使承包方以低于成本价格竞标的,应处()的罚款。
A 、20万以下B、20万以上50万以下C、项目合同金额的5%D、项目合同金额的10%2、商标的构成要素不包括()。
A、商标的名称B、商标的图案C、商标的颜色D、商标的使用范围3、下列合同中,属于从合同的是()A、买卖合同B、借款合同C、保证合同D、承揽合同4、甲与乙签订一房屋买卖合同,甲已支付一半房款,此时甲请求乙交付房屋并办理过户手续,然后才支付另一半房款。
以下说法正确的是()。
A、依诚信原则,乙不得行使同时抗辩权B、乙有权行使同时抗辩权C、甲违月约在先,乙有权解除合同D、乙行使不安抗辩权5、根据我国法律,以下不属于中标条件的是()。
A、能最大限度满足招标文件中规定的各项综合评价标准。
B、能满足招标文件的实质性要求C、招标价格低于成本D、招标价格最低6、以下情形中不符合生产经营单位安全生产基本要求的是()。
A、生产经营单位为安全生产设施投入大量资金B、设置安全生产管理机构管理危险物品的经营储存C、配备劳动防护用品D、由从业人员个人缴纳工伤社会保险7、发包单位将工程发包给不具有相应资质条件的承包单位的,将被如何处理()。
A、责令改正,处以罚款B、责令停止施工C、吊销资质证书D、没收违法所得8、当事人不服地方人民法院第一审判决的,有权在判决书送达之日起()内向上一级人民法院提起上诉。
A 、10日B、15日C、30日D、60日9、股份有限公司的权力机构是()。
A、股东大会B、股东会C、董事会D、监事会10、接受委托为建设项目影响评价提供技术服务的机构,应当经过()考核审查合格后,颁发资质证书。
A、县级以上环保行政主管部门B、市级以上环保行政主管部门C、省、自治区、直辖市的环保行政主管部门诉讼D、国务院环保行政主管部门11、以下情形不属于安装工程一切险承保的范围是()。
[建造师]2007年一级《建设工程法规知识》模拟试题(1)
2007年一级《建设工程法规知识》模拟试题 (3)一、单项选择题(每题1分。
每题的备选项中,只有1个最符合题意)1.甲公司与乙签订水泥运输合同,由于乙的车出了故障,乙委托好友丙代为运输,并约定运价。
丙中途将车停在路边,下车去吃饭。
此时下起暴雨,将车上的水泥淋湿大半,已无法使用。
对于甲公司的损失,应该由()承担赔偿责任。
A.由甲公司自己承担B.由乙承担C.由丙承担D.由乙丙共同承担2.专利权的客体不包括()。
A.发明B.实用新型C.外观设计D.内部构造3.必须进行招标的项目而不招标的,可以处项目合同金额()的罚款。
A.5‰以下B.5%以下C.5%以上到10%以下D.5‰以上到10‰以下4.依照法律规定,下列财产可以抵押的是()。
A.自留山B.某中学校长的小车C.某大学的教学楼D.宅基地使用权5.建设单位必须在(),向建设行政主管部门或其授权部门办理工程报建登记手续。
A.建设工程立项批准后B.工程发包后C.工程发包前D.建设工程立项批准后,工程发包前6.按照国务院有关规定批准开工报告的建筑工程,因故不能开工超过()的,应当重新办理开工报告的批准手续。
A.1个月B.3个月C.6个月D.1年7.从债权的内容看,债权的性质是()。
A.对人权B.对事权C.相对权D.绝对权8.在拆除工程前,建设单位要报送建设工程所在地的县级以上人民政府主管部门备案的材料中不包括()。
A.施工单位资质等级证明B.拆除工程预算C.拟拆除建筑物、构筑物及可能危及毗邻建筑的说明D.拆除施工组织方案9.张某11周岁的儿子,在课问与同学打架,致使同学摔伤,花去医疗费2000多元。
这笔医疗费应该由()承担。
A.由学校承担B.由张某承担C.主要由学校承担,如果张某的儿子有过错,可责令张某给予适当补偿D.主要由张某承担,如果学校有过错,可责令学校给予适当补偿10.建设单位因故不能按期开工的,最多可以向发证机关申请()延期。
A.2次B.3次C.4次D.5次11.新建、扩建、改建的建设工程,建设单位在()向建设行政主管部门或其授权部门申请领取建设工程施工许可证。
[建造师]2007年一级《建设工程法规知识》模拟试题
2007年一级《建设工程法规知识》模拟试题 (4)一、单项选择题(每题1分。
每题的备选项中,只有1个最符合题意)1.外观设计取得专利权的条件是()。
A.新颖性B.创造性C.实用性D.专属性2.在建的建筑工程因故中止施工满1年而后恢复施工的,建设单位应该()。
A.向发证机关报告B.报发证机关核验施工许可证C.重新申请施工许可证D.重新办理报建登记手续3.省、自治区、直辖市人民政府确定的地方重点项目不适宜公开招标的,经()批准可以进行邀请招标。
A.国务院B.国务院发展计划部门C.省、自治区、直辖市人民政府D.项目工程所在地人民政府4.甲公司向乙公司购买一批涂料,乙公司委托丙公司运送这批货物。
丙公司指派本公司员工丁负责运送。
运输过程中,因丁的过失发生交通事故,导致货物受损。
对于货物的损失,应当由()承担赔偿责任。
A.甲公司B.乙公司C.丙公司D.员工丁5.下列不符合建筑工程领取施工许可证的条件的是()。
A.已经办理了建筑工程用地批准手续B.施工现场需要拆迁的,其拆迁进度符合施工要求C.施工设计中有根据建筑工程特点制定的相应质量、安全技术措施D.建设工期不足1年,现有到位资金达到工程合同价的30%6.根据法律规定,对于限制民事行为能力人所订立的合同,相对人可以催告法定代理人在()内予以辨认?A.1个月B.3个月C.6个月D.1年7.人民法院决定冻结、划拨存款的,应当()。
A.作出判决B.作出裁定C.发出协助通知书D.作出裁定,并发出协助通知书8.建设行政主管部门应当自收到领取施工许可证的申请之日起()内,对符合条件的申请颁发施工许可证。
A.10日B.15日C.20日9.下列做法符合法律规定的是()。
A.招标人以不合理条件限制投标人B.招标人将标底告知尚未获取招标文件的投标人C.招标人拒收在招标文件要求提交投标文件的截止时间后送达的投标文件D.投标人修改投标文件并口头通知招标人10.商标按照特殊性质可以分为()。
英语四级模拟测试试题参考答案
2007级第二次模拟测试试题参考答案作文参考范文Will E-books replace traditional books?Recent decades have seen the rapid development of information technology, and thereby E-books have wound their way into our daily life. Because of the wide and quick popularity of E-books, there has been an increasing controversy over the question of whether E-books will replace traditional books or not.Many people hold the idea that it will not take long for E-books to replace traditional books because E-books have quite a few advantages over traditional ones. First, E-books are more accessible to readers, because the readers just need to log onto the internet and read online. Second, thanks to the advanced technology, the cost of E-books is much lower, so it takes readers far less money to buy E-books. Last but not the least, reading E-books has developed into part of our daily life, which is particularly appealing to young users, who are the body part of the users of electronic products.As far as I’m concerned, it is not likely for E-books to replace traditional books for lots of reasons. For example, long time of reading E-books will do more harm to our eyes, and readers will find themselves more accessible to printed materials because computers and the internet haven’t yet been popular ized to every corner of our life.快速阅读 1. A 2.D 3.B 4.C 5.A 6.B 7.C8. quite homogeneous, but small 9.relationships with consumers 10. the appropriate /proper media听力:11-15. ADBBD 16-20 ABA AB 21-25 CDDAD 26-30 CACCA 31-35 DBCAD36.highest37.professional wyers39.survived40.engineering41.Requirementsanized43.full-time(44) present their findings by writing a long paper that they have to defend before a group ofexperts.(45) Every year, the federal government collects information on research doctorates awarded inthe United States.(46) Close to one-third of those doctorates went to foreign students in the United States on atemporary visa.选词填空47-51AIEFG 52-56 LJCNO段落阅读56-61 BDDCA 62-66 CDBAB完形填空67-71 CBADC 72-76 BDABB 77-81 AAABD 82-86 CACDA翻译87.______________ (把一切考虑过后), the trip to Paris has to be called off. (核心密卷4)All things considered / Considering everthingEverything taken into account/consideration88.Prices are going up rapidly. Petrol now __________(现在汽油的价格十几年前的两倍) (核心密卷3)is twice as expensive as it was a few years agois twice the price of a few years ago89._____________________________ (任何国家无论在什么情况下都不可以)have theright to use nuclear weapons.( Under no circumstances should any nation)(06级第五次模拟试题)90.By contrast, American mothers were more likely ______(把孩子成功归因于)natural talent.(to attribute their children’s success to)(试点考试样卷)91.The victim ______(本来会有机会活下来)if he had been taken to hospital in time (wouldhave had a chance to survive)(2006年12月23英语四级真题)听力原文11.W: I’m thinking of having more time to look for a good j ob next semester, so perhaps Ishould take five courses this semester.M: Wouldn’t four be wiser? Unless you’re absolutely sure of yourself.Q: What does the man imply about the courses?12.M: So you are not joining us on the trip to the theme park today? What are you working on sodiligently?W: An editorial for the newspaper. If I miss the midnight deadline, it won’t be p rinted until next week.Q: What is the woman trying to do?13.M: Have you seen the author’s latest bestseller? I hear it’s quite an interesting book.W: I’ve just finished it, I really recommend it.Q: What does the man and woman discussing?14.W: So you ha ve completed the experiment. You didn’t have too much trouble doing that, didyou?M: It only took me most of the day. It really isn’t much different from the one I did last time.Q: What are the man and woman discussing?15.W: Where can I find a map of the university campus? I did not expect I would get lost here.M: Have you tried the information centre?Q: What does the man imply about the information office?16.M: Could I hand in my paper a few days later? I think I still need to do more research on thesubject.W: I’m afraid that’s out of the question.Q: What does the woman mean?17.M: We’ve sure been having a lot of rain lately; this might cause more oxygen in the water.W: Haven’t we ever?Q: What do we learn from the woman’s response?18.M: I can’t believe your room is such a mess. Why don’t spend some time trying to make itclean and tidy?W: Have you been to our room? That’s Joan’s room.Q: What does the woman mean?W: Wonderful! I spent most of my time at the art museum. I especially liked the new wing. I was amazed to hear the guide explain the problems they had building it.M: Right. I just read an article that went on and on about the cost – 90 million total I thinkW: Yeah. The guide mentioned that. You could see they spared no expense.M: It looked really unusual, at least from what I saw in the picture.W: It is. The basic design is two triangles. In fact there are triangles all over. The paving stones in the courtyard, the skylights and even a lot of the sculptures.M: One sculptur e is a mobile. It’s in the courtyard and it’s made of pieces of aluminum that moves slowly in the air. It’s really impressive.W: That was in the article too. It was said that the original was steel and it weighed so much that it wasn’t safe to hand.M: Right. They did it over in aluminum so it wouldn’t come crashing down on someone’s head. W: You know the article went into that in detail. There was even an interview with the sculptor. M: I’d like to read that. Would you mind if I borrow the magazine so metime?W: No. I wouldn’t mind if I haven’t thrown it out yet.19.What did the woman think of the new wing of the museum?20.How had the man learned about the museum?21.According to the woman, what do the paving stones, skylights and mobile have in common?22.What was the problem with the original mobile?W: David, can I give you a hand with one of those grocery bags?M: Sure, thank you so much. Could you take this one please? I didn’t realize how heavy these bags would be.W: Why did you buy so much stuff when you have to walk back from the store?M: Well, I didn’t intend to buy a lot. But I’m having some people over and I guess I needed more than I expected.W: What’s the occasion?M: Now the people I live with, the Kremers, have been on vacation for a month and I thought I’d surprise them. I’m inviting some of their friends and families for a welcome home dinner. W: Oh, that’s really thoughtful of you.M: I figure it’s the best I can do for them. They’ve been letting me stay with them rent-free while I’m in school.W: Really? That’s pretty generous of them.M: Well, they understand how difficult it is to make ends meet when you’re a student. They’ve been such a big help to me. I thought that this might be a small way to thank them for the generosity.23.What is David trying to do?24.Why did David buy so much stuff when he had to walk home?25.Why is David appreciative of the Kremers?Passage OneHave you ever had travel problem because you airplane was late? It is a common problem and it is getting worse. Airport delays make people angry and cost the country billions in lost work time.The Federal Aviation Administration or FAA is the government agency that oversees air travel. They studied the problem of airline delays.They found eleven major problems and proposed eleven ways to fix them. Some of the problems are caused because different regions of the country do things differently. Also, more planes are flying. A strong economy has more people using airplanes to get round. Airplanes are a form of mass transportation now, like trains and buses were in the past. More planes in the airport cause delays. Weather is another main reason for delays. Weather causes about 70 % of delays. Fog or freezing rain can cause delays.The first thing the FAA wants to do is take control away from the regions during heavy traffic times and bad weather. A national center would make decisions on things that affect the whole country. The FAA also wants to put more distance between planes in the sky when the weather is bad. This rule could cause even more delays.The FAA knows that their solutions will not cure the problems with airport delays. But, they hope to make things better. There are just too many planes, too few traffic controllers, and not enough new technology.26.What is the problem studied by FAA?27.What is the main cause of airline delays according to the study?28.Why is it likely that the FAA will create more delays?Passage TwoOn March 26, 2000, the Kingdome in Seattle was destroyed. It was taken down to make room for a new stadium. The blast from the falling Kingdome caused the Earth to shake as if an earthquake had happened.Scientists placed more than 200 seismic reorders in the earth to measure the movement. They found which parts of the city shook the most. This information helped them predict which parts of the city would be damaged in a real earthquake.On February 28, 2001, the real thing happened. The earthquake was 6.8 on the Richter scale. It damaged the same parts of Seattle that scientists had predicted from the Kingdome blast. It was a slab quake. It started deep in the earth, 37 miles below the surface on the Juan de Fuca plate.Scientists have learned that deep earthquakes have very few aftershocks. The earthquake had only four. Another earthquake in California that was close to the surface had over 120 aftershocks. Scientists do not know why the deep earthquakes have fewer aftershocks.Scientists plan to set off explosive in the ground near Seattle aimed at the slab. The shockwaves from the blast will bounce off the slab and give them an idea of where the plate is and how it is moving. This will give them more information in case another real earthquake hits the area.29.How was the Kingdome in Seattle destroyed?30.Why did scientists measure the collapse of the Kingdome?31.What is most puzzling to scientists about the earthquake?32.What are scientists planning to do according to the passage?Passage ThreePeople have always looked to the sky and wondered about what they saw. As centuries of discoveries flew by, it became obvious that humans would not be content to just gaze at the solar system. We wanted to blast off into it as well.Once again, technology allowed us to accomplish our goal. On October 4, 1957, a Soviet rocket sent the first man-made satellite into space. It was called Sputnik, the Russian word for “traveler”. Even though Sputnik was nothing more than a small aluminum ball with a radio inside, it started a whole new era of space exploration.In May 1961 President John F. Kennedy challenged American scientists to land a person on the moon before the end of the 1960s. In the quest to do this, scientists faced many obstacles. For example to get a spaceship all the way to the moon and back would demand a rocket engine powerful enough to make the trip.Scientists realized that it would be difficult for one heavy rocket loaded with fuel to reach the moon. Instead, they decide to use a multistage rocket. When the fuel in one stage of a multistage rocket is used up, that stage falls away. This makes the rockets lighter, and the engine of the next stage can ignite and thrust the rocket even faster and higher.As you know, Americans successfully landed on the moon in July 1969. Since then our knowledge of the solar system has increased dramatically.33.Which of the following is NOT true of the first manned space flight?34.What is the key to building a spacecraft bound for the Moon?35.How could the scientists have made the trip to the Moon a success?The (36) highest degree that a student can earn is a doctorate. Some doctorates are (37) professional degrees, as opposed to a degree based on research. Medical students, for example, receive an M.D., from the Latin “medicinae doctor”. Future (38) lawyers receive a J.D., for “juris” or “jurum” doctor, meaning a doctor of law or laws.Someone with a PhD is a “doctor of philosophy. Many people earn a PhD, yet no t many are philosophers. The name has (39) survived since the Middle Ages when many areas of study were called philosophy.Students can receive a PhD in (40) engineering, social work education, music, history and a lot of other areas. (41) Requirements can differ from one university to another and from one area of study to another. But the National Science Foundation says American doctoral education is (42) organized around a research experience.A PhD usually requires at least three years of (43) full-time study after a bachelor’s degree. Usually, PhD candidates must have a master’s degree before they sit for special e xaminations. They have to carry out original research and (44) present their findings by writing a long paper that they have to defend before a group of experts.(45) Every year, the federal government collects information on research doctorates awarded in the United States. More than forty-three thousand students received a research doctorate in 2005.(46) Close to one-third of those doctorates went to foreign students in the United States on a temporary visa. Most of them studied engineering, physical science or life science.。
2007级数学升学模拟卷模拟(人教版)1
2007年小学毕业数学模拟试卷姓名成绩一、填空:20%(每题2分)1、47的分数单位是(),它包含有()个这样的单位。
2、 =6:()=()÷10=()%=()成。
3、 2小时30分=()小时 2 千米=()米240平方分米=()平方米 1 吨=()吨()千克4、一个三角形,三个内角度数的比是1:2:2,这个三角形是()三角形。
5、在自然数里,最小的质数是(),最小的合数是()6、 2:15化成最简的整数比是():(),它的比值是()7、六百六十万五千写作:(),省略万后面的尾数约是()万8、一辆汽车每小时行驶50千米,a小时行驶()千米,当a=3时,这辆汽车所行驶的路程是()千米。
9、5和6的最大公约数是(),最小公倍数是()。
10、时钟在3时30分的时候,时针与分针的较小夹角是()度。
二、判断。
5%1、小数点的后面添上0或者去掉0,小数的大小不变。
………()2、圆锥的体积等于圆柱的体积的…………………()3、一吨煤用去它的,还剩下吨…………………………()4、折线统计不但能表示出数量的多少,而且可以清楚地看出数量增减变化的情况……………………………………………………()5、圆柱的侧面展开一定是长方形或者正方形。
…………………()三、选择正确答案的序号填在括号里4%1、一幅地图,图上距离3厘米,表示实际距离是6000米,这幅地图的比例尺是()[①3:6000 ②1:200000 ③ ]2、单价一定,总价和数量成()[①正比例②反比例③不成比例]3、2002年是()[①闰年②平年]4、把12分解质因数是()[ ①12=3×4 ②12=2×2×3×1 ③12=2×2×3 ]四、计算36%1、直接写出得数:10% 100 - 24= 0.25×4= 2÷3= - = 96+4= ×1.2= 10÷ = 4- 1 = 810÷90= 1.8÷0.9=2、用简便方法计算4%3.25×4+6 × 4 4 -1 - 23、递等式计算12%400+450÷15×20 0.5×(35 - 7.8÷0.3)(12× - 2.5)÷ 9.6÷[32×(1 - )+36]4、解方程4%①6.8加上3 的和除以5,商是多少?②一个数的3倍加上3 的和是12.4,求这个数。
山东省菏泽市2007—2008学年度第二学期高三年级5月模拟(数学文科)
山东省菏泽市2007—2008学年度第二学期高三年级5月模拟数学(文)试题说明:本试题分第Ⅰ卷和第Ⅱ卷两部分,共12页,考试时间120分钟,满分150分.第Ⅰ卷注意事项:1.答第Ⅰ卷前,考生务必将姓名、准考证号、考试科目用钢笔和2B 铅笔写、涂在答题 卡. 2.选择题每小题选出答案后,用2B 铅笔把答题卡对应题目的答案标号涂黑,若需改动, 用橡皮擦干净后,再选涂其他答案,不准答在试卷面上.3.参考公式:锥体的体积公式是:sh V 31=,其中S 表示其底面积,h 为高. 一、选择题:本大题共12小题,每小题5分,共60分.在每小题给出的四个选项中只有一个选项是符合题意的,把正确选项的代号涂在答题卡上或填在和Ⅱ卷相应的空格内.1.设全集U 是实数集R ,},112|{},4|{2≥-=>=x x N x x M 则图中阴影部分所表示的集 合是( )A .}12|{<≤-x xB .}22|{≤≤-x xC .}21|{≤<x xD .}2|{<x x2.在△ABC 中,)3,2(),1,(,90==︒=∠k C ,则k 的值是 ( )A .5B .-5C .23 D .23-3.对于任意的直线l 与平面α,在平面α内必有直线m ,使m 与l ( ) A .平行 B .相交 C .垂直 D .互为异面直线 4.若0lg lg =+b a (其中1,1≡≠b a ),则函数xxb x g a x f ==)()(与的图象 ( ) A .关于直线y=x 对称 B .关于x 轴对称C .关于y 轴对称D .关于原点对称5.已知P 是以F 1、F 2为焦点的椭圆,0,)0(1212222=⋅>>=+PF PF b a b y a x 且上一点,21t a n21=∠F PF 则该椭圆的离心率为 ( )A .21 B .32 C .31 D .35 6.某人从甲地去乙地共走了500m ,途经一条宽为xm 的河流,该人不小心把一件物品丢在途中,若物品掉在河里就找不到,若物品不掉在河里,则能找到,已知该物品能被找到的概率为54,则河宽为 ( )A .80mB .100mC .40mD .50m7.曲线21)4cos()4sin(2=-+=y x x y 与直线ππ在y 轴右侧的交点按横坐标从小到大依次 记为P 1,P 2,P 3,……,则|P 2P 4|等于 ( ) A .π B .π2 C .π3 D .π48.一个空间几何体的正视图、侧视图、俯视图为全等的等腰直角三角形,如果直角三角形 的直角边长为1,那么这个几何体的体积为 ( ) A .1 B .21 C .31D .619.已知抛物线).0(22>=p px y 直线l 经过定点)20(),0,(p m m M <<且交抛物线于A 、B两点,则AOB ∠为( ) A .锐角 B .钝角C .直角D .锐角或直角10.函数)(x f y =是定义在R 上的增函数,)(x f y =的图象经过(0,-1)和下面哪一个点时,能使不等式}31|{1)1(1<<-<+<-x x x f 的解集为 ( )A .(3,2)B .(4,0)C .(3,1)D .(4,1)11.如果函数)1ln(2)(+-=x b a x f 的图象在1=x 处的切线l 过点(b1,0-),并且l 与圆C :,122相离=+y x 则点(a,b )与圆C 的位置关系是( )A .在圆内B .在圆外C .在圆上D .不能确定12.某地一年的气温)(t f (单位:℃)与时间t (月份)之间的关系如图所示,已知该年的平均气温为10℃,令g (t )表示时间段[0,t]的平均气温,g (t )与t 之间的函数关系用下列图象表示,则正确的应该是 ( )二、填空题:本大题共4个小题,每小题4分,共16分,将答案填在Ⅱ卷相应题号的空格内.13.某市高三数学抽样考试中,对90分以上(含90分)的成绩进行统计,其频率分布图如图所示,若130—140分数段的人数为90人,则90—100分数段的人数 .14.已知函数)(),(),2sin(2)(,sin 2)(x g x f m x x x g x x f 与直线=-==π的图象分别交M 、N 两点,则|MN |的最大值为 . 15.设)(x f 是以2为周期的奇函数,且)2cos 4(,55sin ,3)52(ααf f 则若==-的值等于.16.已知点P (x,y )的坐标满足AOP A x y x y x ∠⎪⎩⎪⎨⎧≥-≤+≤+-cos ||),0,2(,012553034则设(O 为坐标原点)的最大值为 .三、解答题:本大题共6个小题,满分74分,解答时要求写出必要的文字说、证明过程或推演步骤. 17.(本小题满分12分)在△ABC 中a 、b 、c 分别是角A 、B 、C 的对边,.0),cos ,(cos ),,2(=⋅=+=n m C B n b c a m 且(1)求角B 的大小;(2)设)()(,2cos 23)cos(cos sin 2)(x f x f x C A x x x f 的周期及当求-+=取得最大值时的x 的值.18.(本题满分12分)如图,在三棱锥P —ABC 中,E 、F 、G 、H 分别是AB 、AC 、PC 、BC的中点,且P A=PB ,AC=BC 、 (1)证明:AB ⊥PC ; (2)证明:PE//平面FGH19.(本小题满分12分)已知函数)6(),2(),0(),(log )(2f f f m x x f 且+=成等差数列. (1)求)30(f 的值;(2)若a ,b ,c 是两两不相等的正数,且a ,b ,c 成等比数列,试判断)()(c f a f +与)(2b f的大小关系,并证明你的结论.20.(本小题满分12分)某厂家拟在2006年举行促销活动,经调查测算,该产品的年销售量(即该厂的年产量)x 万件与年促销费用m 万元(m ≥0)满足13+-=m kx (k 为常 数),如果不搞促销活动,则该产品的年销售量只能是1万件.已知2006年生产该产品的 固定投入为8万元,每生产1万件该产品需要投入16万元,厂家将每年产品的销售价 格定为每件产品年平均成本的1.5倍(产品成本包括固定投入和再投入两部分资金,不 包括促销费用).(1)将2006年该产品的利润y 万元表示为年促销费用m 万元的函数; (2)该厂家2006年的促销费用投入多少万元时,厂家的利润最大?21.(本题满分12分)如图,椭圆的方程为)0(122222>=+a ay a x ,其右焦点为F ,把椭圆的长轴分成6等分,过每个点作x 轴的垂线交椭圆上半部于点P 1,P 2,P 3,P 4,P 5五个点, 且|P 1F|+|P 2F|+|P 3F|+|P 4F|+|P 5F |=52.(1)求椭圆的方程;(2)设直线l 过F 点(l 不垂直坐标轴),且与椭圆交于A 、B 两点,线段AB 的垂直平分线交x 轴于点M (m,0),试求m 的取值范围.22.(本题满分14分)已知函数,0)0(),,(4131)(23=∈++-=f R d c a d cx x ax x f 满足 R x f f 在且0)(',0)1('≥=上恒成立.(1)求d c a ,,的值; (2)若;0)()(',41243)(2<+-+-=x h x f b bx x x h 解不等式 (3)是否存在实数m ,使函数]2,[)(')(+-=m m mx x f x g 在区间上有最小值-5?若存在,请求出实数m 的值;若不存在,请说明理由.山东省菏泽市2007—2008学年度第二学期高三年级5月模拟参考答案一、选择题CACCD BADBD AD 二、填空题 13.810 14.22 15.-3 16.5三、解答题 17.解:(1)由0cos cos )2(,0=++=⋅C b B c a n m 得0cos cos cos 2=++∴c b B c B a由正弦定理,得0sin cos cos sin cos sin 2=++B C B C B A ………………3分即0)sin(cos sin 2=++B C B A0)1cos 2(sin =+∴B A在0sin ,≠∆A ABC 中01cos 2=+∴B.32π=∴B ……………………6分(2)因为,32π=B3π=+∴C A)32sin(2cos 232sin 21)(π-=-=∴x x x x f ………………8分 ∈+=-∴k k x x f ,2232)(ππππ令的周期为 ,得125ππ+=k x (∈k ) 即当时125ππ+=k x (k ∈ )时)(x f 取最大值.……………………12分 18.解:(1)证明:连接EC ,AB EC ⊥有………………2分又,PB PA =PE AB ⊥∴………………4分PEC PC PEC AB 面面⊂⊥∴,PC AB ⊥∴(2)连结FH ,交于EC 于R.连接GR .在.//,PE GR PEC 中∆………………9分..FHG GR FHG PE 面⊂⊄.//FHG PE 面∴……………………12分19.解:(1)由得成差数列,)6(),2(),0(f f f)0)(6()2(),6(log log )2(log 22222>+=+++=+m m m m m m m 即2=∴m 得…………………………………………………………4分5)230(log )30(2=+=∴f …………………………6分(2)),2)(2(log )()(,)2(log )2(log 2)(22222++=++=+=c a c f a f b b b f,2ac b =又b c a b b c a ac b c a 4)(2444)(2)2()2)(2(22-+=---++==+-++∴…………9分4)(2)(22>-+∴≠=>+b c a c a b c a c a)(2)()(,)2(log )2)(2(log 222b f c f a f b c a >++>++∴即………………12分20.解(1)由题意可知当0=m 时,1=x (万件),231=-=∴k k 即………………2分123+-=∴m x 每件产品的销售价格为x x1685.1+⨯(元)……………………4分 )168(]1685.1[2006m x x xx y ++-+⨯=∴年的利润………………6分m n m x -+-+=-+=)123(8484……………………8分)0(29)]1(116[≥++++-=m m m(2),8162)1(116,0=≥+++≥m m m 时 ……………………10分 31116,21298=⇒+=+=+-≤∴m m m y 当且仅当(万元)时,21max =y (万元)……………………11分所以该厂家2006年的促销费用投入3万元时,厂家的利润最大,最大值为21万元…………12分21.解:(1)由题意,知.,3251轴对称分别关于与与y P P P P 设椭圆的左焦点为F 1,则|P 1F |+|P 5F |=|P 1F |+|P 1F 1|=2a ,同时|P 2F |+|P 3F |=2a 而|P 3F |=a ∴|P 1F |+|P 2F |+|P 3F |+|P 4F |+|P 5F |=5a =522=∴a1222=+∴y x 椭圆方程为…………………………6分(2)由题意,F (1,0),设l 的方程为)0)(1(≠-=k x k y1222=+y x 代入椭圆方程为整理,得0224)21(2222=-+-+k x k x k……………7分因为l 过椭圆的右焦点,.,B A l 与椭圆交于不同的两点∴设),(),,(),,(002211y x AB y x B y x A 中点为,则12)1(,122)(21,21420022*******+-=-=+=+=+=+k kx k y k k x x x k k x x …………9分)(100x x ky y AB --=-∴的垂点平分线方程为令2222222001211212122,0kk k k k k k ky x m y +=+=+-+=+==得由于012>k ,2122>+∴k.210<<∴m …………………………12分22.解:(1),0)0(=f0=∴d21,0)1('21)('2=+=+-=∴c a f c x ax x f 有及 021,0)('2≥+-≥c x ax R x f 即上恒成立在 恒成立即021212≥-+-a x ax 恒成立……………………2分显然0=a 时,上式不能恒成立a x ax x f a -+-='≠∴2121)(,02函数是二次函数由于对一切,0)(,≥'∈x f R x 都有于是由二次函数的性质可得⎪⎩⎪⎨⎧≤--->.0)21(4)21(,02a a a41:0)41(,0016121,022=⎪⎩⎪⎨⎧≤->⎪⎩⎪⎨⎧≤+->a a a a a a 解得即 41==c a ………………………………4分 (2).41==c a .412141)(2+-='∴x x x f 041243412141,0)()(22<-+-++-<+'∴b bx x x x x h x f 即由 即0)21)((,02)21(2<--<++-x b x b x b x 即………………6分 当)21,(,21),,21(,21b b b b 解集为时当解集为时<> 当ϕ解集为时,21=b ……………………………………8分 (3),41==c a 412141)(2+-='∴x x x f .41)21(41)()(2++-=-'=∴x m x mx x f x g 该函数图象开口向上,且对称轴为.12+=m x假设存在实数m 使函数41)21(41)()(2++-=-'=x m x mx x f x g 区间]2.[+m m 上有最小值-5.①当]2,[)(,12,1+<+-<n m x g m m m 在区间函数时上是递增的..541)21(41,5)(2-=++--=∴m m m m g 即 解得.373=-=m m 或 ,137-> 37=∴m 舍去.………………10分 ②当]12,[)(,212,11++<+≤<≤-m m x g m m m m 在区间函数时上是递减的,而在区间]2,12[++m m 上是递增的,.5)12(-=+∴m g 即541)12)(21()12(412-=+++-+m m m 解得均应舍去或,212121212121+-=--=m m ………………12分 ③当1≥m 时,]2,[)(,212++≥+m m x g m m 在区间函数上递减的 5)2(-=+∴m g 即.541)2)(21()2(412-=+++-+m m m 解得221.221221--+---=m m m 其中或应舍去. 综上可得,当2213+-=-=m m 或时,函数.5]2,[)()(-+-'=上有最小值在区间m m mx x f x g ………………14分。
和平学校初2007级上学期期末模拟题(证明二---二次函数止)
ABCD O成都高新区初2007级期末模拟题 (和平学校初三数学组命制、成都高新区教研室任炯审核)A 卷(100分)一、选择题。
(每题3分,共30分)1、tan600=( ) A .21 B.23 C.33 D. 32、既是轴对称,又是中心对称图形的是 ( )A .矩形B .平行四边形C .正三角形D .等腰梯形 3、正方形具有而菱形不具有的性质是( )A 对角线互相垂直B 对角线互相平分C 对角线相等D 对角线平分一组对角4、在同一时刻的阳光下,小明的影子比小强的影子长,那么在同一路灯下( ) A .小明的影子比小强的影子长 B.小明的影长比小强的影子短 C.小明的影子和小强的影子一样长 D.无法判断谁的影子长5、下面是空心圆柱体在指定方向上(从正面看)的视图,正确的是( )6、函数xy 1=与函数x y =的图象在同一平面直角坐标系内的交点个数是( ) A. 1个B. 2个C. 3个D. 4个7、二次函数c bx ax y ++=2的图象如图3,则点),(ac b 在( )A. 第一象限B. 第二象限C. 第三象限D. 第四象限8、三角形两边的长分别为3和6,第三边是方程0862=+-x x 的解,则该三角形的周长是( )A. 11B. 13C. 11或13D. 11和159、如果矩形的面积为6cm 2,那么它的长y cm 与宽x cm 之间的函数关系用图象表示大致 ( )10ABCD 中,对角线AC 和BD 相交于点O ,如果AC =12, BD =10,AB =m ,那么m 的取值范围是 ( )A .111<<mB .222<<mC .1210<<mD .65<<m二、填空。
(每题4分,共20分)11、抛物线542+-=x x y 的顶点坐标是 。
对称轴是 。
12、反比例函数xy 3-= 的图像在各象限内的分支是函数值y 随x 的减小而 。
实验中学初2007级上学期期末模拟题(证明二---二次函数止)
DCBA成都高新区初2007级期末模拟题(成都高新实验中学初三数学组命制、成都高新区教研室任炯审核)A 卷共100分一、选择题 (每题3分,共30分)1、Rt △ABC 中,∠C=900,锐角∠A 为30o,最短边长为5cm ,则最长边上的中线是( )A 、5cmB 、15cmC 、10cmD 、2.5cm2、在四边形ABCD 中,O 是对角线的交点,能判定这个四边形是正方形的是( )(A )AC = BD ,AB ∥CD ,AB = CD (B )AD ∥BC ,∠ A =∠ C ( C )AO=BO=CO=DO ,AC ⊥BD ( D ) AO=CO ,BO=DO ,AB=BC 3、到△ABC 的三个顶点距离相等的点是△ABC 的( ) A.三边中线的交点 B.三条角平分线的交点 C.三边上高的交点 D.三边垂直平分线的交点4、如图,△ABC 中,∠ACB =090,BE 平分∠ABC ,DE ⊥AB , 垂足为D ,如果AC = 12cm ,AD=8cm ,那么△ADE 的周长为( ) A 22cm B 17 cm C 20 cm D 18 cm5、如图在Rt △ABC 中, ∠ACB=90°,CD ⊥AB ,D 为垂足,若AC=4,BC=3, 则sin ∠ACD 的值为( )。
(A)34 (B) 43 (C) 54 (D) 536、某厂今年3月的产值为50万元,5月份上升到72万元,这两个月平均每月增长的百分率是多少?若设平均每月增长的百分率为x ,则列出的方程正确的是( ) A 、50(1+x )=72 B 、50(1+x )+50(1+x )2=72 C 、50(1+x )×2=72 D 、50(1+x )2=72 7、如果反比例函数y =xk 的图象经过点(2,-3),那么k 的值为( )A 、-6B 、6C 、-32 D 、23-8、方程ax 2=bx (a ≠0)的解是( ) A. x=0; B. x=ab C. x=0或x=ab ; D. x=-ab9、物体在太阳光的照射下,不同的时刻会发生的现象是( )A 、影子的大小不变,方向在变B 、影子的大小在变,方向不变C 、影子的大小在变,方向也在变D 、影子的大小、方向都不变10、4.如图,图中的两个转盘分别被均匀地分成5个和4个扇形,每个 扇形上都标有数字,同时自由转动两个转盘,转盘停止后,指针都落在奇数上的概率是( )A 、25B 、310C 、320D 、15二、填空题(每题4分,共20分)11、菱形的一条对角线长是6cm ,周长是20cm ,则菱形的面积是 cm 2。
2007年春九年级数学第二次模拟试卷
A BC 第5题图2007年春九年级数学第三次模拟试卷(考试形式:闭卷 全卷共五大题25小题 卷面分数:120分 考试时限:120分钟) 考生注意:1.本试卷分为两卷,解答第I 卷时请将解答结果填写在第II 卷指定的位置,否则答案无效,交卷时只交第II 卷. 2.答卷时允许使用科学计算器.以下公式供参考:二次函数y =ax 2+bx +c 图象的顶点坐标是)44,2(2ab ac a b --.第Ⅰ卷(选择题、填空题 共45分)一、选择题.(本大题共10小题,每小题3分,共30分)在每小题给出的四个选项中,只有一项是符合题目要求的,请将符合要求的选项前面的字母代号填写在第Ⅱ卷上指定的位置.1、 -2的绝对值是( ) A 、2 B 、21 C 、-2 D 、-212、下列各式中运算正确的是( ) A.()523x x = B.()()22b a a b b a -=-+ C.23522=-y x y x D.65x x x =⋅3、计算28-的结果是( ) A 、6 B 、2 C 、2 D 、1.44、在一个不透明的口袋中,装有12个除颜色外都相同的球,如果摸到红球的概率为13 ,那么口袋中红球的个数为( )A 、1B 、2C 、3D 、45、如图,身高为1.6米的小华想测量学校旗杆的高度,当他站在C 处时, 他头顶端的影子正好与旗杆顶端的影子重合,测得AC=2.0米,BC=8.0米, 则旗杆的高度是( )A 、6.4米B 、7.0米C 、8.0米D 、9.0米6、据媒体报道,我国因环境污染造成的巨大经济损失,每年高达680000000元,这个数用科学记数法表示正确的是( )A 、 6.8 ⨯ 109元 B 、 6.8 ⨯ 108元 C 、 6.8 ⨯ 107元D 68 ⨯ 106元7、如图所示,在边长为a 的正方形中挖去一个边长为b 的小正方形(a>b ),再把剩余的部分剪拼成一个矩形,通过计算图形(阴影部分)的面积,验证了一个等式是( )A 、()()b a b a b a -+=-22B 、()2222b ab a b a ++=-C 、()2222b ab a b a +-=- D 、()()2222b ab a b a b a -+=-+ab aba b bb8、木工师傅在做完门框后,为防止变形常常像图中所示那样钉上两条斜拉的木板条(即图中的AB 和CD ),这样做的根据是( )A 、矩形的对称性B 、矩形的四个角都是直角C 、三角形的稳定性D 、两点之间线段最短9、数学老师布置了10道填空题作为课堂练习, 课代表将全班同学的答题情况绘制成条形统计 图,根据此图可知同学答对的题数所组成样本 的中位数和众数分别为( )A 、 13、20B 、9、8C 、 8、8D 、8、910、函数y = kx + 1与函数xky在同一坐标系中的大致图象是( )(A ) (B ) (C ) (D )二、填空题.(本大题共5小题,每小题3分,共15分)请将下列各题的答案填写在第Ⅱ卷上指定的位置.11、小红家为购买化肥、农药,共支出了200元记作-200元,那么小红家卖出农产品若获得的收入800元应记作:12、如图,是用一张长方形纸条折成的。
2007年3月公共英语考试三级模拟试题及答案一
2007年3 月公共英语考试三级模拟试题及答案一Section I Listening Comprehension (25 minutes) (略)Secti on n Use of En glish (15 minu tes)Directions:Read the following text. Choose the best word or phrase for each numbered blank and mark A, B,C, or D on your ANSWER SHEET 1.TextWhat do we mean by a perfect English pronunciation? In one 26 there are as manydifferent kinds of English as there are speakers of it. 27 two speakers speak inexactly the same 28 . We can always hear differences 29 them, and the pronunciationof English 30 a great deal in different geographical 31 . How do we decide what sort of English to use as a 32? This is not a question that can be 33 in the same way forall foreign learners of English. 34 you live in a part of the world 35 India for West Africa, where there is a long 36 of speaking English for general communication purpose, you should 37 to acquire a good variety of the pronunciation of this area. It wouldbe 38 in these circumstances to use as a model BBC English or 39 of the sort. On the other hand, if you live in a country 40 there is no traditional use of English, you must take 41 your model some form of 42 English pronunciation. It does not 43 very much which form you choose. The most 44 way is to take as your model the sort of English you can 45 most often.26.A.meaning B. Sense C.case D. situation27.A.NotB.NoC. NoneD.NorA. typeB.FormC.sortD.way29.A. betweenB.AmongC.ofD.30.A. changesB. variesC. shiftsD. alters31.A. areasB.parts C.D. spaces32.A. directionB. guideC. symbolD. model33.A. givenB.C. satisfiedD. answered34.A. BecauseB.WhenC.IfD.WhetherA.35.B.inC.likeD.near36.A. customB.useC. traditionD.habitA.aimB. proposeC.select D.tend38.A. fashionB. mistakeC. nonsenseD.possibility39.A. everythingB. nothingC. anythingD.things40.A.where B.thatC.which D. wherever41.A.toB.withC.onD.as42.A. practicalB.C. nativeD. new43.A. careB. affectC. troubleD. matter44.A.B. sensitiveC. ordinaryD. careful45.A.listen B.hear C. notice D.findSection n Reading Comprehension(40 minutes)Part ADirections:Read the following three texts. Answer the questions on each text by choosingA, B, C or D. Mark your answers on the ANSWER SHEET by drawing a thick line across the corresponding letter in the brackets.Text 1After a busy day of work and play, the body needs to rest. Sleep is necessary for good health. During this time, the body recovers from the activities of the previous day. The rest that you get while sleeping enables your body to prepare itself for the next day.There are four levels of sleep, each being a little deeper than the one before.As you sleep, your muscles relax little by little. Your heart beats more slowly, and your brain slows down. After you reach the fourth level, your body shifts back and forth from one level of sleep to the other.Although your mind slows down, from time to time you will dream. Scientists who study sleep state that when dreaming occurs, your eyeballs begin to move more quickly (Although your eyelids are closed). This stage of sleep is called REM, which standsfor rapid eye movement.If you have trouble falling asleep, some people recommend breathing very deeply. Other people believe that drinking warm milk will help make you drowsy. There is also an old suggestion the counting sheep will put you to sleep!46 A good title for this passage is ___ .A. Sleep C. DreamsB. Good Health D. Work and Rest47. The word drowsy in the last paragraph means _ .A. sick C. asleepB. stand up D. a little sleepy48. This passage suggests that not getting enough sleep might make you ___ .A. dream more often C. nervousB. have poor health D. breathe quickly49. During REM, __ .A. your eyes move quickly C. you are restlessB. you dream D. both A and B50. The average number of hours of sleep that an adult needs is ____ .A. approximately six hours C. about eight hoursB. around ten hours D. not stated hereText 2Obviously television has both advantages and disadvantages.In the first place, television is not only a convenient source of entertainment, but also a comparatively cheap one. With a TV set in the family people don't have to pay for expensive seats at the theatre, the cinema, or the opera .All they haveto so is to push a button or turn a knob, and they can see plays, films, operas and shows of every kind. Somepeople, however, think that this is where the danger lies. The television viewers need do nothing. He does not even have to use his legs if the has a remote control. He makes no choice and exercises, no judgment. He is completely passive and has everything presented to him without any effort in his part.Television, it is often said, keeps one informed about current events and the latest developments in science and politics. The most distant countries and the strangest customs are brought right into one's sitting room. It could be argued that the radio performs this service as well; but on television everything is much more living, much more real. Yet here again there is a danger. The television screen itself has a terrible, almost physical charm for us. Weget so used to looking at the movements on it ,so dependent on its pictures, that it begins to control our lives. People are often heard to say that their television sets have broken down and that they have suddenly found that they have far more time to do things and the they have actually begin to talk to each other again. It makes one think, doesn't it?There are many other arguments for and against television. Wemust realize that television itself is neither good nor bad. It is the uses that it is put to that determine its value to society.51. What is the major function of paragraph 1?A. To arouse the reader's concernB. To introduce the theme of the whole passageC. To summarize the whole passageD. To sate the primary uses of TV52. Television, as a source of entertainment, is ____ .A. not very convenientB. very expensiveC. quite dangerousD. relatively cheap53. Why are some people against TV?A. Because TV programs re not interestingB. Because TV viewers are totally passiveC. Because TV prices are very high.D. Because TV has both advantages and disadvantages54. One of the most obvious advantages of TV is that _____A. it keeps us informedB. it is very cheapC. it enables us to have a restD. it controls our lives55. According to the passage, whether TV is good or not depends on _____A. its qualityB. people 's attitude towards itC. how we use itD. when we use itText 3Too often young people get themselves employed quite by accident, not knowing what lies in theway of opportunity for promotion, happiness and security.leavers face so much competition that they seldom care what they do as long as they As a result,they are employed doing jobs that afford them little or no satisfaction. Our schoolcan earn a living . Some stay long at a job and learn to like it ;others quite fromone to another looking for something to suit them, the young graduates who leave the university look for jobs that offer a salary up to their expectation. Very few go out into the world knowing exactly what they want and realizing their own abilities. The reason behind all this confusion is that there never has been a proper vocational guidance in our educational institution. Nearly all grope(摸索) in the dark and their chief concern when they look for a job is to ask what salary is like. They never bother to think whether they are suited for the job or, even more important, whether the job suits them, Having a job is more than merely providing yourself and your dependants with daily bread and some money for leisure and entertainment, It sets a pattern of life and, in many ways, determines social status in life, selection of friends, leisure and interest.In choosing a career you should first consider the type of work which will suit your interest .Noting is more pathetic than taking on a job in which you have no interest, for it will not only discourage your desire to succeed in life but also ruin your talents and ultimately make you an emotional wreck (受到严重伤害的人)anda bitter person.56. The reason why some people are unlikely to succeed in life is that they ______________ .A. have ruined their talentsB. have taken on an unsuitable jobC. think of nothing but their salaryD. are not aware of their own potential57. The difficulty in choosing a suitable job lies mainly in that __ .A. much competition has to be facedB. many employees have no working experienceC. the young people only care about how much they can earnD. schools fail to offer students appropriate vocational guidance58. Which of the following statements is most important according to the passage?A. Your job must suit your interest.B. Your job must set a pattern of life.C. Your job must offer you a high salary.D. Your job must not ruin your talents.59. __________________________________ The best title for this passage would beA. What Can A Good Job OfferB. Earning A LivingC. Correct Attitude On Job-huntingD. How To Choose A Job60. The word "pathetic"in paragraph 2 most probably means __A. splendidB. miserableC. disgustedD. touchingPart BDirections:The 12,000 membersof the Electricity Workers' Union on strike last week and since then there has been no electricity. For question 61-65, match the names with the statements below. Mark your answers on ANSWER SHEET 1.Mr. Mike Smith:It wasn't an easy decision, but we've been asking for a decent wage for years.Now at last people are beginning to listen to us. We're only asking for a 25 percent increase in our wages. 250 dollars a week. That's all. It's pity so many people have to be inconvenienced by out strike. But please don't blame us. Blame the governmentfor refusing our claim.Mr. Tom Brown:It's totally unreasonable to demand so much money when we are trying desperately to control inflation. If wages go up, so do prices. If we gave in to the electricity workers, all the other unions would want more, with the inevitable result that the crisis would become uncontrollable. What we're trying to impress upon everybody is that inflation hurts everybody, especially the poor people. Weoffer the electricity workers a 10 percent increase. And that's already too much. My stand at this meeting will be to persuade the Union to see reason.Mr. Bob Davis:Everybody will be hurt by this strike, including the electricity workers themselves. The economy will be destroyed and many people will lose their jobs. Already people are saying that the big unions have too much power and shouldn't be allowed to strike. O course the electricity want to get more money. Don't we all?Mr. Baker:My opinion is "Get the Army in". All the power stations should be managed by the army. The strikers should be thrown into prison. That's what this country needs. Why must we all suffer just because a few men are greedy? If they don't like their jobs, nobody 's forcing them to work. They should try and live on 50 dollars a week likeI have to. Perhaps they'd keep their mouths shut then.Miss Slater:Let's face it. It's neither here nor there. The electricity workers are in a strong position. Perhaps we can't do anything bout it. What I say is: let them have their 250 dollars so we can return to work. I mean, the government wastes the taxpayers' money all the time on trivial things. How can anyone say 250 dollars is "too much"?Pop singers get more. Nurses get less. It's just one of those things.Now match each of the persons (61 to 65) to the appropriate statement.Note: there are two extra statements.Statements61. Mr. Mike Smith62. Mr. Tom Brown63. Mr. Bob David64. Mrs. baker65. Miss Slater[A] A % increase is already too much, and I'm here to persuade the Union to see reason.[B] I hope that strikes should be banned in all sectors relating to the nation's security and stability.[C] We will never go back to work until our goals are achieved.[D] I think that the government should give in to the electricity worker's demands.[E] I strongly suggest that all the power stations should be run by the army and that the strikers should be put into prison.[F] I must take you clear that strikes will destroy the economy and that many people will lose their jobs.[G] Weare forced to call a strike because the government rejected our wage claim.Section IV Writing (40 mi nutes)You should write your responses to both Part A and Part B of this section on ANSWER SHEET 2.Part A66. Write a letter to a publishing house asking for information on a book about American culture. Your letter should include:1. the name of the book2. the price of the book3. the discount of group orderYou should write approximately 100 words. Do not sign your own name at the end of the letter. Use "Li Ping' instead. You do not need to write the address.Part BFor this part, you are required to write a composition approximately 120 words entitled Advertisement. You are advised to arrange your idea in three paragraphs withkeys words for each paragraph given. The following are the word must use in your composition.Keywords: criticism, advertise, important, development, newspaper, TV, information, product, customer, manufacture, TV station, money, poor, quality, can't sell well, too many答案与题解:1-25 (略)26. B in one sense: 在某种意义上,固定用法。
2007年新目标(九年级)中考模拟测试1
2007人教版(新目标)九年级中考模拟试题1一、单项选择。
(每小题1分,共20分)1. Guilin is a city____________ a lot of beautiful natural scenery.A. ofB. forC. withD. in2. How time flies! Ten years____________ passed.A. haveB. hasC. isD. are3. —Don’t make any noise in the living room! My baby is sleeping.—__________.A. Sorry, I won’tB. It doesn’t matter.C. Excuse me, I’m wrongD. Certainly, I won’t4. The person to_________ you just talked is Mrs Brown.A. whoseB. ifC. whomD. that5. The train____________ for ten minutes.A. has goneB. has leftC. has been awayD. has been6. Joy is____________ sister.A. Mary and JackB. Mary’s and Jack’sC. Mary’s and JackD. Mary and Jack’s7. I need some money to buy gifts____________ my family.A. forB. atC. toD. in8. Yesterday he spent about an hour______________ his homework.A. with doingB. on doingC. inD. on9. — Mom, this fish is quite delicious.—_____________A. Thanks. I’m very glad you like it.B. Really?C. I don’t think you like it.D. No, no, it’s not delicious.10. Both David and I____________ engineers.A. amB. isC. areD. he11. —How long has your uncle had that big house?—____________ 1997.A. InB. SinceC. ForD. After12. _________ we are very young, _____________ we can speak English well.A. Though; butB. Because ; soC. Though; /D. Because; /13. My neighbour took care of my pet while we ___________ for holidays.A. leftB. went outC. were awayD. went away14. Our sports meeting has been_____________ till next Monday because of the bad weather.A. put onB. put upC. put offD. put down15. —How long will you be there?—For_____________.A. one year and one halfB. one and a half yearC. a year and one halfD. one year and a half16. —Who taught__________ English last term? Was __________ Mr. Smith?—________ Mr. Smith?—No. Miss White did.A. you; itB. you; beC. your; itD. your; that17. —Can I help you?—Yes. I’d like a ticket to Mount Emei. Can you tell me_________ take to et there?A. how soon will itB. how soon it willC. how long it willD. how long will it18. It’s really not easy to catch up with my classmates. Whenever Iwanted to_______, my teacher always encouraged me to work harder.A. go onB. turn downC. give backD. give up19. I won’t believe that the five-year-old boy can read five thousandwords___________ I have tested him myself.A. afterB. whenC. ifD. until20. The doctor__________ the child carefully and found that there wasnothing serious with him.A. looked overB. looked atC. looked afterD. looked for二、完形填空。
九年级历史模拟试题
2007级中考历史模拟试题(二)一、单选:(每题1分,共20分)1、恩格斯说:“这是一次人类历史从来没有经历过的最伟大的、进步的变革,是一个需要巨人而且产生了巨人——在思维能力、热情和性格发方面,在多才多艺和学识渊博方面的巨人的时代。
”其中最“伟大的、进步的变革”是指A、英国的“光荣革命”B、血与火的殖民扩张C、第一次工业革命D、文艺复兴运动2、欧洲文艺复兴运动的指导思想是A、人文主义B、启蒙思想C、社会主义D、宗教神学3、人们常常把工作、学习中取得重大突破称之为“发现了新大陆”,在新航路开辟的过程中,哥伦布发现的“新大陆”就是今天的A、亚洲B、非洲C、美洲D、大洋洲4、揭开英国资产阶级革命序幕的历史事件是A、1640年查理一世重开议会B、1642年查理一世挑起内战C、1649年英国宣布为共和国D、1688年“光荣革命”5、英国《权利法案》颁布的重要意义在于A、结束了英国资产阶级革命B、为限制王权提供了法律保障C、英国建立起君主专制制度D、推翻了斯图亚特王朝的统治6、列宁说:“现代的文明的美国历史,是由一次伟大的、真正解放的、真正的战争开始的。
”这场战争开始的标志是A、波士顿倾茶事件B、列克星顿枪声C、萨拉托加战役D、约克镇战役7、假如你要探究法国资产阶级革命初期反对君主专制和封建等级制度的思想,最值得参考的历史文献是A、《人权宣言》B、《权利法案》C、《法典》D、《独立宣言》8、“我希望美洲人民永远不再把国王的宝座搬到自己的土地上来。
”“解放者的称号已经高于一切,因此我决不会降低身份去登上王位。
”请你判断说这番话的人应是A、圣马丁B、玻利瓦尔C、比德罗D、伊达尔哥9、早在100多年前,环境污染就开始严重困扰人类社会,这一现象的出现,与哪一个历史事件密切相关A、新航路的开辟B、工业革命C、欧洲殖民扩张D、资产阶级革命10、“五一”长假到了,小名高兴地打电话给同学,约同学一起去九寨沟旅游。
小名的这一活动与下列哪一位人物的科学发明有关A、爱迪生B、史蒂芬孙C、卡尔·本茨D、贝尔11、美国内战“扫除了资本主义发展的又一障碍”,这“又一障碍”指的是A、英国的殖民统治B、黑人奴隶制度C、领土面积狭小D、关税自主权12、在一次历史活动课上,小燕向全班同学介绍了俄国1861年改革。
2007年杨浦区高三学科模拟测试
2007年杨浦区高三学科模拟测试地 理 试 卷本试卷共11页。
满分150分。
考试时间120分钟。
全卷包括两大题,第一大题为选择题,第二大题为综合分析题。
考生注意:1.答卷前,务必在试卷和答题卡上将姓名、准考证号等填写清楚,并用2B 铅笔在答题卡上正确涂写准考证号码和校验码。
2.第一大题由机器阅卷,答案必须全部涂在答题卡上。
考生应将代表正确答案的小方格用2B 铅笔涂黑。
注意试题题号与答题卡编号一一对应,不能错位。
答案需要更改时,必须将原选项用橡皮擦去,重新选择。
答案不能写在试卷上,写在试卷上一律不给分。
3.第二大题采用人工阅卷。
考生应用钢笔或圆珠笔将答案直接写在试卷上,写在答题卡上一律不给分。
所有考生应完成本大题共同部分试题,选择部分分为A 、B 两组,两组试题分值相同,A 组试题适合使用“二期”课改教材的考生,B 组试题适合使用“一期”课改教材的考生,考生可以任选一组答题,但不能交叉答题,如果考生交叉答题,只对A 组的应答进行评分。
一、选择题(共40分,每小题2分。
每小题只有一个正确答案 )读下列图文资料完成第1~4题。
国际天文学联合会大会通过的决议规定,“行星”是指一个天体,它满足(a)围绕太阳运转,(b)有足够大的质量来克服固体应力以达到流体静力平衡的(近于圆球)形状,同时(c)清空了所在轨道上的其他天体。
在太阳系传统的“九大行星”中,冥王星由于不符合新的行星定义,因此被自动降级为“矮行星”。
1.冥王星被降级为“矮行星”的原因是-------------------------------------( )A .冥王星不围绕太阳运转B .冥王星自身引力不能使其呈圆球状2.目前,太阳系八大行星的叙述,正确的是-------------------------------------------------()A.D和E属于类地行星B.质量和体积最大的行星是FC.卫星数最多的行星是H D.平均密度最大的是C3.读“太阳系示意图”,太阳系中的小行星带分布在------------------------------------()A.B和C之间B.D和E之间C.E和F之间D.G和H之间4.地球成为太阳系中有生物的特殊行星,是因为------------------------------------------()A.地球所处的光照条件不断变化B.地球有自转和公转运动,天体运动相互影响C.地球与太阳的距离适中,使地表具有适宜的温度D.地球体积大小合适,使水以液体形态存在5.下列我国少数民族自治区中,既不临海又不与邻国接壤的是--------------------------()A.宁夏回族自治区B.新疆维吾尔自治区C.广西壮族自治区D.西藏自治区6.下列山脉中,横亘于高原和盆地两种地形之间的山脉是--------------------------------()A.大兴安岭B.昆仑山C.太行山D.天山7.下列气候类型中,我国缺失的气候类型是--------------------------------------------------()A.温带大陆性气候B.热带季风气候C.地中海气候D.高原山地气候8.我国资源空间分布不平衡的主要原因是----------------------------------------------------()A.各地经济发展不平衡B.各地对资源利用需求量的不平衡C.各地地形、气候、水文等自然条件的差异D.各地重点产业发展的不平衡9.我国四大工业基地的共同特点是-------------------------------------------------------------()A.区内均有丰富的矿产资源B.均以外向型经济为主C.均是轻重工业并举的综合性工业基地D.均位于我国的东部沿海地带10.日本和印度尼西亚两国共同的地理特征是-----------------------------------------------()A.季风气候显著B.地形以高原、盆地为主C.多火山、地震D.沿海平原面积广大11.关于鲁尔工业区的叙述,正确的是----------------------------------------------------------()A.属于“煤铁复合体型”工业布局B.主要工业部门有宇航、微电子等C.位于易北河沿岸地区D.埃森、汉堡等是该工业区主要工业中心12.我国当前人口迁移的主要方向是-----------------------------------------------------------()A.由农村到边疆B.由农村到城市C.由城市到农村D.由城市到边疆13.下列关于喜马拉雅山形成时期的叙述,正确的是----------------------------------------()A.原始生命萌芽时代B.蕨类植物大发展时代C.重要的石油生成时期D.恐龙盛行时代14.衡量城市化水平最重要的标志是----------------------------------------------------------()A.城市人口和用地规模B.城市人口在总人口中所占的比重C.制造业、服装业、交通运输业发达程度D.大、中、小城市数目15.属于在新的原料、燃料基础上形成的新兴工业中心的是-------------------------------()A.英国的阿伯丁B.法国的敦刻尔克C.俄罗斯的圣彼得堡D.意大利的都灵16.如果地球只有公转运动而没有自转运动,则下列现象正确的是---------------------()A.地球上没有昼夜更替现象B.地球上各地的地方时不会发生变化C.水平运动的物体不会发生偏向D.地球上各地的太阳高度不会发生变化17.在亚欧大陆上,发生低温、水灾、旱灾等气象灾害最为频繁的地区是----------------()A.中亚内部地区B.东亚季风地区C.青藏高原地区D.西亚沙漠地区18.以下关于工业布局的叙述,正确的是--------------------------------------------------------()A.在山西的煤田附近建立坑口火电厂B.在大兴安岭林区建立家具厂C.在上海郊区建立制糖厂D.在克拉玛依油田附近建立炼油厂19.煤、石油、天然气、水能和生物能作为能源的共同特点是--------------------------------()A.都是当代世界最主要的能源B.都是可再生的能源C.都属于新能源D.都是来自太阳能的能源20.由于洋流的影响,使太平洋某海区等温线向南凸出,而且等温线的数值愈往南愈低,该洋流可能是---------------------------------------------------------------------------------------------()A.日本暖流B.加利福尼亚寒流C.秘鲁寒流D.东澳大利亚暖流二、综合分析题(共110分)第(一)至(六)题为共同部分(一)读图甲和图乙两幅地理简图,并回答问题。
玉林校区初2007级上学期期末模拟题(证明二---二次函数止)
成都高新区初2007级期末模拟题(玉林中学玉林校区初三数学组命制、成都高新区教研室任炯审核)A 卷一、选择题(每小题3分,共30分)1、 路程s(千米)一定时,速度v(千米/时)关于时间t(小时)的函数关系的大致图象是2.Rt △ABC 中,∠C=900,如果SinA=32,那么tanB 的值( )A.32 B.35 C.25 D.不确定3、 Rt △ABC 中,BC=5,AB=13,斜坡AB 的坡度为( ) A .1:3 B .1:2.6 C.1:2.4 D .1:2 4. 如图,ABCD 中,对角线AC 和BD 相交于点O ,如果AC=12、BD=10、AB=m ,那么m 的取值范围是( )A .1<m <11 B .2<m <22 C .10<m <12 D .5<m <6 5.下列图形既是轴对称图形,又是中心对称图形的是( )6、用配方法解方程x 2+6x+7=0时,正确的配方是( )A.(x+3)2=-2B.(x -3)2= -2C.(x+3)2 =2D. (x -3)2= 2 7. 如图,在△ABC 中,∠C=90°,AC=8cm, AB 的垂直平分线MN 交AC 于D , 连结BD ,若53cos =∠BDC ,则BC 的长是A .4cmB .6cmC .8cmD .10cm 8.如图.某飞机于空中A 处探测到地平面目标B ,此时飞机看到目标B 的俯角α=300 ,飞行高度AC=1200米,则飞机到目标B 的距离AB 为( ) A .1200米 B .2400米 C .4003米 D .12003米9.将y=2x 2的图象向右平移1个单位,再向上平移3个单位,得到的图象的解析式为( ) A .y=2(x -1)2-3 B .y=2(x +1)2+3 C .y=2(x -1)2+3 D .y=2(x +1)2-3 10. 如图,宽为50 cm 的矩形图案由10个全等的小长方形拼成,其中一个小长方形的面积为 ( )A. 400 cm 2 B. 500 cm 2 C. 600 cm 2 D. 4000 cm 2 二、填空题(每小题4分 共20分)11. 在一个不透明的袋中装有除颜色外其余都相同的3个小球,其中一个红球、两个黄球. 如果第DABO(第4题图)A BCDM N(第7题图)一次先从袋中摸出一个球后不再放回,第二次再从袋中摸出一 个,那么两次都摸到黄球的概率是 .12、已知一个梯形的面积为222cm ,高为2 cm ,则该梯形的中位线的长等于________cm13、A 、B 两点被池塘隔开(如下图),在AB 外选一点C ,连结AC 和BC 并分别找出其中点M 、N ,若测得MN =20m ,则A 、B 两点的距离为___________。
2007年甘肃兰州一中初中毕业暨高级中等学校招生模拟考试二
2007年甘肃省兰州一中初中毕业暨高级中等学校招生模拟考试语文试卷 (二)(全卷分八卷和B卷,A卷满分100分,B卷满分50分;考试时间120分钟。
A卷分第Ⅰ卷和第Ⅱ卷,第Ⅰ卷为选择题,第Ⅱ卷为其他类型的题)A卷 (100分)第Ⅰ卷 (选择题共20分)一、基础知识(每小题2分,共10分)1.下面语段中加点字注音错误的一项是( )几年前,家中第一次养了一笼十姊.妹。
当母鸟第一次生下了几颗玲珑剔.透、比小指头还小的鸟蛋以后,我和孩子们便.眼巴巴地等候小鸟孵.出来。
A.姊妹(zǐ) B.玲珑剔透(tì)C.便眼巴巴(biàn) D.孵出来(fū)2.下面句子中书写准确无误的一项是( )A.刹那间,我明白了其中的道理,——我感觉到有无数无形的线条正穿梭在我和其他人的心灵中间。
B.富有创造性的人总是致致不倦地汲取知识,使自己学识渊博。
C.我们今天的学习,需要有真正的格物致之的精神。
D.景山公园重重殿宇,层层楼阁,道道宫墙,错综相连,而井然有绪。
3.依次填入下列句子横线处的词语,最恰当的一项是( )①苏州园林里的门和窗,图案设计和雕镂工夫都是工艺美术的上品。
②科学在发展,书也在不断演变,它以越来越丰富的;哺育着勤奋学习的人们。
③意大利人马可·波罗说这座桥“是世界上独一无二的”,并且特别桥栏上刻的狮子。
A.琢磨养料欣赏B.打磨养料赞赏C.琢磨营养欣赏D.打磨营养赞赏4.下列句子中的成语使用不恰当的一项是( )A.站在罗布泊边缘,你能看到沧海桑田....的痕迹,你会感到这胸膛里面深藏的痛苦与无奈。
B.你不管从事什么职业,不管穿什么服饰,也不管在俄国什么地方,都不会有一种鹤.立鸡群...、引人注目的可能。
C .我们就是要虚张声势....,把大家的学习热情鼓动起来。
D .桂林山水真是神奇秀丽,青青的山,绿绿的水,令人流连忘返....。
5.下面的诗句诵读节奏划分不正确的一项是( )A .秋风/萧瑟,洪波/涌起B .几处/早莺/争/暖树,谁家/新燕/啄/春泥。
2007年春九年级数学第一次模拟试卷
2007年秋九年级第一次月考数学试题总分:120分 考试时间:120分钟 命题人: 周清华 审题人: 程燕云〖卷首语:亲爱的同学们,时间过得真快啊!进入初中已两年多了,你也与新课程在一起成长,相信你在原有的基础上又获得了许多新的数学知识和能力,变得更加聪明了。
让我们一起走进考场,仔细思考,认真作答,你可以尽情地发挥,祝你成功!〗本试卷共分Ⅱ卷,解答第Ⅰ卷时请将解答结果填写在第Ⅱ卷上指定的位置,否则答案无效Ⅰ卷一、选择题:(下列各小题都给出四个选项,其中只有一项是符合题目要求的,请将符合要求的选项前面的字母代号填写在第Ⅱ卷上指定的位置.每小题3分,计30分) 1、方程x(x+4)=5(x+4)的根是( ).A 、 x=5B 、 x 1=5, x 2=4C 、 x 1=5, x 2=-4D 、 x 1=-5 , x 2=4. 2、三角形中,若一个角等于其他两个角的差,则这个三角形是 ( ) A 、钝角三角形 B 、直角三角形 C 、锐角三角形 D 、等腰三角形3、已知一个等腰三角形有一个角为50o ,则顶角是( )A 、50oB 、80oC 、50o 或80oD 、不能确定4、在联欢晚会上,有三名同学站在一个三角形的三个顶点A 、B 、C 位置上,他们在玩抢凳子游戏,要求在他们中间放一个木凳,谁先抢到凳子谁获胜,为使游戏公平,则凳子应放的最适当的位置在△ABC 的( )上.A 、三边中线的交点B 、三条角平分线的交点C 、三边上高的交点D 、三边中垂线的交点5、如图,△ABC 是不等边三角形,DE=BC ,以D 、E 为两个顶点作位置不同的三角形使所作三角形与△ABC 全等,这样的三角形最多可以画出( )A 、2个B 、4个C 、6个D 、8个 6、用配方法将二次三项式542++a a 变形,结果正确的是( ) A 、1)2(2+-a B 、1)2(2++a C 、1)2(2--a D 、1)2(2-+a7、 已知三角形两边的长分别是4和6,第3边的长是一元二次方程(x-6)(x-10)=0的一个实数根,则该三角形的周长是( )A 、 20B 、 16C 、20或16D 、18或218、关于x 的一元二次方程k x -=2有实数根,则( ).A 、k ≤0B 、k ≥0C 、k >0D 、k <09、如图,在等边△ABC 中,P 为BC 上一点,D 为AC 上一点,且∠APD =60°,BP =1,CD=32,则△ABC 的边长为( )A 、3B 、4C 、5D 、610、某县政府准备为B 、C 两个村修建人畜饮水工程,取水点为A ,已知AB=BC=AC ,如图(1)、(2)、(3)的实线部分是三种不同的水管铺设线路设计方案,其中方案(3)的三段分别是∠BAC 、∠ABC 、∠BCA 的平分线,设三种方案的水管长度分别是l 1、l 2、l 3,则( ) A 、l 1>l 2>l 3 B 、l 2>l 1>l 3 C 、l 3>l 2>l 1 D 、l 1>l 3>l 2二、填空题:(请将答案填写在第II 卷指定的位置,本大题5小题,每小题3分,计15分) 11、命题:“等腰三角形的两个底角相等”的逆命题为 . 12、如果关于x 的代数式x 2-6x+m 2是一个完全平方式,那么m 的值为 . 13、请你写出一个以-1、2为根的一元二次方程:______________ .14、如图,△ABC 中,∠C=90°,AC=BC ,AD 平分∠CAB 交BC 于点D ,DE ⊥AB ,垂足为E ,且AB=6cm ,则△DEB 的周长为 .15、如图,∠AOB 是一钢架,且∠AOB=10°,为了使钢架更加牢固,需在其内部添加一些钢管EF 、FG 、GH ……添加的钢管长度都与OE 相等,则最多能添加这样的钢管 根.图2-2-16花园2007年秋九年级第一次月考数学试题Ⅱ卷 (解答题 共75分)三、解答题:(本大题共4小题,每小题6分,共24分)16、当x 为何值时,代数式x 2-13x+12的值与代数式-4x 2+18的值相等?17、如图,在△ABC 中,AB=AC.①求作AB 的垂直平分线DE 交AC 于D 、交AB 于E.(要求尺规作图,保留作图痕迹,不写作法) ②若∠A=50°,求∠DBC 的度数.18、如上图,在三角形ABC 中,AB=AC=9cm ,∠BAC=120º,AD 是ΔABC 的中线,AE 是∠BAD 的平分线,DF ∥AB ,交AE 的延长线于F ,求DF 的长。
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课程编号:01200023 北京理工大学2009-2010学年第一学期
2007级模拟电子技术基础A试题(A卷)注:试题答案必须写在答题纸上,在试卷和草稿纸上答题无效
班级学号姓名成绩
一、综合题(28分)
1. 根据图S1-1中各三极管的电极电位,分别填写出它们所处的工作状态。
图1-1
VT
1 , VT
2
, VT
3
2. 放大电路如图1-2(a)所示,如果增大电阻R E,该电路的电压增益;如果输出波形如图(b)所示,说明该电路出现了失真,要消除该失真,电阻R b1应该(增大、减小、不变)。
(a)(b)
图1-2
3. 已知放大电路的输入信号为1mV,输出电压为1V,引入负反馈后,为保证相同的输出电压,输入信号为10mV,则引入负反馈的反馈系数为,电路的反馈深度为。
4.为了保证图1-4所示放大电路能正常工作,应选择何种类型的M OS管,画出相应的符号并标明管脚接号。
图1-4 图1-5
5. 功率放大电路如图1-5所示,V CC =15V ,R L =8Ω,|U CES |=3V ,输入信号
t u i ωsin 10=V ,则负载R L 上获得的最大输出功率为 ,电路中二极管的作用是 。
6. 某放大电路电压放大倍数的表达式为)
10
1)(1.01(205f
j jf jf A u
++-= ,则该电路的中
频电压增益为: ,下限截止频率为 ,上限截止频率为 。
二、(12分)图2所示放大电路中,已知VT 1、VT 2晶体管的β=100,I CQ1=2mA ,I CQ2=2.1mA ,r bb’=300Ω,各电容对交流可视为短路。
1.画出放大电路的交流通路。
2.写出电压增益i
o
u U U A =
的表达式并计算其数值。
3.求输入电阻i R 和输出电阻o R 。
图
2
三、(12分)在图3所示电路中,各运放均为理想运算放大器,分别计算各电路的输出电压。
图3
四、(14分)电路如图4所示,
图4
1.为了将输入电压I u 转换为稳定的输出电流L i ,说明运放的同相与反相输入端应
如何连接。
并说明该电路中反馈的组态。
2.如果输入电压u I 的变化范围为0~5V 时,计算电流L i 的变化范围。
五、(12分)判断下列电路是否产生正弦波,并简述理由。
(a ) (b)
(c) RC 正弦波振荡电路
图5
六、(12分)在图6所示三角波发生器中,已知A 1、A 2、A 3均为理想运算放大器,它们输出电压的两个极限值为±12V 。
1.说明A 1、A 2、A 3组成各电路的功能; 2.求解O u 的频率f 和幅值U OM 、O1u 的峰值U OM1。
3.画出输出电压O u 与O1u 和O2u 的对应波形。
图6
七、(10分)在如图7所示电路中,已知三端稳压器W7812的输出电压U23=12V,最大输出电流I Omax=0.1A;A为理想运放。
1.设R1=R2=1KΩ, R3=R4=2KΩ,求输出电压U O的调节范围。
图7。