09年高考题电子类基础课试题卷B

较难绝密★启用前江苏省2009年普通高校单独招生统一考试试卷电子电工专业综合理论本试卷分第Ⅰ卷（客观题）和第Ⅱ卷（主观题）两部分。

第Ⅰ卷1至4页，第Ⅱ卷5至12页。

两卷满分300分。

考试时间150分钟。

第Ⅰ卷（共120分）一、选择题（本大题共18小题，每小题5分，共90分，每小题只有一个正确答案。

请将唯一正确的答案填涂在答题卡上）1．在题1图所示二端网络中，电压U 与电流I 之间的关系为A ．U = 10-5IB ．U = 10+5 IC ．U = 5 I -10D ．U = -5 I -10题1图2．在题2图所示电路中，当电流源产生的功率为20 W 时，R w 的值为A ．0B ．2.5 ΩC ．7.5 ΩD ．5 Ω3．设两电流分别为A 4π3πcos 51⎪⎭⎫ ⎝⎛+=t i ，A 2ππcos 42⎪⎭⎫⎝⎛-=t i ， 则i 1对i 2的相位差为A ．超前π4 rad B ．滞后 34π rad C ．滞后 π4 rad D ．超前 34πrad4．在题4图所示对称三相电路中，当开关S 闭合时电流表读数为1 A ，若将开关S 打开，则电流表读数A ．变大B ．变小C ．不变D ．为零30V5 V +_Z Z Z Z Z Z1题4图5．电路如题5图所示。

已知加在R－C串联电路两端的电压u= [60 -25 sin(3ωt + 30º)] V，R = 4 Ω，Ω=91Cω，则电路中的电流i为A.5sin(3ωt+ 66.9°) AB.9.85sin(3ωt-84°) AC.5sin(3ωt-113.1°) AD. [15 - 5sin(3ωt + 66.9︒)] ACu题5图6.下列说法中正确的是A.硅钢片具有高导磁率，可制造永久磁铁B.交流电磁铁上有短路铜环，是为了防止振动C.调压器既可用来调节交流电压，也可用来调节直流电压D.电压互感器副边不能开路，电流互感器副边不能短路7．题7图(a)所示的放大器，在输入正弦电压时，输出u o波形如题7图(b)所示，则该电路所出现的失真类型及减小失真所应采取的措施是A．出现饱和失真，应调大R P B．出现饱和失真，应调小R PC．出现截止失真，应调大R P D．出现截止失真，应调小R P题7图8．电路如题8图所示，欲稳定电路的输出电压，应采用的方法是A．1与3相接 B．1与4相接 C．2与3相接 D．2与4相接题8图9．题9图（a ）所示电路的输入信号u i 为正弦波，输出u o 波形如（b ）图所示。

09年高考试题精选浙江卷部分解析 测试题 2019.91,18.某实物投影机有10个相同的强光灯L 1～L 10(24V/200W)和10个相同的指示灯X 1～X 10(220V/2W),将其连接在220V 交流电源上，电路见题18图，若工作一段时间后，L 2 灯丝烧断，则（ ） A. X 1的功率减小，L 1的功率增大 B. X 1的功率增大，L 1的功率增大C, X 2功率增大，其它指示灯的功率减小 D. X 2功率减小，其它指示灯的功率增大 2,19.在题19图所示电路中，电池均相同，当电键S 分别置于a 、b 两处时，导线与，之间的安培力的大小为、，判断这两段导线（ ）A.相互吸引，＞B.相互排斥，＞C.相互吸引，＜D.相互排斥，＜ 3,MM'NN' a f bf a f b f a f b f a f b f a f b f20.题20图为一种早期发电机原理示意图，该发电机由固定的圆形线圈和一对用铁芯连接的圆柱形磁铁构成，两磁极相对于线圈平面对称，在磁极绕转轴匀速转动过程中，磁极中心在线圈平面上的投影沿圆弧运动，（是线圈中心），则（ ）A.从X 到O,电流由E 经G 流向F ，先增大再减小B.从X 到O,电流由F 经G 流向E ，先减小再增大C.从O 到Y,电流由F 经G 流向E ，先减小再增大D. 从O 到Y,电流由E 经G 流向F ，先增大再减小4,21.用a 、b 、c 、d 表示四种单色光，若①a 、b 从同种玻璃射向空气，a 的临界角小于b 的临界角；②用b 、c 和d 在相同条件下分别做双缝干涉实验，c 的条纹间距最大 ③用b 、d 照射某金属表面，只有b 能使其发射电子。

则可推断a 、b 、c 、d 可能分别是A.紫光、蓝光、红光、橙光B. 蓝光、紫光、红光、橙光C.紫光、蓝光、橙光、红光D. 紫光、橙光、红光、蓝光 5,25.（19分）如题25图，离子源A 产生的初速为零、带电量均为e 、质量不同的正离子被电压为U 0的加速电场加速后匀速通过准直管，垂直射入匀强偏转电场，偏转后通过极板HM 上的小孔S 离开电场，经过一段匀速直线运动，垂直于边界MN 进入磁感应强度为B 的匀强磁场。

2009年普通高等学校招生全国统一考试物 理 （广东A 卷） 本试卷共8页，20小题，满分150分。

考试用时120分钟。

注意事项：1.答卷前，考生务必用黑色字迹的钢笔或签字笔将自己的姓名和考生号、试室号、座位号填写在答题卡上，用2B 铅笔将试卷类型（B ）填涂在答题卡相应位置上。

将条形码横贴在答题卡右上角“条形码粘贴处”。

2.选择题每小题选出答案后，用2B 铅笔把答题卡上对应题目选项的信息点涂黑，如需改动，用橡皮擦干净后，再选涂其他答案，答案不能答在试卷上。

3.非选择题必须用黑色字迹钢笔或签字笔作答，答案必须写在答题卡各题目指定区域内相应位置上；如需改动，先划掉原来的答案，然后再写上新的答案；不准使用铅笔和涂改液。

不按以上要求作答的答案无效。

4.作答选做题时，请先用2B 铅笔填涂选做题的题号对应的信息点，再作答。

漏涂、错涂、多涂的，答案无效。

5.考生必须保持答题卡的整洁。

考试结束后，将试卷和答题卡一并交回。

一、选择题：本大题共12小题，每小题4分，共48分。

在每小题给出的四个选项中，有一个或一个以上选项符合题目要求，全部选对的得4分，选不全的得2分，有选错或不答的得0分。

1．物理学的发展丰富了人类对物质世界的认识，推动了科学技术的创新和革命，促进了物质生产的繁荣与人类文明的进步，下列表述正确的是A ．牛顿发现了万有引力定律B ．洛伦兹发现了电磁感应定律C ．光电效应证实了光的波动性D ．相对论的创立表明经典力学已不再适用2．科学家发现在月球上含有丰富的He 32（氦3），它是一种高效、清洁、安全的核聚变燃料，其参与的一种核聚变反应的方程式为He 32+He 32→H 112+He 42，关于He 32聚变下列表述正确的是A ．聚变反应不会释放能量B ．聚变反应产生了新的原子核C ．聚变反应没有质量亏损D ．目前核电站都采用He 32聚变反应发电3．某物体运动的速度图象如图1，根据图象可知 A ．0-2s 内的加速度为1m/s 2B ．0-5s 内的位移为10mC ．第1s 末与第3s 末的速度方向相同D ．第1s 末与第5s 末的速度方向相同4．硅光电池是利用光电效应原理制成的器件,下列表述正确的是A ．硅光电池是把光能转变为电能的一种装置B ．硅光电池中吸收了光子能量的电子都能逸出C ．逸出的光电子的最大初动能与入射光的频率无关D ．任意频率的光照射到硅光电池上都能产生光电效应5．发射人造卫星是将卫星以一定的速度送入预定轨道，发射场一般选择在尽可能靠近赤道的地方，如图2．这样选址的优点是，在赤道附近A ．地球的引力较大B ．地球自转线速度较大图1C ．重力加速度较大D ．地球自转角速度较大6．如图3所示，在一个粗糙水平面上，彼此靠近地放置两个带同种电荷的小物块，由静止释放后，两个物块向相反方向运动，并最终停止，在物块的运动过程中，下列表述正确的是A ．两个物块的电势能逐渐减少B ．物块受到的库仑力不做功C ．两个物块的机械能守恒D ．物块受到的摩擦力始终小于其受到的库仑力7．某缓冲装置可抽象成图4所示的简单模型，图中K 1、轻质弹簧，下列表述正确的是A ．缓冲效果与弹簧的劲度系数无关B ．垫片向右移动时，两弹簧产生的弹力大小相等C ．垫片向右移动时，两弹簧的长度保持相等D ．垫片向右移动时，两弹簧的弹性势能发生改变8．人在地面上用弹簧秤称得其体重为490N ，他将弹簧秤移至电梯内称其体重，t 0至t 3时间段内弹簧秤的示数如图5所示，电梯运行的v-t 图可能是（取电梯向上运动的方向为正）9．图6为远距离高压输电的示意图，关于远距离输电，下列表述正确的是A ．增加输电导线的横截面积有利于减少输电过程中的电能损失B ．高压输电是通过减小输电电流来减少电路的发热损耗C ．在输送电压一定时，输送的电功率越大，输电过程中的电能损失越小D ．高压输电必须综合考虑各种因素，不一定是电压越高越好10．如图7所示，电动势为E 、内阻不计的电源与三个灯泡和三个电阻相接，只合上开关S 1，三个灯泡都能正常工作，如果再合上S 2，则下列表述正确的是A ．电源输出功率减小B ．L 1上消耗的功率增大C．通过R 1上的电流增大 D ．通过R 3上的电流增大11．如图8所示，表面粗糙的斜面固定于地面上，并处于方向垂直纸面向外、强度为B 的t 图3 垫片 图4 图5 t t t匀强磁场中，质量为m 、带电量为+Q 的小滑块从斜面顶端由静止下滑。

2009 年普通高等学校招生全国统一考试( 广东卷)理科基础本试卷共12页，75题，满分150分。

考试用时120分钟。

注意事项：1·答卷前，考生务必用黑色字迹的钢笔或签字笔将自己的姓名和考生号、试室号、座位号填写在答题卡上。

用2B铅笔将试卷类型(B)填涂在答题卡相应位置上。

将条形码横贴在答题卡右上角“条形码粘贴处”。

2·每题选出答案后，用2B铅笔把答题卡上对应题目选项的答案信息点涂黑，如需改动，用橡皮擦干净后，再选涂其他答案，答案不能答在试卷上。

3·考生必须保持答题卡的整洁。

考试结束后，将试卷和答题卡一并交回。

本试卷共75 题，全部是单项选择题，每题2 分。

在每题的四个选项中，只有一项是符合题目要求的。

1．发现通电导线周围存在磁场的科学家是A．洛伦兹B．库仑C．法拉第D．奥斯特答案.B【解析】发现电流的磁效应的科学家是丹麦的奥斯特.而法拉第是发现了电磁感应现象2．做下列运动的物体，能当作质点处理的是A．自转中的地球B．旋转中的风力发电机叶片C．在冰面上旋转的花样滑冰运动员D．匀速直线运动的火车答案.B【解析】ABC选项中对所研究的问题,物体各部分的运动情况不一样所以不能看作质点,D可以.3．图1是甲、乙两物体做直线运动的v一t图象。

下列表述正确的是A．乙做匀加速直线运动B．0一ls内甲和乙的位移相等C．甲和乙的加速度方向相同D．甲的加速度比乙的小答案.A【解析】甲乙两物体在速度图象里的图形都是倾斜的直线表明两物体都是匀变速直线,乙是匀加速,甲是匀减速,加速度方向不同A对C错.根据在速度图象里面积表示位移的方法可知在0一ls内甲通过的位移大于乙通过的位移.B错.根据斜率表示加速度可知甲的加速度大于乙的加速度,D错.4．建筑工人用图2所示的定滑轮装置运送建筑材料。

质量为70.0kg的工人站在地面上，通过定滑轮将20.0kg的建筑材料以0．500m／s2的加速度拉升，忽略绳子和定滑轮的质量及定滑轮的摩擦，则工人对地面的压力大小为(g取lOm／s。

09年高考试题精选2009年普通高等学校招生全国统一考试测试题 2019.91,28. She brought with her three friends, none of Ihad ever met before.A. themB. whoC. whomD. these2,29. Edward, you play so well. But I you played the piano.A. didn't knowB. hadn't knownC. don't knowD. haven't known3,30. The children all turned the famous actress as she entered the classroom.A. looked atB. to look atC. to looking atD. look at4,31. The computer was used in teaching. As a result, not only ,but students became more interested in the lessons.A. saved was teachers' energyB. was teachers' energy savedC. teachers' energy was savedD. was saved teachers' energy5,32. Encourage your children to try new things, but try not to them too hard.A. drawB. strikeC. rushD. push6,33. One of the most important questions they had to consider was of public healthA. whatB. thisC. thatD. which7,34. Everybody was touched words after they heard her moving story.A. beyondB. withoutC. ofD. in8,35. Now that we've discussed our problem, are people happy with the decisions ?A. takingB. takeC. takenD. to take9,第一部分：英语知识（共两节，满分30分）第一节：单项填空（共20小题 ;每小题0.5分，满分10分）从A、B、C和D四个选项中，迁出可以填入空白处的最佳选项，并在答题纸上将该选项标号涂黑。

09年高考试题精选山东省2009届高考试卷 测试题2019.91,某大学开设甲、乙、丙三门选修课，学生是否选修哪门课互不影响. 已知某学生选修甲而不选修乙和丙的概率为0.08，选修甲和乙而不选修丙的概率是0.12，至少选修一门的概率是0.88，用表示该学生选修的课程门数和没有选修的课程门数的乘积.（I ）记“函数为R 上的偶函数”为事件A ，求事件A 的概率；（Ⅱ）求的分布列和数学期望.2,已知集合．其中 为正常数． （I ）设，求的取值范围． （II ）求证：当时不等式对任意恒成立；（III ）求使不等式对任意恒成立的的范围．3,已知是数列{}的前项和，(1)分别计算的值； (2)证明：当≥1时，≥，并指出等号成立条件；(3)利用（2）的结论，找出一个适当的∈N ，使得＞2008； (4)是否存在关于正整数的函数，使得对于大于1的正整数都成立？证明你的结论。

4,△ABC（I ）求∠C 的大小； （Ⅱ）设角A ，B ，C 的对边依次为，若，且△ABC 是锐角三角形，求的取值范围．ξ2()f x x x ξ=+⋅ξ{}121212(,)0,0,D x x x x x x k =>>+=k 12u x x =u 1k ≥21212112()()()2k x x x x k --≤-12(,)x x D ∈21212112()()()2k x x x x k --≥-12(,)x x D ∈k n S n 1n 482412,,S S S S S S ---n 122--n n S S T T S n )(n f )1)((121-=+⋅⋅⋅++-n n S n f S S S n tan tan tan A B A B --=,,a b c 2c =22a b +5,在中，.( I)证明;(Ⅱ)若,求的值.6,已知正三棱柱ABC-A 1B 1C 1的底边长为1，高为h(h>3)，点M 在侧棱BB 1上移动，到底面ABC 的距离为x ， 且AM 与侧面BCC 1所成的角为α；（Ⅰ）若α在区间上变化，求x 的变化范围；（Ⅱ）若所成的角.7,函数的反函数的对称中心为（1，－1），则实数＝.8,不等式的解集为 ． 9,设点P （）是函数与（x ∈（，）图象的交点，则（）（的值是 ________10, 如果随机变量ξ～N (),且P （）=0.4，则P （）= ____测试题答案ABC ∆3231,2||,4||+====6||=||]4,6[ππBCAM 与求为,6πα()x af x x a -=+1()f x -a 21||1||1<+-x x 00,y x x y tan =0=+y x 2π-2π120+x )12cos 0+x 2,1σ-13-≤≤-ξ1≥ξ1, 解：设该学生选修甲、乙、丙的概率分别为x 、y 、z依题意得…………4分（1）若函数为R 上的偶函数，则=0…………5分 当=0时，表示该学生选修三门功课或三门功课都没选. =0.4×0.5×0.6+（1－0.4）（1－0.5）（1－0.6）=0.24 ∴事件A 的概率为0.24 …………8分 （2）依题意知的的取值为0和2由（1）所求可知 P （=0）=0.24 P （=2）=1- P （=0）=0.76∴的数学期望为E =0×0.24+2×0.76=1.522, （I ），当且仅当时等号成立， 故的取值范围为．（3分） （II ） 变形，得 . （5分）由，又，，∴在上是增函数，所以．即当时不等式成立． （9分） （III ）令，则， ⎪⎩⎪⎨⎧===⎪⎩⎪⎨⎧=----=-=--5.06.04.0,88.0)1)(1)(1(1,12.0)1(,08.0)1)(1(z y x z y x z xy z y x 解得2()f x x x ξ=+ξξ)1)(1)(1()0()(z y x xyz P A P ---+===∴ξξξξξξ221212()24x x k x x +≤=122kx x ==u 2(0,]4k 121212121221111()()x x x x x x x x x x x x --=+--222212121212121211122x x k k x x x x u x x x x x x u +--=+-=-+=-+204k u <≤1k ≥210k -≥21()2k f u u u -=-+2(0,]4k 121211()()x x x x --=212k u u --+22222214222()4424k k k k k k k -≤-+=-+=-1k ≥21212112()()()2k x x x x k --≤-121211()()x x x x --=212()k u f u u -++=)4()22(22k f kk =-即求使对恒成立的的范围．（10分）由（II ）知，要使对任意恒成立，必有，因此，∴函数在上递减，在上递增，要使函数在上恒有，必有，即，解得．3, (1)＝， ＝，＝。

09年高考试题精选2009年普通高等学校招生全国统一考试测试题 2019.91,第二节完形填空（共20小题；每小题1. 5分，满分30分）阅读下面短文，从短文后各题所给的四个选项（A、B、C、和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

After spending a weekend away with my adult son, I was so impressed by his generous heart that I sent him this letter.2,第三部分阅读理解（共20小题；每小题2分，满分40分）阅读下列短文，从每题所给的四个选项（A、B、c和D）中，选出最佳选项，并在答题卡上将该项涂黑。

ARemembering names is an important social skill. Here are some ways to master it.Recite and repeat in conversation.When you hear a person's name，repeat it. Immediately say it to yourself several times without moving your lips. You could also repeat the name in a way that does not sound forced or artificial.Ask the other person to recite and repeat.You can let other people help you remember their names. After you've been introduced to someone，ask that person to spell the name mad pronounce it correctly for you. Most people will be pleased by the effort you're making to learn their names. Admit you don't know.Admitting that you can't remember someone's name can actually make people relaxed. Most of them will feel sympathy if you say. “I'm working to remember names better. Yours is right on the tip of my tongue. What is it again?”Use associations.Link each person yon meet with one thing you find interesting or unusual. For example，you could make a mental note: "Vicki Cheng -- tall, black hair. " To reinforce you're your associations, write them on a small card as soon as possible.Limit the number of new names you learn at one time.When meeting a group of people, concentrate on remembering just two or three names. Free yourself from remembering every one. Few of the people in mass introductions expect you to remember their names. Another way is to limit yourself to learning just first names. Last names can come later.Go early.Consider going early to conferences, parties and classes. Sometimes just a few people show up on time. That's fewer namesfor you to remember. And as more people arrive, you can hear them being introduced to others-an automatic review for you.56. How will most people feel when you try hard to remember their names?A. They will be moved.B. They will be annoyed.C. They will be delighted.D. They will be discouraged.57. If you can't remember someone's name, you may __A. tell him the truthB. tell him a white lieC. ask him for pityD. ask others to help you58. When you meet a group of people, it is better to remember __A. all their namesB. a couple of names firstC. just their last namesD. as many names as possible59. What does the text mainly tell us?A. Tips on an important social skill.B. Importance of attending parties.C. How to make use of associations.D. How to recite and repeat names.BThe year 2009 is the Year of Ox. The ox is a representative of the fanning culture of China. In the farming economy （经济）, oxen are the major animals pulling plows （犁）.Of course, the good of oxen is not limited to plowing. In fact, they are seen as "boats on land" for their ability to carry loads. Besides, the whole body of an ox is full of treasures. Their meat and milk are food full of nutrition, and their skin can be used to make clothes and shoes. With all these qualities, oxen are regarded as generous creatures.In the past, oxen played an important role in the spiritual life of the Chinese. Even today, oxen still play a special part in some folk activities. For example, some people who1ire in southwest China will cook cattle bone soup and share it among family members when holding the ceremony for children who reach 13. They believe that the cattle bone soup represents the blood relationship among family members. In order to express their love for oxen, people in some other areas will run to shake off diseases on the 16th day of the first month by the lunar calendar （农历）, and during their run they will take their oxen along, which indicates they regard the creature as human.Because of the contribution of oxen in their lives, the Chinese people are very grateful to the animal. In addition, the use of oxen in ceremonies and the thanks people owe to oxen help todevelop various traditional customs, which becomes an important part of the folk culture of the Chinese nation.60. The words "boats an land" underlined in Paragraph 2 refer to __A. animals for taking goodsB. creatures for pulling plowsC. treasures of the folk cultureD. tools in the farming economy6l. From the third paragraph, we know that __A. oxen are no more important today than in the pastB. ceremonies are held when people cook cattle bone soupC. oxen are treated as human in some areas of ChinaD. people run with oxen to shake off diseases every month62. Which of the following helps to develop traditional customs?A. The special role of oxen in frowning.B. People's respect and love for oxen.C. The practical value of an ox's body.D. The contribution of oxen to the economy.63. Why does the author write the text?A. To stress the importance of oxen in farming.B. To introduce the Chinese folk culture.C. To describe how to celebrate the Year of Ox.D. To explain how to develop agriculture with oxen.CSometimes, the simplest ideas are the best. For example, to absorb heat from the sun to heat water, you need large, flat, black surfaces. One way to do that is to build those surfaces specially, on the roofs of buildings. But why go to all that trouble when cities are rub of black surfaces already, in the form of asphalt （柏油） roads?Ten years ago, this thought came into the mind of Arian de Bondt, a Dutch engineer. He finally persuaded his boss to follow it up. The result is that their building is now heated in winter and cooled in summer by a system that relies on the surface of the road outside.The heat-colleetor is a system of connected water pipes. Most of them ran from one side of the street to the other, just under the asphalt road. Some, however, dive deep into the ground. When the street surface gets hot in summer, water pumped through the pipes picks up this heat and takes it underground through one of the diving pipes. At a depth of 100 metres lies a natural aquifer （蓄水层） into which several heat exchangers （交换器） have been built. The hot water from the street runs through these exchangers, warning the ground-water, before returning to the surface through another pipe. The aquifer is thus used as a heat store.In winter, the working system is changed slightly. Water is pumped through the heat exchangers to pick up the heat stored during summer. This water goes into the building and is used towarm the place up. After performing that task, it is pumped under the asphalt and its remaining heat keeps the road free of snow and ice.64. Which of the following is true according to the first two paragraphs?A. Arian de Bondt got his idea from his boss.B. Large, flat, black surfaces need to be built in cities.C. The Dutch engineer's system has been widely used.D. Heat can also be collected from asphalt roads.65. For what purpose are the diving pipes used?A. To absorb heat from the sun.B. To store heat for future use.C. To turn solar energy into heat energy.D. To carry heat down below the surface.66. From the last paragraph we can learn that __A. some pipes have to be re-arranged in winterB. the system can do more than warming up the buildingC. the exchangers will pick up heat from the street surfaceDTimetableD. less heat may be collected in winter than in summer67. What is most likely to be discussed in the paragraph that follows?A. What we shall do if the system goes wrong.B. What we shall do if there are no asphalt roads.C. How the system cools the building in summer.D. How the system collects heat in spring and autumn.68. Which of the following is true of the membership card?A. Its number is l0865 305305.B. It belongs to Mr. E. M. Driscoll.C. It is valid through the year of 2010.D. It gets the owner a discount when used.69. If one wants to attend a business lunch in London at l2：00,the latest train that he should take at Oxford leaves at .A. 11：45B. 11：15C. 10：35D. 10：0570. If you would like to have some vegetable beef, what may be your choice?A. French Slam®B. Chicken-Fried Steak®C. The Super Bird®D. Sandwich with Salad or Soup®71. The chart shows that from 2005 to 2008， .A. the percentage of the Spanish families with a computer rose35 pointsB. the percentage of the White families with a computer remained unchangedC. the number of the Black families with a computer was on the decreaseD. the number of the Asian families with a computer showed the sharpest increaseEA rainforest is an area covered by tall trees with the total high rainfall spreading quite equally through the year and the temperature rarely dipping below l6℃. Rainforests have a great effect on the world environment because they can take in heat from the sun and adjust the climate. Without the forest cover，these areas would reflect more heat into the atmosphere，warming the rest of the world. Losing the rainforests may also influence wind and rainfall patterns，potentially causing certain natural disasters all over the world.In the past hundred years，humans have begun destroying rainforests in search of three major resources（资源）：land for crops，wood for paper and other products，land for raising farm animals. This action affects the environment as a whole. For example，a lot of carbon dioxide（二氧化碳）in the air comes from burning the rainforests. People obviously have a need for the resources we gain from cutting trees but we will suffer much more than we will benefit.There are two main reasons for this. Firstly，when people cut down trees，generally they can only use the land for a year or two. Secondly，cutting large sections of rainforests may provide a good supply of wood right now，but in the long run it actually reduces the world's wood supply.Rainforests are often called the world's drug store. More than 25％ of the medicines we use today come from plants in rainforests. However，fewer than l％of rainforest plants have been examined for their medical value. It is extremely likely that our best chance to cure diseases lies somewhere in the world's shrinking rainforests.72. Rainforests can help to adjust the climate because they .A. reflect more heat into the atmosphereB. bring about high rainfall throughout the worldC. rarely cause the temperature to drop lower than l6℃D. reduce the effect of heat from the sun on the earth73. What does the word “this” underlined in the third paragraph refer to?A. We will lose much more than we can gain.B. Humans have begun destroying rainforests.C. People have a strong desire for resources.D. Much carbon dioxide comes from burning rainforests.74. It can be inferred from the text thatA. we can get enough resources without rainforestsB. there is great medicine potential in rainforestsC. we will grow fewer kinds of crops in the gained landD. the level of annual rainfall affects wind patterns75. What might be the best title for the text?A. How to Save RainforestsB. How to Protect NatureC. Rainforests and the EnvironmentD. Rainforests and Medical Development3,第一节（共5小题；每小题1.5分，满分7.5分）听下面5段对话。

2009年普通高等学校招生全国统一考试（山东卷）基本能力测试本试卷分第Ⅰ卷和第Ⅱ卷两部分，共12页，满分100分。

考试用时120分钟，答卷前，考生务必用0.5毫米的黑色签字笔将自己的姓名、座号、准考证号、区县和科类填写在答题卡和试卷规定的位置，并认真核准条形码上的信息。

考试结束后，将本试卷和答题卡一并交回。

第Ⅰ卷（共30分）注意事项：1.第Ⅰ卷共30小题，全部为单项选择题，每小题1分，共30分。

2.每小题选出答案后，用2B铅笔把答题卡上对应的答案标号涂黑，如需改动，用橡皮擦干净后，再选涂其他答案标号。

不涂在答题卡上，只答在试卷上不得分。

一、春天终会来的，谁也阻挡不住那波涛一样的绿色旋律。

1.“一元复始，万象更新。

”春天给大自然带来生机，给人们带来希望，给社会带来新气象。

下列说法正确的是①春天万物复苏，惊蛰前后大多数蛰伏的动物开始活动②春风化雨润物无声，齐鲁大地的春雨是由印度洋上的暖湿气流带来的③“千门万户曈曈日，总把新桃换旧符。

”王安石的《元日》描写了元宵节的习俗④“莫道今年春将尽，明年春色倍还人。

”这两句诗可借以表达人们应对国际金融危机的信心A. ①②B. ①③C. ①④D. ③④2.右图是小刚用WORD软件制作的春节宣传册的一页。

下列操作与版式效果无关的是A.设置“福”字图片的环绕方式为“四周型”B.在“页面设置”中选择页面方向为“横向”C.在“格式”→“分栏”中选择栏数为“两栏”D.在“常用”工具栏中设置显示比例为“200%”3.下列旋律片段选自器乐曲《春之声圆舞曲》《春江花月夜》与歌曲《春天在哪里》《春天的故事》，其中旋律从高点出发逐渐呈下行趋势的是4.“万紫千红总是春”，自然界的绚丽色彩是艺术的重要源泉。

借助色彩中互补色关系可使色彩组合变得更加醒目。

下列诗句体现了绘画色彩中互补色关系的是A.春来江水绿如蓝B.万绿丛中一点红C.一行白鹭上青天D.两个黄鹂鸣翠柳5.生机勃勃的春天是参加户外运动的大好时机。

09年高考试题精选2009年高考试题北京理综部分测试题 2019.91,7． W、X、Y、Z均为短周期元素，W的最外层电子数与核外电子总数之比为7︰17；X与W 同主族；Y的原子序数是W和X的原子序数之和的一半；含Z元素的物质焰色反应为黄色。

下列判断正确的是A．金属性：Y>Z B．氢化物的沸点：X>WC．离子的还原性：X>W D ．原子及离子半径：Z>Y>X2,8．下列叙述正确的是A．将CO2通入BaCl2溶液中至饱和，无沉淀产生；再通人SO2，产生沉淀B．在稀硫酸中加入铜粉，铜粉不溶解；再加入Cu(NO3)2固体，铜粉仍不溶解C．向AlCl3溶液中滴加氨水，产生白色沉淀；再加入过量NaHSO4溶液，沉淀消失D．纯锌与稀硫酸反应产生氢气的速率较慢；再加入少量CuSO4固体，速率不改变3,9．已知：H 2(g)+I2(g)2HI(g)；△H < 0。

有相同容积的定容密闭容器甲和乙，甲中加入H2和I2各0.1 mol，乙中加入HI 0.2 mol，相同温度下分别达到平衡。

欲使甲中HI的平衡浓度大于乙中HI的平衡浓度，应采取的措施是A．甲、乙提高相同温度B．甲中加入0.1 mol He，乙不变C．甲降低温度，乙不变D．甲增加0.1 mol H2，乙增加0.1 mol I24,10．甲、乙、丙、丁4种物质分别含2种或3种元素，它们的分子中各含l8个电子。

甲是气态氢化物，在水中分步电离出两种阴离子。

下列推断合理的是A．某钠盐溶液含甲电离出的阴离子，则该溶液显碱性，只能与酸反应B．乙与氧气的摩尔质量相同，则乙一定含有极性键和非极性键C．丙中含有第2周期ⅣA族的元素，则丙一定是甲烷的同系物D．丁和甲中各元素质量比相同，则丁中一定含有-l价的元素5,11．有4种混合溶液，分别由等体积0.1 mol ／L 的2种溶液混合而成：①CH 3COONa 与HCl ；②CH 3COONa 与NaOH ；③CH 3COONa 与NaCl ；④CH 3COONa 与NaHCO 3下列各项排序正确 的是 A ．pH ：②>③>④>① B ．c(CH 3COO 一)：②>④>③>① C ．溶液中c(H +)：①>③>②>④ D ．c(CH 3COOH)：①>④>③>②6,12．由短周期元素组成的中学常见无机物A 、B 、C 、D 、E 、X 存在如右图转化关系（部分生成物和反应条件略去）。

09年高考试题精选2009年高考试题理（全国卷1） 测试题 2019.91,△ABC 的内角A 、B 、C 的对边分别为a 、b 、c. 若a 、b 、c 成等比数列，且==B a c cos ,2则（A ）41 （B ）43（C ）42 （D ）322,已知各顶点都在一个球面上的正四棱柱高为4，体积为16，则这个球的表面积是 （A ）16π （B ）20π （C ）24π （D ）32π3,抛物线2x y -=上的点到直线0834=-+y x 距离的最小值是（A ）34 （B ）57 （C ）58（D ）34,设平面向量a 1、a 2、a 3的和a 1+a 2+a 3=0. 如果平面向量b 1、b 2、b 3满足ii i a a b 且|,|2||=顺时针旋转30°后与b i 同向，其中i=1，2，3，则（A ）0321=++-b b b （B ）0321=+-b b b （C ）0321=-+b b b （D ）0321=++b b b5,设}{n a 是公差为正数的等差数列，若321321,15a a a a a a =++=80，则 131211a a a ++=（A ）120 （B ）105 （C ）90 （D ）756,用长度分别为2、3、4、5、6（单位：cm ）的5根细木棒围成一个三角形（允许连接，但 不允许折断），能够得到的三角形的最大面积为 （A ）58cm 2 （B ）106cm 2（C ）553cm 2 （D ）20cm 27,设集合}5,4,3,2,1{=I ，选择I 的两个非空子集A 和B ，要使B 中最小的数大于A 中 最大的数，则不同的选择方法共有 （A ）50种 （B ）49种 （C ）48种 （D ）47种8,△ABC 的三个内角为A 、B 、C ，求当A 为何值时,2cos2cos CB A ++取得最大值,并求出这个最大值.9,A 、B 是治疗同一种疾病的两种药，用若干试验组进行对比试验，每个试验组由4只小白鼠组成，其中2只服用A ，另2只服用B ，然后观察疗效. 若在一个试验组中，服用A 有效的小白鼠的只数比服用B 有效的多，就称该试验组为甲类组. 设每只小白鼠服用A 有效的概率为32，服用B 有效的概率为21.（Ⅰ）求一个试验组为甲类组的概率；（Ⅱ）观察3个试验组，用ξ表示这3个试验组中甲类组的个数. 求ξ的分布列和数学期望.10,如图，1l 、2l 是相互垂直的异面直线，MN 是它们的公垂线段. 点A 、B 在1l 上，C 在2l 上，AM = MB = MN.（Ⅰ）证明NB AC ⊥；（Ⅱ）若60=∠ACB ，求NB 与平面ABC 所成角的余弦值.测试题答案1, B 2, C 3, A 4, D 5, B 6, B 7, B 8, 解：由,222,AC B C B A -=+=++ππ得所以有.2sin 2cosA CB =+2sin 2cos 2cos2cos AA CB A +=++2sin 22sin 212A A +-=.23)212(sin22+--=A当.232cos 2cos ,3,212sin取得最大值时即C B A A A ++==π9, 解： （Ⅰ）设A 1表示事件"一个试验组中，服用A 有效的小白鼠有i 只"，i= 0，1，2，B 1表示事件"一个试验组中，服用B 有效的小白鼠有i 只"，i= 0，1，2，依题意有.943232)(,9432312)(21=⨯==⨯⨯=A P A P.2121212)(.412121)(10=⨯⨯==⨯=B P B P 所求的概率为P = P （B 0·A 1）+ P （B 0·A 2）+ P （B 1·A 2）= 942194419441⨯+⨯+⨯.94=（Ⅱ）ξ的可能值为0，1，2，3且ξ~B （3，94）,729125)95()0(3===ξP ,243100)95(94)1(213=⨯⨯==C P ξ ,2438095)94()2(223=⨯⨯==C P ξ .72964)94()3(3===ξPξ的分布列为数学期望.34943=⨯=ξE10, 解法：（Ⅰ）由已知l 2⊥MN ，l 2⊥l 1，MN l 1 = M ， 可得l 2⊥平面ABN.由已知MN ⊥l 1，AM = MB = MN ， 可知AN = NB 且AN ⊥NB 又AN 为 AC 在平面ABN 内的射影， ∴ AC ⊥NB （Ⅱ）∵ Rt △CAN = Rt △CNB ， ∴ AC = BC ，又已知∠ACB = 60°， 因此△ABC 为正三角形。