2007年全国普通高等学校招生统一考试上海卷
2007年普通高考上海卷化学试题解析

2007年普通高等学校招生全国统一考试(上海卷)化学解析第I 卷(共66分)相对原子质量:H :1 C :12 N :14 O :16 Na :23 Mg :24 S :32 K :39 Fe :56 Ba :137 一、选择题(本题共10分),每小题2分,只有一个正确选项,答案涂写在答题纸上。
1.近期我国冀东渤海湾发现储量达10亿吨的大型油田。
下列关于石油的说法正确的是A 石油属于可再生矿物能源 B 石油主要含有碳、氢两种元素C 石油的裂化是物理变化 D 石油分馏的各馏分均是纯净物1.B 【解析】本题考查的是石油的组成及性质等知识点。
煤、石油等化石能源属于不可再生能源,故A 错;石油的裂化是将碳链较长的烃断裂成碳链较短的烃,所以石油的裂化是化学变化,C 错;石油分馏是依据蒸馏原理将石油中各成分按沸点范围进去分离,得到的各馏分是处于某一温度范围内的混合物,故D 错。
2.23592U 是重要的核工业原料,在自然界的丰度很低。
23592U 的浓缩一直为国际社会关注。
下列有关23592U 说法正确的是A 23592U 原子核中含有92个中子 B 23592U 原子核外有143个电子C 23592U 与23892U 互为同位素 D 2359223592U 与23892U 互为同素异形体2.C 【解析】本题考查的是元素及原子结构知识,对于原子X AZ,Z 表示的是质子数,A表示的是质量数(质子数+中子数=质量数),故A 选项错误;对于原子而言,质子数等于核外电子数,故B 错误;同种元素的不同核素互称为同位素,故C 正确,D 错误。
3.下列有关葡萄糖的说法错误的是A 葡萄糖的分子式是C 6H 12O 6B 葡萄糖能发生银镜反应C 葡萄糖是人体重要的能量来源D 葡萄糖属于高分子化合物3.D 【解析】本题考查的是葡萄糖的结构及性质以及高分子化合物的概念。
葡萄糖中含有醛基,故B 正确;人体从食物中摄取的淀粉、蔗糖等最终都转化为葡萄糖供细胞使用,因此C 正确;一般把相对分子质量大于10000的分子称为高分子,如淀粉、蛋白质等,故D 错。
2007年高考数学卷(上海.理)含答案

2007年全国普通高等学校招生统一考试(上海卷)数学试卷(理工农医类)考生注意:1.答卷前,考生务必将姓名、高考准考证号、校验码等填写清楚.2.本试卷共有21道试题,满分150分.考试时间120分钟.请考生用钢笔或圆珠笔将答案直接写在试卷上.一.填空题(本大题满分44分)本大题共有11题,只要求直接填写结果,每个空格填对得4分,否则一律得零分.1.函数3)4lg(--=x x y 的定义域是 .2.若直线1210l x my ++=: 与直线231l y x =-:平行,则=m .3.函数1)(-=x xx f 的反函数=-)(1x f .4.方程 96370x x -•-=的解是 .5.若x y ∈+R ,,且14=+y x ,则x y •的最大值是 . 6.函数⎪⎭⎫ ⎝⎛+⎪⎭⎫ ⎝⎛+=2πsin 3πsin x x y 的最小正周期=T .7.在五个数字12345,,,,中,若随机取出三个数字,则剩下两个数字都是奇数的概率是 (结果用数值表示).8.以双曲线15422=-y x 的中心为焦点,且以该双曲线的左焦点为顶点的抛物线方程是 . 9.对于非零实数a b ,,以下四个命题都成立: ① 01≠+aa ; ② 2222)(b ab a b a ++=+; ③ 若||||b a =,则b a ±=; ④ 若ab a =2,则b a =.那么,对于非零复数a b ,,仍然成立的命题的所有序号是 . 10.在平面上,两条直线的位置关系有相交、平行、重合三种. 已知αβ,是两个相交平面,空间两条直线12l l ,在α上的射影是直线12s s ,,12l l ,在β上的射影是直线12t t ,.用1s 与2s ,1t 与2t 的位置关系,写出一个总能确定1l 与2l 是异 面直线的充分条件: . 11.已知P 为圆1)1(22=-+y x 上任意 一点(原点O 除外),直线OP 的倾斜角为θ弧度,记||OP d =. 在右侧的坐标系中,画出以()d θ, 为坐标的点的轨迹的大致图形为二.选择题(本大题满分16分)本大题共有4 题,每题都给出代号为A ,B ,C ,D 的四个结论,其中有且只有一个结论是正确的,必须把正确结论的代号写在题后的圆括号内,选对得4分,不选、选错或者选出的代号超过一个(不论是否都写在圆括号内),一律得零分.12.已知a b ∈R ,,且i ,i 2++b a (i 是虚数单位)是实系数一元二次方程02=++q px x 的两个根,那么p q ,的值分别是( ) A.45p q =-=, B.43p q =-=, C.45p q ==,D.43p q ==,13.设a b ,是非零实数,若b a <,则下列不等式成立的是( ) A.22b a < B.b a ab 22< C.ba ab 2211< D.b aa b < 14.直角坐标系xOy 中,i j ,分别是与x y ,轴正方向同向的单位向量.在直角三角形 ABC 中,若j k i j i+=+=3,2,则k 的可能值个数是( )A.1 B.2 C.3 D.415.设)(x f 是定义在正整数集上的函数,且)(x f 满足:“当2()f k k ≥成立时,总可推 出(1)f k +≥2)1(+k 成立”.那么,下列命题总成立的是( ) A.若(3)9f ≥成立,则当1k ≥时,均有2()f k k ≥成立 B.若(5)25f ≥成立,则当5k ≤时,均有2()f k k ≥成立CB1C 1B1AAC.若49)7(<f 成立,则当8k ≥时,均有2)(k k f <成立 D.若25)4(=f 成立,则当4k ≥时,均有2()f k k ≥成立三.解答题(本大题满分90分)本大题共有6题,解答下列各题必须写出必要的步骤.16.(本题满分12分)如图,在体积为1的直三棱柱111C B A ABC -中,1,90===∠BC AC ACB.求直线B A 1与平面C C BB 11所成角的大小(结果用反三角函数值表示). 17.(本题满分14分)在ABC △中,a b c ,,分别是三个内角A B C ,,的对边.若4π,2==C a ,5522cos=B ,求ABC △的面积S .18.(本题满分14分)本题共有2个小题,第1小题满分6分,第2小题满分8分.近年来,太阳能技术运用的步伐日益加快.2002年全球太阳电池的年生产量达到670兆瓦,年生产量的增长率为34%.以后四年中,年生产量的增长率逐年递增2%(如,2003年的年生产量的增长率为36%).(1)求2006年全球太阳电池的年生产量(结果精确到0.1兆瓦);(2)目前太阳电池产业存在的主要问题是市场安装量远小于生产量,2006年的实际安装量为1420兆瓦.假设以后若干年内太阳电池的年生产量的增长率保持在42%,到2010年,要使年安装量与年生产量基本持平(即年安装量不少于年生产量的95%),这四年中太阳电池的年安装量的平均增长率至少应达到多少(结果精确到0.1%)?19.(本题满分14分)本题共有2个小题,第1小题满分7分,第2小题满分7分. 已知函数0()(2≠+=x xax x f ,常数)a ∈R .(1)讨论函数)(x f 的奇偶性,并说明理由;(2)若函数)(x f 在[2)x ∈+∞,上为增函数,求a 的取值范围.20.(本题满分18分)本题共有3个小题,第1小题满分3分,第2小题满分6分,第3小题满分9分.如果有穷数列123n a a a a ,,,,(n 为正整数)满足条件n a a =1,12-=n a a ,…,1a a n =,即1+-=i n i a a (12i n =,,,),我们称其为“对称数列”.例如,由组合数组成的数列01m m m m C C C ,,,就是“对称数列”.(1)设{}n b 是项数为7的“对称数列”,其中1234b b b b ,,,是等差数列,且21=b ,114=b .依次写出{}n b 的每一项;(2)设{}n c 是项数为12-k (正整数1>k )的“对称数列”,其中121k k k c c c +-,,,是首项为50,公差为4-的等差数列.记{}n c 各项的和为12-k S .当k 为何值时,12-k S 取得最大值?并求出12-k S 的最大值;(3)对于确定的正整数1>m ,写出所有项数不超过m 2的“对称数列”,使得211222m -,,,,依次是该数列中连续的项;当m 1500>时,求其中一个“对称数列”前2008项的和2008S .21.(本题满分18分)本题共有3个小题,第1小题满分4分,第2小题满分6分,第3小题满分8分.我们把由半椭圆12222=+b y a x (0)x ≥与半椭圆12222=+cx b y (0)x ≤合成的曲线称作“果圆”,其中222c b a +=,0>a ,0>>c b .如图,点0F ,1F ,2F 是相应椭圆的焦点,1A ,2A 和1B ,2B 分别是“果圆”与x ,y轴的交点.(1)若012F F F △是边长为1的等边三角形,求“果圆”的方程;(2)当21A A >21B B 时,求ab的取值范围; (3的弦.试研究:是否存在实数k ,使斜率为k 平行弦的中点轨迹总是落在某个椭圆上?若存在,求出所有可能的k 值;若不存在,说明理由.2007年全国普通高等学校招生统一考试(上海卷)数学试卷(理工农医类)答案要点一、填空题(第1题至第11题) 1. {}34≠<x x x 且 2. 32-3.)(11≠-x x x4.7log 3 5.161 6. π 7. 3.0 8. )3(122+=x y 9.②④10. 21//s s ,并且1t 与2t 相交(//1t 2t ,并且1s 与2s 相交)11.二、选择题(第12题至第15题)题 号 1213 1415答 案ACB D三、解答题(第16题至第21题) 16.解法一: 由题意,可得体积11111122ABC V CC S CC AC BC CC ====△, ∴ 211==CC AA .连接1BC .1111111AC B C AC CC ⊥⊥,,⊥∴11C A 平面C C BB 11,11BC A ∠∴是直线B A 1与平面C C BB 11所成的角. 52211=+=BC CC BC ,51tan 11111==∠∴BC C A BC A ,则 11BC A ∠=55arctan . CB1B1A A1C即直线B A 1与平面C C BB 11所成角的大小为55arctan. 解法二: 由题意,可得 体积11111122ABC V CC S CC AC BC CC ∆====, 21=∴CC ,如图,建立空间直角坐标系. 得点(010)B ,,, 1(002)C ,,,1(102)A ,,. 则1(112)A B =--,,, 平面C C BB 11的法向量为(100)n =,,. 设直线B A 1与平面C C BB 11所成的角为θ,A 1与n 的夹角为ϕ, 则116cos 6A B n A Bn ϕ==-66arcsin ,66|cos |sin ===∴θϕθ,即直线B A 1与平面C C BB 11所成角的大小为66arcsin. 17.解: 由题意,得3cos 5B B =,为锐角,54sin =B ,10274π3sin )πsin(sin =⎪⎭⎫ ⎝⎛-=--=B C B A , 由正弦定理得 710=c , ∴ 111048sin 222757S ac B ==⨯⨯⨯=.18.解:(1)由已知得2003,2004,2005,2006年太阳电池的年生产量的增长率依次为 %36,%38,%40,%42.则2006年全球太阳电池的年生产量为8.249942.140.138.136.1670≈⨯⨯⨯⨯(兆瓦).(2)设太阳电池的年安装量的平均增长率为x ,则441420(1)95%2499.8(142%)x ++≥. 解得0.615x ≥.因此,这四年中太阳电池的年安装量的平均增长率至少应达到%5.61. 19.解:(1)当0=a 时,2)(x x f =, 对任意(0)(0)x ∈-∞+∞,,,)()()(22x f x x x f ==-=-, )(x f ∴为偶函数.当0≠a 时,2()(00)af x x a x x=+≠≠,, 取1±=x ,得 (1)(1)20(1)(1)20f f f f a -+=≠--=-≠,, (1)(1)(1)(1)f f f f ∴-≠--≠,,∴ 函数)(x f 既不是奇函数,也不是偶函数. (2)解法一:设122x x <≤, 22212121)()(x a x x a x x f x f --+=-[]a x x x x x x x x -+-=)()(21212121, 要使函数)(x f 在[2)x ∈+∞,上为增函数,必须0)()(21<-x f x f 恒成立.121204x x x x -<>,,即)(2121x x x x a +<恒成立.又421>+x x ,16)(2121>+∴x x x x . a ∴的取值范围是(16]-∞,.解法二:当0=a 时,2)(x x f =,显然在[2)+∞,为增函数.当0<a 时,反比例函数xa在[2)+∞,为增函数, xax x f +=∴2)(在[2)+∞,为增函数. 当0>a 时,同解法一.20.解:(1)设{}n b 的公差为d ,则1132314=+=+=d d b b ,解得 3=d , ∴数列{}n b 为25811852,,,,,,.(2)12112112-+--+++++++=k k k k k c c c c c c S k k k k c c c c -+++=-+)(2121 ,50134)13(42212-⨯+--=-k S k ,∴当13=k 时,12-k S 取得最大值.12-k S 的最大值为626. (3)所有可能的“对称数列”是: ① 22122122222221m m m ---,,,,,,,,,,;② 2211221222222221m m m m ----,,,,,,,,,,,; ③ 122221222212222m m m m ----,,,,,,,,,,; ④ 1222212222112222m m m m ----,,,,,,,,,,,. 对于①,当2008m ≥时,1222212008200722008-=++++= S . 当15002007m <≤时,200922122008222221----+++++++=m m m m S 2009212212---+-=m m m 1222200921--+=--m m m .对于②,当2008m ≥时,1220082008-=S . 当15002007m <≤时,2008S 122200821--=-+m m .对于③,当2008m ≥时,2008200822--=m m S .当15002007m <≤时,2008S 3222009-+=-mm .对于④,当2008m ≥时,2008200822--=m m S .当15002007m <≤时,2008S 2222008-+=-mm .21. 解:(1) ()()012(0)00F c F F -,,,,,021211F F b F F ∴=====,,于是22223744c a b c ==+=,,所求“果圆”方程为2241(0)7x y x +=≥,2241(0)3y x x +=≤. (2)由题意,得 b c a 2>+,即a b b a ->-222.2222)2(a c b b =+> ,222)2(a b b a ->-∴,得54<a b . 又21,222222>∴-=>a b b a c b . 45b a ⎫∴∈⎪⎪⎝⎭,. (3)设“果圆”C 的方程为22221(0)x y x a b +=≥,22221(0)y x x b c+=≤.记平行弦的斜率为k .当0=k 时,直线()y t b t b =-≤≤与半椭圆22221(0)x y x a b+=≥的交点是梦想不会辜负一个努力的人all`试题11P t ⎛⎫ ⎪ ⎪⎝⎭,与半椭圆22221(0)y x x b c +=≤的交点是Q t ⎛⎫- ⎪ ⎪⎝⎭. ∴ P Q ,的中点M ()x y ,满足 221,2a ct x b y t ⎧-⎪=-⎨⎪=⎩,得 122222=+⎪⎭⎫⎝⎛-b y c a x . b a 2<,∴ 22220222a c a c b a c b b ----+⎛⎫-=≠ ⎪⎝⎭. 综上所述,当0=k 时,“果圆”平行弦的中点轨迹总是落在某个椭圆上.当0>k 时,以k 为斜率过1B 的直线l 与半椭圆22221(0)x y x a b +=≥的交点是22232222222ka b k a b b k a b k a b ⎛⎫- ⎪++⎝⎭,. 由此,在直线l 右侧,以k 为斜率的平行弦的中点轨迹在直线x kab y 22-=上,即不在某一椭圆上. 当0<k 时,可类似讨论得到平行弦中点轨迹不都在某一椭圆上.。
2007年高考语文试题及参考答案(上海卷)

2007年全国普通高等学校招生全国统一考试(上海卷)语文一、阅读下文完成1——5题。
(15分)(1)“包豪斯”是一所由工艺学校和艺术学校合并而成的艺术设计学校。
二十世纪初成立于德国魏玛。
(2)包豪斯这个名字有些特别。
德文“Bau”指建造和建设。
“haus”的意思很多,可指房屋、住房、家、家园,也可指世家、企业、公司、商号等等。
创建者为学校取名“包豪斯”有“建设者之家”的意思,以区别于学院式的教育机构。
(3)学校的名称特别,来就学的人也与众不同。
招收的学生有刚从战场回来的,有工匠,有流浪汉,有失业者。
年龄从17岁到40岁都有,约三分之一是女性。
当然,更特别的还是学制和学习内容。
(4)学校的创建者认为,必须形成一个新的设计学派来影响本国的工业界,否则一个艺术家就不能实现他的理想。
学校设立了纺织、陶瓷、金工、玻璃、等科目。
学生进校后先学半年初步课程,然后一面学习理论课,一面在车间中学习手工艺,三年以后考试合格,可以取得“匠师”资格。
学校强调自由创造,反对模仿因袭。
在设计中注重实用需求,摒弃虚浮奢华;讲求材料自身的质地和色彩,反对附加的修饰和包装。
他们注重发挥结构本身的形式美,采用不对称的构图法,灵活多样、造型简洁,他们的造型艺术风格被称为“包豪斯风格”。
这种风格体现在建筑中,也体现在器皿、家具、灯具、织物等物品的设计上,家具中的钢管椅子就是他们最具有代表性的成果之一。
(5)有人以为包豪斯的成就在于创立了现代艺术教育和现代主义的设计风格。
其实,创建者的明确目标,是要彻底摧毁传统的关于艺术的“神话”,这是包豪斯的理念中最具代革命性的核心。
包豪斯所尝试的,是把艺术从贵州和富人的高堂华厦中、从艺术的“神坛”上解放出来。
它要让艺术家变成这样一种人,即能用他的灵感和技艺为千千万万人塑造美、营造舒适生活的工作者。
换句话就,在包豪斯的观念中,艺术家的任务,是让每一个人,特别是那些平凡的工人、农民、小职员,都过上“人”所应该有的生活,让每一个都能平等地享受有生活的尊严。
2007年高考文科数学试题及参考答案(上海卷)

尔乃西风古寺肋,淹滞青燐;落日荒丘,零星白骨。楸榆飒飒,蓬艾萧萧。隔雾圹以啼猿,绕烟塍而泣鬼。自为红绡帐里,公子情深;始信黄土垄中,女儿命薄!汝南泪血,斑斑洒向西风;梓泽余衷,默默诉凭冷月。
眉黛烟青,昨犹我画;指环玉冷,今倩谁温?鼎炉之剩药犹存,襟泪之余痕尚渍。镜分鸾别,愁开麝月之奁;梳化飞龙,哀折檀云之齿。委金钿于草莽,拾翠阖(音e,盍代勺中之·)于尘埃。楼空鴲(音zhi,左支右鸟)鹊,徒悬七夕之针;带断鸳鸯,谁续五丝之缕?
况乃金天属节,白帝司时,孤衾有梦,空室无人。桐阶月暗,芳魂与倩影同销;蓉帐香残,娇喘共细言皆绝。连天衰草,岂独蒹葭;匝地悲声,无非蟋蟀。露苔晚砌,穿帘不度寒砧;雨荔秋垣,隔院希闻怨笛。芳名未泯,檐前鹦鹉犹呼;艳质将亡,槛外海棠预老。捉迷屏后,莲瓣无声;斗草庭前,兰芽枉待。抛残绣线,银笺彩缕谁裁;折断冰丝,金斗御香未熨。
。
评价: 《芙蓉女儿诔》是讨伐封建势力的檄文。“孰料鸠鸩恶其高,鹰鸷翻遭罘罬;铃施妒其臭,茝兰竟被芟鉏……高标见嫉,闺帏恨比长沙;贞烈遭危,巾帼惨于羽野”。他痛骂那些狐群狗党的小人,他痛恨封建统治者的狠毒残忍。他把晴雯看作“高标见嫉”的贾谊;看作“贞烈遭危”的鲸,这种评价是非常之高的。
书上说是写给晴雯的,但是也有说时写给黛玉的,晴雯其实是被当作黛玉的影子的.记得有一回里面王夫人说到晴雯说的是:长得有点象林妹妹的.
若夫鸿蒙而居囤,寂静以处,虽临于兹,余亦莫睹。搴烟萝而为步幛,列枪蒲而森行伍。警柳眼之贪眠,释莲心之味苦。素女约于桂岩,宓妃迎于兰渚。弄玉吹笙,寒簧击敌。征嵩岳之妃,启骊山之姥。龟呈洛浦之灵,兽作咸池之舞,潜赤水兮龙吟,集珠林兮凤翥。爰格爰诚,匪簠匪筥。发轫乎霞城,返旌乎玄圃。既显微而若通复氤氲而倏阻。离合兮烟云,空蒙兮雾雨。尘霾敛兮星高,溪山丽兮月午。何心意之忡忡,若寤寐之栩栩。余乃欷觑怅望,泣涕彷徨。人语兮寂历,天籁兮筼筜。鸟惊散而飞,鱼唼喋以响。志哀兮是祷,成礼兮期祥。呜呼哀哉!尚飨!
2007年高考试题——数学理(上海卷)

2007年全国普通高等学校招生统一考试(上海卷)数学试卷(理工农医类)考生注意:1.答卷前,考生务必将姓名、高考准考证号、校验码等填写清楚.2.本试卷共有21道试题,满分150分.考试时间120分钟.请考生用钢笔或圆珠笔将答案直接写在试卷上.一.填空题(本大题满分44分)本大题共有11题,只要求直接填写结果,每个空格填对得4分,否则一律得零分. 1.函数3)4lg(--=x x y 的定义域是 .〖解析〗4030x x ->⎧⎨-≠⎩⇒ {}34≠<x x x 且答案:{}34≠<x x x 且.2.若直线1210l x my ++=: 与直线231l y x =-:平行,则=m . 〖解析〗2123113m m =≠⇒=---. 答案:32-.3.函数1)(-=x x x f 的反函数=-)(1x f .【解析】由(1)11x yy x y x y =⇒=≠⇒--()111x f x x x -=≠-(). 答案:)(11≠-x x x. 4.方程 96370x x -∙-=的解是 .〖解析〗2(3)63703731x xxx-⋅-=⇒==-或(舍去),3log 7x ∴=. 答案:3log 7x =.5.已知x y ∈+R ,,且14=+y x ,则x y ∙的最大值是 .〖解析〗211414()44216x y xy x y +=⋅≤=,当且仅当x =4y=12时取等号. 答案:161.6.函数⎪⎭⎫⎝⎛+⎪⎭⎫ ⎝⎛+=2πsin 3πsin x x y 的最小正周期=T . 〖解析〗sin()sin()(sin cos cos sin )cos 3233y x x x x x ππππ=++=+2111cos 2sin cos cos sin 222422xx x x x +=+=+⋅1sin(2)423x π=++ T π∴=. 答案:π.7.在五个数字12345,,,,中,若随机取出三个数字,则剩下两个数字都是奇数的概率是 (结果用数值表示).〖解析〗212335310C C C =. 答案:3.0.8.以双曲线15422=-y x 的中心为焦点,且以该双曲线的左焦点为顶点的抛物线方程是 .〖解析〗双曲线22145x y -=的中心为O (0,0),该双曲线的左焦点为F (-3,0),则抛物线的顶点为(-3,0),焦点为(0,0),所以p=6,所以抛物线方程是:212(3)y x =+.答案:)3(122+=x y .9.对于非零实数a b ,,以下四个命题都成立: ① 01≠+aa ; ② 2222)(b ab a b a ++=+; ③ 若||||b a =,则b a ±=; ④ 若ab a =2,则b a =.那么,对于非零复数a b ,,仍然成立的命题的所有序号是 . 〖解析〗对于①:解方程10a a +=得 a =± i ,所以非零复数 a = ± i 使得10a a+=, ①不成立;②显然成立;对于③:在复数集C 中,|1|=|i |,则a b = ↵a b =±,所以③不成立;④显然成立。
高考真题汇编:DNA分子结构和复制

1.λ噬菌体的线性双链DNA两端各有一段单链序列。
这种噬菌体在侵染大肠杆菌后其DNA 会自连环化(如图),该线性分子两端能够相连的主要原因是()A.单链序列脱氧核苷酸数量相等B.分子骨架同为脱氧核糖与磷酸C.单链序列的碱基能够互补配对D.自连环化后两条单链方向相同【来源】2022年新高考广东生物高考真题【答案】C2.某同学欲制作DNA双螺旋结构模型,已准备了足够的相关材料下列叙述正确的是()A.在制作脱氧核苷酸时,需在磷酸上连接脱氧核糖和碱基B.制作模型时,鸟嘌呤与胞嘧啶之间用2个氢键连接物相连C.制成的模型中,腺嘌呤与胞嘧啶之和等于鸟嘌呤和胸腺嘧啶之和D.制成的模型中,磷酸和脱氧核糖交替连接位于主链的内侧【来源】2022年6月新高考浙江生物高考真题【答案】C3.已知5-溴尿嘧啶(BU)可与碱基A或G配对。
大肠杆菌DNA上某个碱基位点已由A-T 转变为A-BU,要使该位点由A-BU转变为G-C,则该位点所在的DNA至少需要复制的次数是()A.1 B.2 C.3 D.4【来源】海南省2021年普通高中学业水平选择性考试生物试题【答案】B4.下列有关细胞内的DNA及其复制过程的叙述,正确的是()A.子链延伸时游离的脱氧核苷酸添加到3′端B.子链的合成过程不需要引物参与C.DNA每条链的5′端是羟基末端D.DNA聚合酶的作用是打开DNA双链【来源】辽宁省2021年普通高中学业水平等级性考试生物试题【答案】A5.酵母菌的DNA中碱基A约占32%,关于酵母菌核酸的叙述错误的是()A.DNA复制后A约占32% B.DNA中C约占18%C.DNA中(A+G)/(T+C)=1 D.RNA中U约占32%【来源】北京市2021年普通高中学业水平等级性考试生物试题【答案】D6.利用农杆菌转化法,将含有基因修饰系统的T-DNA 插入到水稻细胞M 的某条染色体上,在该修饰系统的作用下,一个DNA 分子单链上的一个C 脱去氨基变为U,脱氨基过程在细胞M 中只发生一次。
2007年上海英语高考试题及答案

2007年普通高等学校招生统一考试上海英语试卷第1卷(共105分)I. Listening ComprehensionPart A Short ConversationsDirections:In Part A. you will hear ten short conversations between two speakers。
At the end of each conversation, a question will be asked about what was said。
The conversations and the questions will be spoken only once。
After you hear a conversation and the question about it. Read the four possible answers on your paper。
and decide which one is the best answer to the question you have heard。
1。
A. Coke. B。
Coffee. C。
Tea。
D。
Water.2. A. At a restaurant. B. At a studio。
C。
At a concert. D。
At a theatre。
3。
A. Relieved。
B. Worried. C。
Confused。
D. Depressed.4。
A。
The Browns。
B。
The Browns’ son。
C。
The postman.D。
The neighbour.5。
A. 7:00。
B. 7:10。
C。
9:00。
D。
9:10.6. A。
The ring is not hers。
B. She doesn't have gold rings.C。
She prefers gold to silver. D。
2007年上海卷高考真题英语试卷-学生用卷

2007年上海卷高考真题英语试卷-学生用卷一、单项选择1、【来源】 2007年高考真题上海卷第25题Leaves are found on all kinds of trees, but they differ greatly size and shape.A. onB. fromC. byD. in2、【来源】 2007年高考真题上海卷第26题The mayor has offered a reward of $5000 to who can capture the tiger alive or dead.A. bothB. othersC. anyoneD. another3、【来源】 2007年高考真题上海卷第27题Alan is a careful driver, but he drives of my friends.A. more carefullyB. the most carefullyC. less carefullyD. the least carefully4、【来源】 2007年高考真题上海卷第28题2008~2009学年北京东城区高一下学期月考2018~2019学年天津河东区高一上学期期中第25题1分—Did you tidy your room?—No, I was going to tidy my room but I visitors.A. hadB. haveC. have hadD. will have5、【来源】 2007年高考真题上海卷第29题2020~2021学年4月甘肃兰州城关区甘肃省兰州第一中学高一下学期月考第3题1分2020~2021学年4月甘肃兰州城关区甘肃省兰州第一中学高一下学期月考第3题1分2017~2018学年北京西城区西城外国语学校高三上学期期中第27题1分2020~2021学年4月甘肃兰州城关区甘肃省兰州第一中学高一下学期月考第3题1分—Guess what! I have got A for my term paper.—Great! You read widely and put a lot of work into it.A. mustB. shouldC. must haveD. should have6、【来源】 2007年高考真题上海卷第30题2010~2011学年北京东城区高三上学期期中2020~2021学年天津南开区天津大学附属中学高二下学期期中A卷第29题1分With the help of high technology, more and more new substances in the past years.A. discoveredB. have discoveredC. had been discoveredD. have been discovered7、【来源】 2007年高考真题上海卷第31题2019~2020学年广东深圳南山区华侨城中学高二上学期期中第10题1分—How was the televised debate last night?—Super! Rarely so much media attention.A. a debate attractedB. did a debate attractC. a debate did attractD. attracted a debate8、【来源】 2007年高考真题上海卷第32题The little boy came riding full speed down the motorway on his bicycle.it was!A. What a dangerous sceneB. What dangerous a sceneC. How a dangerous sceneD. How dangerous the scene9、【来源】 2007年高考真题上海卷第33题2008~2009学年北京东城区高一下学期月考2020~2021学年10月天津南开区天津市南开中学高一上学期月考第24题1分Pop music is such an important part of society ______ it has even influenced our language.A. asB. thatC. whichD. where10、【来源】 2007年高考真题上海卷第34题2018~2019学年10月广东深圳福田区深圳市高级中学高中部高二月考第35题1分After a knock at the door, the child heard his mother's voice him.A. callingB. calledC. being calledD. to call11、【来源】 2007年高考真题上海卷第35题2020~2021学年10月天津南开区天津市南开中学高一上学期月考第29题1分There is nothing more I can try you to stay, so I wish you good luck.A. being persuadedB. persuadingC. to be persuadedD. to persuade12、【来源】 2007年高考真题上海卷第36题2019~2020学年广东深圳罗湖区深圳市翠园中学期末第5题1分2019~2020学年广东深圳罗湖区深圳罗湖外语学校高中部高二上学期期末理科第5题1分The Town Hall in the 1800's was the most distinguished building at that time.A. to be completedB. having been completedC. completedD. being completed13、【来源】 2007年高考真题上海卷第37题2017~2018学年12月江苏徐州云龙区徐州市王杰中学高一上学期月考第23题1分His movie won several awards at the film festival,was beyond his wildest dream.A. whichB. thatC. whereD. it14、【来源】 2007年高考真题上海卷第38题2008~2009学年北京东城区高一下学期月考Small sailboats can easily turn over in the water______ they are not managed carefully.A. thoughB. beforeC. untilD. if15、【来源】 2007年高考真题上海卷第39题2018~2019学年广东深圳福田区深圳市高级中学高中部高一下学期期中第55题1分he referred to in his article was unknown to the general reader.A. ThatB. WhatC. WhetherD. Where16、【来源】 2007年高考真题上海卷第40题2018~2019学年广东深圳福田区深圳市高级中学高中部高一下学期期中第56题1分The traditional view is we sleep because our brain is "programmed" to make us do so.A. whenB. whyC. whetherD. that17、【来源】 2007年高考真题上海卷第41题2018~2019学年12月天津南开区天津市南开中学高三上学期月考第21题1分At minus 130℃, a living cell can be for a thousand years.A. sparedB. protectedC. preservedD. developed18、【来源】 2007年高考真题上海卷第42题Since Tom downloaded a virus into his computer, he can not open the file now.A. readilyB. horriblyC. accidentallyD. irregularly19、【来源】 2007年高考真题上海卷第43题My morning includes jogging in the park and reading newspapers over breakfast.A. drillB. actionC. regulationD. routine20、【来源】 2007年高考真题上海卷第44题John was dismissed last week because of his attitude towards his job.A. informalB. casualC. determinedD. earnest二、完形填空21、【来源】 2007年高考真题上海卷(A篇)第45~54题Being alone in outer space can be frightening. That is one reason why astronauts on solo(单独的)space flights were given plenty of work to keep them1. They were also in constant communication with people on the earth.2, being with people from whom you cannot get away might be even harder than being alone. This is what happens on long submarine(潜水艇)voyages. It will also happen on3space flights in the future. Will there be special problems of adjustment under such conditions?Scientists have studied the reactions of men to one another during long submarine voyages. They have found that the longer the voyage lasts, the more serious the problemof4is. When men are5together for a long period, they begin to feel uneasy. Everyone has little habits of speaking and behaving that are ordinarily acceptable. In the limited space over a long period of time, however, these little habits may becomevery6.Apparently, although no one wants to be7all the time, everyone needs some degree of privacy. When people are enclosed together, they are in what is called a stress situation. That means that they are under an unusual amount of8or stress.People who are well-adjusted are able to9stress situations better than others. That is one reason why so much care is taken in10our astronauts.These men undergo a long period of testing and training. One of the things tested is their behaviour under stress.A. tiredB. asleepC. consciousD. busyA. So farB. After allC. HoweverD. ThereforeA. longB. fastC. dangerousD. directA. fuelB. entertainmentC. AdjustmentD. healthA. shut upB. held upC. brought upD. picked upA. pleasingB. annoyingC. commonD. valuableA. noisyB. aloneC. personalD. sociableA. emphasisB. conflictC. powerD. pressureA. handleB. createC. affectD. investigateA. becomingB. choosingC. orderingD. promoting22、【来源】 2007年高考真题上海卷(B篇)第55~64题One topic is rarely mentioned in all the talk of improving standards in our schools: the almost complete failure of foreign-language teaching. As a French graduate who has taught for more than twenty-five years, I believe I have some idea of why the failure is so total.1the faults already found out in the education system as a whole—such as child—centred learning, the "discovery" method, and the low expectations by teachers of pupils—there have been severalserious2which have a direct effect on language teaching.The first is the removal from the curriculum(课程)of the thorough teaching ofEnglish3. Pupils now do not know a verb from a noun, the subject of a sentence from its object, or the difference between the past, present, or future.Another important error is mixed-ability teaching, or teaching in ability groupsso4that the most able pupils are5and are bored while the least able are lost and6bored. Strangely enough, few head teachers seem to be in favour of mixed-ability school football teams.Progress depends on memory, and pupils start to forget immediately they stophaving7lessons. This is why many people who attended French lessons atschool, even those who got good graded, have forgotten it a few yearslater.8they never need it, they do not practice it.Most American schools have accepted what is inevitable and9modern languages, even Spanish, from the curriculum. Perhaps it is time for Britain to do the same, andstop10resource on a subject which few pupils want or need.A. due toB. an addition toC. Instead ofD. In spite ofA. errorsB. situationsC. systemsD. methodsA. vocabularyB. cultureC. grammarD. literatureA. wideB. similarC. separateD. uniqueA. kept outB. turned downC. held backD. left behindA. surprisinglyB. individuallyC. equallyD. hardlyA. extraB. traditionalC. basicD. regularA. AlthoughB. BecauseC. UntilD. UnlessA. restoredB. absorbedC. prohibitedD. withdrawnA. wastingB. focusingC. exploitingD. sharing三、阅读理解23、【来源】 2007年高考真题上海卷(A篇)第65~68题2015~2016学年河南洛阳孟津县孟津县第一高级中学高一上学期期末第4~7题8分(每题2分) What do you want to be when you grow up? A teacher? A doctor? How about an ice-cream taster?Yes, there really is a job where you can get paid to taste ice cream. Just ask John Harrison, an "Official Taste Tester" for the past 21 years. Testing helps manufacturers to be sure of a product's quality. During his career Harrison has been responsible for approving large quantities of the sweet ice cream—as well as for developing over 75 flavors (味道).Some people think that it would be easy to do this job; after all, you just have to like ice cream, right? No—there's more to the job than that, says Harrison, who has a degree in chemistry. He points out that a dairy or food-science degree would be very useful to someone wanting a career in this "cool" field.In a typical morning on the job, Harrison tastes and assesses 60 ice-cream samples. He lets the ice cream warm up to about 12°F. Harrison explains, "You get more flavor from warmer ice cream, which is why some kids like to stir (搅拌) it, creating ice-cream soup."While the ice cream warms up, Harrison looks over the samples and grades each one on its appearance. "Tasting begins with the eyes, " he explains. He checks to see if the ice cream is attractive and asks himself, "Does the product have the color expected from that flavor? " Next it's time to taste!Continuing to think up new ideas, try out new flavors, and test samples from so many kinds of ice cream each day keeps Harrison busy but happy—working at one cool job.(1) What is John Harrison's job?A. An official.B. An ice-cream manufacturer.C. A chemist.D. An ice-cream taster.(2) According to John Harrison, to be qualified in the "cool field", it is helpfulto.A. think up new ideas every dayB. keep a diary of daily workC. have a degree in related subjectsD. find out new flavors each day(3) What does Harrison do first when testing ice cream?A. He stirs the ice cream.B. He lets the ice cream warm up.C. He tastes the flavor of the ice cream.D. He examines the color of the ice cream.(4) Which of the following is probably the best title for the passage?A. One Cool JobB. Flavors of Ice CreamC. Tasting with EyesD. John Harrison's Life24、【来源】 2007年高考真题上海卷(C篇)第72~75题Mail carriers will be delivering some good news and some bad news this week.The bad news: Stamp prices are expected to rise 2 cents in May to 41 cents, the Postal Regulatory Commission announced yesterday. The good news: With the introduction of a "forever stamp, "it may be the last time Americans have to use annoying 2-or 3-cent stamps to make up postage differences.Beginning in May, people would be able to purchase the stamps in booklets of 20 at the regular rate of a first-class stamp. As the name implies, "forever stamps" will keep their first-class mailing value forever, even when the postage rate goes up.The new "forever stamp"is the United States Postal Service's(USPS)answer to the complaints about frequent rate increased. The May increase will be the fifth in a decade. Postal races have risen because of inflation(通货膨胀),competition from online bill paying, and the rising costs of employee benefits, including health care, says Mark saunters, a spokesman for USPS.The USPS expects some financial gain from sales of the "forever stamp" and the savings frown not printing as many 2-or 3-cent stamps. "It' not your grandfather's stamp, " says Mr. Saunters. "TAL#NBSP It could be your great-grandchildren's stamp."Other countries, including Canada, England, and Finland use similar stamps.Don chilling, who has collected stamps for 50 years, says he's interested in the public's reaction. "This is an entirely new class of stamps, " Mr, chilling says. He adds that he'll buy the stamps because he will be able to use them for a long period of time, not because they could make him rich—the volume printed will be too large for collectors. "We won't be able to send our kids to college on these, " he says, laughing.The USPS board of governors has yet to accept the Postal Regulatory Commission's decision, but tends to follow its recommendations. No plans have been announced yet for the design of the stamps.(1) The main purpose of introducing a "forever stamp" is.A. to reduce the cost of printing 2-or 3-cent stampsB. to help save the consumers' cost on first-class mailingC. to respond to the complaints about rising postal ratsD. to compete with online bill paying(2) By saying "It could be your great-grandchildren's stamp", Mr Saunters means that forever stamps.A. could be collected by one's great-grandchildrenB. might be very precious in great-grandchildren's handsC. might have been inherited from one's great-grandma-thersD. could be used by one's great-grandchildren even decades later(3) Which of the following is true according to the passage?A. The investment in forever stamps will bring adequate reward.B. America will be the first country to issue forever stamps.C. The design of the "forever stamp" remains to be revealed.D. 2-or 3-cent stamps will no longer be printed in the future.(4) What can be concluded from the passage?A. With forever stamps, there will be no need to worry about rate changes.B. Postal workers will benefit most from the sales of forever stamps.C. The inflation has become a threat to the sales of first-class stamps.D. New interest will be aroused in collecting forever stamps.25、【来源】 2007年高考真题上海卷(D篇)第76~79题The traditional tent cities at festivals such as Glastonbury may never be the same again. In a victory of green business that is certain to appeal to environmentally-aware music-lovers, a design student is to receive financial support to produce eco-friendly tents made of cardboard that can be recycled after the bands and the crowds have gone home.Major festivals such as Glastonbury throw away some 10, 000 abandoned tents at the end of events each year. For his final year project at the University of the West of England, James Dunlop came up with a material that can be recycled. And to cope with the British summer, the cardboard has been made waterproof.Taking inspiration from a Japanese architect, who has used cardboard to make big buildings including churches, Mr. Dunlop used cardboard material for his tents, which he called Myhabs. The design won an award at the annual New Designers Exhibition after Mr. Dunlop graduated from his product design degree and he decided to try to turn it into a business.To raise money for the idea, he toured the City's private companies which fund new business and found a supporter in the finance group Mint. He introduced his idea to four of Mint's directors and won their support. Mint has committed around £500, 000 to MyHab and taken a share of 30 per cent in Mr.Dunlop's business.The first Myhabs should be tested at festivals this summer, before being marketed fully next year.Mr. Dunlop said that the design, which accommodates two people, could have other uses, such as for disaster relief and housing for the London Olympics.For music events, the cardboard houses will be ordered online and put up at the sites by the Myhab team before the festival-goers arrive and removed by the company afterwards. They can be personalized and the company will offer reductions on the expense if people agree to sell exterior (外部的)advertising space.The biggest festivals attract tens of thousands of participants, with Glastonbury having some 150, 000 each year. Altogether there are around 100 annual music festivals where people camp in the UK. The events are becoming increasingly environmentally conscious.(1) "Eco-friendly tents" in paragraph 1 refer to tents.A. economically desirableB. favorable to the environmentC. for holding music performancesD. designed for disaster relief(2) Mr. Dunlop established his business.A. independently with an interest-free loan from MintB. with the approval of the City's administrationC. in partnership with a finance groupD. with the help of a Japanese architect(3) It is implied in the passage that.A. the weather in the UK is changeable in summerB. most performances at British festivals are given in the open airC. the cardboard tents produced by Mr. Dunlop can be user-tailoredD. cardboard tents can be easily put up and removed by users.(4) The passage is mainly concerned with.A. an attempt at developing recyclable tentsB. some efforts at making full use of cardboardsC. an unusual success of a graduation projectD. the effects of using cardboard tents on music festivals26、【来源】 2007年高考真题上海卷(E篇)第80~84题Read the following text and choose the most suitable heading from A-F for each paragraph. There is one extra heading which you do not need.An interview with wanton Marsalis, a noted jazz musician1There were the older jazz musicians who hung around our house when I was young. I saw how much they practiced, how serious they were about their art. I knew then I had to work just as hard if I wanted to succeed. Of course, my father inspired me a lot, and many teachers took the time to nurture any talent and the talents of other students in our school.2Yes. We've done such a poor job with music education because, as a society, we haven't maintained the kind of education that a true artist and musician needs. Young people haven't been able to equate romance and talent with music. For instance, most of the people who make it in the music industry today have to look good. How they sound is secondary. Sarah Vaughan, Bessie Smith, Ella Fitzgerald-those big, romantic queens of jazz music wouldn't snake it in today's music industry, and that's a shar me. We need to teach young people about the alternative.3Around the world people make music that, if you listen carefully to it, sounds a little like the cadence of their language. I'd call it folk music. When I'd away from home, I make a point of listening to regional folk music, not what's on the radio.4The same music is on the radio all over the world, and the American sound is overwhelming. Even the pop music that's produced and created in foreign countries has that American beat, that under score of bunk. As a musician, I'm not interested in hearing recycled her signs of the same genre over and over. Any music that doesn't have a development section just isn't interest ding to me.5The music press has so much to introduce these days, and jazz is just a small fraction of it. Because some people are intimidated by jazz, they don't cover it unless it's a big name. New jazz musicians don't get much of break. A lot of editors don't say anything about jazz these days unless it's Marsalis. That's ashame. What VH1 is doing with their Save the Music campaign is phenomenal, They're getting all these instruments out to needy kids. It's the kind of thing all networks should be doing.A. Do established musicians have a responsibility to guide and assist young up-and-coming musicians?B. Did anyone promote your musical education when you were growing up?C. What kind of "world music" do you enjoy?D. What' your comment on pop music?E. Does the contemporary music press give jazz the coverage it deserves?F. What' wrong with the music on the radio?四、翻译27、【来源】 2007年高考真题上海卷第85题翻译他们的新房子离学校很远。
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2007年全国普通高等学校招生统一考试(上海卷)数学试卷(理工农医类)考生注意:1.答卷前,考生务必将姓名、高考准考证号、校验码等填写清楚.2.本试卷共有21道试题,满分150分.考试时间120分钟.请考生用钢笔或圆珠笔将答案直接写在试卷上.一.填空题(本大题满分44分)本大题共有11题,只要求直接填写结果,每个空格填对得4分,否则一律得零分.1.函数3)4lg(--=x x y 的定义域是 .2.若直线1210l x my ++=: 与直线231l y x =-:平行,则=m .3.函数1)(-=x xx f 的反函数=-)(1x f .4.方程 96370x x -•-=的解是 .5.若x y ∈+R ,,且14=+y x ,则x y •的最大值是 . 6.函数⎪⎭⎫ ⎝⎛+⎪⎭⎫ ⎝⎛+=2πsin 3πsin x x y 的最小正周期=T .7.在五个数字12345,,,,中,若随机取出三个数字,则剩下两个数字都是奇数的概率是 (结果用数值表示).8.以双曲线15422=-y x 的中心为焦点,且以该双曲线的左焦点为顶点的抛物线方程是 . 9.对于非零实数a b ,,以下四个命题都成立: ① 01≠+aa ; ② 2222)(b ab a b a ++=+; ③ 若||||b a =,则b a ±=; ④ 若ab a =2,则b a =.那么,对于非零复数a b ,,仍然成立的命题的所有序号是 . 10.在平面上,两条直线的位置关系有相交、平行、重合三种. 已知αβ,是两个相交平面,空间两条直线12l l ,在α上的射影是直线12s s ,,12l l ,在β上的射影是直线12t t ,.用1s 与2s ,1t 与2t 的位置关系,写出一个总能确定1l 与2l 是异 面直线的充分条件: . 11.已知P 为圆1)1(22=-+y x 上任意 一点(原点O 除外),直线OP 的倾斜角为θ弧度,记||OP d =. 在右侧的坐标系中,画出以()d θ, 为坐标的点的轨迹的大致图形为二.选择题(本大题满分16分)本大题共有4 题,每题都给出代号为A ,B ,C ,D 的四个结论,其中有且只有一个结论是正确的,必须把正确结论的代号写在题后的圆括号内,选对得4分,不选、选错或者选出的代号超过一个(不论是否都写在圆括号内),一律得零分.12.已知a b ∈R ,,且i ,i 2++b a (i 是虚数单位)是实系数一元二次方程02=++q px x 的两个根,那么p q ,的值分别是( ) A.45p q =-=, B.43p q =-=, C.45p q ==,D.43p q ==,13.设a b ,是非零实数,若b a <,则下列不等式成立的是( ) A.22b a < B.b a ab 22< C.ba ab 2211< D.b aa b < 14.直角坐标系xOy 中,i j r r,分别是与x y ,轴正方向同向的单位向量.在直角三角形ABC 中,若j k i j i ρρρρ+=+=3,2,则k 的可能值个数是( )A.1 B.2 C.3 D.415.设)(x f 是定义在正整数集上的函数,且)(x f 满足:“当2()f k k ≥成立时,总可推 出(1)f k +≥2)1(+k 成立”.那么,下列命题总成立的是( ) A.若(3)9f ≥成立,则当1k ≥时,均有2()f k k ≥成立 B.若(5)25f ≥成立,则当5k ≤时,均有2()f k k ≥成立CB1C 1B1AAC.若49)7(<f 成立,则当8k ≥时,均有2)(k k f <成立 D.若25)4(=f 成立,则当4k ≥时,均有2()f k k ≥成立三.解答题(本大题满分90分)本大题共有6题,解答下列各题必须写出必要的步骤.16.(本题满分12分)如图,在体积为1的直三棱柱111C B A ABC -中,1,90===∠BC AC ACB ο.求直线B A 1与平面C C BB 11所成角的大小(结果用反三角函数值表示). 17.(本题满分14分)在ABC △中,a b c ,,分别是三个内角A B C ,,的对边.若4π,2==C a ,5522cos=B ,求ABC △的面积S .18.(本题满分14分)本题共有2个小题,第1小题满分6分,第2小题满分8分.近年来,太阳能技术运用的步伐日益加快.2002年全球太阳电池的年生产量达到670兆瓦,年生产量的增长率为34%.以后四年中,年生产量的增长率逐年递增2%(如,2003年的年生产量的增长率为36%).(1)求2006年全球太阳电池的年生产量(结果精确到0.1兆瓦);(2)目前太阳电池产业存在的主要问题是市场安装量远小于生产量,2006年的实际安装量为1420兆瓦.假设以后若干年内太阳电池的年生产量的增长率保持在42%,到2010年,要使年安装量与年生产量基本持平(即年安装量不少于年生产量的95%),这四年中太阳电池的年安装量的平均增长率至少应达到多少(结果精确到0.1%)?19.(本题满分14分)本题共有2个小题,第1小题满分7分,第2小题满分7分. 已知函数0()(2≠+=x xax x f ,常数)a ∈R .(1)讨论函数)(x f 的奇偶性,并说明理由;(2)若函数)(x f 在[2)x ∈+∞,上为增函数,求a 的取值范围.20.(本题满分18分)本题共有3个小题,第1小题满分3分,第2小题满分6分,第3小题满分9分.如果有穷数列123n a a a a L ,,,,(n 为正整数)满足条件n a a =1,12-=n a a ,…,1a a n =,即1+-=i n i a a (12i n =L ,,,),我们称其为“对称数列”.例如,由组合数组成的数列01m m m m C C C L ,,,就是“对称数列”.(1)设{}n b 是项数为7的“对称数列”,其中1234b b b b ,,,是等差数列,且21=b ,114=b .依次写出{}n b 的每一项;(2)设{}n c 是项数为12-k (正整数1>k )的“对称数列”,其中121k k k c c c +-L ,,,是首项为50,公差为4-的等差数列.记{}n c 各项的和为12-k S .当k 为何值时,12-k S 取得最大值?并求出12-k S 的最大值;(3)对于确定的正整数1>m ,写出所有项数不超过m 2的“对称数列”,使得211222m -L ,,,,依次是该数列中连续的项;当m 1500>时,求其中一个“对称数列”前2008项的和2008S .21.(本题满分18分)本题共有3个小题,第1小题满分4分,第2小题满分6分,第3小题满分8分.我们把由半椭圆12222=+b y a x (0)x ≥与半椭圆12222=+cx b y (0)x ≤合成的曲线称作“果圆”,其中222c b a +=,0>a ,0>>c b .如图,点0F ,1F ,2F 是相应椭圆的焦点,1A ,2A 和1B ,2B 分别是“果圆”与x ,y轴的交点.(1)若012F F F △是边长为1的等边三角形,求“果圆”的方程;(2)当21A A >21B B 时,求ab的取值范围; (3的弦.试研究:是否存在实数k ,使斜率为k 平行弦的中点轨迹总是落在某个椭圆上?若存在,求出所有可能的k 值;若不存在,说明理由.2007年全国普通高等学校招生统一考试(上海卷)数学试卷(理工农医类)答案要点一、填空题(第1题至第11题) 1. {}34≠<x x x 且 2. 32-3.)(11≠-x x x4.7log 3 5.161 6. π 7. 3.0 8. )3(122+=x y 9.②④10. 21//s s ,并且1t 与2t 相交(//1t 2t ,并且1s 与2s 相交)11.二、选择题(第12题至第15题)题 号 1213 1415答 案ACB D三、解答题(第16题至第21题) 16.解法一: 由题意,可得体积11111122ABC V CC S CC AC BC CC ====g g g g △,∴ 211==CC AA .连接1BC . 1111111AC B C AC CC ⊥⊥Q ,,⊥∴11C A 平面C C BB 11,11BC A ∠∴是直线B A 1与平面C C BB 11所成的角. 52211=+=BC CC BC ,51tan 11111==∠∴BC C A BC A ,则 11BC A ∠=55arctan . CB1B1A A1C即直线B A 1与平面C C BB 11所成角的大小为55arctan. 解法二: 由题意,可得体积11111122ABC V CC S CC AC BC CC ∆====g g g g ,21=∴CC ,如图,建立空间直角坐标系. 得点(010)B ,,, 1(002)C ,,,1(102)A ,,. 则1(112)A B =--u u u r,,, 平面C C BB 11的法向量为(100)n =r,,. 设直线B A 1与平面C C BB 11所成的角为θ,A 1与n 的夹角为ϕ,则11cos A B n A B nϕ==u u u r rg u u u r r g 66arcsin ,66|cos |sin ===∴θϕθ, 即直线B A 1与平面C C BB 11所成角的大小为66arcsin. 17.解: 由题意,得3cos 5B B =,为锐角,54sin =B ,10274π3sin )πsin(sin =⎪⎭⎫ ⎝⎛-=--=B C B A , 由正弦定理得 710=c , ∴ 111048sin 222757S ac B ==⨯⨯⨯=g .18.解:(1)由已知得2003,2004,2005,2006年太阳电池的年生产量的增长率依次为 %36,%38,%40,%42.则2006年全球太阳电池的年生产量为8.249942.140.138.136.1670≈⨯⨯⨯⨯(兆瓦).(2)设太阳电池的年安装量的平均增长率为x ,则441420(1)95%2499.8(142%)x ++≥. 解得0.615x ≥.因此,这四年中太阳电池的年安装量的平均增长率至少应达到%5.61. 19.解:(1)当0=a 时,2)(x x f =,对任意(0)(0)x ∈-∞+∞U ,,,)()()(22x f x x x f ==-=-, )(x f ∴为偶函数.当0≠a 时,2()(00)af x x a x x=+≠≠,, 取1±=x ,得 (1)(1)20(1)(1)20f f f f a -+=≠--=-≠,, (1)(1)(1)(1)f f f f ∴-≠--≠,,∴ 函数)(x f 既不是奇函数,也不是偶函数. (2)解法一:设122x x <≤, 22212121)()(x a x x a x x f x f --+=-[]a x x x x x x x x -+-=)()(21212121, 要使函数)(x f 在[2)x ∈+∞,上为增函数,必须0)()(21<-x f x f 恒成立. 121204x x x x -<>Q ,,即)(2121x x x x a +<恒成立. 又421>+x x Θ,16)(2121>+∴x x x x .a ∴的取值范围是(16]-∞,.解法二:当0=a 时,2)(x x f =,显然在[2)+∞,为增函数.当0<a 时,反比例函数xa在[2)+∞,为增函数, xax x f +=∴2)(在[2)+∞,为增函数. 当0>a 时,同解法一.20.解:(1)设{}n b 的公差为d ,则1132314=+=+=d d b b ,解得 3=d , ∴数列{}n b 为25811852,,,,,,.(2)12112112-+--+++++++=k k k k k c c c c c c S ΛΛ k k k k c c c c -+++=-+)(2121Λ,50134)13(42212-⨯+--=-k S k ,∴当13=k 时,12-k S 取得最大值.12-k S 的最大值为626. (3)所有可能的“对称数列”是: ① 22122122222221m m m ---L L ,,,,,,,,,,;② 2211221222222221m m m m ----L L ,,,,,,,,,,,; ③ 122221222212222m m m m ----L L ,,,,,,,,,,; ④ 1222212222112222m m m m ----L L ,,,,,,,,,,,. 对于①,当2008m ≥时,1222212008200722008-=++++=ΛS . 当15002007m <≤时,200922122008222221----+++++++=m m m m S ΛΛ 2009212212---+-=m m m 1222200921--+=--m m m .对于②,当2008m ≥时,1220082008-=S . 当15002007m <≤时,2008S 122200821--=-+m m .对于③,当2008m ≥时,2008200822--=m m S .当15002007m <≤时,2008S 3222009-+=-mm .对于④,当2008m ≥时,2008200822--=m m S .当15002007m <≤时,2008S 2222008-+=-mm .21. 解:(1)Θ ()()012(0)00F c F F -,,,,,021211F F b F F ∴=====,,于是22223744c a b c ==+=,,所求“果圆”方程为2241(0)7x y x +=≥,2241(0)3y x x +=≤. (2)由题意,得 b c a 2>+,即a b b a ->-222.2222)2(a c b b =+>Θ,222)2(a b b a ->-∴,得54<a b . 又21,222222>∴-=>a b b a c b . 45b a ⎫∴∈⎪⎪⎝⎭,. (3)设“果圆”C 的方程为22221(0)x y x a b +=≥,22221(0)y x x b c+=≤.记平行弦的斜率为k .当0=k 时,直线()y t b t b =-≤≤与半椭圆22221(0)x y x a b+=≥的交点是P t ⎛⎫ ⎪ ⎪⎝⎭,与半椭圆22221(0)y x x b c +=≤的交点是Q t ⎛⎫- ⎪ ⎪⎝⎭. ∴ P Q ,的中点M ()x y ,满足2a c x y t ⎧-⎪=⎨⎪=⎩,得 122222=+⎪⎭⎫ ⎝⎛-b y c a x . Θ b a 2<,∴ 22220222a c a c b a c b b ----+⎛⎫-=≠ ⎪⎝⎭g . 综上所述,当0=k 时,“果圆”平行弦的中点轨迹总是落在某个椭圆上.当0>k 时,以k 为斜率过1B 的直线l 与半椭圆22221(0)x y x a b+=≥的交点是22232222222ka b k a b b k a b k a b ⎛⎫- ⎪++⎝⎭,. 由此,在直线l 右侧,以k 为斜率的平行弦的中点轨迹在直线x ka b y 22-=上,即不在某一椭圆上. 当0<k 时,可类似讨论得到平行弦中点轨迹不都在某一椭圆上.。