深圳市耀华实验学校2020届高三上学期期中考试文数
广东省深圳市耀华实验学校高三上学期期中考试生物试题
绝密★启用前2017-2018学年第一学期期中考试高中三年级生物（理科班）试题卷2017.11 本试卷共3页，24小题，满分100分。
考试用时50分钟。
注意事项：1．答卷前，考生首先检查答题卷是否整洁无缺损，用0.5毫米黑色字迹的签字笔在答题卷指定位置填写自己的班级、姓名、学号和座位号。
2．选择题每小题选出答案后，用2B铅笔把答题卷上对应题目的答案标号涂黑，如需改动，用橡皮擦干净后，再选涂其它答案，答案不能答在试卷上。
不按要求填涂的，答案无效。
3．非选择题必须用0.5毫米黑色字迹的签字笔作答，答案必须写在答题卷各题目指定区域内相应位置上，请注意每题答题空间，预先合理安排；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．考生必须保持答题卷的整洁，考试结束后，将答题卷交回。
一、选择题：本大题共20小题，每小题2.5分，满分50分。
1．下列实验操作正确的是：A. 观察未经染色的动物细胞时，为了看清细胞的边缘和细胞核，将视野调暗B. 探究温度对酶活性的影响时，将酶与底物溶液在室温下混合后于不同温度下保温C. 分离绿叶中色素时，沿铅笔线均匀画滤液细线并迅速重复2〜3次D. 制作根尖细胞有丝分裂装片时，盖上盖玻片后用拇指轻压盖玻片2．下图为夏季某绿色植物连续两昼夜内C02吸收量和释放量的变化曲线图。
S1～S3表示曲线与时间轴围成的面积。
下列对该植物的分析叙述正确的是：A. a点时植物开始进行光合作用B. b点时该植物根尖分生区细胞消耗[H]的场所是线粒体和叶绿体C. c点时光合作用消耗的C02量与呼吸作用产生的C02量相等D. 该植物两昼夜积累的有机物总量等于S1+S23．如图表示生物体内细胞代谢的过程，有关叙述错误的是：A. 植物细胞的②过程发生在类囊体膜上，③发生在叶绿体基质中B. 某种植物细胞④过程的进行需要的能量可来自⑥⑦⑧C. 若植物缺Mg则首先会受到显著影响的生理过程是②D. 若产酒精消耗等量的葡萄糖，则⑧过程产生的C02是⑥过程产生的C02的三倍4．研究人员对2年生香榧苗进行不同程度的遮阴处理，一段时间后测定其叶片的各项生理特征，结果如下表。
2019-2020学年深圳市耀华实验学校初中部高三语文上学期期中试题及答案
2019-2020学年深圳市耀华实验学校初中部高三语文上学期期中试题及答案一、现代文阅读（36分）(一)现代文阅读I(9分)阅读下面的文字，完成下面小题。
材料一：2018年4月16日晚，美国商务部发布公告称，美国政府未来7年禁止中兴通讯向美国企业购买敏感产品。
2018年4月19日，针对中兴被美国“封杀”的问题，商务部表示，中方密切关注进展，随时准备采取必要措施，维护中国企业合法权益。
2018年4月20日，中兴通讯发布关于美国商务部激活拒绝令的声明，称在相关调查尚未结束之前，美国商务部工业与安全局执意对公司施以最严厉的制裁，对中兴通讯来说极不公平，“不能接受”！2018年5月，中兴通讯公告称，受拒绝令影响，本公司主要经营活动已无法进行。
（摘编自“网易”“新浪”“凤凰网”）材料二：芯片贸易已经成为中国进出口贸易逆差的最大“黑洞”。
海关总署数据显示，最近几年集成电路进口额均超过2000亿美元，甚至长期超过石油进口额。
2017年，这一数额达到了2601亿美元，进出口贸易逆差达到最高值的1932.6亿美元。
StrategyAnalytics分析师杨光表示，危机肯定会刺激自主芯片产业的发展，但想依靠国产芯片帮助中兴渡过危机确实是远水解不了近渴，芯片行业的发展是个长期的过程，需要持续投入，而且有些必要的学费恐怕也是绕不过去的。
在可预见的未来几年内，比如SG开始这几年，国内芯片恐怕还是要靠国际市场供应。
（摘编自《“芯痛”背后国产芯片征途漫漫，“中国芯”短板何在》，《新京报》）材料三：美国商务部日前对中国中兴通讯公司采取出口管制措施。
这一事件给中国科技企业敲响了警钟，促使科技界和更多企业以更长远眼光，谋求更自主、自强的发展。
近些年来，中国在全球高科技领域不断追赶的态势愈发突出，在不少领域实现“并跑”乃至“领跑”。
在北斗卫星导航系统、量子通信、探月工程、可燃冰开采等诸多方面，中国都取得重大突破。
作为发展中国家，中国的科技发展速度和成就足够令人自豪。
2020年深圳市耀华实验学校初中部高三语文期中考试试卷及答案
2020年深圳市耀华实验学校初中部高三语文期中考试试卷及答案一、现代文阅读（36分）(一)现代文阅读I(9分)阅读下面的文字，完成下列小题。
材料一：2018年7月15日国家食药监总局公告称，在飞行检查中发现长春长生生物公司的冻干人用狂犬病疫苗生产存在记录造假等严重问题。
疫苗事件引发了极大关注，但疫苗真假的定义并没有明确的界定。
事实上，多位业内人士表示，更改了生产参数的疫苗、效价不合格的疫苗并不等同于假疫苗或者“毒”疫苗。
某药物研发平台创始人兼CEO张清(化名)介绍，通常提到的假疫苗有两种，一种是疫苗上市之前研发数据错误导致疫苗为假，另一种是生产过程中导致的，具体来说有原料选用与生产流程问题，原料选取的优劣和生产过程是否规范直接影响质量，长春长生的假疫苗就是生产流程中更改了参数导致的问题。
某疫苗研发公司李强(化名)表示，“此次出事的狂犬疫苗是长春长生生物更改了生产参数，但更改了哪些，之后质量是否受到影响目前尚未公布，严格意义上也不能定性为假疫苗，但是企业不严格按照生产标准来生产疫苗肯定是违法的，应该受到严惩。
”《新京报·为什么疫苗容易出问题？》材料二：2013-2030 年全球疫苗行业市场规模变化趋势及预测全球市场情况数据搜狐网《疫苗行业深度研究分析》材料三：北京协和医学院基础医学院教授许雪梅在接受《生命时报》记者采访时说，包括天花、白喉、脊髓灰质炎、狂犬病、流行性乙型脑炎等在内的大部分病疫的控制或消除，都是因为疫苗起了作用。
特别是对新冠肺炎这种传播性强的疾病来说，疫苗研发更是必须的。
我们谁也不能保证，新冠肺炎未来不会成为流感样常态化传染病，如果能够研制出特效疫苗，就如同为人体增加了一道屏障，这是最理想的控制传染病疫情的方法。
一般来说，疫苗分为减毒活疫苗、灭活疫苗、亚单位疫苗、重组微生物载体疫苗、核酸疫苗等类型。
不同类型疫苗的研发手段略有不同，有些需要分离选取合适的病毒毒株，有些是选取病毒里面能够制造疫苗的关键蛋白或是基因序列，在实验研究筛选获得候选疫苗后，再进行深入的开发研究。
广东省深圳市耀华实验学校高三上学期期中考试英语试题(实验班)
2017-2018学年第一学期期中考试高三年级英语试题2017.11本试卷共10页，三大题, 满分150分。
考试用时120分钟。
注意事项：1．答卷前，考生首先检查答题卡是否整洁无缺损，监考教师分发的考生信息条形码是否正确；之后务必用0.5毫米黑色字迹的签字笔在答题卡指定位置填写自己的学校、姓名和考生号，同时，将监考教师发放的条形码正向准确粘贴在答题卡的贴条形码区，请保持条形码整洁、不污损。
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的答案标号涂黑，如需改动，用橡皮擦干净后，再选涂其它答案，答案不能答在试卷上。
不按要求填涂的，答案无效。
3．非选择题必须用0.5毫米黑色字迹的签字笔作答，答案必须写在答题卡各题目指定区域内相应位置上，请注意每题答题空间，预先合理安排；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．考生必须保持答题卡的整洁，考试结束后，将答题卡交回。
第I卷注意事项：1．答第I卷前，考生务必将自己的姓名、准考证号填写在答题卡上。
2．选出每小题答案后，用铅笔把答题卡上对应题目的答案标号涂黑。
如需改动，用橡皮擦干净后，再选涂其他答案标号。
不能答在本试卷上，否则无效。
第一部分完形填空（共20小题；每小题1.5分，满分30分）阅读下面短文，掌握其大意，然后从1 ~ 20各题所给的A、B、C和D中，选出最佳选项，并在答题卡上将该项涂黑。
I have always been an independent person, but I have come to know that being independent does not mean refusing help. I may still be 1 with asking for help, but I try to accept. Furthermore, I will even 2 help and when my offers are refused, I am 3 willing to walk away. And all these changes came from a disaster on anisland.Sometimes a person's independence is a 4 of pride, daring, stubbornness and luck. I used to be too 5 since I was little. I was once a traveler who never asked for 6 , choosing instead to struggle with maps and signs until I found my way.Then one day on the island of Koh Phangan, in Thailand, everything 7 . I was swimming in the ocean with Sean, my fiancé, when he was 8 by a box jellyfish (箱形水母). He 9 within three minutes, 25 years old. Yet when onlookers and travelers asked if I wanted 10 , stubborn pride and force of habit 11 me accepting. But two young Israeli women stayed. 12 my protest, they were with me even when the police tried to cover up the 13 of Sean's death. It was listed as drunk drowning to avoid hurting the 14 industry. The Israeli women 15 have walked away.16 , without even telling me, they 17 their schedule rather than leave me behind.18 I didn't realize it at the time, I now believe I would not have 19 the disaster without these great women. Actually, the person who needs help the most is usually the last person to ask for it. I have learned 20 is better than refusing because it not only helps you walk out of trouble, but also helps you know the real meaning of life.1. A. struggling B. dealing C. confused D. satisfied2. A. accept B. offer C. seek D. desire3. A. occasionally B. frequently C. usually D. seldom4. A. range B. symbol C. way D. mix5. A. adventurous B. brave C. independent D.creative6. A. money B. equipment C. directions D. suggestions7. A. happened B. messed C. disappeared D. changed8. A. attacked B. caught C. followed D. impressed9. A. sunk B. died C. failed D. recovered10. A. company B. advice C. comfort D. evidence11. A. kept B. prevented C. denied D. suggested12. A. In spite of B. As a result of C. In terms ofD. In case of13. A. proof B. news C. fact D. cause14. A. medicine B. entertainment C. tourism D. fishing15. A. must B. need C. should D. could16. A. Therefore B. Otherwise C. Instead D. Besides17. A. delayed B. made C. considered D. threw18. A. When B. While C. Because D. If19. A. avoided B. experienced C. survived D. suffered20. A. refusing B. accepting C. giving D. begging第二部分阅读理解（供25小题；每小题2分，满分50分）第一节（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A、B、C和D中，选出最佳答案，并在答题卡上将该项涂黑。
广东省深圳市耀华实验学校2020届高三数学上学期期中试题 文(实验班)
广东省深圳市耀华实验学校2020届高三数学上学期期中试题 文（实验班）本试卷共22小题，满分150分，考试用时120分钟1．若集合{}{}31,12>-<=<<-=x x x B x x A 或,则A ∩B= A ．{x |-2<x <-1}B ．{x |-2<x <3}C ．{x |-1<x <1}D ．{x |1<x <3}2．命题“042,2≤+-∈∀x x R x ”的否定为A ．042,2≥+-∈∀x x R xB ．042,0200>+-∈∃x x R x C ．042,2≤+-∉∀x x R x D ．042,0200>+-∉∃x x R x 3．已知α的终边与单位圆的交点)23,(x P ,则αtan = A ．3B ．3±C ．33 D ．33±4．下列函数中，周期为π的奇函数为 A ．y ＝sin x cos x B ．y ＝sin 2xC ．y ＝tan 2xD ．y ＝sin 2x ＋cos 2x5．已知a >0，b >0，a ，b 的等比中项是1，且m ＝b ＋1a ，n ＝a ＋1b，则m ＋n 的最小值是A ．3B ．4C ．5D ．66．若x ，y 满足⎩⎪⎨⎪⎧x ≤3，x ＋y ≥2，y ≤x ，则x ＋2y 的最大值为A ．1B ．3C ．5D ．97．已知S n 是数列{a n }的前n 项和，且S n ＋1＝S n ＋a n ＋3，a 4＋a 5＝23，则S 8＝ A ．72 B ．88 C ．92 D ．988．函数f (x )＝x a满足f (2)＝4，那么函数g (x )＝|log a (x ＋1)|的图象大致为9．若函数f (x )＝x 3－2cx 2＋x 有极值点，则实数c 的取值范围为A ．⎣⎢⎡⎭⎪⎫32，＋∞B ．⎝ ⎛⎦⎥⎤－∞，－32∪⎣⎢⎡⎭⎪⎫32，＋∞C ．⎝⎛⎭⎪⎫32，＋∞ D ．⎝ ⎛⎭⎪⎫－∞，－32∪⎝ ⎛⎭⎪⎫32，＋∞10．已知向量＝(3,1)，＝(－1,3)，＝m －n (m >0，n >0)，若m ＋n ＝1，则|OC ―→|的最小值为 A ．52 B ．102C ． 5D ．10 11．已知△ABC 的内角A ，B ，C 的对边分别为a ，b ，c ，若cos C ＝223，b cos A ＋a cos B ＝2，则△ABC 的外接圆面积为A ．4πB ．8πC ．9πD ．36π12．设函数f (x )＝e x＋x －2， g (x )＝ln x ＋x 2－3．若实数a ，b 满足f (a )＝0，g (b )＝0，则 A ．g (a )<0<f (b ) B ．f (b )<0<g (a ) C ．0<g (a )<f (b )D ．f (b )<g (a )<0 第Ⅱ卷二、填空题：本大题共4小题，每小题5分．共20分,13． 若)(x f y =是函数)1,0(≠>=a a a y x 的反函数，且1)2(=f ，则)(x f ＝________． 14． 若tan θ＝3，则sin 2θ1＋cos 2θ＝_______．15．已知⎩⎨⎧≥<--=)1(log )1()3()(x x x a x a x f a ,是(-∞,+∞)上的增函数,那么实数a 的取值范围_________．16．已知函数)(sin cos )(R x x x x f ∈=，则下列四个命题中正确的是________．（写出所有正确命题的序号）①若;),()(2121x x x f x f -=-=则 ②)(x f 的最小正周期是π2； ③)(x f 在区间⎥⎦⎤⎢⎣⎡44-ππ，上是增函数；④)(x f 的图象关于直线43π=x 对称． 三、解答题：本题共6小题，共70分，解答应写出文字说明、证明过程或演算步骤． 17．（本题满分10分）已知数列{a n }是公差不为0的等差数列，首项a 1＝1，且a 1，a 2，a 4成等比数列． (1)求数列{a n }的通项公式；(2)设数列{b n }满足na n n ab 2+=，求数列{b n }的前n 项和T n .18．（本题满分12分）△ABC 的内角A ，B ，C 的对边分别为a ，b ，c ．已知sin A ＋3cos A ＝0，a ＝27，b ＝2．(1)求c ；(2)设D 为BC 边上一点，且AD ⊥AC ，求△ABD 的面积．19．（本题满分12分）已知函数f (x )＝e x－ax －1，其中e 是自然对数的底数，实数a 是常数． (1)设a ＝e ，求函数f (x )的图象在点(1，f (1))处的切线方程； (2)讨论函数f (x )的单调性．20．（本题满分12分）设函数f (x )＝sin ⎝ ⎛⎭⎪⎫ωx －π6＋sin ⎝ ⎛⎭⎪⎫ωx －π2，其中0<ω<3．已知f ⎝ ⎛⎭⎪⎫π6＝0．(1)求ω；(2)将函数y ＝f (x )的图象上各点的横坐标伸长为原来的2倍(纵坐标不变)，再将得到的图象向左平移π4个单位，得到函数y ＝g (x )的图象，求g (x )在⎣⎢⎡⎦⎥⎤－π4，3π4上的最小值．21．（本题满分12分）已知函数f (x )＝x ln x ．(1)若函数g (x )＝f (x )＋ax 在区间[e 2，＋∞)上为增函数，求实数a 的取值范围； (2)若对任意x ∈(0，＋∞)，f (x )≥－x 2＋mx －32恒成立，求实数m 的最大值．22（本题满分12分）．设曲线1*:()()n n C f x x n N +=∈在点11,()22P f ⎛⎫-- ⎪⎝⎭处的切线与y 轴交于点(0,)n n Q y .（Ⅰ）求数列{}n y 的通项公式；（Ⅱ）设数列{}n y 的前n 项和为n S ，猜测n S 的最大值并证明你的结论.2020届高三期中考试数学(文科)参考答案一．选择题 题号 1 2 3 4 5 6 7 8 9 10 11 12 答案 ABBABDCCDCCA二．填空题 13.x 2log 14.3 15. )3,23[ 16. ③④三．解答题17.解：(1)设数列{a n }的公差为d ，由已知得，a 22＝a 1a 4， 即(1＋d )2＝1＋3d ，解得d ＝0或d ＝1. 又d ≠0，∴d ＝1，可得a n ＝n .(2)由(1)得b n ＝n ＋2n， ……………….6分 ∴T n ＝(1＋21)＋(2＋22)＋(3＋23)＋…＋(n ＋2n) ＝(1＋2＋3＋…＋n )＋(2＋22＋23＋ (2)) ＝n n ＋12＋2n ＋1－2. ……………….12分18解：(1)由已知可得tan A ＝－3，所以A ＝2π3.在△ABC 中，由余弦定理得28＝4＋c 2－4c cos2π3， 即c 2＋2c －24＝0. 解得c ＝4(负值舍去) ……………….6分 (2)由题设可得∠CAD ＝π2，所以∠BAD ＝∠BAC －∠CAD ＝2π3－π2＝π6. 故△ABD 的面积与△ACD 的面积的比值为12AB ·AD ·sin π612AC ·AD ＝1.又△ABC 的面积为12×4×2×sin 2π3＝23，所以△ABD 的面积为 3. （方法不唯一） ……………….12分19．解：(1)∵a ＝e ，∴f (x )＝e x－e x －1， ∴f ′(x )＝e x－e ，f (1)＝－1，f ′(1)＝0.∴当a ＝e 时，函数f (x )的图象在点(1，f (1))处的切线方程为y ＝－1.……………….4分 (2)∵f (x )＝e x－ax －1，∴f ′(x )＝e x－a . 当a ≤0时，f ′(x )＞0，故f (x )在R 上单调递增； 当a ＞0时，由f ′(x )＝e x－a ＝0，得x ＝ln a ，∴当x ＜ln a 时，f ′(x )＜0，当x ＞ln a 时，f ′(x )＞0， ∴f (x )在(-∞，ln a )上单调递减，在(ln a ，＋∞)上单调递增． 综上，当a ≤0时，f (x )在R 上单调递增；当a ＞0时，∴f (x )在(-∞，ln a )上单调递减，在(ln a ，＋∞)上单调递增． ……………….12分 20.解：(1)因为f (x )＝sin ⎝⎛⎭⎪⎫ωx －π6＋sin ⎝ ⎛⎭⎪⎫ωx －π2， 所以f (x )＝32sin ωx －12cos ωx －cos ωx ＝32sin ωx －32cos ωx ＝3⎝ ⎛⎭⎪⎫12sin ωx －32cos ωx ＝3sin ⎝ ⎛⎭⎪⎫ωx －π3.因为f ⎝ ⎛⎭⎪⎫π6＝0，所以ωπ6－π3＝k π，k ∈Z.故ω＝6k ＋2，k ∈Z.，又0<ω<3，所以ω＝2. ……………….6分 (2)由(1)得f (x )＝3sin ⎝⎛⎭⎪⎫2x －π3，所以g (x )＝3sin ⎝ ⎛⎭⎪⎫x ＋π4－π3＝3sin ⎝ ⎛⎭⎪⎫x －π12. 因为x ∈⎣⎢⎡⎦⎥⎤－π4，3π4，所以x －π12∈⎣⎢⎡⎦⎥⎤－π3，2π3，当x －π12＝－π3，即x ＝－π4时，g (x )取得最小值－32. ……………….12分21.解：(1)由题意得g ′(x )＝f ′(x )＋a ＝ln x ＋a ＋1. ∵函数g (x )在区间[e 2，＋∞)上为增函数， ∴当x ∈[e 2，＋∞)时，g ′(x )≥0， 即ln x ＋a ＋1≥0在[e 2，＋∞)上恒成立． ∴a ≥－1－ln x .令h (x )＝－ln x －1，∴a ≥h (x )max ， 当x ∈[e 2，＋∞)时，ln x ∈[2，＋∞)， ∴h (x )∈(－∞，－3]，∴a ≥－3，即实数a 的取值范围是[－3，＋∞)． ……………….6分 (2)∵2f (x )≥－x 2＋mx －3， 即mx ≤2x ln x ＋x 2＋3，又x ＞0，∴m ≤2x ln x ＋x 2＋3x在x ∈(0，＋∞)上恒成立．记t (x )＝2x ln x ＋x 2＋3x ＝2ln x ＋x ＋3x.∴m ≤t (x )min .∵t ′(x )＝2x ＋1－3x 2＝x 2＋2x －3x 2＝x ＋3x －1x 2，令t ′(x )＝0，得x ＝1或x ＝－3(舍去)．当x ∈(0,1)时，t ′(x )＜0，函数t (x )在(0,1)上单调递减； 当x ∈(1，＋∞)时，t ′(x )＞0，函数t (x )在(1，＋∞)上单调递增． ∴t (x )min ＝t (1)＝4.∴m ≤t (x )min ＝4，即m 的最大值为4. ……………….12分22解：（Ⅰ）/*()(1)()nf x n x n N =+∈Q , ………………… 1分∴点P 处的切线斜率1(1)2nn k n ⎛⎫=+- ⎪⎝⎭, ……………2分∴切线方程为:1111(1)()222n ny n x +⎛⎫⎛⎫--=+-+ ⎪⎪⎝⎭⎝⎭, …………………… 3分令0x =得: 1111222n nn n y ++⎛⎫⎛⎫=-+⋅- ⎪⎪⎝⎭⎝⎭,故数列{}n y 的通项公式为:122nn n y ⎛⎫=⋅- ⎪⎝⎭.…… 4分(2) 23112131122222222nn n S ⎛⎫⎛⎫⎛⎫⎛⎫=⋅-+⋅-+⋅-++⋅- ⎪ ⎪ ⎪ ⎪⎝⎭⎝⎭⎝⎭⎝⎭L ------①两边同乘12-得:234111121311222222222n n n S +⎛⎫⎛⎫⎛⎫⎛⎫-⋅=⋅-+⋅-+⋅-++⋅- ⎪ ⎪ ⎪ ⎪⎝⎭⎝⎭⎝⎭⎝⎭L ------②①-②得: 231311111111122222222222nn n n s +⎛⎫⎛⎫⎛⎫⎛⎫⎛⎫⋅=⋅-+⋅-+⋅-++⋅--⋅- ⎪ ⎪ ⎪ ⎪ ⎪⎝⎭⎝⎭⎝⎭⎝⎭⎝⎭L … 6分23111111322222nn n S n +⎛⎫⎛⎫⎛⎫⎛⎫⎛⎫∴=-+-+-++--⋅- ⎪ ⎪ ⎪ ⎪ ⎪⎝⎭⎝⎭⎝⎭⎝⎭⎝⎭L11111221212n n n ++⎛⎫--- ⎪⎛⎫⎝⎭=-⋅- ⎪⎝⎭+1111232nn n +⎛⎫-- ⎪⎛⎫⎝⎭=--⋅- ⎪⎝⎭∴12311922nn n S ⎡⎤+⎛⎫=⋅--⎢⎥ ⎪⎝⎭⎢⎥⎣⎦…………………… 8分其中1114S y ==-, 2120S y y =+=,3316S =-,4116S =- 猜测n S 的最大值为20S =.证明如下: …………………… 10分(i)当n 为奇数时，123110922nn n S ⎡⎤+⎛⎫=-⋅+<⎢⎥ ⎪⎝⎭⎢⎥⎣⎦； …………………… 11分(ii)当n 为偶数时，1123192n n n S ++⎛⎫=⋅- ⎪⎝⎭,设123()2n n h n ++=,则383(2)2n n h n +++=. 31383239(2)()0222n n n n n n h n h n ++++++-=-=-<, ∴(2)()h n h n +<. …………………… 12分故123()2n nh n ++=的最大值为(2)1h =,即nS 的最大值为20S =. ……………………。
2020届深圳市耀华实验学校初中部高三语文上学期期中考试试卷及参考答案
2020届深圳市耀华实验学校初中部高三语文上学期期中考试试卷及参考答案一、现代文阅读（36分）(一)现代文阅读I(9分)阅读下面的文字，完成下面小题。
材料一：大数据技术是21世纪最具时代标志的技术之一。
国务院发布的《促进大数据发展行动纲要》中提出“大数据是以容量大、类型多、存取速度快、应用价值高为主要特征的数据集合”。
简单的说，大数据就是将海量碎片化的信息数据能够及时地进行筛选、分析,并最终归纳、整理出我们需要的资讯。
大数据对各行各业都有着重要影响，教育也不例外。
互联网时代，没有大数据分析，教育就是在玩概念。
在人类社会的动态博弈中，教育的需求是长期的、动态的。
将大数据的概念引入到教育里，能够让我们在教育或者被教育的过程中，更清晰更准确更迅速，甚至能提前“预知”成功。
基于大数据的精确学情诊断、个性化学习分析和智能决策支持，大大提升了教育品质，也帮助了老师及时掌握学生的真实信息，真正实现因材施教。
大数据的到来，学生在一个课堂中的需求与态度，经由大数据的处理变得可视，这也为教研活动提供了更鲜活的素材。
大数据的渗入真正实现了个性化教育和个性化学习。
基于大数据，可以精细刻画学生特点、洞察学生学习需求、引导学生学习过程、诊断学生学习结果。
通过对学习者学习背景和过程相关的各种数据测量、收集和分析，从海量学生相关的数据中归纳分析各自的学习风格和学习行为，进而提供个性化的学习支持。
此外，大数据可以在保障教育规模的情况下实现差异化，一方面可以因材施教，教师可以根据学生的不同需求推荐合适的学习资源，另一方面可以达成更大的教育规模。
比如MOOC平台突破了传统教育中实体教室的限制，课程受众面极广，能同时满足数十万学习者学习需求。
由此可见，大数据对教育的影响深远重大。
大数据与教育相结合是大势所趋。
(2019-03-20搜狐新闻，《大数据对教育的影响》)材料二：材料三：大数据主要在四个方面对教育产生了影响，主要体现在：(一)对数据价值的认识。
广东省深圳市耀华实验学校2022届高三上学期期中考试数学(文)试题(实验班) Word版含答案
绝密★启用前2021－2022学年第一学期期中考试 高三班级试验班(文科数学)试题卷本试卷共22小题，满分150分.考试用时120分钟. 留意事项：1．答卷前，考生先检查试卷与答题卷是否洁净无缺损，并用黑色字迹的签字笔在答题卷指定位置填写自己的班级、姓名、学号和座位号。
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不按以上要求作答的答案无效。
4．考生必需保持答题卷的洁净，考试结束后，将答题卷交回。
一、选择题：本大题共12小题，每小题5分，满分60分． 1．设0a b <<，则下列不等式中不成立的是A ．11a b > B. 11a b a >- C ．||||a b > D.22a b >2．不等式(21)(31)0x x -+>的解集是A ．1|3x x ⎧<-⎨⎩或12x ⎫>⎬⎭B ．}2131|{<<-x xC ．}21|{>x xD ．}31|{->x x 3．若曲线4()f x x x =-在点P 处的切线平行于直线30x y -=，则点P 的坐标为A ．(1,3)B ．(1,3)-C ．(1,0)D ．(1,0)-4．若()1sin π3α-=，且ππ2α≤≤，则sin 2α的值为A ．429- B ．229-C ．229D ．429 5．为了得到函数πsin(2)6y x =-的图象,可以将函数πsin(2)6y x =+的图象 A ．向右平移π6个单位长度 B ．向右平移π3个单位长度 C ．向左平移π6个单位长度D ．向左平移π3个单位长度6．ABC ∆的内角A 、B 、C 的对边分别为a 、b 、c ，若4523A a b =︒==，，，则B 等于A ．30︒B ．60︒C ．30︒或150︒D ．60︒或120︒7．已知等差数列{}n a 的前n 项和为55,5,15n S a S ==,则数列11n n a a +⎧⎫⎨⎬⎩⎭的前100项和为A ．100101B ．99101C ．99100D ．1011008．已知空间几何体的三视图如图所示，则该几何体的体积是A. 34B. 38C ． 4D ．89．已知轴截面是正方形的圆柱的高与球的直径相等，则圆柱的全面积与球的表面积的比是A ．6∶5B ．5∶4C ．4∶3D ．3∶2左视图22俯视图210．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2c a =，则cos B =A ．14B ．34 C ．24 D ．2311．已知变量 x y ,满足约束条件23033010x y x y y -+≥⎧⎪-+≤⎨⎪-≤⎩，若目标函数z y ax =-仅．在点(3,0)-处取到最大值，则实数a 的取值范围为 A ．(3,5)B ．1(,)2 +∞C ．(1,2) -D ．1(,1)312．已知函数()ln af x x x =-，若2()f x x <在()1,+∞上恒成立，则a 的取值范围是A ．[)1,-+∞ B ．[)1,1- C ． 1,)-+∞( D ．(1,1)-二、填空题：本大题共4小题，每小题5分，满分20分．13．已知向量(2)m =a ，，(,2)m =b ，若//a b ，则实数m 等于___________． 14．等差数列}{n a 不是常数列，它的第2，3，6项顺次成等比数列，这个等比数列的公比是________．15．如图，在矩形ABCD 中，2,2AB BC ==，点E 为BC 的中点，点F 在边CD 上，若2AB AF ⋅=，则AE BF ⋅的值是 .16．若实数,x y 满足221x y xy ++=，则x y +的最大值是 ．三、解答题：本大题共6小题，满分70分． 17．（本小题满分10分）设向量,a b 满足1==a b 及327-=a b（Ⅰ）求向量,a b 的夹角的大小；（Ⅱ）求3+a b的值.18．（本小题满分12分）ABC ∆中，内角A 、B 、C 的对边分别为a 、b 、c ，已知a 、b 、c 成等比数列，3cos 4B =．（Ⅰ）求11tan tan A C +的值；（Ⅱ）设32BA BC ⋅=，求a c +的值.19．（本小题满分12分）（第15题图）已知数列{}n a 的前n 项和2=n S n ,*n ∈N .（Ⅰ）求数列{}n a 的通项公式；（Ⅱ）已知2n n nb a =⋅，求数列{}n b 的前n 项和记为n T ．20.（本题满分12分）本公司方案2022年在甲、乙两个电视台做总时间不超过300分钟的广告，广告总费用不超过9万元，甲、乙电视台的广告收费标准分别为500元/分钟和200元/分钟，规定甲、乙两个电视台为该公司所做的每分钟广告，能给公司事来的收益分别为0.3万元和0.2万元．问该公司如何安排在甲、乙两个电视台的广告时间，才能使公司的收益最大，最大收益是多少万元？21．(本小题满分12分)设数列{}n a 的前n 项和为,n S 已知24,111+==+n n a S a (*)n N ∈.（Ⅰ）设12n n nb a a +=-，证明数列{}n b 是等比数列；（Ⅱ）求数列{}n a 的通项公式．22．(本小题满分12分)设函数()ln ,R mf x x m x=+∈ （Ⅰ）当e m =（e 为自然对数的底数）时，求()f x 的微小值； （Ⅱ）若函数()()3xg x f x '=-存在唯一零点，求m 的取值范围．2021—2022学年第一学期期中考试 高三班级试验班(文科数学)试题参考答案一、选择题：本大题每小题5分，满分60分．二、填空题：本大题每小题5分；满分20分．13．2±. 14．3. 15． 16．．三、解答题：17．（本小题满分10分）设向量,a b 满足1==a b 及32-a b （Ⅰ）求向量,a b 的夹角的大小； （Ⅱ）求3+a b的值.解：（Ⅰ）设,a b 所成角为θ，由32-=a b2291247-⋅+=a ab b ，将1==a b 代入得：12⋅=a b ， ……………3分所以1||||cos cos 2θθ⋅===a b a b ， ……………4分又[0,π]θ∈，故π3θ=，即,a b 所成角的大小为π3． ……………6分（Ⅱ）由于22222|3|969||6||13+=+⋅+=+⋅+=a b a a b b a a b b ……………9分 所以3+=a b ……………10分18．（本小题满分12分）ABC ∆中，内角A 、B 、C 的对边分别为a 、b 、c ，已知a 、b 、c 成等比数列，3cos 4B =．（Ⅰ）求11tan tan A C +的值；（Ⅱ）设32BA BC ⋅=，求a c +的值.解：（Ⅰ）由3cos 4B =，0πB <<得sin B ==， ∵a 、b 、c 成等比数列，∴2b ac =，由正弦定理可得2sin sin sin a b cR A B C ===，∴2sin sin sin B A C =，于是11tan tan A C +cos cos sin sin A C A C =+sin cos cos sin sin sin C A C A A C +=2sin()sin A C B +=2sin 1sin sin B B B ===. ……………6分（Ⅱ）由.2,2,43cos ,23cos 232====⋅=⋅b ca B B ca BC BA 即可得由得由32BA BC ⋅=得3cos 2ca B =，而3cos 4B =，∴22b ac ==，由余弦定理，得2222cos b a c ac B =+-， ∴225a c +=，∴2()529a c ac +=+=， ∴3a c +=. ……………12分 19．（本小题满分12分）已知数列{}n a 的前n 项和2=n S n ,*n ∈N .（Ⅰ）求数列{}n a 的通项公式；（Ⅱ）已知2n n nb a =⋅，求数列{}n b 的前n 项和记为n T ．解：（Ⅰ）当1n =时，111a S ==；…………………………………………………………………2分当2n ≥时，()221121n n n a S S n n n -=-=--=-.…………………………………………4分21n a n ∴=-，*n N ∈ ………………………………………………………………………………6分()212nn b n ∴=-⋅，*n N ∈…………………………………………………………………………8分（Ⅱ）123n nT b b b b =++++即()123123252212nn T n =⋅+⋅+⋅+⋅⋅⋅+-⋅------------①① ⨯2得 2()2341123252212n n T n +=⋅+⋅+⋅+⋅⋅⋅+-⋅ ----------------②①-②：()12312222222212n n n T n +-=+⋅+⋅+⋅⋅⋅+⋅--()()123122222212n n n +=+++⋅⋅⋅+--()()114122221212n n n -+-=+---()6426n n =--,()4626nn T n ∴=-+. ……………………………………………………12分20．（本小题满分12分）本公司方案2022年在甲、乙两个电视台做总时间不超过300分钟的广告，广告总费用不超过9万元，甲、乙电视台的广告收费标准分别为500元/分钟和200元/分钟，规定甲、乙两个电视台为该公司所做的每分钟广告，能给公司事来的收益分别为0.3万元和0.2万元．问该公司如何安排在甲、乙两个电视台的广告时间，才能使公司的收益最大，最大收益是多少万元？解：设公司在甲电视台和乙电视台做广告的时间分别为x 分钟和y 分钟，总收益为z 元，由题意得3005002009000000.x y x y x y +≤⎧⎪+≤⎨⎪≥≥⎩，，，目标函数为30002000z x y =+．二元一次不等式组等价于3005290000.x y x y x y +≤⎧⎪+≤⎨⎪≥≥⎩，，，……………………………………………6分作出二元一次不等式组所表示的平面区域， 即可行域． 如图：作直线:300020000l x y +=，即320x y +=．平移直线l ，从图中可知，当直线l 过M 点时， 目标函数取得最大值．联立30052900.x y x y +=⎧⎨+=⎩，解得100200x y ==，． ∴点M 的坐标为(100200)，． …………………………………………10分max 30002000700000z x y ∴=+=（元）. ……………………………………11分答：该公司在甲电视台做100分钟广告，在乙电视台做200分钟广告，公司的收益最大，最大收益是70万元． ……………………………………………………12分 21．设数列{}n a 的前n 项和为,n S 已知24,111+==+n n a S a (*)n N ∈.（Ⅰ）设12n n nb a a +=-，证明数列{}n b 是等比数列；（Ⅱ）求数列{}n a 的通项公式．18．解：（Ⅰ）由11,a =及142n n S a +=+，有12142,a a a +=+21121325,23a a b a a =+=∴=-= ∵ 142n n S a +=+(*)n N ∈. ①∴142n n S a -=+(2,*)n n N ≥∈. ②y②－①得1144n n n a a a +-=-，∴ )2(2211-+-=-n n n n a a a a ，设12n n nb a a +=-，则 )2(21≥=-n b b n n ．且3232112121=+=-=-=a a S a a b ． ∴数列}{n b 是首项为3，公比为2的等比数列．……………………………………6分（Ⅱ）由（Ⅰ）可得123-⋅=n n b ，∴11232-+⋅=-n n n a a ，∴ 113422n n n n a a ++-=， 设2n n n a c =，则134n nc c +-=, ∴21211==a c ．∴ {n c}是以21为首项，公差为43的等差数列．∴ 4143-=n c n ，∴22(31)2nn n n a c n -==-⋅． ……………………………………12分22．（本小题满分12分）设函数()ln ,R mf x x m x=+∈ （Ⅰ）当m e =（e 为自然对数的底数）时，()f x 的微小值； （Ⅱ）若函数()()3xg x f x '=-存在唯一零点，求m 的范围． 解：（Ⅰ）由题设，当m e =时，()ln ef x x x=+，则()2x ef x x-'=，由()0f x '=，得x e =．∴当()0,x e ∈，()0f x '<，()f x 在()0,e 上单调递减，当(),x e ∈+∞，()0f x '>，()f x 在(),e +∞上单调递增， ∴当x e =时，()f x 取得微小值()ln 2ef e e e=+=， ∴()f x 的微小值为2. ……………………………………6分 （Ⅱ）由题设()()()21033x m xg x f x x x x '=-=-->， 令()0g x =，得()3103m x x x =-+>． 设()()3103x x x x ϕ=-+≥，则()()()2111x x x x ϕ'=-+=--+， 当()0,1x ∈时，()0x ϕ'>，()x ϕ在()0,1上单调递增；当()1,x ∈+∞时，()0x ϕ'<，()x ϕ在()1,+∞上单调递减．∴1x =是()x ϕ的唯一极值点，且是极大值点，因此1x =也是()x ϕ的最大值点． ∴()x ϕ的最大值为()213ϕ=． 又()00ϕ=，结合()y x ϕ=的图象（如图），可知当23m =时，函数()g x 有且只有一个零点； 当0m ≤时，函数()g x 有且只有一个零点．所以，当23m =或0m ≤时，函数()g x 有且只有一个零点.……………………………………12分。
广东省深圳市耀华实验学校2020年高三数学文联考试题含解析
广东省深圳市耀华实验学校2020年高三数学文联考试题含解析一、选择题：本大题共10小题，每小题5分，共50分。
在每小题给出的四个选项中，只有是一个符合题目要求的1. 设等比数列{}的公比q=2，前n项和为S。
，则的值为（）A． B． C．D．参考答案：A2. 若α∈（，π）且3cos2α=4sin（﹣α），则sin2α的值为（）A．B．﹣C．﹣D．参考答案：C【考点】二倍角的余弦；两角和与差的正弦函数．【专题】三角函数的求值．【分析】由条件化简可得 3（cosα+sinα）=2，平方可得1+sin2α=，从而解得sin2α的值．【解答】解：∵α∈（，π），且3cos2α=4sin（﹣α），∴3（cos2α﹣sin2α）=4（cosα﹣sinα），化简可得：3（cosα+sinα）=2，平方可得1+sin2α=，解得：sin2α=﹣，故答案为：C．【点评】本题主要考查两角和差的正弦公式、二倍角公式的应用，属于中档题．3. 若变量x,y满足约束条件，则的最大值为（）A.4B.3C.2D.1参考答案：B4. 在中，角的对边分别为，则“”是“是等腰三角形”的（A）充分不必要条件（B）必要不充分条件（C）充分必要条件（D）既不充分也不必要条件参考答案：A略5. 一条长为2的线段，它的三个视图分别是长为的三条线段，则的最大值为A． B． C． D．3参考答案：C构造一个长方体，让长为2的线段为体对角线，由题意知，即，又，所以，当且仅当时取等号，所以选C.6. 已知，，定义：，．给出下列命题：(1)对任意，都有；(2)若是复数的共轭复数，则恒成立；(3)若，则；(4)(理科) 对任意，结论恒成立，则其中真命题是[答]( )． (文科)对任意，结论恒成立，则其中真命题是[答]( )．A ．(1)(2)(3)(4)B ．(2)(3)(4)C ．(2)(4)D ．(2)(3)参考答案：C7.设函数f (x ) =为R 上的连续函数，则a 等于（ ）A ．2B ．1C ．0D ．－1 参考答案：答案：B8. 若函数在其定义域的一个子区间内存在最小值，则实数k 的取值范围是（ ）.A ．B ．C ．D ．参考答案：B9. 函数，,则 （ ） A ．为偶函数，且在上单调递减 B ．为偶函数，且在上单调递增 C ．为奇函数，且在上单调递增 D ．为奇函数，且在上单调递减参考答案：A10. 已知圆的方程，若抛物线过点A(0，－1)，B(0,1)且以圆的切线为准线，则抛物线的焦点轨迹方程是( )参考答案：C二、 填空题:本大题共7小题,每小题4分,共28分11. 已知随机变量，且P ，P ，则P()= ．参考答案：0.112. 在区间[0，π]上随机取一个数x ，使sinx≥成立的概率 ．参考答案：【考点】几何概型．【分析】由于在区间[0，π]上随机取一个数，故基本事件是无限的，而且是等可能的，属于几何概型，求出使sinx≥成立的区间，即可求得概率．【解答】解：本题考查几何概型，其测度为长度， ∵sinx≥，x ∈[0，π]， ∴x ∈[，]，∴在区间[0，π]上随机取一个数x ，使sinx≥成立的概率P==．故答案为：．13. 设，则=____________ .参考答案：14. 椭圆的焦点坐标为__， __________.参考答案：，15.为了解某团战士的体重情况，采用随机抽样的方法．将样本体重数据整理后，画出了如图所示的频率分布直方图．已知图中从左到右前三个小组频率之比为1：2：3，第二小组频数为12，则全团共抽取人数为_______．参考答案：48 【分析】先求出频率分布直方图左边三组的频率和，再求全团共抽取的人数. 【详解】由题得频率分布直方图左边三组的频率和为所以全团抽取的人数为：＝48.故答案为：48【点睛】本题主要考查频率分布直方图频率和频数的计算，意在考查学生对这些知识的理解掌握水平和分析推理能力. 16. 若直线是曲线斜率最小的切线，则直线与圆的位置关系为_________ .参考答案：略17. 某程序框图如图所示，该程序运行后输出的的值是 。
广东省深圳市耀华实验学校2020届高三数学上学期第一次月考试题 文
广东省深圳市耀华实验学校2020届高三数学上学期第一次月考试题文本试卷共22小题，满分150分，考试用时120分钟注意事项：1、答卷前，考生先检查试卷与答题卷是否整洁无缺损，并用黑色字迹的签字笔在答题卷指定位置填写自己的班级、姓名、学号和座号。
2、答案必须写在答题卷各题目指定区域内相应位置上。
一、选择题（每小题5分，共60分）(每小题只有唯一 一个正确选项) 1.ABC ∆中，A 、B 的对边分别是 a b 、，且A=60 6 4,a ,b ==o ，那么满足条件的ABC ∆( )A.有一个解B.有两个解C.无解D.不能确定 2.（1）已知向量a r (1,2)=，(2,3)b =-r ，若向量c r 满足()c a +r r ∥b r ，()c a b ⊥+r r r ，则c r =（ ）A.77(,)93 B.77(,)39-- C.77(,)39 D.77(,)93-- 3.在ABC △中，AB c =u u u r r ，AC b =u u u r r ．若点D 满足2BD DC =u u u r u u u r ，则AD u u u r =（ ）A ．2133b c +r rB ．5233c b -rr C ．2133b c -r r D ．1233b c +rr 4.将函数sin(2)y x ϕ=+的图象沿x 轴向左平移8π个单位后,得到一个偶函数的图象,则ϕ的一个可能取值为( ) A.34π B.4π C.0 D.4π- 5. 已知2sin 23α=，则2cos ()4πα+=（ ） A ． B ． C ． D ．6．函数242)(x x x f -=的单调增区间是( )A.(]2,∞-B.[]2,0C.[]4,2D.[)+∞,27.设f (x )为定义在R 上的奇函数，且满足f （2+x ）=- f （x ），f (1)＝1，则f (－1)＋f (8)等于( )A ．－2B ．－1C ．0D ．18.设0.50.7a -=，0.5log 0.7b = ，0.7log 5=c ，则( )A. a b c >>B. b a c >>C. c a b >>D. c b a >>9.函数ln 1()1x f x x -=-的图象大致为( )10.设f(x)，g(x)分别是定义在R 上的奇函数和偶函数，)('),('x g x f 为导函数，当0x <时，()()()()0f x g x f x g x ''⋅+⋅>且(3)0g -=，则不等式()()0f x g x ⋅<的解集是( )A ．(－3,0)∪(3,＋∞)B ．(－3,0)∪(0, 3)C ．(－∞,－3)∪(3,＋∞) D.(－∞,－3)∪(0,3)11.函数 |log |)(3x x f =在区间[]b a ,上的值域是[]1,0，则b-a 的最小值为( )A ．2B ．32C ．31D ．112. 已知函数()ln (2)24(0)f x x a x a a =+--+>，若有且只有两个整数12,x x 使得1()0f x >，且2()0f x >，则实数a 的取值范围为（ ）A. (ln 3,2)B. (]0,2ln3-C. (0,2ln 3)-D. [)2ln3,2-二、填空题（每小题5分，共20分）13.已知向量a r ，b r 的夹角为120︒，||1||3a b ==r r ，则|5|a b -=r r ．14.若角α的顶点在原点，始边与x 轴非负半轴重合，终边为射线430(0)x y x +=≥，则2sin α+cos (cos tan )ααα+的值为 .15.在△ABC 中，A =60°,1b =,3S =,则sin sin sin a b c A B C++=++ . 16．函数π()3sin(2)3f x x =-的图象为C ，如下结论中正确的是.（写出所有正确结论的编号．．） ①图象C 关于直线11π12x =对称；②图象C 关于点对称；③函数()f x 在区间内是增函数；④由3sin 2y x =的图角向右平移个单位长度可以得到图象C ． 三、简答题（17题10分，18、19、20、21、22每题12分）(注意：在试题卷上作答无效．．．．．．．．．) 17.（本小题满分10分）设p ：实数x 满足x 2－5ax ＋4a 2<0(其中a>0)，q ：实数x 满足2<x≤5.(1)若a ＝1，且p ∧q 为真，求实数x 的取值范围；(2)若q ⌝是p ⌝的必要不充分条件，求实数a 的取值范围．18.（本小题满分12分）设函数f （x ）=2x 2+bx+c ，已知不等式()0<f x 的解集是（1,5）. （1）求f （x ）的解析式；（2）若对于任意x ∈ []1,3，不等式f （x ）≤2+t 有解，求实数t 的取值范围。
2020届深圳市耀华实验学校初中部高三生物上学期期中考试试卷及参考答案
2020届深圳市耀华实验学校初中部高三生物上学期期中考试试卷及参考答案一、选择题：本题共15小题，每小题2分，共30分。
每小题只有一个选项符合题目要求。
1.有氧呼吸全过程的物质变化可分为三个阶段：①C6Hl206→丙酮酸+[H]；②丙酮酸+H2O→CO2+[H]；③[H]+O2→H2O，下列与此相关的叙述中正确的是A. 有氧呼吸与无氧呼吸都能发生①②两个阶段B. 若用18O标记O2，一段时间后，在最终的产物中只有H2O中能找到18OC. 第③阶段反应所需要的[H]都来自于丙酮酸D. 叶肉细胞中第③阶段的反应发生在生物膜上2.有关人体内蛋白质的功能，下列叙述错误的是A. 有些蛋白质具有运输作用B. 有些蛋白质具有催化作用C. 许多蛋白质是构成细胞结构的重要物质D. 有些蛋白质是细胞代谢的主要能源物质3.下列哪组试剂在使用过程中，必须经过加热（）A.斐林试剂鉴定可溶性还原糖的过程中B.苏丹Ⅲ染液在鉴定动物组织中的脂肪时C.双缩脲试剂鉴定蛋白质时D.碘化钾溶液鉴定淀粉时4.下列关于酶的叙述中正确的一项是①酶是活细胞产生的；②酶都有消化功能；③酶的本质是蛋白质，蛋白质都是酶；④酶能够降低化学反应活化能，具有专一性、高效性；⑤酶促反应与外界条件无关；⑥淀粉酶能促进淀粉水解；⑦酶只有在生物体内才起催化作用A. ①②③B. ①②④⑤C. ①②④⑥D. ①④⑥5.下列有关植物激素描述，错误的是A.植物激素必须与受体结合后才能发挥作用B.植物激素具有调节作用，但不直接参与细胞的代谢C.植物激素都是由特定的组织细胞产生的微量有机物D.外界因素会影响激素的合成，进而调节基因组的表达6.如图为激素的分泌调节示意图，其中a、b和c表示人体内三种内分泌腺，①、②和③表示三种不同的激素。
下列叙述错误的是A. 由图分析，激素分泌存在分级调节和反馈调节B. 若图中③为性激素，则激素②是促性腺激素C. 人受寒冷刺激时，c的体温调节中枢兴奋，激素③含量增加D. 当饮食过咸时，c还能释放大量抗利尿激素.以维持机体水平衡7.马尔和沃伦因对引起胃溃疡的幽门螺杆菌的开创性研究成果，获得了2005年诺贝尔生理学或医学奖。
2020-2021学年深圳市耀华实验学校初中部高三英语上学期期中试题及答案解析
2020-2021学年深圳市耀华实验学校初中部高三英语上学期期中试题及答案解析第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项AFour Truly Unique Canadian Camping ExperiencesMount Robson Provincial Park,British ColumbiaNamed after the highest mountain in the Canadian Rockies, this park gives you breathtaking views of mountain landscapes along with lakes, waterfalls, canyons, and caves. The Berg Lake campground is located right at the northern base of the 3, 954-meter peak (山巅), which is about a day's hike in.Fundy National Park,New BrunswickIf you've grown tired of the tent or RV, this park is one of the few national parks offering yurt (蒙古包) rentals. Make sure you visit theBay of Fundywhere the world's highest tides make for some great surfing. You also can't miss the amazing Acadian forest waterfall. If you're looking for even more entertainment, the park also hostsmusic and cultural festivals each summer and has its own golf course.KluaneNational Parkand ReserveYukonFrom May to September, theKathleenLakecampground sees visitors come from far and wide to camp, hike and fish. Mountaineering is especially popular as Kluane is home to 17 of Canada's 20 highest peaks. Flightseeing over the park's glaciers and rafting (漂流) the winding Alsek River will also keep you out enjoying the wilderness.Prince Edward Island National Park,Prince Edward IslandIf you're looking for a family-friendly park, this one is wonderful. Between the seven beaches and more than 50 kilometersof hiking and cycling trails, you'll certainly be kept busy. Literature lovers, you can see what inspired L.M. Montgomery'sAnne of Green Gables at the nearby Green Gables Heritage Place and even explore the original house.1. Where is the park offering yurt rentals located?A. InBritish Columbia.B. InNew Brunswick.C. InYukon.D. InPrince Edward Island.2. What can you do inKluaneNational Parkand Reserve?A. Climb the highest mountain inCanada.B. Experience the highest tides.C. Raft the windingAlsekRiver.D. Attend music and cultural festivals.3. Which will you choose if you are a fan of Anne of Green Gables?A.Mount RobsonProvincialPark.B. Fundy National Park.C.KluaneNational Parkand Reserve.D.Prince Edward IslandNational Park.BLife in the Internet age is lonely—or is it? That’s what experts in human interaction are debating after a new Stanford University survey has been published.According to the study, the more time people spend online, the less they can spare for real-life relationships with family and friends. The researchers asked 113 people about the Web’s influence on daily activities. 36％of those people are online for more than five hours a week.” As Internet use becomes more widespread, it will have an increasingly isolating (孤立的) effect on society,” says Robert Kraut, one of the researchers.Scholars and Web lovers criticized the study for stretching its data to make the “isolating” point. While 13％of regular Web users admitted the loss of time with loved ones, 60％reported watching less TV. The survey also shows that E-mail is the most popular online activity. If some of webheads (网虫)spend what was once passive TV time keeping company with friends via E-mails, “that’s a move toward greater connectedness,” says Paul Resnick, a professor at the University of Michigan.Thisisn’t the first claim that the Web should be criticized. A 1998 report monitored 73 Pittsburgh-area families’ Net use for a year. People who used the Internet more “talked less to family members and reported being lonelier and more depressed.” says Robert Kraut.“It’s true that there have been big declines in social connectedness over the past decades, but those declines began before the Internet was invented,” says Thomas Putnam.As Amitay Etzioni says, the Internet gives us a different kind of social life—not better or worse than before, but just different.4. Who claimed that the Web had negative influence?A. Paul Resnick.B. Robert Kraut.C. Thomas Putnam.D. Amitay Etzioni.5. The underlined word “This” in Para.4 refers to .A. the opinion expressed in Bowling AloneB. the survey made by the University of MichiganC. the conclusion in a report written in 1998D. the study conducted by Stanford University6. From the passage we learn that .A. watching TV used to take time away from staying onlineB. the Web was blamed more than once for causing an isolating effectC. 36％ofweb users spend more than five hours a week onlineD. the Web has the same influence as telephones and televisions7. The passage mainly discusses .A. how we can make a better use of the InternetB. how declines in social connectedness appearC. whether the Internet causes an isolating effectD. what a different life the Internet brings to usCMost teenagers are still trying to find their passion and purposes in life. However, not Gitanjali Rao. The 15-year-old girl has been coming up with innovative solutions to worldwide problems since she was ten. It is, therefore, not surprising that the teenager has won the honor of “America's Top Young Scientist”.In the third grade, Rao was inspired to build a device after witnessing the shocking story unfold in Flint, Michigan, where cost-cutting measures led to the use of a polluted river as the city's primary water supply and incredibly high levels of lead made their way into people's drinking water.After two months' research, Rao designed a small and portable device that used sensors to instantly detect lead in water. Called Tethys, after the Greek Goddess(女神) of freshwater, it attaches to a cellphone and informs the residents via an app if their drinking water contains lead. The design earned her the 3M Young Scientist Challenge in 2017. She is currently working with scientists and medical professionals to test Tethys' potential and hopes the device will be ready for commercial use by 2022.Later, Rao took on another social issue-drug addiction. Her app, called Epione, which won the Health Pillar Prize at the TCS Ignite Innovation Student Challenge in May 2019, is designed to catch drug addiction in young adults before it's too late.More recently, the teenager has developed an app named Kindly, which usesartificial intelligence technology to detect possible signs of cyberbullying(网上欺凌). When users type in a word or phrase, Kindly is able to pick it up if it's bullying, and then it gives the option to edit it or send it the way it is. It gives them the chance to rethink what they are saying so that they know what to do next time.All kinds of awesome, Gitanjali Rao has been selected from 5,000 equally impressive nominees(被提名人) for TIME Magazine's first-ever “Kid of the Year”.8. What gave Rao the idea of inventing the device Tethys?A. The incident of lead pollution.B. The issue with drug addiction.C. The shortage of water supplies.D. The high cost of purifying water.9. What is Rao expecting of Tethys?A. It'll remove metal from water.B. It'll make it to market soon.C. It'll win her a higher prize.D. It'll be fitted to cellphones.10. What will Kindly allow users to do?A. Receive pre-warning signals of threat.B. Input words into a computer automatically.C. Choose from secure social networking sites.D. Weigh their words before posting them online.11. Which of the following can best describe Gitanjali Rao as a young scientist?A. Ambitious and humble.B. Optimistic and adventurous.C. Talkative and outstanding.D. Creative and productive.DJIANLI, Hubei Province, June 2 (Xinhua) — A cruise ship carrying more than 450 people sank in the Yangtze River overnight, which could be China’s worst sinking disaster in decades. As of 6 p.m. Tuesday, 14 peoplehad been rescued from the capsized vessel, with five others confirmed dead. The rest are still missing, although rescuers said there could be more survivors. Strong winds and heavy rain are hampering rescue efforts.The Eastern Star sank in only 15 meters of water “within one or two minutes” of being caught in freak weather in Jianli, according to the ship’s captain and chief engineer who survived the incident. The ship left the eastern Chinese city ofNanjingon May 28 bound forChongqingMunicipality.The ship was carrying 403 passengers, five tour guides, and 46 crew, rather than the previously reported 47. Most passengers were tourists fromShanghaiand its neighboringprovinceofJiangsu, aged between 3 and 83, withmost in their 60s and 70s.The 76.5-meter-long and 11-meter-wide vessel has been in service for nearly 20 years and can carry up to 534 people. It is owned by Chongqing Dongfang Shipping. Waterway officials said they have no record of the company being involved in any previous sinking incidents.According to weather forecast, most of the Yangtze basin will be subject to downpours over the next 10 days, with heavy rain expected in the area where the search is underway.Police, waterway authorities and fire departments have sent more than 150 boats and over 4,000 personnel to the scene. The Chinese Navy has sent diving forces to search for the missing. The team is composed of soldiers from the navy’s fleets in the North Sea, East China Sea, andSouth China Sea, as well as students of the Naval University of Engineering. In addition, five helicopters were dispatched fromBeijingandHubei’s provincial capital ofWuhanon Tuesday morning, along with an IL-76 transport plane.12. We can infer from the text that ________.A. the incident was very suddenB. the weather benefited the rescueC. the ship had bad safety recordsD. the ship’s captain was drowned13. Which of the following statements is TRUE about the Eastern Star?A. It was overloaded.B. It’s been launched recently.C. It had 454 people on board.D. Its owner met similar incidents.14. What’s the main idea of the last paragraph?A. How people came to the rescue.B. Why the rescue was quite difficult.C. What the rescue force consisted of.D. How the rescue operation went on.15. The author’s purpose of writing the text is most likely to ________.A. informB. explainC. describeD. entertain第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。
2020届深圳市耀华实验学校初中部高三语文上学期期末考试试卷及答案
2020届深圳市耀华实验学校初中部高三语文上学期期末考试试卷及答案一、现代文阅读（36分）(一)现代文阅读I(9分)阅读下面的文字，完成下面小题。
材料一：共享经济有助于深化我国供给侧结构性改革。
在过去产业模式更新滞后的阶段，经济增速下降，出现了供给失衡的情况：一方面市场提供的产品不符合人们的需求；另一方面部分行业存在产能过剩的问题，库存得不到及时有效的解决。
这一状况的解决即供给侧结构性改革。
供给侧结构性改革的目标是优化产能，注重需求方的需求，提升合理的供给能力。
共享经济的出现带动了资源的再分配，使得部分资源得以重新组合，衍生出新的商业模式。
其参与成本低，平台参与度广，发展迅速，对传统商业市场造成了冲击，削弱了传统商业模式的竞争力。
以滴滴快车与出租车相比为例，滴滴快车的司机稅收政策不明确，收费低，接单多。
而传统的出租车因为投入多、运营成本高、打车费用高而逐渐失去市场占有力。
这自然会引起传统出租车司机和出租车公司的不满，出租车司机抵制“专车”司机的情况屡见不鲜。
共享经济是近年来出现的新的经济模式，我国还未对共享经济颁布明确的责任追究、稅收监管等相关的法律法规。
目前，共享经济大都是通过网络手段来进行认证，资质认证门槛较低，交易平台很难提供足够的安全保障，一旦出现问题，现有的法律法规很难厘清真正的责任人。
（摘编自《共享经济的发展现状及治理对策》）材料二：（摘编自《2018—2019中国共享经济行业全景研究报告》）材料三：在行业成熟度比较高的共享模式中，一些现象偏离了“通过激活社会存量资源来创新经济发展”的初衷。
名曰共享经济，其实是资本市场的包装,往往多于盈利模式的创新；个性化服务的提升，也可能多于社会公共成本的节省。
比如，最初的网约车，说好了是利用空闲和家车和空余座位减轻交通压力，结果却催生了不少专职网约车司机。
到底是提升了资源利用率，还是增加了通行压力，这笔账并不那么好算。
如今的共享汽车，也是走了类似的模式，更多是通过增量服务释放了潜在需求。
2020届深圳市耀华实验学校初中部高三英语上学期期中试题及答案解析
2020届深圳市耀华实验学校初中部高三英语上学期期中试题及答案解析第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项ATry one of these amazing destinations on your next vacation.MallorcaOn the popular Spanish island of Mallorca, farmhouse inns focus more on providing isolation and quietness than offering hands-on farming experiences. With millions of visitors staying on the beaches of Mallorca and the other Balearic Islands each summer, a little bit of isolation is a good thing for aloneness-seeking travelers. Mainly located in the hills of inland Mallorca, these inns range from rustic century-old farmhouses to luxury(奢侈的) villas with spas and swimming pools.HawaiiPeople who don't want to dig out their passport but still want their farm adventure can head to the island of Hawaii. The 50th state talks much about the well-developed farm tourism industry that can hold people with different interests. Agritourism choices range from visiting coffee plantations(种植园) in the Big Island's Kona region to exploring the plantations on Maui to staying on farms on the easily reachable island of Oahu. CaliforniaCalifornia is one ofthe best places in the U. S. to enjoy a farm-stay, thanks to the diversity of crops and farms. Small family farms and large farms offer a more hands-on approach to agritourism. Many of them teach small-scale farming techniques and even offer strategies for organic growing. The University of California system, one of the largest state-run higher education systems in the U.S., has a small-farm program that helps growers create agritourism businesses.Philippine IslandsWith diverse conditions on different islands, the Philippine Islands are ideal places for visiting multiple agritourism sites or focusing on one product. Tourists can visit a huge pineapple plantation for a taste of large-scale agriculture, or they could focus on smaller operations such as bee farms, and even small plantations that specialize in growing tropical produce such as dragon fruit.1. What kind of people will choose to go to Mallorca?A. Those who prefer peace of mind.B. Those who like lying on the beach.C. Those who enjoy the luxury of tourism.D. Those who want to experience farming.2. What can people do on the Philippine Islands?A. Live in farmhouses.B. Visit plantations.C. Learn farming techniques.D Take part in a farm program.3. What are the four places in the text famous for?A. Locations.B. Environments.C. Local products.D. Tourism features.BWho is a genius? This question has greatly interested humankind for centuries.Let's state clearly: Einstein was a genius. His face is almost the international symbol for genius. But we want to go beyond one man and explore the nature of genius itself. Why is it that some people are so much more intelligent or creative than the rest of us? And who are they?In the sciences and arts, those praised as geniuses were most often white men, of European origin. Perhaps this is not a surprise. It's said that history is written by the victors, and those victors set the standards for admission to the genius club. When contributions were made by geniuses outside the club—women, or people of a different color1 or belief—they were unacknowledged and rejected by others.A study recently published bySciencefound that as young as age six, girls are less likely than boys to say that members of their gender(性别)are “really, really smart.” Even worse, the study found thatgirls act on that belief: Around age six they start to avoid activities said to be for children who are “really, really smart.” Can our planet afford to have any great thinkers become discouraged and give up? It doesn't take a genius to know the answer: ly not.Here's the good news. In a wired world with constant global communication, we're all positioned to see flashes of genius wherever they appear. And the more we look, the more we will see that social factors(因素)likegender, race, and class do not determine the appearance of genius. As a writer says, future geniuses come from those with “intelligence, creativity, perseverance(毅力), and simple good fortune, who are able to change the world.”4. What does the author think of victors' standards for joining the genius club?A. They're unfair.B. They're conservative.C. They're objective.D. They're strict.5. What can we infer about girls from the study inScience?A. They think themselves smart.B. They look up to great thinkers.C. They see gender differences earlier than boys.D. They are likely to be influenced by social beliefs6. Why are more geniuses known to the public?A. Improved global communication.B. Less discrimination against women.C. Acceptance of victors' concepts.D. Changes in people's social positions.7. What is the best title for the text?A. Geniuses Think AlikeB. Genius Takes Many FormsC. Genius and IntelligenceD. Genius and LuckCThe AI research arm of Alibaba created a machine learning model that received a higher score on the Stanford Question Answering Dataset than humans. The database consists of more than 100,000 questions to test reading comprehension.In early January this year the Alibaba AI software machine scored 82.44 on the test while humans scored 82.304. Besides, computers and AI have already defeated humans, for example in games such as chess. However, it seemed that language skills were superior in humans as machines find languages hard to master.A large number of call center employees, often in developing countries, may be out of work soon if the AI robots are cheaper and as effective as human labor. Soon when you phone a company for information the conversation will go like this: “ We are sorry but all our robots are busy right now. We value your call. Please stay on the line until a robot is free to serve you. There are just 12 callers ahead of you.” A robot will serve you somepopular tunes while you wait.Si Luo, who is a chief scientist of natural language processing at Alibaba’s AI research group noted that questions such as “What causes rain?” can now be answered with a high degree of accuracy by robots. Si Luo said, “ We believe the foundational technology can be gradually applied to a lot of applications such as customer service, museum tutorials, and online responses to inquiries from patients, freeing human efforts in a new way.”Si Luo’s team is working closely with Ali Xiaomi, a mobile customer service chatbot. Ali Xiaomi can be customized to be used on Alibaba’s platforms such as Taobao and Tmall. The new AI robots could answer consumers’ questions as they did the Stanford questions. The robots would look for the answers from prepared information. However, there are limits to what the system will be able to do. If questions do not have clear-cut answers, or the questions asked are too unclear or ungrammatical, the robot may not be able to deal with them.8. What can we learn about the Alibaba AI software machine?A. It has been tested in some areas.B. It has become popular since January.C. It has offered a special learning style.D. It has made people interested in reading.9. What does the example in paragraph 3 show about the AI robots?A. They should have better language skills.B. They may replace humans in some fields.C. They need to be customized to serve customers.D. They will be widely used in developing countries.10. How does Si Luo feel about the foundational technology?A. Doubtful.B. Worried.C. Curious.D. Confident.11. What can we infer from the lastparagraph about Ali Xiaomi?A. It needs to improve in some ways.B. It is connected with another system.C. It is a platform to show good service.D. It can answer any questions accordingly.DMove over, helicopter parents. “Snowplow (扫雪机) parents” are the newest reflection of an intensive (强化的) parenting style that can include parents booking their adult children haircuts, texting their college kids to wake them up so they don’t sleep through a test, and even calling their kids’ employers.Helicopter parenting the practice of wandering anxiously near one’s children, monitoring their every activity, is so 20th century. Some rich mothers and fathers now are more like snowplows: machines moving ahead, clearing any difficulties in their children’s path to success, so they don’t have to suffer failure, frustration (挫折) or loseopportunities.It starts early, when parents get on wait lists for excellent preschools before their babies are born and try to make sure their kids never do anything that may frustrate them. It gets more intense when school starts: running forgotten homework to school or calling a coach to request that their children make the team.Rich parents may have more time and money to devote to making sure their children don’t ever meet with failure, but it’s not only rich parents practicing snowplow parenting. This intensive parenting has become the most welcome way to raise children, regardless of income, education, or race.Yes, it’s a parent’s job to support the children, and to use their adult wisdom to prepare for the future when their children aren’t mature enough to do so. That’s why parents hide certain toys from babies to avoid getting angry or take away a teenager’s car keys until he finishes his college applications.But snowplow parents can take it too far, some experts say. If children have never faced a difficulty, what happens when they get into the real world?“Solving problems, taking risks and overcoming frustration are key life skills,” many child development experts say, “and if parents don’t let their children experience failure, the children don’t acquire them.”12. What do we know about snowplow parenting?A. It appeared before helicopter parenting.B. It costs parents less than helicopter parenting.C. It was a typical phenomenon of the 20th century.D. It provides more than enough services for children.13. What is mainly discussed about snowplow parenting in Paragraph 4?A. Its cost.B. Its benefits.C. Its popularity.D. Its ending.14. Why does the author mention parents’ taking away car keys?A. To show teenagers are no better than babies.B. To advise teenagers not to treat their cars as toys.C. To advise parents not to buy cars for their teenagers.D. To show it’s appropriate to help children when necessary.15. What’s the possible result of snowplow parenting according to the experts?A. Children lacking problem-solving ability in reality.B. Children mastering more key life skills than parents.C. Children gaining great success in every aspect of life.D. Children meeting no problems or frustration after growing up.第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。
2020年深圳市耀华实验学校初中部高三英语上学期期中试卷及答案解析
2020年深圳市耀华实验学校初中部高三英语上学期期中试卷及答案解析第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项APlan Your Visit to the British MuseumWe've made a few changes to ensure you can safely enjoy your visit:How to book tickets·Tickets for the permanent collection can only be hooked online in advance.·To book tickets for exhibitions, visit our exhibition pages. If you want to guarantee your visit to the permanent collection as well as the exhibition on your visit, you will need to book a separate ticket.·We are limiting numbers of people in the museum to ensure there is room for you to safely enjoy your visit. Everyone, including members and volunteers, will therefore need to book a free, timed ticket in advance.Important information about your ticket booking·You can book up to six tickets for people who live in the same family.·We will email yourticket to you, and you will need to show it either printed out or on your device (设备) when you arrive.·Please arrive at the time stated on your ticket-we cannot guarantee admission before or after it.Following the routeWe have created a new one-way route through the museum which will allow you to safely explore world cultures from the Mediterranean to the Middle East and from the Americas to Africa.·View a map of the route (Open in a new window).·Our audio guides (音频指南) are not available. However, youcan pay to download the audio introductions from iTunes (Open in a new window) or Google Play (Open in a new window) to each of the galleries and listen on your own device. Please remember to bring along your own headphones.1.Why does the museum offer timed tickets?A.To earn more money.B.To hire more volunteers.C.To save room for collections.D.To control the number of visitors.2.How can a visitor learn about the new route in advance?A.View an online map.B.Buy a new headphone.C.Buy audio guides from the museum.D.Download video introductions from iTunes.3.Where can you probably find the text?A.In a newspaper.B.In a magazine.C.On a website.D.In a report.BMany Americans experience surprise (or disappointment) when they wake up on Christmas Day. They might be surprised or disappointed by a family member’s actions. They might be happy or unhappy about a Christmas gift. Imagine a child expects to get an Xbox or PlayStation for Christmas. On Christmas morning, they quickly open their gift. Inside is an English grammar book. They might feel disappointed. The Everyday Grammar team would prefer the new English grammar book. But if you are like most young people, you would probably rather have a new video game.Today, we are going to explore those feelings-feelings of surprise and disappointment. In other words, we are going to explore how speakers show that reality was better or worse than their expectations.Many languages use words to express expectation. Speakers also use words to express how events are not happening as expected. This idea is known as “counter expectation”.Do not worry about the term. Just remember that it means that speakers use words to show that reality is countering their expectations.English has many words that serve this purpose. Three of the most common are the words “even”, “still” and “actually”. You will often hear them in informal, everyday speech. Speakers use these words to show disappointment. The pitch of their voice tells you what they mean. Let’s study examples of each word.Speakers often use the word "even” to show disappointment or surprise. Imagine a young child that expects a phone call from a family member-perhaps an uncle or grandparent. The phone call never comes. The child might say the following: “What’s wrong with him? He didn’t even call me on Christmas day.” Americans sometimes use “still” for showing how reality does not quite meet their expectations: “You’re still here? It’s over! Go home. Go!” Another common word that shows surprise or disappointment is “actually”: “I can’t believe it! Uncle Bob actually stole her Christmas gift.”4. What might most young Americans prefer as a Christmas gift according to paragraph 1?A. A newly made video game.B. An English grammar book.C. A new designed school bag.D. A unique jacket from their parents.5. What does the underlined phrase “counter expectation” in paragraph 3 mean?A. Expression of disappointment.B. Something expected to happen.C. The same with one’s expectation.D. A result against what is expected.6. What do the three words “even”, “still” and “actually” have in common?A. They are easy to understand.B. They express disappointment.C. They show delighted feelings.D. They are used most at Christmas.7. What’s the last paragraph mainly about?A. Expectations from loved ones.B. Different uses of the three words.C. Examples of the use of the three words.D. Emotions of disappointment and surprise.CShe is one of mankind’s oldest ancestors and is more than three million years old. New analysis of the arm bones of Lucy, an early hominid, suggests she was a tree climber. Lucy’s remains were uncovered in Ethiopia in the 1970s, with the 3.18 million-year-old skeleton(骨骼)being the most complete of any upright, walking human ancestor. Since she was discovered, researchers have debated whether she spent her life in the trees or spent time walking on the plains as well.The new evidence from scans of her arm bones proves she spent time climbing and used her arms to pull herself up. The scans were compared with cross sections of humans and chimpanzees, which spend a mixture of time in trees and walking on all fours on the ground. They found that the arm bones were more heavily built, similar to those of chimps, while her lower limbs(下肢)would have meant she walked less efficiently than modern humans. Professor John Kappelman, atUniversityofTexas, believes the advantage of his study was that it focused on characteristics that reflect actual behavior during life, suggesting that evenwhen Lucy walked upright, she may have done so less efficiently than modern humans, limiting her ability to walk long distances on the ground.Previous studies suggested that Lucy was just 4 feet tall and weighed just 65 pounds. Combining the new data paints a picture of an ancestor who may have spent a great amount of her time in trees. It also expands on evidence from earlier this year which claimed that Lucy may have died from a fall, most likely from a tree. The evidence suggests Lucy may have spent time on the ground, returning to the safety of the trees for food and to sleep, to avoid her enemies.8. What did the researchers argue about after Lucy was discovered?A. Where she lived.B. How long she lived.C. What she ate.D. How she worked.9. How could people tell Lucy spent time climbing?A. By her walking style.B. By her heavily built arm bones.C. By her strong lower limbs.D. By her large cross sections.10. When Lucy walked, she may________.A. have walked with bigger stepsB. have walked at a faster speedC. have walked more efficiently than usD. have walked a shorter distance than us11. What is the main idea of the last paragraph?A. Guesses about Lucy’s characteristics.B. Some evidence of Lucy’s health.C. The safety of Lucy.D. The ancestor of Lucy.DIf there is no difference in general intelligence between boys and girls, what can explain girls’ poor performance in science and math?It hasbeen suggested that girls do not take math courses, not because they are difficult, but for social reasons. Girls do not want to be in open competition with boys because they are afraid to appear less feminine (女性的) and attractive (有魅力的).However, there are still more high-achieving boys than girls when taking math exams. This difference appears to be worldwide. Biological explanations have been offered for this, but there are other explanations too.Perhaps the difference which comes out during the teenage years has its roots in much earlier experiences. From their first days in kindergarten, boys are encouraged to work on their own and to complete tasks. Facts show that outstanding mathematicians and scientists have not had teachers who gave answers.Besides, there can be little doubt that teachers of math and science expect their boy students to do better at these subjects than their girl students. They even appear to encourage the difference between boys and girls. They spend more time with the boy students, giving them more time to answer questions and working harder to get correct answers from them. They are more likely to call on boys for answers and to allow them to take the lead in classroom discussion. They also praise boys more frequently. All of this seems to encourage boys to work harder in science and math and to give them confidence that they are able to succeed.Such a way of teaching is not likely to encourage girls to take many math and science courses, nor is it likely to support girls who do. When it comes to these subjects it seems certain that school widens the differencebetween boys and girls.12. Why does the author raise a question in paragraph 1?A. To find differences between boys and girls.B. To explain the poor performance of girls.C. To ask readers a question.D. To introduce the topic.13. The text mainly discusses ________ reasons for the difference between boys and girls in scientific achievements.A. biologicalB. personalC. socialD. historical14. What does the text say about great mathematicians?A. Their teachers did not offer answers to them.B. They started learning math at an earlier age.C. They showed mathematical abilities in their teenage years.D. Their success resulted from their strong interest in math.15. The author would probably agree that ________.A. boys and girls learn in the same wayB. boys and girls are equal in general intelligenceC. girls are more confident in themselves than beforeD. girls should take fewer science courses than boys第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。
广东省深圳市耀华实验学校高三理综上学期期中试题(实验班)
1.本试卷分为第 I 卷（选择题） 126 分和第 II 卷（非选择题） 174 分，共 300 分，考试时间150分钟。
2. 可能用到的元素相对原子质量：H 1 C 12 N 14 O 16Cl 35.5Cu 64 Ag 108 Fe 56 Sn 119第 I 卷（选择题）一．选择题（共13 小题，每题 6 分，共 78 分。
每题中给出的四个选项中，只有一个选项切合题意，）1．以下对于生物学实验的表达，正确的选项是()A．在苹果匀浆中加入斐林试剂后试管内液体体现无色, 加热后变为砖红色B．盐酸办理口腔上皮细胞有益于健那绿对线粒体染色C．用同位素标志和差速离心的方法沉降DNA能用来研究DNA复制的方式D．“复原糖的判定”实验与“察看DNA与 RNA在细胞中的散布”实验中，都有水浴加热过程，且温度相同。
2．有关细胞构造与功能的表达，正确的选项是()A．线粒体与叶绿体都由双层膜构成，内外膜化学成分相像且含量相同B．核糖体是独一合成蛋白质的场所，叶绿体是独一含有色素的细胞器C．高尔基体在动物细胞与植物细胞中功能不一样，合成或分泌的物质不一样D．线粒体、中心体和核糖体在高等植物细胞有丝分裂过程中起重要作用3．果蝇的四对相对性状中红眼(E) 对白眼 (e) 、灰身 (B) 对黑身 (b) 、长翅 (V) 对残翅 (v) 、细眼(R) 对粗眼 (r) 为显性。
以下图是雄果蝇G的四平等位基因在染色体上的散布( 减数分裂时不发生交错交换）。
以下表达正确的选项是（）A. 雄果蝇 G经过减数分裂能产生8 种精子B. 果蝇这四对相对性状的遗传按照基因的自由组合定律C. 雄果蝇 G与红眼雌果蝇杂交，子代雌雄果蝇均为红眼D. 雄果蝇 G与黑身残翅雌果蝇杂交，子代中黑身残翅果蝇占1/164. 以下图为氨基酸和N a+出入肾小管上皮细胞的表示图。
以下选项中不正确的选项是( )A．管腔中Na+经过辅助扩散进入上皮细胞B．管腔中氨基酸经过辅助扩散进入上皮细胞C．上皮细胞中氨基酸经过被动运输进入组织液D．上皮细胞中Na+经过主动运输进入组织液5. 以下有关生物体中化合物的正确表达是( )A．腺苷是构成ATP、 RNA和 DNA的基本成分单位B．抗体、受体、限制性内切酶都是拥有辨别作用的物质C．蛋白质是细胞的主要能源物质，而淀粉、脂肪是贮能物质D．构成酶的单体是氨基酸或脱氧核糖核苷酸6. 以下图为光合作用过程表示图，在适合条件下种植的小麦，假如忽然将 c 降至极低水平（其他条件不变），则短时间内a、 b 在叶绿体中的含量变化将会是( )A．a、 b 都上涨 B ． a 上涨、 b 降落C．a、 b 都降落 D ． a 降落、 b 上涨7．在火星上工作的美国“勇气号”“机会号”探测车的一个重要任务就是采集有关Fe2O3及其硫酸盐的信息，用以证明火星上存在或以前存在过水。
2020届深圳市耀华实验学校初中部高三英语上学期期中试卷及参考答案
2020届深圳市耀华实验学校初中部高三英语上学期期中试卷及参考答案第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项ABest of British：Outdoor CinemasLuna Beach Cinema, BrightonOn the beaches of Brighton this summer, you can enjoy the lapping of waves as you take inFinding Dory, Moana and Sharknadoover a month-long residency. This spot boasts the highest definition outdoor LED screen in the country. stretching to an impressive 33 feet!Moonlight Flicks, ChesterThe biggest outdoor cinema in the North West of England, Moonlight Flicks will be showing some serious blockbusters（大片）this summer, including A Star Is Born and singalong crowd-pleaser, The Greatest Showman. Cinephiles can gather on the lawn and plug into wireless headphones to ensure perfect sound quality.Rooftop Film Club, LondonEnjoy cult classics and family favorites while looking out on a view of London's skyline with the city's unique Rooftop Film Club. The current programme only runs until June 30 and our top picks include The Breakfast Club, Fargo and a special 65th anniversary showing of Rear Window.Chirk Castle, Wrexham, North WalesThe 11th-century Chirk Castle was first built under the reign o£ Edward I, but now it's the destination for Silly Walk superfans, as they put on screenings of the cult classic, Monty Python and the Holy Grail. Has there ever been a more perfect surrounding to enjoy the comedy capers of King Arthur and his dozy squire?1. What can you enjoy in the biggest outdoor cinema in the North West of England?A.Finding DoryB.A Star Is BornC.The Breakfast ClubD.Monty Python and the Holy Grail.2. Where can you enjoy a special anniversary show?A. Luna Beach Cinema, Brighton.B. Moonlight Flicks, Chester.C. Rooftop Film Club, London.D. Chirk Castle, Wrexham, North Wales3. What's the purpose of writing the text?A. To encourage summer activities.B. To advertise several cult classics.C. To recommend some blockbusters.D. To introduce outdoor cinemas.BMany teens may feel anxious sometimes. It’s the kind of nervousness that makes you bite your nails before a big test. We spend more time online than we should. We feel good about ourselves or bad based on how many Likes and Followers we get on social media. Young people are developing a false view of life.On the screen, we see what people want to show us. People usually only post photos where they are looking their best. They are surrounded by friends and seem that they are having a great time. No one seems sad or lonely. In short, life isfabulous. But sooner or later, our young people compare their real life to it. They find that theirs doesn’t seem as fun or exciting and grow worried that they may be missing out.No wonder teachers are reporting more anxious students. It’s reported that a lot more college students feel ―overwhelming anxiety. The percentage jumped from 50% in 2011 to 62% in 2016. Anxiety is now the most common mental-health problem in my country. It affects nearly one-third of teens and adults.Certainly, we can’t blame it on social media alone. We expect toomuch from our children and a lot of these expectations aren’t reasonable. Their schedules are packed with sports, clubs and homework. They don’t have enough free time. We want our children to succeed, and we don’t care how much it costs.As parents, we must have more balance. On one hand, we push too hard, and on the other hand, we make life too easy for children. We shouldn’t and can’t promise our children that they will always be happy. We shouldn’t try to protect them from the problems of everyday life. Let them solve the problems in person.4. What is the text mainly about?A. What causes teens’ nervousness.B. How to deal with teens’ anxiety.C. What a view of life means to people.D. How to treat social media appropriately.5. What does the underlined word “fabulous” in paragraph 2 mean?A. Wonderful.B. Encouraging.C. Anxious.D. Doubtful.6. Why does the author mention the numbers in paragraph 3?A. To draw teachers’ attention.B. To show teachers’ mental problems.C. To present the seriousness of teens’ anxiety.D. To show adults have more problems than teens.7. What should parents do to help their children out?A. Try to meet their expectations.B. Help them with their homework.C. Give them more free time to play sports.D. Allow them to solve their own problems in life.CWhy can friendships be hard? Because often people aren't as honest and open as they should be. Sometimes, people end up getting hurt.Most problems with friendships come up because people are just too selfish to care about the things that their friends need. They care about their own needs much more, which makes it hard for friendships to work. However, being selfish is part of human nature. A person is put together in order to take care of himself and his own needs, not necessarily those needs of other people. Even though being selfish is something that all humans are born with, it is something that everyone should guard against.The best thing to remember when you are a friend to anyone is that you need to treat your friend the same way as you'd like to be treated. This is wonderful advice for a friendship, because it is really the only way to make sure that you are giving your friend everything you would want to be given in a friendship. Whenever you have a question about how you should treat a friend, it is easy to find an answer simply by asking yourself what you would like your friend to do for you, if he or she is in your shoes.Even if you're always thinking about how you'd like to be treated, and your friends are too, there are issues that come up from time to time in each friendship, and it is important to understand how to deal with these issues so that you can build stronger and healthier friendships. Issues like friends getting boyfriends or girlfriends and not spending enough time with their friends, or even friends finding new friends and leaving old friends behind are issues that will probably come up with one or more of your friendships. It is important to know how to deal with these issues so that you can keep your friends and make new ones. No one wants to have a broken friendship.8. Why may problems with friendships appear?A. One is selfish.B. One is alone.C. One is too anxious.D. One is too busy.9. What's the first and most important thing to be other people's friend?A. Not to hurt your friends' feelings.B. To give your friends whatever you have.C. To treat your friends as fairly as possible.D. Not to think of your own needs any more.10. What is the text mainly about?A. The Meaning of FriendshipsB. The Importance of FriendshipsC. The Advantages of FriendshipsD. The Problems with Friendships11. What may follow the last paragraph of the text?A. How to make many friends.B. How to keep friends happy.C. How to treat friends correctly.D. How to solve friendship issues.DOne day when I was 5, my mother criticized me for not finishing my rice and I got angry. I wanted to play outside and not to be made to finish eating my old rice. In my angry motion to open the screen door (纱门) with my foot, I kicked back about a 12-inch part of the lower left hand corner of the new screen door. But I had no regret, for I was happy to be playing in the backyard with my toys.Today, I know if my child had done what I did, I would have criticized my child, and told him about how expensive this new screen door was, and I would have delivered a spanking (打屁股) for it. But my parents never said a word. They left the corner of the screen door pushed out, creating an opening, a crack in the defense against unwanted insects.For years, every time I saw that corner of the screen, it would remind me of my mistake from time to time. For years, I knew that everyone in my family would see that hole and remember who did it. For years, every time I saw a fly buzzing in the kitchen, I would wonder if it came in through the hole that I had created with my angry foot. I would wonder if my family members were thinking the same thing, silently blaming me every time a flying insectentered our home, making life more terrible for us all. My parents taught me a valuable lesson, one that a spanking or stern (严厉的) words perhaps could not deliver. Their silent punishment for what I had done delivered a hundred stern messages to me. Aboveall, it has helped me become a more patient person and not burst out so easily.12. When the author damaged the door, his parents _______.A. scolded him for what he had doneB. left the door unrepairedC. told him how expensive it wasD. gave him a spanking13. How did the author feel every time he saw the damaged door?A. He felt ashamed of his uncontrolled anger at that time.B. He found that his family members no longer liked him.C. He found it destroyed the happy atmosphere at his home.D. He felt he had to work hard to make up for (弥补) the damage.14. The experience may cause the author _______.A. to hide his anger away from othersB. not to go against his parents’ willC. to have a better control of himselfD. not to make mistakes in the future15. What of the following is the main idea of this passage?A. Adults should ignore their children’s bad behavior.B. Parents shouldn’t educate their children.C. What is the best way to become a more patient person?D. Silent punishment may have a better effect on educating people.第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。
2020年深圳市耀华实验学校初中部高三语文第一次联考试卷及答案
2020年深圳市耀华实验学校初中部高三语文第一次联考试卷及答案一、现代文阅读（36分）(一)现代文阅读I(9分)阅读下面的文字，完成各题。
材料一经常网购的消费者会发现，拆包裹时都会有“很费力”的感受。
但是，为了防止商品在运输过程中被损坏，卖家和快递公司只好在包装上下功夫。
为什么不少扎点胶纸或胶带呢?某快递网点负责人说:“我们也想节约成本，但如果因为包装问题，在物流过程中商品损坏，造成损失，就得不偿失了。
”市邮管局有关负责人介绍，2016年中国200万个快递员运送了350亿个包裹。
包裹多了，肯定会产生垃圾。
快递只是运输环节，而且我们国家没有关于快递包装的环保标准。
记者了解到，我国现行的多为推荐性指标，约束力不强，执行有难度。
尽快解决快递带来的包装垃圾问题，已经成为社会各界的共识。
“包装过度”与“安全所需”，如何在两者之间获取平衡，如何使商家与消费者尽量采用环保材料，如何实现回收——循环——再利用，这些正引起社会各界的广泛关注。
(选自2017年3月2日《深圳特区报》)材料二图1图2(选自《中国快递领域绿色包装发展现状及趋势报告》)材料三在对待快递包装问题上，不同的人有不同的烦恼。
买家既想让“宝贝”拥有“金钟罩”，又为家里堆积如山的快递包装物烦恼;店家担心快递途中物品受损便“里三层外三层”地包个严严实实，成本自然就高出许多;快递公司面对五花八门的包装只好望“包”兴叹，回收与不回收也是一个两难的问题。
在我国大力推动绿色经济的背景下，对“两高一剩”(高污染、高能耗、产能过剩)企业的规范和整治是重点，而由于电商蓬勃发展所催生的物流行业所带来的环保问题，目前还得不到有效的管理与规范。
绿色经济的发展离不开整个社会绿色、环保、可持续发展的意识，大到国家的产业政策，小到人们的日常环保意识，缺一不可。
而这些日常细节需要从人们很小的时候进行教育和规范，知识和规则需要不断地在人们头脑中强化，因此，真正推动环保和绿色事业，需要从基础的教育工作抓起。
广东省深圳市耀华实验学校2020学年高一数学上学期期中试题(实验班)
深圳市耀华实验学校2020－2020学年度上学期期中考试高一实验 数学试卷考试时间：120分钟 试卷满分：150分一、选择题(每小题5分，共60分)1. 若U ＝{1,2,3,4}，M ＝{1,2}，N ＝{2,3}，则∁U (M ∪N )是( )A ．{1,2,3}B ．{2}C ．{1,3,4}D ．{4}2．函数x y -=3的定义域为（ ）A ．)3,0(B ．]3,0[C ．]3,(-∞D ．)3,(-∞ 3. 下列函数中，在R 上单调递增的是 （ ） A. y x = B. 2log y x =C. 13y x =D. 0.5xy =4．21log 2=（ ） A ．1- B ．12-C ．1D ．2 5. 下列函数是奇函数的是（ ）A ． 21x y = B ．xy 2= C ． x y = D ．x y 2log =6. 数2y 1 (0,1)x aa a -=+>≠且的图象必经过点（ ）A.（0，1）B.（1，1）C.（2，1）D.（2，2）7．设0.3777,0.3,log 0.3a b c ===，则c b a ,,的大小关系是（ ）A ．c b a <<B ．a b c <<C ．b a c <<D ．a c b << 8．函数3()33f x x x =--一定有零点的区间是（ ）A. (2,3)B. (1,2)C. (0,1)D. (1,0)- 9. 设()833-+=x x f x,用二分法求方程()2,10833∈=-+x x x在内近似解的过中 得()()(),025.1,05.1,01<><f f f 则方程的根落在区间（ ）A.（1,1.25）B.（1.25,1.5）C.（1.5,2）D.不能确定10.定义两种运算ab b a =⊕， a b a b ⊗=+，则函数()22f x x x =⊗-⊕ 是（ ） A. 非奇非偶函数且在(,)-∞+∞上是减函数 B. 非奇非偶函数且在(,)-∞+∞上是增函数 C. 偶函数且在(,)-∞+∞上是增函数 D. 奇函数且在(,)-∞+∞上是减函数11. 已知01a <<，则在同一坐标系中,函数xy a -=与log a y x =的图象是（ ）12.定义：区间[])(,2121x x x x <的长度为21x x -．已知函数||2x y =的定义域为[],a b ，值域为[]1,2，记区间[],a b 的最大长度为m , 最小长度为n ．则函数)2()(n x m x g x+-=的零点个数是 （ ）A ．1B ．2C ．0D ．3二．填空题(每小题5分，共20分)13. 当x ∈[-1,1]时，函数f (x )=3x-2的值域为 .14．若幂函数f (x )＝(m 2－4m ＋4)·268m m x－＋在(0，＋∞)上为增函数，则m 的值为 .15．已知函数f (x )＝⎪⎩⎪⎨⎧，≤ ，，＞，020log 3x x x x 则⎪⎪⎭⎫⎝⎛⎪⎭⎫ ⎝⎛91f f 的值为_____． 16. 函数()x f 的定义域为A ，若A x x ∈21,且()()21x f x f =时总有21x x =，则称()x f 为单函数。
2020届深圳市耀华实验学校初中部高三语文期中考试试卷及参考答案
2020届深圳市耀华实验学校初中部高三语文期中考试试卷及参考答案一、现代文阅读（36分）(一)现代文阅读I(9分)阅读下面的文字，完成下面小题。
松之风侯军①我对松树的认知，是从一根房梁开始的。
那时我只有十几岁，每天就睡在阁楼上。
忽然有一天，一个并不经常来往的堂叔来到我家，跟父亲嘀咕了一个晚上。
转天，父亲就让我去跟奶奶睡了，说要把阁楼拆掉。
②我问奶奶为什么。
奶奶说，你老伯的儿子要学拉大提琴，老师要给孩子亲手做一把好琴，说是必须要用老松木才行。
你老伯也不知怎么打听到咱家有一根房梁是老松木的，就是搭阁楼用的那根。
这是给孩子学本事的大事，你爸跟我一商量，我就说，不就是一根木头吗？给他吧！③从此，我记住了这根房梁，也记住了做好琴必须用老松木。
我的潜意识里就一直萦绕着一个臆想：当那根房梁变身为大提琴之后，会发出何等美妙的声音呢？④对松的印象伴随某种美妙的旋律，深深烙在我心底。
稍长，学唱《沙家浜》——“要学那，泰山顶上一青松呐——”天长日久，心底又萌生一个向往：等我长大了，一定要到泰山顶上，去看看那个“一青松”。
⑤我第一次去泰山是1980年。
好不容易爬到山顶，却发现泰山顶上哪里只是“一青松”啊，漫山遍野都是青松。
⑥后来，所见的古松名松越来越多。
我发现几乎所有名山大川名胜古迹，都有松树的身影，“天下名山松占多”，这么说一点都不过分。
暮色苍茫中，我去看过庐山的“劲松”，虬枝盘绕，苍劲峥嵘；在北岳恒山，我登上“虎风口”，看过号称恒山十八景之一的“虎田悬松”；在南岳衡山，我也曾来到“磨镜台”观松。
然而，最令人难忘的还是黄山的松，黄山最出名的那棵“迎客松”堪称是黄山的名片。
真是奇松与怪石并峙，苍崖共云海同天。
⑦中国人自古就有一种松树情结。
追溯源头，大概与两千多年前孔夫子的那句赞语有关：“岁寒，然后知松柏之后凋也。
”从此，松柏成为不惧严寒、顽强不屈坚忍勇武的象征。
一般而言，无论植物还是动物，一旦被赋予某种象征意义，就会逐渐演变为一种文化符号，慢浸入到这个民族的精神血脉之中。
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深圳市耀华实验学校2018届高三上学期期中考试数学（文科）本试卷共22小题，满分150分.考试用时120分钟.注意事项：1．答卷前，考生先检查试卷与答题卷是否整洁无缺损，并用黑色字迹的签字笔在答题卷指定位置填写自己的班级、姓名、学号和座位号。
2．选择题每小题选出答案后，请将答案填写在答题卷上对应的题目序号后，如需改动，用橡皮擦干净后，再选涂其它答案，答案不能答在试卷上。
不按要求填涂的，答案无效。
3．非选择题必须用黑色字迹的签字笔作答，答案必须写在答题卷各题目指定区域内相应位置上，请注意每题答题空间，预先合理安排；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．考生必须保持答题卷的整洁，考试结束后，将答题卷交回。
一、选择题：本大题共12小题，每小题5分，满分60分． 1．设0a b <<，则下列不等式中不成立的是A ．11a b > B. 11a b a>- C ．||||a b > D.22a b > 2．不等式(21)(31)0x x -+>的解集是A ．1|3x x ⎧<-⎨⎩或12x ⎫>⎬⎭B ．}2131|{<<-x xC ．}21|{>x xD ．}31|{->x x3．若曲线4()f x x x =-在点P 处的切线平行于直线30x y -=，则点P 的坐标为A ．(1,3)B ．(1,3)-C ．(1,0)D ．(1,0)-4．若()1sin π3α-=，且ππ2α≤≤，则sin 2α的值为A ．9-B ．9-C ．9D ．95．为了得到函数πsin(2)6y x =-的图象,可以将函数πsin(2)6y x =+的图象A ．向右平移π6个单位长度 B ．向右平移π3个单位长度C ．向左平移π6个单位长度D ．向左平移π3个单位长度6．ABC ∆的内角A 、B 、C 的对边分别为a 、b 、c ，若4523A a b =︒==，，，则B 等于A ．30︒B ．60︒C ．30︒或150︒D ．60︒或120︒ 7．已知等差数列{}n a 的前n 项和为55,5,15n S a S ==,则数列11n n a a +⎧⎫⎨⎬⎩⎭的前100项和为A ．100101B ．99101C ．99100 D ．1011008．已知空间几何体的三视图如图所示，则该几何体的体积是A.34 B. 38 C ． 4 D ．89．已知轴截面是正方形的圆柱的高与球的直径相等，则圆柱的全面积与球的表面积的比是A ．6∶5B ．5∶4C ．4∶3D ．3∶210．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2c a =，则cos B =A ．14 B ．34C ．24D ．2311．已知变量 x y ,满足约束条件23033010x y x y y -+≥⎧⎪-+≤⎨⎪-≤⎩，若目标函数z y ax =-仅．在点(3,0)-处取到最大值，则实数a 的取值范围为 A ．(3,5)B ．1(,)2+∞C ．(1,2) -D ．1(,1)312．已知函数()ln a f x x x=-，若2()f x x <在()1,+∞上恒成立，则a 的取值范围是 左视图22俯视图2A ．[)1,-+∞B ．[)1,1-C ． 1,)-+∞(D ．(1,1)-二、填空题：本大题共4小题，每小题5分，满分20分．13．已知向量(2)m =a ，，(,2)m =b ，若//a b ，则实数m 等于___________． 14．等差数列}{n a 不是常数列，它的第2，3，6项顺次成等比数列，这个等比数列的公比是________．15．如图，在矩形ABCD 中，2,2AB BC ==，点E 为BC 的中点，点F 在边CD 上，若2AB AF ⋅=，则AE BF ⋅的值是 .16．若实数,x y 满足221x y xy ++=，则x y +的最大值是 ． 三、解答题：本大题共6小题，满分70分． 17．（本小题满分10分）设向量,a b 满足1==a b 及327-=a b （Ⅰ）求向量,a b 的夹角的大小； （Ⅱ）求3+a b 的值. 18．（本小题满分12分）ABC ∆中，内角A 、B 、C 的对边分别为a 、b 、c ，已知a 、b 、c 成等比数列，3cos 4B =．（Ⅰ）求11tan tan A C+的值； （Ⅱ）设32BA BC ⋅=，求a c +的值.19．（本小题满分12分）已知数列{}n a 的前n 项和2=n S n ,*n ∈N .（Ⅰ）求数列{}n a 的通项公式；（Ⅱ）已知2nn n b a =⋅，求数列{}n b 的前n 项和记为n T ．20.（本题满分12分）本公司计划2018年在甲、乙两个电视台做总时间不超过300分钟的广告，广告总费用不超过9万元，甲、乙电视台的广告收费标准分别为500元/分钟和200元/分钟，规定甲、乙两个电视台为该公司所做的每分钟广告，能给公司事来的收益分别为0.3万元和0.2万（第15题图）元．问该公司如何分配在甲、乙两个电视台的广告时间，才能使公司的收益最大，最大收益是多少万元？21．(本小题满分12分)设数列{}n a 的前n 项和为,n S 已知24,111+==+n n a S a (*)n N ∈. （Ⅰ）设12n n n b a a +=-，证明数列{}n b 是等比数列； （Ⅱ）求数列{}n a 的通项公式． 22．(本小题满分12分)设函数()ln ,R mf x x m x=+∈ （Ⅰ）当e m =（e 为自然对数的底数）时，求()f x 的极小值； （Ⅱ）若函数()()3xg x f x '=-存在唯一零点，求m 的取值范围．数学（文科）参考答案一、选择题：本大题每小题5分，满分60分．二、填空题：本大题每小题5分；满分20分．13．2±. 14．3. 15． 16．3． 三、解答题：17．（本小题满分10分）设向量,a b 满足1==a b 及32-=a b （Ⅰ）求向量,a b 的夹角的大小； （Ⅱ）求3+a b 的值.解：（Ⅰ）设,a b 所成角为θ，由32-=a b2291247-⋅+=a a b b ，将1==a b 代入得：12⋅=a b ， ……………3分 所以1||||cos cos 2θθ⋅===a b a b ， ……………4分又[0,π]θ∈，故π3θ=，即,a b 所成角的大小为π3． ……………6分（Ⅱ）因为22222|3|969||6||13+=+⋅+=+⋅+=a b a a b b a a b b ……………9分所以3+=a b ……………10分 18．（本小题满分12分）ABC ∆中，内角A 、B 、C 的对边分别为a 、b 、c ，已知a 、b 、c 成等比数列，3cos 4B =． （Ⅰ）求11tan tan A C+的值；（Ⅱ）设32BA BC ⋅=，求a c +的值.解：（Ⅰ）由3cos 4B =，0πB <<得sin B ==，∵a 、b 、c 成等比数列， ∴2b ac =， 由正弦定理可得2sin sin sin a b cR A B C===， ∴2sin sin sin B A C =， 于是11tan tan A C +cos cos sin sin A C A C =+sin cos cos sin sin sin C A C A A C +=2sin()sin A C B+=2sin 1sin sin 7B B B ===. ……………6分（Ⅱ）由.2,2,43cos ,23cos 232====⋅=⋅b ca B B ca 即可得由得 由32BA BC ⋅=得3cos 2ca B =，而3cos 4B =，∴22b ac ==，由余弦定理，得2222cos b a c ac B =+-， ∴225a c +=，∴2()529a c ac +=+=，∴3a c +=. ……………12分19．（本小题满分12分）已知数列{}n a 的前n 项和2=n S n ,*n ∈N .（Ⅰ）求数列{}n a 的通项公式；（Ⅱ）已知2nn n b a =⋅，求数列{}n b 的前n 项和记为n T ．解：（Ⅰ）当1n =时，111a S ==；……………………………………………2分当2n ≥时，()221121n n n a S S n n n -=-=--=-.………………………4分21n a n ∴=-，*n N ∈ ……………………………………………………………6分()212n n b n ∴=-⋅，*n N ∈………………………………………………………8分（Ⅱ）123n n T b b b b =++++即()123123252212nn T n =⋅+⋅+⋅+⋅⋅⋅+-⋅------------①① ⨯2得 2()2341123252212n n T n +=⋅+⋅+⋅+⋅⋅⋅+-⋅ ----------------②①-②：()12312222222212nn n T n +-=+⋅+⋅+⋅⋅⋅+⋅--()6426nn =--,()4626n n T n ∴=-+. ………………………………………12分20．（本小题满分12分）本公司计划2018年在甲、乙两个电视台做总时间不超过300分钟的广告，广告总费用不超过9万元，甲、乙电视台的广告收费标准分别为500元/分钟和200元/分钟，规定甲、乙两个电视台为该公司所做的每分钟广告，能给公司事来的收益分别为0.3万元和0.2万元．问该公司如何分配在甲、乙两个电视台的广告时间，才能使公司的收益最大，最大收益是多少万元？解：设公司在甲电视台和乙电视台做广告的时间分别为x 分钟和y 分钟，总收益为z 元，由题意得3005002009000000.x y x y x y +≤⎧⎪+≤⎨⎪≥≥⎩，，，目标函数为30002000z x y =+．二元一次不等式组等价于3005290000.x y x y x y +≤⎧⎪+≤⎨⎪≥≥⎩，，，作出二元一次不等式组所表示的平面区域， 即可行域． 如图：作直线:300020000l x y +=，即320x y +=．l平移直线l ，从图中可知，当直线l 过M 点时， 目标函数取得最大值．联立30052900.x y x y +=⎧⎨+=⎩，解得100200x y ==，．∴点M 的坐标为(100200)，． …………………………………………10分max 30002000700000z x y ∴=+=（元）. ……………………………………11分答：该公司在甲电视台做100分钟广告，在乙电视台做200分钟广告，公司的收益最大，最大收益是70万元． …………………………………12分 21．设数列{}n a 的前n 项和为,n S 已知24,111+==+n n a S a (*)n N ∈. （Ⅰ）设12n n n b a a +=-，证明数列{}n b 是等比数列； （Ⅱ）求数列{}n a 的通项公式．18．解：（Ⅰ）由11,a =及142n n S a +=+，有12142,a a a +=+21121325,23a a b a a =+=∴=-=∵ 142n n S a +=+(*)n N ∈. ① ∴142n n S a -=+(2,*)n n N ≥∈. ② ②－①得1144n n n a a a +-=-，∴ )2(2211-+-=-n n n n a a a a ， 设12n n n b a a +=-，则)2(21≥=-n b b n n ．且3232112121=+=-=-=a a S a a b ．∴数列}{n b 是首项为3，公比为2的等比数列．……………………………………6分 （Ⅱ）由（Ⅰ）可得123-⋅=n n b ，∴ 11232-+⋅=-n n n a a ，∴113422n n n n a a ++-=，设2n n na c =，则134n nc c +-=, ∴21211==a c ． ∴ {n c }是以21为首项，公差为43的等差数列．∴ 4143-=n c n ，∴ 22(31)2n n n n a c n -==-⋅． ……………………………………12分22．（本小题满分12分）设函数()ln ,R mf x x m x=+∈ （Ⅰ）当m e =（e 为自然对数的底数）时，()f x 的极小值； （Ⅱ）若函数()()3xg x f x '=-存在唯一零点，求m 的范围． 解：（Ⅰ）由题设，当m e =时，()ln ef x x x=+，则()2x ef x x-'=，由()0f x '=，得x e =．∴当()0,x e ∈，()0f x '<，()f x 在()0,e 上单调递减， 当(),x e ∈+∞，()0f x '>，()f x 在(),e +∞上单调递增， ∴当x e =时，()f x 取得极小值()ln 2ef e e e=+=， ∴()f x 的极小值为2. ……………………………………6分 （Ⅱ）由题设()()()21033x m xg x f x x x x '=-=-->， 令()0g x =，得()3103m x x x =-+>． 设()()3103x x x x ϕ=-+≥，则()()()2111x x x x ϕ'=-+=--+， 当()0,1x ∈时，()0x ϕ'>，()x ϕ在()0,1上单调递增； 当()1,x ∈+∞时，()0x ϕ'<，()x ϕ在()1,+∞上单调递减．∴1x =是()x ϕ的唯一极值点，且是极大值点，因此1x =也是()x ϕ的最大值点． ∴()x ϕ的最大值为()213ϕ=．又()00ϕ=，结合()y x ϕ=的图象（如图），可知 当23m =时，函数()g x 有且只有一个零点； 当0m ≤时，函数()g x 有且只有一个零点． 所以，当23m =或0m ≤时，函数()g x 有且只有一个零点.…………………………12分。