2019奉贤区二模
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2019届上海市奉贤区⾼三⼆模英语试题(解析版)2019届上海市奉贤区⾼三⼆模英语试题考⽣注意1. 考试时间120分钟,试卷满分140分2. 本考试设试卷和答题纸两部分,所有答题必须涂(选择题)或写(⾮选择题)在答题纸上,做在试卷上⼀律不得分3. 答题前,务必在答题纸上填写准考证号和姓名,并将核对后的条形码貼在指定位置上,在答题纸反⾯清楚地填写姓名。
Ⅰ. Listening ComprehensionSection ADirections: In Section 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. At an airport.B. In an office.C. At a police station.D. Ata travel agency. 【答案】A【解析】【分析】W: Thanks for meeting me. Mr. Hawker.M: Nice to see you. Do we need to stop at the baggage claim area?Q: Where does this conversation most probably take place?【详解】此题为听⼒题,解析略。
奉贤区中考英语质量抽查试卷(满分: 150分考试时间: 100分钟)Part 1 Listening (第一部分听力)1. Listening comprehension (听力理解) (共30分)A. Listen and choose the right picture(根据你听到的内容,选出相应的图片) (6分)1. _____2. ______3. ______4. ______5. ______6. _______B. Listen to the dialogue and choose the best answer to the question you hear (根据你听到的对话和问题,选出最恰当的答案) (8分)7. A) Sunny B) Rainy C) Cloudy. D)Windy.8. A) Short and thin. B) Short and strong C) Tall and Thin. D) Tall and strong9. A) Mr. Green. B) Mr. Green and his wife.C) Mr. Green's students. D) Mr. Green and his students.10. A) In the restaurant. D) In the Shopping Mall.11. A) By bike. B) By bus. C) by underground D) on foot12. A) 5 minutes' ride. B)15 minutes' ride.C) 25 minutes' ride. D) 35 minutes' ride..13 .A) The man doesn't like making tomato jam.B) The man forgot where he left tomato jam.C) The woman was very carefulD) The woman broke the bottle of tomato jam.14. A) He played games on iPhone yesterday. C) He was late for the film.B) He wasn't interested in the film. D) He didn't see the film yesterday.C. Listen to the passage and tell whether the following statements are true or false (判断下列句子是否符合你听到的短文内容,符合的用"T"表示,不符合的用"F"表示) (6分)15. I didn't love Alice because she often played tricks on me.16. My mother worried very much about me, so she took me to school every day.17. My mother buttoned up Alice's coat and turned the collar up around her neckwhen we met her just on the top of the hill.18. Alice was afraid of my mother and she had to agree that she would be my friend.19. I walked up the hill each day after school with Alice and pretty soon she becamemy best friend.20. I finally came to understand my mother's message: Love always winsD. Listen to the passage and complete the following sentences (听短文,完成下列内容。
年上海市奉贤区初三二模语文试卷(精校版含答案)(完卷时间分钟,满分分)一、文言文(分)(一)默写(分).几处早莺争暖树,。
(《钱塘湖春行》).,浓睡不消残酒。
(《如梦令》).人面不知何处去,。
(《题都城南庄》).,往来翕忽。
(《小石潭记》).殚其地之出,。
(《捕蛇者说》)(二)阅读下面的诗,完成第题(分)诉衷情当年万里觅封侯,匹马戍梁州。
关河梦断何处,尘暗旧貂裘。
胡未灭,鬓先秋,泪空流。
此生谁料,心在天山,身老沧洲。
.本词的作者是(人名),词中“沧洲”的意思是。
( 分).下列对这首词的内容理解,错误的一项是(分).这首词的词牌名是“诉表情”。
.“当年万里觅封候”写出了词人当年远离家乡、壮志报国的情景。
.关河梦断何处”流露出词人对将要离开军队而产生的遗憾之情。
.“泪空流”表达了词人壮志难酬的悲愤和不甘.(三)阅读下文,完成第题(分)陋室铭山不在高,有仙则名。
水不在深,有龙则灵。
斯是陋室,惟吾德馨。
苔痕上阶绿,草色入帘青。
谈笑有鸿儒,往来无白丁。
可以调素琴,阅金经。
无丝竹之乱耳,无案牍之劳形。
南阳诸葛庐,西蜀子云亭,孔子云:何陋之有?. 请按要求完成下面的基础积累表。
(分)文学常识词语解释句子翻译本文作者是唐代文学家、哲学家()(人名)。
可以调素琴素:()谈笑有鸿儒,往来无白丁。
译句:().下列对“陋室不陋”的原因理解错误的项是。
(分).因为陋室处在一个有仙有龙的地方。
.因为陋室里住的是品德高尚的人。
.因为陋室环境幽美清雅,陋室生活恬然自适。
.因为陋室主人安贫乐道、情趣高雅。
(四)阅读下文,完成第题(分)濮州刺史庞相寿坐贪污解任,自陈①尝在秦王②幕府。
上怜之,欲听还旧任。
魏征谏曰:“秦王左右,中外③甚多,恐人人皆恃恩私,足使为善者惧。
”上欣然纳之。
谓相寿曰:“我昔为秦王,乃一府之主;今居大位,乃四海④之主,不得独私故人。
大臣所执如是,朕何敢违!”赐帛遣之,相寿流涕而去。
【注释】①陈:陈述。
②秦王:唐太宗李世民。
2019年上海市奉贤区中考化学二模试卷六、选择题(共20分)1.(1分)“绿水青山就是金山银山”。
下列物质的大量排放不违背该理念的是()A.氮气B.二氧化硫C.固体粉尘D.工业废水2.(1分)下列工艺制作过程包含化学变化的是()A.裁剪窗花B.烧制陶瓷C.雕刻玉石D.编织竹篮3.(1分)属于溶液的是()A.蒸馏水B.矿泉水C.酸牛奶D.草莓酱4.(1分)不属于有机物的是()A.葡萄糖B.甲烷C.酒精D.碳酸5.(1分)属于氮肥的是()A.CO(NH2)2B.Ca(H2PO4)2C.K2CO3D.K2SO4 6.(1分)自来水生产中起吸附作用的是()A.氯气B.活性炭C.明矾D.氯化铁7.(1分)氧气能被压缩在钢瓶中贮存,说明()A.氧分子的大小发生改变B.氧分子可以再分C.氧分子总是在不断运动D.氧分子之间有间隔8.(1分)以下可回收垃圾中属于金属的是()A.塑料B.玻璃C.废报纸D.废旧铁锅9.(1分)下列物质能在氧气中燃烧,且生成白色固体物质的是()A.硫粉B.木炭C.镁D.铁丝10.(1分)关于电解水实验说法正确的是()A.从现象上判断:负极产生的是氧气B.从变化上分类:该变化属于物理变化C.从宏观上分析:水是由氢气和氧气组成的D.从微观上分析:水分子是由氢原子和氧原子构成的11.(1分)关于二氧化碳说法错误的是()A.固体俗称“干冰”B.常用作灭火剂C.属于碱性氧化物D.是引起温室效应的主要物质12.(1分)在氧气中完全燃烧只生成水的物质是()A.氢气B.木炭C.天然气D.一氧化碳13.(1分)关于粗盐提纯实验部分操作正确的是()A.取粗盐B.溶解C.过滤D.蒸发结晶14.(1分)木炭还原氧化铜的化学方程式书写正确的是()A.C+2CuO2Cu+CO2↑B.C+2CuO2Cu+CO2C.C+2CuO2Cu+CO2↑D.C+CuO Cu+CO2↑15.(1分)有关物质用途错误的是()A.胆矾检验水B.食盐水消毒伤口C.盐酸除铁锈D.一氧化碳冶炼金属16.(1分)下列排序正确的是()A.地壳中元素的含量:B.空气中物质的含量C.溶液的pH:D.碳元素的质量分数:17.(1分)如图装置反应制取氢气,关闭活塞后固液无法分离,原因分析错误的是()A.装置漏气B.稀硫酸消耗完了C.固体颗粒变小掉下去了D.液体从长颈漏斗口溢出18.(1分)不能用BaCl2溶液鉴别的一组物质是()A.HCl、H2SO4B.Na2CO3、Na2SO4C.NaCl、Na2SO4D.Na2CO3、NaNO319.(1分)关于置换反应说法一定正确的是()A.置换反应一定在溶液中进行B.置换反应发生时一定有元素化合价的改变C.有单质和化合物生成的反应一定是置换反应D.元素存在形态发生改变的反应一定是置换反应20.(1分)密闭容器中有甲、乙、丙、丁四种物质,在一定条件下反应,测得反应过程中几个时刻各物质的质量分数如图所示。
2019奉贤区二模语文试卷2019.4(完卷时间100分钟,满分150分)一、文言文(40分)(一)默写(15分)1.几处早莺争暖树,_______________________。
(《钱塘湖春行》)2._______________________,浓睡不消残酒。
(《如梦令》)3.人面不知何处去,_______________________。
(《题都城南庄》)4._______________________,往来翕忽。
(《小石潭记》)5.殚其地之出,_______________________。
(《捕蛇者说》)(二)阅读下面的诗,完成第6-7题(4分)诉衷情当年万里觅封侯,匹马戍梁州。
关河梦断何处,尘暗旧貂裘。
胡未灭,鬓先秋,泪空流。
此生谁料,心在天山,身老沧洲。
6.本词的作者是___________(人名),词中“沧洲”的意思是_________________________。
(2 分)7.下列对这首词的内容理解,错误的一项是()。
(2分)A.这首词的词牌名是“诉衷情”。
B.“当年万里觅封候”写出了词人当年远离家乡、壮志报国的情景。
C.关河梦断何处”流露出词人对将要离开军队而产生的遗憾之情。
D.“泪空流”表达了词人壮志难酬的悲愤和不甘。
(三)阅读下文,完成第8-9题(9分)陋室铭山不在高,有仙则名。
水不在深,有龙则灵。
斯是陋室,惟吾德馨。
苔痕上阶绿,草色入帘青。
谈笑有鸿儒,往来无白丁。
可以调素琴,阅金经。
无丝竹之乱耳,无案牍之劳形。
南阳诸葛庐,西蜀子云亭,孔子云:何陋之有?8.请按要求完成下面的基础积累表。
(6分)9.下列对“陋室不陋”的原因理解错误的一项是()。
(3分)A.因为陋室处在一个有仙有龙的地方。
B.因为陋室里住的是品德高尚的人。
C.因为陋室环境幽美清雅,陋室生活恬然自适。
D.因为陋室主人安贫乐道、情趣高雅。
(四)阅读下文,完成第10-13题(12分)濮州刺史庞相寿坐.贪污解任,自陈①尝在秦王②幕府。
2019年上海市奉贤区中考二模物理试卷一、单选题1.下列有关电和磁的说法中正确的是()A.磁体周围存在磁感线B.同名磁极相互排斥,异名磁极相互吸引C.发电机工作时把电能转化为机械能D.电动机是利用电磁感应现象制成的2.一个未装满饮料的密闭杯子,先正立放在桌面上(如图甲),然后反过来倒立放在桌面上(如图乙),两次放置饮料对杯底的压力和压强分别是F甲、F乙、和p甲、p乙,则下列关系式正确的是()A.p甲>p乙,F甲>F乙B.p甲<p乙,F甲<F乙C.p甲=p乙,F甲=F乙D.p甲>p乙,F甲<F乙3.小明用矿泉水瓶和小玻璃瓶制作了一个“浮沉子”(如图),他将装有适量水的小玻璃瓶瓶口朝下,使其漂浮在矿泉水瓶内的水面上,矿泉水瓶内留有少量空气,拧紧瓶盖使其密封,用力挤压矿泉水瓶侧面时“浮沉子”下沉,松手后“浮沉子”即上浮.下列说法错误的是A.“浮沉子”下沉时,所受重力大于它受到的浮力B.无论怎样挤压矿泉水瓶侧面,“浮沉子”不可能悬浮在水中C.“浮沉子”上浮时,小瓶内的压缩空气会将内部的水压出D.潜水艇与“浮沉子”浮沉的原理相同4.音乐会上小提琴演奏乐曲时,下列说法正确的是()A.演奏前,调节小提琴的琴弦松紧可改变声音的响度B.演奏时,用力拉紧小提琴的同一琴弦可提高声音的音调C.小提琴演奏的乐曲通过空气传入听众的耳朵D.小提琴的音色和二胡的音色相同5.相同材料制成的甲、乙、丙三个导体,相关数据如下表,根据表中提供的数据,下列判断正确的是:导体长度/cm 横截面积/mm2甲10 10乙20 1丙30 0.1A.甲导体电阻最大B.乙导体电阻最大C.丙导体电阻最大D.三个导体电阻一样大6.在“探究电流与电阻的关系”实验中,小榕设计了如图所示的电路图.实验中电源两端电压保持6V 不变,定值电阻R的阻值分别为5Ω、10Ω和20Ω,电压表示数保持2V不变.为完成实验,应选取的滑动变阻器的规格为A.10Ω 2A B.20Ω 1A C.30Ω 2A D.50Ω 1A7.图所示现象中,由光的反射形成的是A.露珠下的叶脉B.玩具在镜中的像C.日食D.白光的色散8.如图所示的工具中,正常使用时属于费力杠杆的是()A.托盘天平B.筷子C.核桃夹子D.羊角锤二、填空题9.一个重300N的物体Q,底而积为400cm2,将其放在水平地面上,它对地而的压强是_______Pa.如图所示,现将物体Q挂在杠杆的B端,在A端悬挂一个重100N的物体P,使杠杆在水平位置平衡,忽略杠杆自重的影响,若OA :OB=2:5,那么地面对物体Q的支持力为_______N.10.一台起重机在10 s内将重为3 600 N的货物匀速提高了4 m,起重机做的有用功是______J。
上海市奉贤区2019届高三英语二模试题(含解析)考生注意1. 考试时间120分钟,试卷满分140分2. 本考试设试卷和答题纸两部分,所有答题必须涂(选择题)或写(非选择题)在答题纸上,做在试卷上一律不得分3. 答题前,务必在答题纸上填写准考证号和姓名,并将核对后的条形码貼在指定位置上,在答题纸反面清楚地填写姓名。
Ⅰ. Listening ComprehensionSection ADirections: In Section 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. At an airport.B. In an office.C. At a police station.D. Ata travel agency.【答案】A【解析】【分析】W: Thanks for meeting me. Mr. Hawker.M: Nice to see you. Do we need to stop at the baggage claim area?Q: Where does this conversation most probably take place?【详解】此题为听力题,解析略。
上海市奉贤区2019届高三物理二模试题(Word 版含答案))一、单项选择题(共16分,每小题2分。
每小题只有一个正确选项。
) 1.人类认识原子核的复杂结构并进行研究是从( ) 开始的A .发现电子B .发现质子C .α粒子散射实验D .发现天然放射现象 2.下列属于电磁波的是( )A .阴极射线B .射线C .β射线D .γ射线3.在白炽灯的照射下,能从捏紧的两块玻璃板的表面看到彩色条纹。
这种现象属于( ) A .光的单缝衍射 B .光的薄膜干涉 C .光的双缝干涉 D .光的粒子性表现 4.23994Pu 可由铀239(23992U )经过n 次β衰变而产生,则n 为( )A .2B .239C .145D .925.在光电效应实验中,如果需要增大光电子到达阳极时的速度,可采用的方法是( ) A .增加光照时间 B .增大入射光的波长 C .增大入射光的强度 D .增大入射光频率6.走廊里的一盏电灯由走廊两端的两开关控制,不管哪个开关接通都能使电灯点亮,则设计的电路为( ) A .“与”门电路 B .“非”门电路 C .“或”门电路 D .“与非”门电路 7.下列分子势能一定减小的情况是( ) A.分子间距离减小时B.分子间表现为斥力且分子间距离增大时C .分子动能增大时 D.分子间作用力做负功时8.如图所示,小车沿水平地面向右匀加速直线运动,固定在小车上的直杆与水平地面的夹角为θ,杆顶端固定有质量为m 的小球。
当小车的加速度逐渐增大时,杆对小球的作用力变化的受力图(OO′为沿杆方向)是( )二.单项选择题(共24分,每小题3分。
每小题只有一个正确选项。
)9.英国物理学家卢瑟福用α粒子轰击金箱,发现了α粒子的散射现象。
如图所示中,O 表示金原子核的位置,则能合理表示该实验中经过金原子核附近的α粒子的运动轨迹的图是( )10.如图是利用DIS 测得的运动小车的速度—时间图像,由图可知( ) A .小车做曲线运动 B .小车的最大位移是0.8m C .小车运动的最大速度约为0.8m/s D .小车先做匀加速运动,后做匀减速运动11.在竖直平面内有根光滑金属杆弯成如图所示形状,相应的曲线方程为x A y cos =,将一个光滑小环套在该金属杆上,并从0=x 、A y =处以某一初速度沿杆向右运动,则运动过程中( ) A .小环在D 点的加速度为零 B .小环在B 点和D 点的加速度相同 C .小环在C 点的动能最大 D .小环在E 点的动能为零12.在同一水平直线上的两位置分别沿同水平方向抛出两小球A 和B ,A 、B 两球都经过了空中的P 点,运动轨迹如图所示,不计空气阻力,则正确的是( ) A .在P 点,A 球的速度大于B 球的速度 B .在P 点,A 球的加速度大于B 球的加速度 C .抛出时,A 球速度小于B 球速度 D .抛出时,先抛出A 球后抛出B 球13.质量为m 的物体在空中以0.9g (g 为重力加速度)的加速度下落,在物体下落h 高度的过程中,正确的是 ( )A .重力势能减小了0.9mghB .动能增大了0.9mghC .动能增大了0.1mghD .机械能损失了0.9mgh14.如图是电磁冲击钻的原理示意图,若发现钻头M 突然向右运动,则可能是( )A .开关S 由断开到闭合的瞬间B .开关S 由闭合到断开的瞬间C .保持开关S 闭合,变阻器滑片P 加速向右滑动D .保持开关S 闭合,变阻器滑片P 减速向右滑动15.如图所示,细线的一端固定于O 点,另一端系一小球,在水平拉力作用下,小球以恒定速率在竖直平面内由A 点运动到B 点,在此过程中拉力的瞬时功率变化情况是( ) A .逐渐增大 B .逐渐减小 C .先增大,后减小 D .先减小,后增大16.如图虚线为某电场的等势面,有两个带电粒子(重力不计),以不同的速率沿不同的方向,从A 点飞入电场后,沿不同的径迹1和2运动,由轨迹可以判定( ) A .两粒子带电多少一定不同 B .两粒子的电性可能相同C .两粒子的电势能都是先减少后增大D .经过B 、C 两点,两粒子的速率可能相等三.多项选择题(共16分,每小题4分。
2 ⎩⎨ ⎩12上海市奉贤区 2019 届高三二模数学试卷2019.4一. 填空题(本大题共 12 题,1-6 每题 4 分,7-12 每题 5 分,共 54 分)1. 计算行列式cos 3 sin sin 23 =cos22. 在(x + 2)6 的展开式中常数项为x3. 设函数 y = f (x ) = log x + c 的图像经过点(2,5),则y = f (x ) 的反函数 f -1(x ) =⎧x = 2 + cos 4. 参数方程⎨ y = sin (为参数,∈[0, 2) )表示的普通方程为⎛ 1 1 6 ⎫ ⎛ c ⎫5. 若关于 x 、 y 的二元一次线性方程组的增广矩阵是 0 a 2 ⎪ ,该方程组的解为 2 ⎪ ,⎝ ⎭ ⎝ ⎭则 a + c =⎧x - y ≥ 0 6. 若 x 、 y 满足约束条件⎪2x + y ≤ 6 ,则 x + 3y 的最小值为⎪x + y ≥ 2 7. 设等比数列{a n } 中,首项 a 1 < 0 ,若{a n } 是递增数列,则公比 q 的取值范围是8. 双曲线的右焦点恰好是 y 2 = 4x 的焦点,它的两条渐近线的夹角为,则双曲线的标准2方程为9. 已知函数 y = f (x ) 是定义在 R 上的奇函数,且在[0, +∞) 单调递减,当 x + y = 2019 时, 恒有 f (x ) + f (2019) > f ( y ) 成立,则 x 的取值范围是10. 随机选取集合{地铁 5 号线, BRT ,莘南线}的非空子集 A 和 B 且 A B ≠ ∅ 的概率是11. 实系数一元二次方程 ax 2 + bx +1 = 0 (ab ≠ 0) 的两个虚根 z 、 z , z 的实部1Re(z 1) < 0 ,20m + 21m - 2020z 则 1 的模等于 1,则实数 m =29m- 2020z212. 设点 P 在以 A 为圆心,半径为 1 的圆弧B C 上运动(包含 B 、C 两个端点), ∠BAC = 2,且 =+,3x + y + xy 的取值范围为AP x AB y ACy 1 y x + = + = x 二. 选择题(本大题共 4 题,每题 5 分,共 20 分)13. 在等差数列{a } 中,设 k ,l , p , r ∈ N * ,则 k + l > p + r 是 a+ a > a+ a 的()nA. 充分非必要条件B. 必要非充分条件C. 充要条件D. 既非充分非必要条件klpr14. 如图的后母戊鼎(原称司母戊鼎)是迄今为止世界上出土最大、最重的青铜礼器,有“镇国之宝”的美誉,后母戊鼎双耳立,折沿宽缘,直壁,深腹,平底,下承中空“柱足”,造型厚重端庄,气势恢宏,是中国青铜时代辉煌文明的见证,右图为鼎足近似模型的三视图 (单位: cm ),经该鼎青铜密度为 a (单位: kg / cm 3 ),则根据三视图信息可得一个柱足的重量约为(重量 = 体积×密度,单位: kg )()A. 1250 aB. 5000 aC.3750 aD. 15000 a15. 已知△ ABC 的周长为 12, B (0, -2) , C (0, 2) ,则顶点 A 的轨迹方程为()2 2A. + = 1 (x ≠ 0) x 2 y 2B. ( y ≠ 0) 12 1612 16x 2 y 2C.(x ≠ 0)2 2 D. + = 1 ( y ≠ 0) 16 1216 1216. 设有△ A 0 B 0C 0 ,作它的内切圆,得到的三个切点确定一个新的三角形△ A 1B 1C 1 ,再作△ A 1B 1C 1 的内切圆,得到的三个切点又确定一个新的三角形△ A 2 B 2C 2 ,以此类推,一次一次不停地作下去可以得到一个三角形序列△ A n B n C n ( n = 1, 2,3,⋅⋅⋅ ),它们的尺寸越来越小,则最终这些三角形的极限情形是( ) A. 等边三角形B. 直角三角形C. 与原三角形相似D. 以上均不对三. 解答题(本大题共 5 题,共 14+14+14+16+18=76 分)17. 已知sin 、sin 、cos 成等差数列, sin 、sin 、cos 成等比数列. (1)若= ,求;(2)求cos 2- 6 1cos 2的值.215 18. 如图,在四棱锥 P - ABCD 中, PA ⊥ PD , PA = PD , AD 的中点是 E , PE ⊥ 面ABCD , AB ⊥ AD , AB = 1, AD = 2 , AC = CD = .(1) 求异面直线 PC 与 AB 所成角的大小; (2) 求面 PDC 与平面 PAB 所成二面角的大小.⎨19. 国家质量监督检验检疫局于 2004 年 5 月 31 日发布了新的《车辆驾驶人员血液、呼气酒精含量阀值与检验》国家标准,新标准规定,车辆驾驶人员血液中的酒精含量大于或等于 20 毫克/百毫升,小于 80 毫克/百毫升为饮酒驾车,血液中的酒精含量大于或等于 80 毫克/百毫升为醉酒驾车,经过反复试验,喝一瓶啤酒后酒精在人体血液中的变化规律的“散点图”如⎧a (x - 3)2 + 47.42 0 ≤ x < 2下图,该函数近似模型如下: f (x ) = ⎪2,又已知刚好过 1 小时⎪⎩54.27e -0.3x +10.18x ≥ 2时测得酒精含量值为 44.42 毫克/百毫升,根据上述条件,解答以下问题:(1) 试计算喝 1 瓶啤酒多少小时血液中的酒精含量达到最大值?最大值是多少? (2) 试计算喝 1 瓶啤酒后多少小时后才可以驾车?(时间以整分钟计算)- - =1 220. 已知两点 F 1 (-2,0) , F 2 (2,0) ,动点 P 在 y 轴上的射影是 H ,且 PF 1 ⋅ PF 2 = 2PH ,(1) 求动点 P 的轨迹方程;(2) 设直线 PF 1 、 PF 2 的两个斜率存在,分别记为 k 1 、 k 2 ,若 k 1k 2 = 1,求点 P 的坐标;4 (3) 若经过点 N ( 1,0) 的直线l 与动点 P 的轨迹有两个交点为T 、Q ,当| NT | | NQ | 7时,求直线l 的方程n= | 3n -13 |( n ∈ N ),求∑bn21. 统计学中将 n ( n ≥ 2 , n ∈ N * )个数 x 、 x 、⋅⋅⋅、 x 的和记作∑ x ,(1) 设b n 1 2 n10*1i =1i i =1(2) 是否存在互不相等的非负整数 a 1 , a 2 , a 3 ,⋅⋅⋅, a n , 0 ≤ a 1 < a 2 < a 3 ⋅⋅⋅ < a n ,使得∑2a1= 2019 成立,若存在,请写出推理过程;若不存在请证明;i =1(3) 设 x , x , x ,⋅⋅⋅, x ( n ≥ 3 )是不同的正实数, x= a ,对任意的 n ∈ N * ( n ≥ 3 ),都有1 2 3 n 1x n =1 x 2x 2 - x 2 1 ∑ n = n 1 ,判断 x , x , x ,⋅⋅⋅, x 是否为一个等比数列,请说明理由 x x x x 2 - x 21 2 3 n 2 i =1 i i +121y 参考答案一. 填空题 1. 02. 1603.2x -4 , x ∈ R4. (x - 2)2 + y 2 = 15. 56. -27. (0,1)x 28.1 - y 2= 19. (-∞,0)10.37 4911. 212. 22[1,3]二. 选择题 13. D14. C 15. A 16. A三. 解答题17.(1)空集;(2)0.18.(1) arccos;(2) .5 219.(1)喝 1 瓶啤酒 1.5 小时血液中的酒精含量达到最大值,最大值是 47.42; (2)喝 1 瓶啤酒后 342 分钟后才可以驾车.20.(1) x2 + = 1 ;8 4 (2) P ( 4 3 , 2 3 ) 或 P ( 4 3 , - 2 3 ) 或 P (- 4 3 , - 2 3 ) 或 P (- 4 3 , 2 3) ;3 3 3 3 3 3 3 3(3) y = ± 3(x +1) .21.(1)79;(2)存在,推理过程略;(3) x 1 , x 2 , x 3 ,⋅⋅⋅, x n 是等比数列,用数学归纳法证明.2 5 1 2。
上海市奉贤区2019年初三二模语文试卷各位读友大家好,此文档由网络收集而来,欢迎您下载,谢谢上海市奉贤区xxxx年初三二模语文试卷一、文言文默写1、人面不知何处去,2、,一览众山小。
3、了却君王天下事,4、,虽鸡狗不得宁焉。
5、自云先世避秦时乱,阅读下面的词,完成第6-7题。
送友人李白青山横北郭,白水绕东城。
此地一为别,孤蓬万里征。
浮云游子意,落日故人情。
挥手自兹去,萧萧班马鸣。
6、“孤蓬”在诗中喻指7、下列对这首词理解不正确的一项是A、首联点明了与友人告别的地点。
B、颔联表达了诗人对友人漂泊天涯的深切关怀和不舍之情。
c、颈联中用“浮云”来比喻自己,抒发了诗人的孤独之情。
D、整首诗写景自然明快,流淌着友人间温馨的情谊。
阅读下文,完成第8—10题吴广素爱人,士卒多为用者。
将尉醉,广故数言欲亡,忿恚尉,令辱之,以激怒其众。
尉果笞广。
尉剑挺,广起,夺而杀尉。
陈胜佐之,并杀两尉。
召令徒属曰:「公等遇雨,皆已失期,失期当斩。
藉弟令毋斩,而戍死者固十六七。
且壮士不死即已,死即举大名耳,王侯将相宁有种乎!」徒属皆曰:「敬受命。
」乃诈称公子扶苏、项燕,从民欲也。
袒右,称大楚。
为坛而盟,祭以尉首。
陈胜自立为将军,吴广为都尉。
攻大泽乡,收而攻蕲。
蕲下,乃令符离人葛婴将兵徇蕲以东。
攻铚、酂、苦、柘、谯皆下之。
行收兵。
比至陈,车六七百乘,骑千余,卒数万人。
攻陈,陈守令皆不在,独守丞与战谯门中。
弗胜,守丞死,乃入据陈。
数日,号令召三老、豪杰与皆来会计事。
三老、豪杰皆曰:「将军身被坚执锐,伐无道,诛暴秦,复立楚国之社稷,功宜为王。
」陈涉乃立为王,号为张楚。
当此时,诸郡县苦秦吏者,皆刑其长吏,杀之以应陈涉。
8、本文节选自课文《》,作者是西汉的史学家、文学家、思想家。
9、用现代汉语翻译下面的句子。
且壮士不死即已,死即举大名耳,王侯将相宁有种乎!10、下列对本段内容理解正确的一项是A、上文交代了陈胜起义的根本原因。
B、上文表现了陈胜卓越的领导才能。
状元考前提醒拿到试卷:熟悉试卷刚拿到试卷一般心情比较紧张,建议拿到卷子以后看看考卷一共几页,有多少道题,了解试卷结构,通览全卷是克服“前面难题做不出,后面易题没时间做”的有效措施,也从根本上防止了“漏做题”。
答题策略答题策略一共有三点:1. 先易后难、先熟后生。
先做简单的、熟悉的题,再做综合题、难题。
2. 先小后大。
先做容易拿分的小题,再做耗时又复杂的大题。
3. 先局部后整体。
把疑难问题划分成一系列的步骤,一步一步的解决,每解决一步就能得到一步的分数。
立足中下题目,力争高水平考试时,因为时间和个别题目的难度,多数学生很难做完、做对全部题目,所以在答卷中要立足中下题目。
中下题目通常占全卷的80%以上,是试题的主要构成,学生能拿下这些题目,实际上就是有了胜利在握的心理,对攻克高档题会更放得开。
确保运算正确,立足一次性成功在答卷时,要在以快为上的前提下,稳扎稳打,步步准确,尽量一次性成功。
不能为追求速度而丢掉准确度,甚至丢掉重要的得分步骤。
试题做完后要认真做好解后检查,看是否有空题,答卷是否准确,格式是否规范。
要学会“挤”分考试试题大多分步给分,所以理科要把主要方程式和计算结果写在显要位置,文科尽量把要点写清晰,作文尤其要注意开头和结尾。
考试时,每一道题都认真思考,能做几步就做几步,对于考生来说就是能做几分是几分,这是考试中最好的策略。
检查后的涂改方式要讲究发现错误后要划掉重新写,忌原地用涂黑的方式改,这会使阅卷老师看不清。
如果对现有的题解不满意想重新写,要先写出正确的,再划去错误的。
有的同学先把原来写的题解涂抹了,写新题解的时间又不够,本来可能得的分数被自己涂掉了。
考试期间遇到这些事,莫慌乱!2018学年奉贤区调研测试高三英语试卷(2019.04)Ⅱ. Grammar and VocabularySection ADirections:After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.How to Make the Most of Y our Lunch HourShould you grab a bite at your desk or eat with your colleagues? That depends on what’s on your agenda for the rest of the day.Lunch hours ___21___(get)shorter and shorter and even disappearing in some parts of today’s working world. With fewer employees ___22___(ask)to accomplish more in a day, many Americans treat lunch not as a break but as just another task to squeeze into an already over-booked day.But do quick meals at the desk actually improve productivity over more leisurely meals?The researchers only studied 32 employees, so the findings are datable. But when they assigned one group to eat at their desks and another to dine with a colleague at a restaurant, they found those who ate lunch together showed a decline ___23___ their performance on tests that measured concentration, memory and the ability to catch errors and read emotions in facial expressions following lunch than before lunch. Both groups ate the same meals, but those who ate alone were only given 20 minutes to consume their food, ___24___ the paired participants were allowed one hour in the restaurant. Those who ate alone did not have as large a drop in their cognitive processing as those who ate in the restaurant.What was responsible for the change? There were too many variables at play to determine which had the strongest influence on cognitive control—was it the companionship, or was it the restaurant environment ___25___ other diners were present, music was played and the meal was served by wait staff, or was it the longer time to enjoy the meal?___26___ factor was responsible, the group that took a restaurant lunch break came back more relaxed, say the authors, and that likely affected their cognitive sharpness. Sharing a meal outside the office with a friend appears to have a ___27___(calm)effect, and while it reduces intellectual skills, it may develop social harmony and teamwork, which ___28___ be an important feature of some work tasks.But don’t feel sorry for the lone lunchers. It turns out ___29___ since they were able to maintain their cognitive skills following the meal, they might be in a better position ___30___(think)creatively for projects that require more innovative solutions or approaches.Section BDirections:Fill in each blank with a proper word chosen from the box. Each word can only be used once. NoteThe contributions genes make to intelligence increase as children grow older. This goes against the idea most people hold that as we age, environmental influences gradually overpower the genetic legacy(遗产)we are born with and may have ___31___ for education.“People assume the genetic influence goes down with age because the environmental differences betweenPrevious studies have shown variations in intelligence are ___33___ due to genetics. To find out whether this genetic contribution varies with age, Plomin’s team gathered data from six separate studies carried out in 4 countries, ___34___ a total of 11000 pairs of twins. The researchers tested twins on reasoning, arithmetic etc, to measure a quantity called “G”. Each study also included both identical twins, with the same genes, and Lateral twins(异卵双生), sharing about half their genes, making it possible to ___35___ the contributions of genes and environment to their G scores.Plomin’s team calculated that in childhood, genes account for about 41 percent of the variation in intelligence. In adolescence, this rose to 55 percent; by young adolescence, it was 66 percent.No one ___36___ knows why the influence from genes should increase with age, but Plomin suggests that as children get older, they become better at handing their environment to suit their genetic needs, and says “Kids with high G will use their environment to develop their cognitive ability and choose friends who are like-minded. ” Children with ___37___ to low G may choose less challenging pastimes and activities, further emphasizing their genetic legacy.Is there any way to interfere with the pattern? Perhaps. “The evidence of strong heritability(遗传可能性)doesn’t mean at all that there is nothing you can do about it,”says Susanne Jaeggi, “from our own work, the ones that started off with lower IQ scores had higher ___38___ after training.”Plomin suggests that genetic differences may be more emphasized if all children share an identical curriculum instead of it being ___39___ to children’s natural abilities. “My tendency would be to give everyone a good education, but put more effort into the lower end,” he says.Intelligence researchers Paul Thompson agrees: “It shows that educators need to ___40___ kids towards things drawing out their natural talents.”Ⅱ. Reading Comprehension.Section ADirections:For each blank in the following passages there are four words or phrases marked A, B, C, and D. Fill in each blank with the word or phrase that best fits the context.Open data-sharers are still in the minority in many fields. Although many researchers broadly agree that public access to raw data would promote science, most are ___41___ to post the results of their own labours online.Some communities have agreed to share online-geneticists, for example, post DNA sequences at the GenBank repository(库), and astronomers are accustomed to ___42___ images of galaxies and stars from, say, the Sloan Digital Sky Survey, a telescope that has observed some 500 million objects -- but these remain the ___43___, not the rule Historically, scientists have ___44___ sharing for many reasons: it is a lot of work; until recently, good databases did not exist; grant funders were not pushing for sharing; it has been difficult to agree on standards for formatting data; and there is no agreed way to assign credit for data.But the ___45___ are disappearing in part because journals and funding agencies worldwide are encouraging scientists to make their data ___46___. Last year, the Royal Society in London said in its report that scientists need to“___47___ a research culture where data is viewed as private preserve”. Funding agencies note that data paid for with public money should be public information, and the scientific community is recognizing that data can now be shared online in ways that were not possible before. To match the growing demand, services are springing up to make it easier to publish research products ___48___ and enable other researchers to discover and cite(引用)them.Although calls to share data often concentrate on the ___49___ advantages of sharing, the practice is not purely beneficial to others. Researchers who share get plenty of personal benefits, including more connections with colleagues, improved ___50___ and increased citations. The most successful sharers -- those whose data are downloaded and cited the most often -- get noticed, and their work gets used. ___51___, one of the most populartimes. Co-author Amy Zanne thinks that users probably range from climate-change researchers wanting to estimate how much carbon is stored in biomass, to foresters looking for information on different grades of trees.“I’d much prefer to have my data used by the ___53___ number of people to ask their own questions,”she says.“It’s important to allow readers and reviewers to see exactly how you arrive at your results. Publishing data and code allows your science to be ___54___.”Even people whose data are less popular can benefit. By making the effort to organize and label files so others can understand them, scientists can become more organized and better disciplined themselves, thus avoiding ___55___ later on.41. A. restricted B. reluctant C. desperate D. generous42. A. accessing B. processing C. analyzing D. identifying43. A. assumption B. mystery C. exception D. phenomenon44. A. longed for B. appealed to C. focused on D. objected to45. A. symptoms B. barriers C. advantages D. consequences46. A. controllable B. unique C. reliable D. public47. A. shift away from B. end up with C. give rise to D. build up48. A. secretly B. digitally C. ethically D. fairly49. A. material B. individual C. moral D. economic50. A. visibility B. awareness C. condition D. confidence51. A. On the contrary B. As a result C. For example D. After all52. A. downloaded B. updated C. optimized D. addressed53. A. moderate B. maximum C. average D. estimated54. A. reversible B. profitable C. reproducible D. recognizable55. A. crisis B. confusion C. risk D. conflictSection BDirections:Read the following three passages. Each passage is followed by several questions or unfinished statements. For each of them there are four choices marked A, B, C, and D. Choose the one that fits best according to the information given in the passage you have just read.AIt was 1961 and I was in the fifth grade. My marks in school were miserable and, the thing was, I didn’t know enough to really care. My older bother and I lived with Mom in a humble house in Detroit. We watched TV every night.But one day Mom changed our world forever. She turned off the TV. Our mother had only been able to get through third grade. But, she was much brighter and smarter than we boys know at the time. She had noticed something in the suburban houses she cleaned--books. So she came home one day, snapped off the TV, sat us down and explained that her sons were going to make something of themselves. “You boys are going to read two books every week,” she said. “And you’re going to write a report on what you read.”We complained about how unfair it was. Besides, we didn’t have any books in the house other than Mom’s Bible. But she explained that we would go where the books were: “I’ll drive you to the library.”So pretty soon there were these two peevish boys sitting in her car on their way to Detroit Public Library, depressed and restless. I wandered reluctantly among the children’s books. I loved animals, so when I saw some books that seemed to be about animals, I started leafing through them.The first book I read clear through was Chip the Dam Builder. It was about beavers. For the first time in my lifevirtue visit to a cold stream in a forest and these animals building a home.It didn’t dawn on me at the time, but the experience was quite different from watching TV. There were images forming in my mind instead of before my eyes. And I could return to them again and again with the flip of a page. Soon I began to look forward to visiting this quiet refuge from my other world.Now my older brother is an engineer and I am a doctor. Sometimes I still can’t believe my life’s journey, from a failing and indifferent student in a Detroit public school to this position, which takes me all over the world to teach and perform critical surgery.But I know when the journey began the day Mom switched off the TV set and put us in her Oldsmobile for that drive to the library.56. We can learn from the beginning of the passage that ____.A. the author and his brother had done well in schoolB. the author had been very concerned about his school workC. the author had spent much time watching TV after schoolD. the author had realized how important schooling was57. According to the passage, which of the following words can best describe the author’s mother?A. Tolerant and decisive.B. Aggressive and open-minded.C. Determined and farsighted.D. Persistent and literate.58. The underlined word“peevish”in the passage can be replaced by ____.A. naughtyB. bad-temperedC. patientD. obedient59. The author began to love books for the following reasons EXCEPT that ___.A. he could constantly review the plots in the booksB. he could visualize what he read in his mindC. he could get many rewards from his motherD. he realized that books offered him new experienceBNANCY DREW AND THE HIDDEN STAIRCASE(PG)Age 10+Sparkling book adaptation has great characters, some scares.“Nancy Drew and the Hidden Staircase”is based on a classic 1930 Nancy Drew mystery book and is aimed at teens and young teens. Although the story involves a politically motivated kidnapping and a supposedly haunted house, the scariest moment is during what turns out to be a dream sequence. Positive messages include courage and teamwork, and strong role models(mostly female)are at the center of the action.(89 minutes)WONDER PARK(PG)Age 8+Imaginative but intense adventure deals with worry and fear.“Wonder park”is an animated adventure about an imaginative girl named June(voiced by Brianna Denski),who’s spent years dreaming up a magical amusement park named Wonderland with her mom(Jennifer Garner). You can expect plenty of action(including explosions and peril),as well as the looming presence of worry and sadness, since June is dealing with the fact that her mom has a serious illness. The film celebrates imagination, curiosity and perseverance, and it underlines the importance of not letting fear stop you from being yourself and doing what you love.(93 minutes)Age 14+Dark, disconnected but smart alien invasion movie.“Captive State”is an alien-invasion movie set in a future Chicago. Some humans try to cooperate with the conquering aliens, while others try to rebel; there’s a very complex plan at the heart of the story. Violence is the biggest issue: Humans are killed, both vaporized by aliens and shot by guns. There are explosions, blood splatters, gory surgeries, gross alien effects, cyanide pills and lots of chaos and stress. The movie is more about its own big ideas than characters or emotions, but it’s smart enough that it should please most teen and adult sci-fi fans. John Goodman and Vera Farmiga co-star.(109 minutes)FIVE FEET APART(PG-13)Age 13+Strong acting saves predictable, sentimental love story.“Five Feet Apart”is based on the best-selling YA novel about Will(Cole Sprouse)and Stella(Haley Lu Richardson),two hospitalized 17-year-olds with cystic fibrosis(囊胞性纤维症)who fall in love. The story promotes treasuring those closest to you and has themes of perseverance and empathy.(115 minutes)60. If you are hooked on science fictions, which movie will you prefer according to the passage?A. WONDER PARKB. NANCY DREW AND THE HIDDEN STAIRCASEC. FIVE FEET APARTD. CAPTIVE STATE61. Which of the following statement is TRUE according to the passage?A. It’s appropriate to watch the film“Captive State”with a younger sister aged 5.B. The movie“Wonder Park”can teach you to be brave enough to face fear.C. It’s advisable of you to watch“Five Feet Apart”if you are free for one and half hours.D.“Nancy Drew and the Hidden Staircase”is adapted from a best-selling novel.62. After reading the passage, we can _____.A. know about the background of the film productionB. learn about the popularity of these filmsC. gain a thorough understanding of the filmsD. have the best option for the film we wantCThe company that revolutionized the delivery of information now aims to do the same with electricity. Technology powerhouse Google today announced it would spend "tens of millions" of dollars next year in research and development and investments in an effort to drive down the cost of large-scale renewable energy to make it cheaper than coal. Not only will Google be hiring engineers and energy experts for its new initiative,known as RE<C (renewable energy at less cost than coal), but it also will make investments in new companies—starting with those that focus on solar-thermal technology, enhanced geothermal, and high-altitude wind power."Cheap renewable energy is not only critical for the environment but also vital for economic development in many places where there is limited affordable energy of any kind," said Sergey Brin, Google co-founder and president of technology, in a prepared statement.Coal supplies 40 percent of the world's electricity and more than half of U.S. power, and if current trends continue, it is expected to grab an ever increasing share because it is a plentiful and cheap fuel for big consumers like the United States and Russia. But coal is also the worst fuel in its production of the global warming gas carbon dioxide. Google co-founder Larry Page said the company's goal is to produce one gigawatt(十亿瓦特)of renewable energy capacity that is cheaper than coal within "years, not decades." Google says that's enough electricity to power a city the size of San Francisco (about 330,000 households).are eSolar, of Pasadena, which is specializing in solar-thermal power, using large fields of mirrors to concentrate sunlight and generate steam to run utility-scale electric turbines(涡轮), and Makani of Alameda, which is developing wind energy technology that takes advantage of the much stronger and more reliable currents available at high altitudes.Google did not specify how much money it was putting into its projects with these companies but said they both had "promising scalable energy technologies." This portion of the initiative will be funded through the company's philanthropic arm, Google. org, which is not a traditional charity but can make equity(股票)investments in companies. Brin and Page have pledged(抵押)1 percent of Google's equity and profits toward efforts including climate change and global poverty.The RE<C program is the latest of a series of steps Google has taken on climate change. The company says it is on track in its goal to be carbon neutral in the near future.63. Which of the following statements is TRUE of the coal?A. It is a kind of controversial fuel given its large quantity and its harm to the environment.B. It is a plentiful and cheap fuel that will surely earn more market share.C. It will be totally replaced by the renewable energy in years because it produces the worst gas-carbon dioxide.D. It is supported by some enthusiastic countries like U.S. and Russia which rely heavily on the coal64. It can be inferred from the passage that ____.A. Google. org has made some crucial decisions in expanding the companyB. Google. org has focused on exploiting alternatives to traditional energyC. Google. org is a charity organization committed to funding the projects benefiting mankindD. Google. org is an environmental organization that specializes in promoting green fuel65. What can Not be learned about the Re<C Programme?A. It will come true in a few years with the efforts made.B. It is a programme of environmental protection.C. It is one of the measures taken to neutralize carbon.D. It will be realized through investment in solar and wind energy companies.\66. The best title of this passage is ___.A. Google’s RE<C ProgrammeB. Google, the Energy RevolutionaryC. Google, the Environmental ProtectorD. Google’s Renewable Energy ProjectSection CDirections:Read the following passage. Fill in each blank with a proper sentence given in the box. Each sentenceThe annual Venice Carnival is in full swing, with thousands of revelers(狂欢者)gathering the city’s canals andThe Carnevale di Venezia is thought to date back to the 11th century, making it one of the world’s oldest. Carnivals are held in many Catholic countries; such as Spain and Brazil, where they serve s a last chance to eat, drink and be merry before the deprivation of Lent, the 40 days of fasting(斋戒)that precede Easter.It is thought that the masks allowed Venetians to hide their identities, allowing the poor to mix with the wealthy, breaking strict social order, even if only for a brief and controlled period.___68___ The theme of Carnival 2019 is“Tutta colpa della Luna,”or“Blame the moon,”marking a half-century since man first walked on the satellite.To prevent overcrowding, authorities have installed turnstiles at the entrances to the historic St. Marks’ Square, closing it off to new visitors once 23,000 revelers have entered. Costumed revelers are also searched as they enter the square.Venice is situated across a group of 118 small islands that are separated by canals and linked by over 400 bridges. The islands are located in the shallow Venetian Lagoon, an enclosed bay that lies between the mouths of the Po and the Piave Rivers. ___69___ The lagoon and a part of the city are listed as a UNESCO World Heritage Site. Although most visitors stick to the traditional Carnival costumes of baroque gowns and bejeweled masks for women and black capes and threatening masks for men, more and more people are opting for their own unique interpretations.Some visitors use Carnival as an opportunity to show off a fantastic creation they’ve always dreamed of wearing. It doesn’t have to be Venetian. ___70___ At Carnival, everybody is free to be who—or what—they want to be. Perhaps a different gender—or even species. That’s the joy of the mask—nobody knows who or what the person wearing it was before Carnival.Ⅱ. Summary WritingDirections:Read the following passage. Summarize the main idea and the main point(s) of the passage in no more than 60 words. Use your own words as far as possible.71. Gardening can have many positive effects on your physical and mental health. Whether you’re growing fruit and veggies, flowers or succulents, getting your green thumb on can have a surprising number of health benefits for you and your family.Depending on the size of your garden, maintaining it can be a great way to be physically active. This could be as tough as mowing the lawn, or as gentle as getting a good stretch and practice stabilizing yourself while kneeling, sitting or reaching. In fact, gardening is a recommended activity as it can encourage the use of many motor skills, improve endurance and strength and keep you moving.These days, we can buy pretty much any fruit and vegetable we want from the supermarket, at any time of year. But gardening enables us to eat seasonally, which has important benefits for our bodies. For example, asparagus and apricots grow in spring and summer, while Brussels sprouts get going in winter. Eating seasonally can keep healthy eating exciting by encouraging you to try new recipes using in-season produce. You will also get a wider variety of different coloured produce, providing nutritious vitamins and minerals in your diet throught the year as the produce you eat changes with the seasons.Gardening is also a great way to relax, providing opportunities to still the mind and get away from the busyness of everyday life. There is even evidence to suggest that gardening can help case symptoms of mental illnesses like depression and anxiety. Whether you’re gardening by yourself, or getting the whole family involved, it’s a great way to spend some time outdoors, away from screens and to-do lists, and engage with nature. From repetitive tasks like weeding that provide opportunity for meditation, to practicing patience while waiting for plants to grow, gardening is a great exercise for your mind as well as your body.Ⅱ. TranslationDirections:Translate the following sentences into English, using the words given in the brackets.72. 这项新颁布的规定仅适用于一些突发情况。
2019年4月奉贤区高三数学二模参考答案一、填空题(1-6,每个4分,7-12每个5分,合计54分)1、02、160(必须要化简)3、R x x ∈-,24(可以不写定义域) 4、22(2)1x y -+=或03422=++-y x x5、5a c +=6、2-7、(0,1) 8、2211122x y -=(标准方程是唯一的表达形式),9、0∞(-,)或0<x 或{}0<x x 1011、2 12、[1,3] 二、选择题(每个5分,合计20分)13、D 14、C 15、A 16、A三、解答题(14+14+14+16+18=76分)17、(1)因为θαθcos ,sin ,sin 成等差数列,所以2sin sin cos αθθ=+··········2分又6πα=,所以sin cos 1θθ+=,即sin()42πθ+=所以2k θπ=或22k πθπ=+,k Z ∈·····················2分解出⎩⎨⎧==0cos 1sin θθ或⎩⎨⎧==1cos 0sin θθ····················1分因为θβθcos ,sin ,sin 成等比数列,所以θ的解集是空集···················1分 方法二:θαθcos ,sin ,sin 成等差数列,所以2sin sin cos αθθ=+··········2分 又6πα=,所以sin cos 1θθ+=,1cos sin22=+θθ,解出⎩⎨⎧==0cos 1sin θθ或⎩⎨⎧==1cos 0sin θθ····················3分因为θβθcos ,sin ,sin 成等比数列,所以θ的解集是空集···················1分(2)因为θαθcos ,sin ,sin 成等差数列,所以2sin sin cos αθθ=+因为θβθcos ,sin ,sin 成等比数列,所以2sin sin cos βθθ=⋅···················2分 所以2211cos 2cos 212sin (12sin )22αβαβ-=---·················2分 2sin cos 112()(12sin cos )22θθθθ+=---⋅·················2分 111sin cos sin cos 22θθθθ=--⋅-+⋅0=·················2分 18、(1)方法一:E CD CA ,=是中点,所以AD CE ⊥ 2分AD AB ⊥,所以CE 平行AB ,PCE ∠或其补角是异面直线所成的角 2分 计算可得12==PE CE ,,所求异面直线角为21arctan 3分方法二:建立空间直角坐标系,但必须证明AD CE ⊥,AD PE ⊥,CE PE ⊥ 若不写证明,直接写如图所示,以E 点为坐标原点,建立空间直角坐标系直接扣2分E PD PA ,=是中点,所以AD PE ⊥ABCD PE 面⊥,所以CE PE ⊥如图所示,以E 点为坐标原点,建立空间直角坐标系,0,-1,0(0,10),(1,10),(2,00),(0,01)D A B C P (), ,,,,··········2分 (201),(100)PC AB =-=u u u r u u u r ,,,, ···········2分异面直线PC 与AB 所成角为θ225cos ||||5||||211PC AB PC AB θ⋅===⋅+⋅u u u r u u u ru u u r u u u r 异面直线PC 与AB 所成角为25arccos···········2分 (2)设面PDC 的一个法向量为1(,,)n u v w =r 11,n DP n DC ∴⊥⊥u r u u u r u r u u u r,又(011),(21,0)DP DC ==u u u r u u u r ,,, 即11=00u+1v+1w=02u+1v+0w=0=0n DP n DC ⎧⋅⋅⋅⋅⎧⎪⇒⎨⎨⋅⋅⋅⋅⎩⎪⎩u r u u u r u r u u u r 不妨令2v =,则2,1w u =-=-,即面PDC 的一个法向量为1(1,2,2)n =--r,···········2分 同理可得面PAB 的一个法向量为2(0,1,1)n =r···········2分令1n u r 和2n u u r 所成角为ϕ,则1212cos 0||||n n n n ϕ⋅===⋅u r u u r u r u u r ···········2分 所以2πϕ=,即面PDC 与平面PAB 所成二面角的大小为2π.···········1分19、(1)由题意得:当1x =时,23(1)()47.4244.422f a x =-+=,即12a =-····2分 所以当02x ≤<时,23()12()47.422f x x =--+, 在32x =时取到最大值47.42 ·········2分 又当2≥x 时,0.3()54.2710.18xf x e -=+是单调递减函数,在2x =时取到最大值96.39 ·········2分39.9647.42<,所以喝1瓶啤酒1.5小时血液中的酒精含量达到最大值47.42·····1分(2)当02x ≤<时,23()12()47.422f x x =--+,此时血液中酒精含量范围是(20.42,47.42],不可以驾车;·········3分 当2≥x 时,0.3()54.2710.18xf x e-=+单调递减函数所以令0.3()54.2710.1820xf x e -=+< 即982ln5427 5.6990.3x >≈-小时,·········2分所以喝1瓶啤酒后342分钟后才可以驾车。
9.下列对“陋室不陋”的原因理解错误的项是。
(3分)A.因为陋室处在一个有仙有龙的地方。
B.因为陋室里住的是品德高尚的人。
C.因为陋室环境幽美清雅,陋室生活恬然自适。
D.因为陋室主人安贫乐道、情趣高雅。
(四)阅读下文,完成第10-13题(12分)濮州刺史庞相寿坐贪污解任,自陈①尝在秦王②幕府。
上怜之,欲听还旧任。
魏征谏曰:“秦王左右,中外③甚多,恐人人皆恃恩私,足使为善者惧。
”上欣然纳之。
谓相寿曰:“我昔为秦王,乃一府之主;今居大位,乃四海④之主,不得独私故人。
大臣所执如是,朕何敢违!”赐帛遣之,相寿流涕而去。
【注释】①陈:陈述。
②秦王:唐太宗李世民。
他在称帝前被封为秦王。
③中外:宫内、宫外的故人。
④四海:整个国家。
10.解释文中加点的词。
(4分)(1)濮州刺史庞相寿坐.贪污解任()(2)足使.为善者惧()11.下列对画线句意思的理解,最恰当的一项是。
(3分)A.大臣坚持像这样秉公执法,我怎么敢违背他呢?B.大臣都坚持这个观点,我怎么敢违反原则呢?C.大臣坚持像这样秉公执法,我怎么敢违反原则呢?D.大臣都坚持这个观点,我怎么敢违背他呢?12.从文中看,唐太宗“怜之”的原因是“”,“纳之”的表现是。
(3分)13.为本文拟一个题目:口口口口口口口口(8个字以内)(2分)二、现代文(40分)(一)阅读下文,完成第14-18题(20分)守“拙”求进①在中国文化中,尚拙是一大特点。
“文以拙进,道以拙成”,“天下之至拙,能胜天下之至巧”,讲的都是对守拙的推崇。
的确,做人守拙,以拙求进,往往是一个人有所成就的基础。
②“书读百遍,其义自见”,是读书求学之拙。
多少人正是用这样的笨功夫,实现了学养质的提升。
“不积跬步,无以至千里;不积小流,无以成江海”,是干事创业之拙。
不下苦功、不打牢基础,就不可能在事业上采撷到成功的果实。
“功成不必在我”,是为官从政之拙,惟有这样的胸襟和气度,才能获得人们心灵深处的掌声。
③“责守明则谋政专,勤于正事必疏于邪门。
上海市奉贤区2019届高三二模数学试卷
2019、4
一、填空题(本大题共12题,1-6每题4分,7-12每题5分,共54分)
1、计算行列式
2、在得展开式中常数项为
3、设函数得图像经过点(2,5),则得反函数
4、参数方程(为参数,)表示得普通方程为
5、若关于、得二元一次线性方程组得增广矩阵就是,该方程组得解为,
则
6、若、满足约束条件,则得最小值为
7、设等比数列中,首项,若就是递增数列,则公比得取值范围就是
8、双曲线得右焦点恰好就是得焦点,它得两条渐近线得夹角为,则双曲线得标准
方程为
9、已知函数就是定义在上得奇函数,且在单调递减,当时,
恒有成立,则得取值范围就是
10、随机选取集合{地铁5号线,,莘南线}得非空子集与且得概率就是
11、实系数一元二次方程得两个虚根、,得实部,
则得模等于1,则实数
12、设点在以为圆心,半径为1得圆弧上运动(包含
、两个端点),,且,
得取值范围为
二、选择题(本大题共4题,每题5分,共20分)
13、在等差数列中,设,则就是得()
A、充分非必要条件
B、必要非充分条件
C、充要条件
D、既非充分非必要条件
14、如图得后母戊鼎(原称司母戊鼎)就是迄今为止世界上出土最大、最重得青铜礼器,有“镇国之宝”得美誉,后母戊鼎双耳立,折沿宽缘,直壁,深腹,平底,下承中空“柱足”,造型厚重端庄,气势恢宏,就是中国青铜时代辉煌文明得见证,右图为鼎足近似模型得三视图
(单位:),经该鼎青铜密度为(单位:),则根据三视图信息可得一个柱足得重量约为(重量= 体积×密度,单位:)()
A、1250
B、5000
C、3750
D、15000
15、已知△得周长为12,,,则顶点得轨迹方程为()
A、B、
C、D、
16、设有△,作它得内切圆,得到得三个切点确定一个
新得三角形△,再作△得内切圆,得到得三个切
点又确定一个新得三角形△,以此类推,一次一次不停
地作下去可以得到一个三角形序列△(),
它们得尺寸越来越小,则最终这些三角形得极限情形就是()
A、等边三角形
B、直角三角形
C、与原三角形相似
D、以上均不对
三、解答题(本大题共5题,共14+14+14+16+18=76分)
17、已知、、成等差数列,、、成等比数列、
(1)若,求;(2)求得值、
18、如图,在四棱锥中,,,得中点就是,面,,,,、
(1)求异面直线与所成角得大小;
(2)求面与平面所成二面角得大小、
19、国家质量监督检验检疫局于2004年5月31日发布了新得《车辆驾驶人员血液、呼气酒精含量阀值与检验》国家标准,新标准规定,车辆驾驶人员血液中得酒精含量大于或等于20毫克/百毫升,小于80毫克/百毫升为饮酒驾车,血液中得酒精含量大于或等于80毫克/百毫升为醉酒驾车,经过反复试验,喝一瓶啤酒后酒精在人体血液中得变化规律得“散点图”
如下图,该函数近似模型如下:
2
0.3
3
()47.4202
()2
54.2710.182
x
a x x
f x
e x
-
⎧
-+≤<
⎪
=⎨
⎪+≥
⎩
,又已知刚好过1
小时时测得酒精含量值为44、42毫克/百毫升,根据上述条件,解答以下问题:(1)试计算喝1瓶啤酒多少小时血液中得酒精含量达到最大值?最大值就是多少?(2)试计算喝1瓶啤酒后多少小时后才可以驾车?(时间以整分钟计算)
20、已知两点,,动点在轴上得射影就是,且,
(1)求动点得轨迹方程;
(2)设直线、得两个斜率存在,分别记为、,若,求点得坐标;(3)若经过点得直线与动点得轨迹有两个交点为、,当
时,求直线得方程
21、统计学中将(,)个数、、、得与记作,
(1)设(),求
(2)就是否存在互不相等得非负整数,,使得成立,若存在,请写出推理过程;若不存在请证明;
(3)设()就是不同得正实数,,对任意得(),都有,判断就是否为一个等比数列,请说明理由
参考答案
一、填空题
1、0
2、160
3、,
4、
5、5
6、
7、
8、
9、10、11、2 12、
二、选择题
13、D 14、C 15、A 16、A
三、解答题
17、(1)空集;(2)0、
18、(1);(2)、
19、(1)喝1瓶啤酒1、5小时血液中得酒精含量达到最大值,最大值就是47、42;(2)喝1瓶啤酒后342分钟后才可以驾车、
20、(1);
(2)或或或;
(3)、
21、(1)79;(2)存在,推理过程略;(3)就是等比数列,用数学归纳法证明、。