四川省成都七中万达学校2022-2023学年高三上学期入学考试英语试题(含答案)
四川省成都市第七中学2022-2023学年高三英语第一学期期末学业质量监测模拟试题含解析
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2022-2023高三上英语期末模拟试卷注意事项:1.答题前,考生先将自己的姓名、准考证号填写清楚,将条形码准确粘贴在考生信息条形码粘贴区。
2.选择题必须使用2B铅笔填涂;非选择题必须使用0.5毫米黑色字迹的签字笔书写,字体工整、笔迹清楚。
3.请按照题号顺序在各题目的答题区域内作答,超出答题区域书写的答案无效;在草稿纸、试题卷上答题无效。
4.保持卡面清洁,不要折叠,不要弄破、弄皱,不准使用涂改液、修正带、刮纸刀。
第一部分(共20小题,每小题1.5分,满分30分)1.Maybe some of you are curious about what my life was like on the streets because I’ve never really talked about it ______.A.in place B.in turn C.in force D.in depth2.The recently released film Kong:Skull Island successfully ________ the audience to the adventure with Dolby 3-D technology.A.transports B.adjustsC.transforms D.relates3.The Internet is so much a part of our culture that it affects our lives by acting as a______ for face-to-face contacts.A.preference B.motivationC.substitute D.guideline4.With the nuclear crisis worsening in Iran, the world’s attention is fixed again on________is called the Middle East.A.which B.what C.that D.it5.They were abroad during the months when we were carrying out the investigation, or they __________to our help.A.would have come B.could comeC.have come D.had come6.During each NBA season, basketball fans cheer on their favorite teams to make_______ through.A.it B.themC.that D.those7.He’s as a “bellyacher”—he’s always complaining about s omething. A.who is known B.whom is knownC.what is known D.which is known8.That preserved historic village connected to downtown by a highway is ________many office workers spend their weekends.A.what B.howC.where D.why9.—What about going abroad for further study?—Great, but I never expected ______ a chance for me before.A.there to be B.there beingC.it to be D.it being10.The monitor said that the learning method he used improved his maths. A.greatly B.nearly C.normally D.seriously11.--Hello,________________--Oh,sorry. I've got the wrong number.A.Dr. Brown's office. B.Who's that speaking?C.Can I help you?D.Is that Dr. Brown?12.The security judge was very _________ when she explained that the driving licence was necessary for her work .A.reasonable B.natural C.ridiculous D.available13.Last year I applied to Princeton University.I ____ they would say yes—but they did, and now here I am.A.never think B.am never thinkingC.have never thought D.never thought14.China’s BeiDou Navigati on Satellite System, whose positioning ________ will reach 2.5 meters by 2020, will soon provide services for more countries.A.accuracy B.categoryC.function D.reference15.I ordered a drink while I______ for my friends to come.A.will wait B.am waitingC.would wait D.was waiting16.If you think that the illness might be serious, you should not _________ going to the doctor.A.put off B.set aboutC.hold back D.give away17.It is obvious to the students _____________they should get well prepared for their future.A.as B.thatC.which D.whether18.By the side of the teaching building of our school _____, which was completed in 2009.A.there standing the library B.does the library standC.the library stands D.stands the library19.Don’t touch your eyes, nose and mouth, because they aren’t covered by skin and can _______ the virus more easily.A.take up B.pick up C.make up D.set up20.It is global warming, rather than other factors, ___the extreme weather.A.that have led to B.which has causedC.which are causing D.that has led to第二部分阅读理解(满分40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。
四川省成都市成都外国语学校2022-2023学年高三英语第一学期期末教学质量检测模拟试题含解析
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2022-2023高三上英语期末模拟试卷请考生注意:1.请用2B铅笔将选择题答案涂填在答题纸相应位置上,请用0.5毫米及以上黑色字迹的钢笔或签字笔将主观题的答案写在答题纸相应的答题区内。
写在试题卷、草稿纸上均无效。
2.答题前,认真阅读答题纸上的《注意事项》,按规定答题。
第一部分(共20小题,每小题1.5分,满分30分)1.---My son is addicted to computer games. He is hopeless,isn't he?---Yes,_____________he is determined to give up and start all over.A.if B.unlessC.though D.so2.-I feel caught between experience and jobs after graduation.-It’s really_________—without experience you can’t get a job and without a job you can’t get experience.A.a catch-22 B.a Herculean taskC.a sacred cow D.a Mickey Mouse course3.In the past few years, we’ve seen works by Chinese sci-fi writers winning international ______.A.conclusion B.standardC.potential D.recognition4.A good government is not to pick technologies, but to establish conditions ________ innovation is supported and encouraged into the marketplace.A.when B.thatC.as D.where5.I have to reschedule the appointment with you since there is a ______ in my arrangement.A.contract B.contrast C.connection D.conflict 6.The Oxford English Dictionary is necessary for learning English,so you'd better buy __________.A.this B.that C.it D.one7.Rent usually ________ up in the summer, when college graduates are moving out of their dormitories and seeking for new places to move in.A.will go B.goesC.has gone D.went8.Although the situation was tough during the economic crisis now things are beginningto ________.A.look up B.keep up C.set up D.build up9.Though winters in Britain are cold and there is usually snow, there are ________ places for skiing.A.some B.many C.few D.a few10.While in the university, we were offered a number of after-school activities toour social skills.A.createB.growC.settleD.develop11.It is immediately clear ______ the financial crisis will soon be over.A.since B.whatC.when D.whether12.The boy stood his head down, listening to his mother scolding him for breaking the windows.A.for B.of C.with D.around13.The style of the campus is quite different from ______ of most Chinese universities where visitors were amazed by the complex architectural space and abundant building types.A.that B.one C.the one D.those14.The beautiful mountain village we spent our holiday last year is located in is now part of Guangxi.A.which; where B.where; what C.that; what D.when; which 15.—Mum, I broke Dad’s sunglasses this morning.—You need to make an apology for your fault, ________ you will regret.A.and B.orC.but D.for16.The manager is trying to find a man to recommend how the job .A.is done B.be done C.should done D.to do17.Scientists have introduced a new model of 3D printer, ______ differs from the existing ones in certain aspects.A.as B.which C.who D.that18.Loneliness is a feeling _______ people experience a powerful rush of emptiness and solitude.A.which B.where C.that D.how19.---Where is my Chinese book? I remember I put it here yesterday.---You _________ it in the wrong place.A.must put B.should have putC.might have put D.might put20.—How do you find the health club?—I would rather I ______ it. I feel its management is going from bad to worse. A.haven’t joined B.hadn’t joinedC.didn’t join D.had joined第二部分阅读理解(满分40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。
四川省成都市2022-2023学年七年级下学期期末英语试题(含答案)
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四川省成都市2022-2023学年七年级下学期期末英语试题阅卷人一、听句子,根据所听到的内容选择正确答语。
每小题念两遍。
(共5小题;每小题1分,计5分)得分1.听句子,根据所听到的内容选择正确答语。
A.See you.B.Good idea.C.You are well.2.听句子,根据所听到的内容选择正确答语。
A.Thank you.B.Not much.C.You're right.3.听句子,根据所听到的内容选择正确答语。
A.Good luck.B.I'm sorry.C.That's for sure4.听句子,根据所听到的内容选择正确答语。
A.It was far.B.I went fishing.C.It was great.5.听句子,根据所听到的内容选择正确答语。
A.OK.B.Yes.please.C.Don't worry.阅卷人二、听句子,选择与所听句子内容相符的图片。
每小题念两遍。
(共5小题;每小题1分,计5分)得分听句子,选择与所听句子内容相符的图片。
6.7.8.9.10.阅卷人三、听对话,根据对话内容及问题选择正确答案。
每小题念两遍。
(共5小题;每小题1分,计5分)得分11.听对话,根据对话内容及问题选择正确答案。
A.Rode a horse.B.Visited his grandparents.C.Went to the science museum.12.听对话,根据对话内容及问题选择正确答案。
A.Nancy.B.Nancy's mother.C.Nancy's father.13.听对话,根据对话内容及问题选择正确答案。
A.Blue.B.White.C.Blonde.14.听对话,根据对话内容及问题选择正确答案。
A.In the restaurant.B.In the cinema.C.At home.15.听对话,根据对话内容及问题选择正确答案。
四川省成都市第七中学2022-2023学年高一上学期12月月考英语试卷(含答案、听力材料)
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高2025届2022-2023学年度上期12月阶段性测试英语试卷第一部分听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话。
每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1.When is the weather report?A.At8:35.B.At9:00.C.At9:25.2.What does the man need?A.A new computer.B.A new keyboard.C.A new mouse.3.Where does the conversation probably take place?A.At a wedding.B.At a birthday party.C.At a baby shower.4.What does the man say about his new job?A.It’s very stressful.B.It’s a position in a bank.C.The pay isn’t that satisfying.5.What does the man think the woman should do?pletely rewrite her paper.B.Remove the marked places.C.Make a few corrections.第二节(共15小题;每小题1.5分,满分22.5分)听下面5段对话或独白。
每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。
每段对话或独白读两遍。
听第6段材料,回答第6、7题。
6.What relation probably is Ms.Leska to the woman?A.Her roommate.B.Her colleague.C.Her cousin.7.What will Tara do at3:00pm?A.Meet Professor Albee.B.Pick up Kevin.C.Teach Claudia’s class.听第7段材料,回答第8、9题。
四川省成都市第七中学2024-2025学年高三上学期10月月考数学试题(含答案)
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2024-2025学年度高三上期数学10月阶段性测试(考试时间:120分钟;满分150分)第Ⅰ卷(选择题,共58分)一、单项选择题:本题共8小题,每小题5分,共40分.1.已知集合,则( )A .B .C .D .2.已知复数满足,则( )A .B .C .D .3.已知向量满足,且,则( )A .B .C .D .4.如图为函数在上的图象,则的解析式只可能是( )A .B .C .D .5.已知为奇函数,则曲线在点处的切线方程为( )A .B .C .D .6.在体积为12的三棱锥中,,平面平面,若点都在球的表面上,则球的表面积为( )A .B .C .D .7.若,则的最大值为( )ABCD8.设,则( ){{},21x A x y B y y ====+A B = (]0,1(]1,2[]1,2[]0,2z 23i z z +=+3iz+=12i+12i-2i+2i-,a b 222a b a b -=-= 1b = a b ⋅=1414-1212-()y f x =[]6,6-()f x ())ln cos f x x x=+())lnsin f x x x=+())ln cos f x x x=-())ln sin f x x x=-()()cos f x x a x =+()y f x =()()π,πf ππ0x y +-=ππ0x y -+=π0x y -+=0x y +=A BCD -,AC AD BC BD ⊥⊥ACD ⊥ππ,,34BCD ACD BCD ∠=∠=,,,A B C D O O 12π16π32π48π()()sin cos2sin αβααβ+=-()tan αβ+202420230.2024log 2023,log 2022,log 0.2023a b c ===A .B .C .D .二、多项选择题:本题共3小题,每小题6分,共18分.9.设等比数列的公比为,其前项和为,前项积为,并满足条件:,下列结论正确的是( )A .B .C .是数列中的最大值D .数列无最大值10.透明的盒子中装有大小和质地都相同的编号分别为的4个小球,从中任意摸出两个球.设事件“摸出的两个球的编号之和小于5”,事件“摸出的两个球的编号都大于2”,事件“摸出的两个球中有编号为3的球”,则( )A .事件与事件是互斥事件B .事件与事件是对立事件C .事件与事件是相互独立事件D .事件与事件是互斥事件11.已知,其中,则的取值可以是( )A .eB .C .D .第Ⅱ卷(非选择题,共92分)三、填空题:本题共3小题,每小题5分,共15分,第14题第一个空3分,第二个空2分.12.若,则______.13.设是数列的前n 项和,点在直线上,则数列的前项和为______.14.已知点是轴上的动点,且满足的外心在轴上的射影为,则点的轨迹方程为______,的最小值为______.四、解答题:本题共5小题,共77分.15.(13分)设的内角的对边分别为,且,边上的两条中线相交于点.c a b <<b c a <<b a c <<a b c<<{}n a q n n S n n T 2024120242025202511,1,01a a a a a ->><-20242025S S <202420261a a <2024T {}n T {}n T 1,2,3,41A =2A =3A =1A 2A 1A 3A 1A 3A 23A A 13A A 6ln ,6e n m m a n a =+=+e nm ≠e nm +2e23e24e1sin 3α=-()cos π2α-=n S {}n a ()()*,n n a n ∈N 2y x =1n S ⎧⎫⎨⎬⎩⎭n ()()2,0,1,4,A B M N 、y 4,MN AMN =△P y Q P PQ PB +ABC △,,A B C ,,a b c ()()()sin sin sin sin b a ABC BAC c ABC C +∠-∠=∠-,BC AC ,AD BE P(1)求;(2)若,求的面积.16.(15分)如图,在三棱锥中,是以为斜边的等腰直角三角形,是边长为2的正三角形,为的中点,为上一点,且平面平面.(1)求证:平面;(2)若平面平面,求平面与平面夹角的余弦值.17.(15分)为研究“眼睛近视是否与长时间看电子产品有关”的问题,对某班同学的近视情况和看电子产品的时间进行了统计,得到如下的列联表:每天看电子产品的时间近视情况超过一小时一小时内合计近视10人5人15人不近视10人25人35人合计20人30人50人附表:0.10.050.010.0050.0012.7063.8416.6357.87910.828.(1)根据小概率值的独立性检验,判断眼睛近视是否与长时间看电子产品有关;(2)在该班近视的同学中随机抽取3人,则至少有两人每天看电子产品超过一小时的概率是多少?(3)以频率估计概率,在该班所在学校随机抽取2人,记其中近视的人数为,每天看电子产品超过一小时的人数为,求的值.BAC ∠2,cos AD BE DPE ==∠=ABC △D ABC -ABC △AB ABD △E AD F DC BEF ⊥ABD AD ⊥BEF ABC ⊥ABD BEF BCD αx α()()()()22()n ad bc a b c d a c b d χ-=++++0.05α=2χX Y ()P X Y =18.(17分)已知函数.(1)求曲线在处的切线方程;(2)讨论函数的单调性;(3)设函数.证明:存在实数,使得曲线关于直线对称.19.(17分)已知椭圆的对称中心在坐标原点,以坐标轴为对称轴,且经过点和.(1)求椭圆的标准方程;(2)过点作不与坐标轴平行的直线交曲线于两点,过点分别向轴作垂线,垂足分别为点,,直线与直线相交于点.①求证:点在定直线上;②求面积的最大值.2024-2025学年度高三上期数学10月阶段性测试(参考答案)一、单项选择题:BAACDDDC8.【解】由对数函数的性质知,,所以;当时,,所以,取,则,所以,即,综上,.二、多项选择题:ABC ACD CD .11.【解】令,则,()()ln 1f x x =+()y f x =3x =()()()F x ax f x a =-∈R ()()1111g x x f f x x ⎛⎫⎛⎫=+-+ ⎪ ⎪⎝⎭⎝⎭m ()y g x =x m =C )⎛- ⎝C ()2,0M l C ,A B ,A B xDE AE BD P P PAB △0.20240.2024log 0.2023log 0.20241c =>=2024202420242023202320230log 1log 2023log 20241,0log 1log 2022log 20231=<<==<<=1,01,01c a b ><<<<2n >()()ln 1ln ln 10n n n +>>->()()()()222ln 1ln 1ln 1ln 1(ln )(ln )2n n n n n n ++-⎡⎤+⋅--<-⎢⎥⎣⎦()()()2222222222ln 1ln 11ln (ln )(ln )(ln )(ln )(ln )0222n n n n n n n n n ⎡⎤-+-⎡⎤⎛⎫=-=-<-=-=⎢⎥ ⎪⎢⎢⎥⎝⎭⎣⎦⎣⎦2023n =2lg2022lg2024(lg2023)0⋅-<220232024lg2022lg2023lg2022lg2024(lg2023)log 2022log 20230lg2023lg2024lg2023lg2024b a ⋅--=-=-=<⋅b a <b ac <<()6ln f x x x =-()661xf x x x-=-='故当时,单调递增,当时,单调递减,,又,不妨设,解法一:记,设,则在上恒成立,所以在上单调递减,所以,则,又因为,且在上单调递减,所以,则,所以.解法二:由,两式相减,可得,令,则;令,则,令,则在上恒成立,所以在上单调递增,因为在上恒成立,所以在上单调递增,则,即,所以.解法三:,两式相减得,,可得,三、填空题: ;3()0,6x ∈()()0,f x f x '>()6,x ∈+∞()()0,f x f x '<()()6ln ,66lne e ,e n n n m m a n a f m f =+==+∴= e n m ≠06e n m <<<12,e nx m x ==()()()()12,0,6g x f x f x x =--∈()()()()2662(6)1201212x x x g x f x f x x x x x ---=---=-=<--'''()0,6()g x ()0,6()()()()()1260,0,6g x f x f x g x =-->=∈()()()11212f x f x f x ->=()1212,6,x x -∈+∞()f x ()6,+∞1212x x -<1212x x +>e 12n m +>6ln ,66lne e nnm m a n a =+==+e 6ln e n nm m =-e (1)n t t m=>()()61ln 6ln 6ln 6ln 1,,e ,e 111n n t t t t tt m t m mt m t t t +=-===∴+=---()()()1ln 21,1g t t t t t =+-->()11ln 2ln 1t g t t t t t+=+-=+-'1ln 1(1)y t t t =+->221110t y t t t-=-=>'()1,+∞()g t '()1,+∞()()10g t g ''>=()1,+∞()g t ()1,+∞()()10g t g >=()1ln 21t t t +>-()61ln e 121n t tm t ++=>-6ln ,66lne e nnm m a n a =+==+ e 6lne ln n n mm-=-212121ln ln 2x x x xx x -+<<-e 12n m +>79-1n n +24y x =14.【解】设点,则根据点是的外心,,而,则,所以从而得到点的轨迹为,焦点为由抛物线的定义可知,因为,即,当点在线段上时等号成立.四、解答题:15.【解】(1)因为,所以由正弦定理得,由余弦定理得,又,所以.(2)因为是边上的两条中线与的交点,所以点是的重心.又,所以在中,由余弦定理,所以,又,所以,所以,所以的面积为.()0,M t ()0,4)N t -P AMN V (),2P x t -22||PM PA =2224(2)(2)x x t +=-+-2(2),24t x y t -==-P 24y x =()1,0F 1PF PQ =+4,14PF PB BF PF PB PQ PB +≥=+=++≥3PQ PB +≥P BF ()()()sin sin sin sin b a ABC BAC c ABC C +∠-∠=∠-222b c a bc +-=2221cos 22b c a BAC bc +-∠==0πBAC <∠<π3BAC ∠=P ,BC AC AD BE P ABC △2,AD BE APB DPE ==∠=∠ABP △22222cos c AB PA PB PA PB APB==+-⋅∠22442433⎛⎫=+-⨯= ⎪⎝⎭2c =π2,3BE BAC =∠=2AE BE ==24b AE ==ABC △1π42sin 23⨯⨯⨯=16.【解】(1)是边长为的正三角形,为的中点,则.且平面平面,平面平面平面,则平面.(2)由于底面为等腰直角三角形,是边长为2正三角形,可取中点,连接,则.且平面平面,且平面平面,则平面.因此两两垂直,可以建立空间直角坐标系.是边长为2的正三角形,则可求得高.底面为等腰直角三角形,求得.可以得到关键点的坐标由第(1)问知道平面的法向量可取.设平面的法向量为,且,则,则,解得.则.则平面与平面17.【解】(1)零假设为:学生患近视与长时间使用电子产品无关.计算可得,,根据小概率值的独立性检验,推断不成立,即患近视与长时间使用电子产品的习惯有关.(2)每天看电子产品超过一小时的人数为,ABD △2E AD BE AD ⊥BEF ⊥ABD BEF ,ABD BE AD =⊂ABD AD ⊥BEF ABC △ABD △AB O OD ,OD AB OC AB ⊥⊥ABC ⊥ABD ABC ABD AB =OD ⊥ABC ,,OC OA OD O xyz -ABD △OD =ABC △1OC OA OB ===()()()(0,1,0,0,1,0,1,0,0,A B C D -BEF (0,AD =-BCD (),,m x y z = ()(1,1,0,BC CD ==- 0m BC m CD ⎧⋅=⎪⎨⋅=⎪⎩x y x +=⎧⎪⎨-+=⎪⎩)m = cos ,m AD m AD m AD ⋅〈〉===⋅ BEF BCD 0H 220.0550(1025105)4006.349 3.8411535203063x χ⨯⨯-⨯==≈>=⨯⨯⨯0.05α=2χ0H ξ则,所以在该班近视的同学中随机抽取3人,则至少有两人每天看电子产品超过一小时的概率是.(3)依题意,,事件包含两种情况:①其中一人每天看电子产品超过一小时且近视,另一人既不近视,每天看电子产品也没超过一小时;②其中一人每天看电子产品超过一小时且不近视,另一人近视且每天看电子产品没超过一小时,于是,所以.18.【解】(1)切点为.因为,所以切线的斜率为,所以曲线在处的切线方程为,化简得;(2)由题意可知,则的定义域为,当时,,则在上单调递减;当时,令,即,解得,若;若,则在上单调递减,在上单调递增.综上所述,当时,在上单调递减;当时,在上单调递减,在上单调递增;()()()21310510331515C C C 45512069223C C 45591P P P ξξξ⨯+≥==+==+==6991()()1111110,22245525P X Y P X Y ===⨯====⨯=1X Y ==()1122111161C C 2551025P X Y ===⨯⨯+⨯⨯=()()()()1165301242525100P X Y P X Y P X Y P X Y ====+==+===++=()3,ln4()11f x x '=+()134k f ='=()y f x =3x =()1ln434y x -=-48ln230x y -+-=()()ln 1F x ax x =-+()F x ()1,-+∞()()11,1,,11ax a F x a x x x +-=-=∈-'+∞++0a ≤()101F x a x '=-<+()F x ()1,-+∞0a >()0F x '=10ax a +-=11x a=-()11111,01a ax a x F x a a x '-+--<≤=-=≤+()111,01ax a x F x a x +--'>=>+()F x 11,1a ⎛⎤-- ⎥⎝⎦11,a ⎛⎫-+∞ ⎪⎝⎭0a ≤()F x ()1,-+∞0a >()F x 11,1a ⎛⎤-- ⎥⎝⎦11,a ⎛⎫-+∞ ⎪⎝⎭(3)证明:函数,函数的定义域为.若存在,使得曲线关于直线对称,则关于直线对称,所以由.可知曲线关于直线对称.19.【解】(1)设椭圆的方程为,代入已知点的坐标,得:,解得,所以椭圆的标准方程为.(2)如图:①设直线的方程为,并记点,由消去,得,易知,则.由条件,,直线的方程为,直线的方程为()()111ln 1ln 2g x x x x ⎛⎫⎛⎫=++-+ ⎪ ⎪⎝⎭⎝⎭()g x ()(),10,-∞-+∞ m ()y g x =x m =()(),10,-∞-+∞ x m =12m =-()()111ln 1ln 211g x x x x ⎛⎫⎛⎫--=-+-+ ⎪ ⎪----⎝⎭⎝⎭21121lnln ln ln 111x x x x x x x x x x +++=--=-+++()()()11211211lnln ln 1ln ln 1x x x x x x x g x x x x x x+++++=+--=+-=+()y g x =12x =-C 221(0,0,)mx ny m n m n +=>>≠312413m n m n +=⎧⎪⎨+=⎪⎩1612m n ⎧=⎪⎪⎨⎪=⎪⎩C 22162x y +=l ()20x my m =+≠()()()112200,,,,,A x y B x y P x y 222,162x my x y =+⎧⎪⎨+=⎪⎩x ()223420m y my ++-=()()222Δ16832410m m m =++=+>12122242,33m y y y y m m --+==++()()12,0,,0D x E x AE ()1212y y x x x x =--BD,联立解得,所以点在定直线上.②,而,所以,则令,则,所以,当且仅当时,等号成立,所以.()2121y y x x x x =--()()2112211212012121222223my y my y x y x y my y x y y y y y y ++++====++++P 3x =0212121121111312222PAB S AD x x y x y my y my y =⋅-=⋅-=⋅-=-△121212my y y y =+()121212my y y y =+1211211224PABy y S y y y +=-=-==△t =1t >2122PAB t S t t t==≤=++△t =PAB △。
四川省成都市2023-2024学年高三上学期期末考试 英语含答案
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成都2023—2024学年度上期高2024届期末考试英语试卷(答案在最后)满分150分考试时间:120分钟第I卷第一部分听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话。
每段对话后有一个小题,从题中所给的A、B、C,三个选项中选出最佳选项,并标在试卷的相应位置。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1.What does the man plan to do?A.Attend a concert.B.See a film.C.Watch a game.2.What is the man doing?A.Asking permission.B.Offering help.C.Finding the smoking area.3.When did the woman come back home?A.At8:00B.At10:00.C.At11:00.4.Where does the woman want to have dinner?A.At the man’s house.B.At the Red Rose Restaurant.C.At the Blue Moon Restaurant.5.What will the woman do?A.Take a bath.B.Cook a meal.C.Call her dad.第二节(共15小题;每小题1.5分,满分22.5分)听下面5段对话或独白。
每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听完每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。
每段对话或独白读两遍。
请听第6段材料,回答6至7题。
6.How much will the woman pay?A.$100.B.$200.C.$400.7.What does the woman ask the man to do?A.Walk the dog twice a day.B.Feed the dog every two hours.C.Get the dog’s registration papers.请听第7段材料,回答8至9题。
精品解析:四川省成都市七中2022-2023学年高三上学期零模(二)语文试题(原卷版)
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(二)实用类文本阅读(本题共3小题,12分)
阅读下面的文字,完成下面小题。
材料一:
当前,我国的城镇化水平已达到63.9%,城市发展已从过去的增量扩张主导发展阶段逐步转向内涵品质发展阶段。当前,我国人居环境建设领域面临着城市发展规模ቤተ መጻሕፍቲ ባይዱ局与资源生态环境承载能力不相适应,城市发展建设的能耗、资源消耗和碳排总量高,城市安全韧性不足,宜居质量与健康水平不高,交通拥堵,文化保护传承不够,城市的包容性、创新性不足等突出的“城市病”问题,解决这些问题需要有新的方法手段。
明初采用了权力集中和政治高压的两手策略,后来又大兴文字狱,实行文化专制,出版政策仍然沿袭元代,书籍的印刷由官府控制,对通俗文艺禁限极严。到了明中期,情况发生了很大变化。成化年间出现了士大夫私人刻书和官府间相互馈赠所刻图书的现象,这些活动不再受朝廷限制。民间刻书活动开始活跃,通俗文学的整理刊刻也出现了,最直接的证据就是1967年在上海嘉定县一个明代墓穴中发现的成化七年至十四年北京永顺堂刊印的“说唱词话”。据研究,这些刊本是墓主人宣昶妻子的随葬品。宣昶无论其家乡还是任所都距北京有千里之遥,照样能读到北京出版的新书,说明此类书籍流通范围之广。既然成化时期的书商们已经开始注意刊刻通俗文学作品,并且所刊说唱词话《花关索传》就是民间三国故事,如果当时真有一部《三国志演义》的抄本在流传,相信书商们不会不予重视和刊刻的。
小说作品一般都是先有抄本,后有刊本,但《三国志演义》未见抄本传世,海内外现存的30多种明刊本中以嘉靖本为最早,书前有庸愚子蒋大器写于明弘治甲寅仲春的《序》和修髯子张尚德写于嘉靖壬午的《引》。据魏安《〈三国演义〉版本考》论证,上海图书馆所藏残页可能就是刘若愚《酌中志》著录的《三国志通俗演义》,即嘉靖元年修髯子作《引》的原本,也就是人们所说的司礼监本,其他嘉靖本都以它为底本。司礼监本刊行后,又有朝廷都察院刊本和郭勋家刻本。于是,《三国志演义》迅速在社会上传播开来,模仿之作便雨后春笋般涌现出来。
四川省成都市第七中学2022-2023学年高三上学期入学考试数学(理)试题
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四川省成都市第七中学2022-2023学年高三上学期入学考试数学(理)试题学校:___________姓名:___________班级:___________考号:___________一、单选题A.4B.57.莫高窟坐落在甘肃的敦煌,它是世界上现存规模最大每年都会吸引来自世界各地的游客参观旅游个开放洞窟,在这8个洞窟中莫高窟九层楼号窟被誉为最值得参观的洞窟.根据疫情防控的需要,莫高窟改为极速参观模式,游客需从套票包含的开放洞窟中随机选择观洞窟的概率是()A.47B.128.设,,l m n表示直线,,αβ表示平面,使A.αβ⊥,//lβC.//l n,nα⊥9.等比数列{}a的前n项和为S,若二、填空题中,15.在ABC的面积,则若S为ABC16.已知抛物线过,A B两点分别作四边形PMFN的面积为三、解答题17.已知公差d(1)求数列{}n a的通项公式;b=(2)若数列2n18.如图所示,在四棱锥BC=,又SD=1(1)证明://CF 平面SAB ;(2)求平面SAD 与平面SAB 所成的锐二面角的余弦值19.《中国统计年鉴2021》数据显示,截止到千万辆.下图是2011年至2020图.(注:年份代码1-10分别对应年份(1)由折线图能够看出,可以用线性回归模型拟合(2)建立y 关于t 的线性回归方程(系数精确到量.参考数据:15.5y =,(101i i t =∑25550.5159.8≈,25690.5参考公式:相关系数n r =∑。
四川省成都市2022-2023学年七年级下学期期中英语试题(含答案、无音频)
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2022~2023学年度下期期中测试卷七年级英语(考试时间:120分钟满分:150分)注意事项:1.全卷分为A卷和B卷,A卷满分100分,B卷满分50分;考试时间120分钟。
2.在作答前,考生务必将自己的姓名、准考证号填写在试卷相应的位置。
A卷(共100分)第一部分听力(共30小题;计30分)一、听句子,根据所听到的内容选择正确答语。
每小题读两遍。
(共5小题;每小题1分,计5分)( ) 1. A. Yes, he does. B. Yes, he is. C. Yes, he can.( ) 2. A. 10 dollars. B. 10 minutes. C. 10 kilometers.( ) 3. A. They’re cute. B. They’re scary. C. They’re tall.( ) 4. A. Thanks. B. Sorry. C. I’d love to.( ) 5. A. That’s for sure. B. Not much. C. Good luck.二、听句子,选择与你所听到的句子意思相符合的图片,并将代表图片的字母填在相应的题号后。
每小题读两遍。
(共5小题;每小题1分,计5分)A B C D E6.______7.______8.______9.______ 10.______三、听对话,根据对话内容及问题选择正确答案。
每段对话读两遍。
(共10小题;每小题1分,计10分) ( ) 11. A. The art club. B. The story telling club. C. The music club. ( ) 12. A. 10 kilometers. B. 8 kilometers. C. 2 kilometers. ( ) 13. A. Teacher and student. B. Father and son. C. Classmates. ( ) 14. A. 7:45 a.m. B. 8:00 a.m. C. 8:35 a.m. ( ) 15. A. It’s cloudy. B. It’s sunny. C. It’s rainy. ( ) 16. A. On foot. B. By bus. C. By bike.( ) 17. A. Useful B. Strict C. Boring.( ) 18. A. Play basketball. B. Play chess. C. Listen to music. ( ) 19. A. Russia. B. China. C. Thailand. ( ) 20. A. He is watching a movie.B. He is talking with Mary.C. He is playing computer games.四、听短文,根据短文内容选择正确答案。
四川省成都市第七中学2022-2023学年九年级上学期七中英语试题(含听力)
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成都七中初中学校2023届九年级上期半期测试英语A卷(共100分)第一部分听力部分(共30小题,计30分)一、听句子,根据所听到的内容选择正确答语,每小题念两遍。
(共5小题,每小题1分;共5分)( ) 1.A. By studying in groups. B. He studies English every day.C. He practices speaking English hard.( ) 2. A. You’re welcome. B. I think so. C. No problem.( ) 3. A. It’s the closest. B. It’s convenient. C. It’s near the bank.( ) 4. A. No, he is the same as you. B. Yes, he has really changed.C. Yes, he studied hard before( ) 5. A. In Shanghai. B. Last summer. C. It’s made of wood.二、听句子,选择与你所听到句子意思相符合的图片,并将代表图片的字母填在相应的位置,每小题念两遍。
(共5小题,每小题1分;共5分)A B C D E6. ______7. ______8. ______9. ______ 10. ______三、听对话,根据对话内容及问题选择正确答案,每小题念两遍。
(共10小题,每小题1分;共10分)( ) 11. A. Listen to tapes. B. Do more reading C. Watch English movies.( ) 12.A. On April 15th. B. On April 16th. C. On April 17th.( ) 13.A.At3:15pm. B. At3:15 am. C. At 3:45 pm.( ) 14.A. Swimming B. Skating C. Running.( ) 15.A. In Thailand B. In Japan C. In China.( ) 16. A. One hour. B. One hour and a half. C. Two hours and a half.( ) 17.A. By bike. B. By car C. On foot( ) 18. A. Traffic rules. B. School rules. C. Library rules.( ) 19.A. In a bookstore B. In a library. C. At a bus station.( ) 20.A. Doing his homework. B. Turning on the TV. C. Watching TV.四、听短文,根据短文内容选择正确答案。
四川省成都市第七中学2022-2023学年八年级上学期期中英语试题(含听力)
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成都七中初中学校2022-2023学年度初二上半期监测试题英语A卷(100分)第一部分听力测试(共30小题,计30分)一、听句子,根据所听到的内容选择正确答语。
每小题读两遍。
(共5小题,每小题1分;计5分)( ) 1. A. Yes, I do. B. Yes, Bob. C. Thank you.( ) 2. A. Delicious. B. She likes it. C. Yes, it was.( ) 3. A. No, she doesn’t. B. On Friday. C. Sometimes.( ) 4. A. Nice to see you. B. Not at all. C. Don’t worry. I can help you.( ) 5. A. Really? B. Science. C. It’s for me.二、听句子,选择与你所听到的句子意思相符合的图片,并将代表图片的字母填在相应的题号后。
每小题读两遍。
(共5小题,每小题1分;计5分)6. ___b___7. ___c___8. ___a___9. ___d___ 10. ___e___三、听对话,根据对话内容及问题选择正确答案。
每段对话读两遍。
(共10小题,每小题1分,计10分)( ) 11. A. She went to the cinema.B. She went to the zoo.C. She went camping.( ) 12. A. Every day. B. Once a week C. Three times a week.( ) 13. A. Outgoing and Hard-working.B. Outgoing and smart.C. Smart and hard-working.( ) 14. A. Near the hotel. B. Near the school. C. Near People’s Park.( ) 15. A. He played computer games.B. He watched games on TV.C. He watched an action movie.( ) 16. A. Brown. B. Blue. C. Red.( ) 17. A. Two B. Three. C. Four.( ) 18. A. 39. B. 38. C. 37.( ) 19. A. He washed his clothes.B. He watched TV for 2 hours.C. He finished his math test paper.( ) 20. A. 6 years old. B. 16 years old. C. 26 years old.四、听短文,根据短文内容选择正确答案。
四川省成都七中万达学校2023-2024学年高二上学期11月期中化学试题(含答案)
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成都七中万达学校高2022级高二(上)期中考试化学试题(考试时间:75分钟 试卷满分:100分)可能用到的相对原子质量:H-1 C-12 N-14 O-16 Na-23 Mg-24 S-32 Cl-35.5 Fe-56一、选择题:本题共16个小题,每小题3分,共48分.在每小题给出的四个选项中,只有一项是符合题目要求的.1.下列物质的用途或事实与盐类的水解无关的是( )A .硫酸钡用作钡餐B .明矾用于净水C .硫酸铝溶液和碳酸氢钠溶液用于泡沫灭火器D .由制取无水固体时,需在HCl 气流中蒸发2.二氧化硫的催化氧化反应:是工业制硫酸中的重要反应.某温度下,在一密闭容器中探究二氧化硫的催化氧化反应,下列叙述正确的是( )A .加入合适催化剂可以提高的平衡产率 B .缩小容器容积可以增大活化分子百分含量C .扩大容器容积可以提高的平衡产率D .缩小容器容积可以增大反应速率3.利用如图所示装置测定盐酸与氢氧化钠溶液反应的中和热,下列说法正确的是( )A .向盐酸中加入氢氧化钠溶液时沿玻璃棒缓慢倒入B .揭开杯盖,用玻璃棒搅拌,让溶液混合均匀—温度计C .用环形铜丝搅拌棒代替环形玻璃搅拌棒,不影响实验结果D .改用等浓度的氨水代替氢氧化钠溶液测出的偏大4.下列关于热化学反应的描述中正确的是( )A .HCl 和反应的反应热与和反应的反应热一定相同B .的燃烧热是则的C.反应物的总能量低于生成物的总能量时,反应一定需要加热才能发生()422KAl SO 12H O ⋅32FeCl 6H O ⋅3FeCl ()()()223O g +2SO g 2SO g H 0∆<A A †‡AA3SO 3SO H ∆NaOH 24H SO ()2Ba OH ()CO g 1283.0kJ mol -⋅()()()222CO g =2CO g +O g 1H 2283.0kJ mol -∆=+⨯⋅D .一定的温度和压强下,将和置于密闭容器中充分反应,放出热量,热化学方程式为5.在常温下,有关下列4种溶液的叙述不正确的是( )编号①②③④溶液醋酸盐酸氨水氢氧化钠溶液331111A .4种溶液中由水电离出的均为B .等体积的溶液①和②分别与足量锌充分反应,溶液①产生氢气更多C .将溶液②、③等体积混合,所得溶液中:D .将amL 溶液②与bmL 溶液④混合后,若所得溶液的,则6.下列事实不能用勒夏特列原理解释的是( )A .新制的氯水放置一段时间,溶液的会减小B .在配制硫酸亚铁溶液时往往要加入少量铁粉C .恒容容器中反应达到平衡后,升高温度,气体颜色变深D .增大压强,有利于与反应生成7.下列实验操作对应的现象和结论均正确的是( )选项实验操作实验现象实验结论A向和KSCN 混合溶液中加入少量KCl 固体溶液颜色变浅平衡向逆反应方向移动B等体积的HX 和HY 两种酸分别与足量的铁反应,用排水法收集气体HX 放出的氢气多且反应速率快酸性:C将的氨水稀释为,测量稀释前后溶液稀释后减小稀释后氨水的电离程度减小D向溶液中通入少量气体有白色沉淀生成酸性:20.5mol N 21.5mol H 19.3kJ ()()()1223N g +3H g 2NH g H 38.6kJ mol -∆=-⋅A A †‡AApH()c H+111mol 110L --⋅⨯()()()()4c Cl>c NH >c H >c OH -++-pH 4=a :b =11:9pH ()()()()22CO g +NO g CO g +NO g H 0∆<A A †‡AA2SO 2O 3SO 3FeCl ()33FeCl +3KSCN e SCN +3KCl A A †‡AA pH 2=HX <HY0.1mol/L 0.01mol/L pHpH ()220mL Ca ClO 2SO 23H SO >HClOA .AB .BC .CD .D8.下列物质的除杂或检验方法与化学平衡移动原理无关的是( )A .除去中的HCl :用饱和食盐水洗气B .除去中的:用酸性溶液洗气C .除去中的蒸气:用饱和溶液洗气D .检验:取少量待测液于试管中,加入浓溶液,加热,将湿润的红色石蕊试纸放在试管口 9.下列对生产生活中事实的解释不正确的是( )选项事实解释A 合成氨选择铁触媒做催化剂铁触媒能提高反应的活化能B 用醋酸能除去水垢中的醋酸的酸性强于碳酸C用净化天然水和天然水中的水解相互促进,生成胶体,吸附水中悬浮物,加速其沉降D用作内服造影剂胃液中的对的沉淀溶解平衡基本没有影响,可以保持在安全浓度范围内A .AB .BC .CD .D10.下列关于工业合成氨的叙述正确的是( )A .及时从反应体系中分离出氨气,有利于平衡向正反应方向移动B .催化剂能缩短反应达到平衡状态所用的时间,而压强无此作用C .工业合成氨的反应是熵增的放热反应,在任何温度下都能自发进行D .高温、高压都能缩短反应达到平衡状态所用的时间,而只有高温有利于提高合成氨的产率11.下列各组离子在指定溶液中一定能大量共存的是( )A .与Al 反应能放出的溶液:B .使甲基橙变红的溶液中:C .在的溶液中:D .常温下,水电离出的溶液中:12.已知反应,在三个不同容积的容器中分别充入与,恒温恒容,测得平衡时CO 的转化率如表:序号温度/℃容器体积CO 转化率平衡压强/Pa2Cl 2CO 2SO 4KMnO 2SO 24H SO 3NaHSO 4NH +NaOH 3CaCO ()243Al SO 3+Al 3HCO -()3A1OH 4BaSO H +4BaSO 2+Ba 2H 2+433NH Ba HSO HCO +--、、、2+43Fe NH Cl NO +--、、、()()+6c H 10mol/L c OH-=3+24Al H Cl SO +--、、、()+131c H10mol L --=⋅24ClO K Na SO -++-、、、()()()23CO g +2H g CH OH g H ∆A A †‡AA1mol CO 22mol H①20050%②20070%③35050%下列说法正确的是( )A .平衡时反应速率;③>①>②B .平衡时体系压强:C .若容器体积,则D .若实验②中CO 和用量均加倍,则CO 转化率小于70%13.下列关于室温时溶液中离子浓度关系的说法正确的是( )A .溶液中:B .溶液中:C .的混合溶液:D .溶液和相比,前者大于后者14.某同学在两个相同的特制容器中分别加入溶液和溶液,再分别用盐酸滴定,利用计和压强传感器检测,得到如图线.已知:常温下,酚酞的变色范围是,甲基橙的变色范围是.下列说法不正确的是( )A .溶液和溶液中微粒种类相同B 图中曲线甲和丁表示向溶液中滴加盐酸1V 1P 2V 2P 3V 3P P :P =5:413V >V H 0∆<2H 1230.1mol L Na CO -⋅()()23c Na =2c CO +-140.1mol L NH Cl -⋅()()()()4c Cl>c H >c NH >c OH -++-pH 7<33CH COOH CH COONa 、()()3c CH COO<c Na -+140.1mol L NH Cl -⋅1320.1mol L NH H O -⋅⋅()4c NH +12320mL 0.4mol L Na CO -⋅1340mL 0.2mol L NaHCO -⋅10.4mol L -⋅pH pH 8.2~10.0pH 3.1~4.423Na CO 3NaHCO 23Na COC .在b 点发生反应的离子方程式为D .滴定分析时,a 点可用酚酞、c 点可用甲基橙作指示剂指示滴定终点15.臭氧是理想的烟气脱硝试剂,其脱硝反应为:,若反应在恒容密闭容器中进行,如表由该反应相关图象作出的判断正确的是( )A .甲图中改变的反应条件为升温B .乙图中温度,纵坐标可代表的百分含量C .丙图为充入稀有气体时速率变化D .丁图中a 、b 、c 三点只有b 点已经达到平衡状态16.室温时,取和(一元酸,混合溶液,用溶液滴定,滴定曲线如图所示.下列说法不正确的是( )A .a 点时,溶液中B .b 点时,C .c 点时,D .a →c 过程中,水的电离程度逐渐增大二、非选择题:本题共4个小题,共52分.17.(10分)回答下列问题:(1)甲烷是一种高效清洁的新能源,甲烷完全燃烧生成液态水放出热量,则甲烷燃烧热的热化学方程式为___________.2322CO +2H CO H O -+=↑+()()()()232522NO g + O g N O g +O g H 0∆<A A †‡AA21T >T 2NO 10.lmol L HCl -⋅10.1mol L HA -⋅3a K 110-=⨯20mL 1mol L 0.1NaOH -⋅()()c Cl >c HA -()()()()c Na=c Cl =c HA +c A +--()1c A0.05mol L--=⋅0.25mol 222.5kJ(2)已知:则反应的_______.(3)已知:查阅文献资料,化学键的键能如下表:化学键键键键436946391①氨分解反应的活化能,则合成氨反应的活化能______ .②氨气完全燃烧生成和气态水的热化学方程式为___________________.(4)研究氮氧化物与悬浮的大气中海盐粒子的相互作用时,涉及如下反应:I .Ⅱ.则反应的______(用表示).18.(13分)油气开采、石油化工、煤化工等行业的废气中均含有硫化氢,需要将其回收处理并加以利用.I .高温热分解法:(1)该反应的化学平衡常数表达式为___________________.(2)升高温度,该反应的化学平衡常数___________________(填“变大”“变小”或“不变”).(3)工业上,通常在等温、等压条件下将与Ar 的混合气体通入反应器,发生热分解反应,达到平衡状态后,若继续向反应器中通入Ar ,的平衡转化率会____________填“增大”“减小”或“不变”),利用平衡常数与浓度商的关系说明理由:__________________________.Ⅱ.克劳斯法:已知:()()()12232SO g +O g =2SO g H xkJ mol -∆=-⋅()()()1222NO g +O g =2NO g H ykJ mol -∆=-⋅()()()()223NO g +SO g =SO g +NO g H ∆=1kJ mol -⋅()()()12222H g +O g =2H O g H 483.6kJ mol -∆=-⋅H H —N N ≡N H —()1E/kJ mol -⋅()()()32213NH g N g +H g 22=1a1E 300kJ mol -=⋅()()()22313N g H g N H g 22+=a2E =1kJ mol -⋅()2N g ()()()()2312NO g +NaCl s =NaNO s +ClNO g H 0∆<()()()222NO g +Cl g 2C NO g 0l H =∆<()()()()()2324NO g +2NaCl s 2NaNO s +2NO g +Cl g =H ∆=12H H ∆∆、()()()12222H S g S g +2H g H 170kJ mol -∆=+⋅A A †‡AA2H S 2H S 2H S ()()()()22222H S g +O g S g +2H O g A A †‡AA()()()()1222212H S g +3O g =2SO g +2H O g H 1036kJ mol-∆=-⋅()()()()1222224H S g +2SO g =3S g +4H O g H 94kJ mol -∆=+⋅(4)用克劳斯法处理,若生成,放出热量_________kJ .(5)用克劳斯法处理时,研究人员对反应条件对产率的影响进行了如下研究.①其他条件相同时,相同时间内,产率随温度的变化如图1所示.由图1可见,随着温度升高,产率先增大后减小,原因是_____________.②其他条件相同时,相同时间内,产率随值的变化如图2所示.值过高不利于提高产率,可能的原因是___________.19.(13分)绿矾()是一种重要的化工原料.为检测某部分被氧化的绿矾中亚铁离子的质量分数设计如下实验.步骤一:精确称量部分被氧化的绿矾,加入适量硫酸溶解并配制成溶液.步骤二:取所配溶液于锥形瓶中,用溶液滴定至终点.步骤三:重复步骤二2~3次,平均消耗溶液的体积为.(1)步骤一中需要用到下列仪器中的____________ (填选项字母).A .B .C .D .(2)步骤二中溶液应用____________(填“酸式”或“碱式”)滴定管盛装.滴定时发生反应的离子方程式为______________.(3)滴定前,有关滴定管的正确操作为(选出正确操作并按序排列):检漏→蒸馏水洗涤→(_______)→(______)→(______)→(_______)→(______)→开始滴定.2H S ()21mol S g 2H S 2S 2S 2S 2S ()()22n O n H S ()()22n O n H S 2S 42FeSO 7H O ⋅ 5.000g 250mL 25.00mL 140.0100mol L KMnO -⋅4KMnO 20.00mL 4KMnOA .装入溶液至零刻度以上B .用溶液润洗2至3次C .排除气泡D .记录起始读数E .调整液面至零刻度或零刻度以下(4)步骤二中滴定至终点时的实验现象为_________________________.(5)被氧化的绿矾中亚铁离子的质量分数为__________________________;(6)下列情况会造成测定结果偏高的是__________(填字母).a .盛装溶液的滴定管,未用溶液润洗b .盛装绿矾溶液的锥形瓶,用蒸馏水洗过后未用绿矾溶液润洗c .盛装溶液的滴定管,滴定前尖嘴处有气泡,滴定后气泡消失d .滴定终点读数时,俯视滴定管的刻度20.(16分)电解质水溶液中存在电离平衡、水解平衡、溶解平衡,请回答下列问题.(1)已知部分弱酸的电离常数如表:弱酸HCN电离常数(25℃)①溶液和溶液中,_____ (填“>”“<”或“=”).②常温下,相同的三种溶液:A . B . C .,其物质的量浓度由大到小的顺序是______(填编号).③室温下,一定浓度的溶液,溶液中____________.④将少量通入NaCN 溶液,反应的离子方程式是_____________.(2)室温下,通入溶液中,在所得溶液中,溶液的_________.(室温下,的;)(3)已知25℃氯水溶液中和分别所占分数随变化的关系如图所示.由图可知该温度下HClO 的电离常数值为___________.410mol L .0100KMnO -⋅410mol L .0100KMnO -⋅4KMnO 4KMnO 4KMnO 3CH COOH23H CO 5a K 1.810-=⨯10a K 4.310-=⨯7a1K 5.010-=⨯11a2K 5.610-=⨯10.1mol L NaCN -⋅130.1mol L NaHCO -⋅()c CN-()3c HCO -pH 3CH COONa NaCN 23Na CO 3CH COONa pH 9=()()33c CH COO c CH COOH -=2CO 2SO NaOH ()()233c HSO :c SO =10:1--pH =23H SO 2a1K 1.5410-=⨯7a2K 1.010-=⨯()2Cl aq HClO 、ClO -(α)pH(4)已知:常温下则溶液的______7(填“>”“<”或“=”).(5)尾气常用溶液吸收,生成和.已知的水解常数,常温下某和混合溶液的为5,则混合溶液中和的比值为_______.4532b NH H O NH +OH K 1.810+--⋅=⨯A A †‡AA 22a1H Y H +HY K 5.410+--=⨯A A †‡AA 25a 2HY H +Y K 5.410-+--=⨯A A †‡AA()42NH Y pH 2NO NaOH 3NaNO 2NaNO 2NO -11h 1mo K 21l L 0--=⋅⨯2NaNO 2HNO pH ()2c NO -()2c HNO成都七中万达学校高2022级高二(上)期中考试化学答案选择题,共16题计48分ADDBC BBBAA CCDCA C 17.(10分)(1)CH 4(g)+2O 2=CO 2(g)+2H 2O(l) ΔH =−890kJ/mol (2分)(2)(2分)(3)254(2分) 4NH 3(g)+3O 2(g)⇌2N 2(g)+6H 2O(g) ΔH =−1266.8kJ/mol (2分)(4)2ΔH 1−ΔH 2(2分)18(13分)(1)(1分)(2)变大 (3) ①. 增大 ②. 达到平衡状态后,若继续向反应器中通入Ar ,容器体积增大,各反应物和产物浓度减小相同的倍数,此时Q c =<K ,平衡正向移动(4)314 (5) ①. 该反应是放热反应,反应未达到平衡时,升高温度,的生成速率增大,单位时间的生成量增大,转化率增大,当反应达到平衡时,升高温度,平衡逆向移动,的转化率减小 ②. O 2浓度过高,H 2S 和O 2会反应生成SO 2,导致产率减小19.(13分)(1)BC(2)酸式(1分) 5Fe 2++MnO 4-+8H +=5Fe 3++Mn 2++4H 2O (3)BACED(4)当加入最后半滴高锰酸钾溶液,溶液颜色由黄色变为浅紫色,且半分钟内不恢复,说明达到了滴定终点(5)11.2% ac20. (16分) ①. < ②. A >B >C ③. l.8×104 ④. CN -+CO 2+H 2O=HCN+ ⑤. 6 ⑥. 10-7.5 ⑦. < ⑧. 50y-x2()()()22222c H c S c H S ()()()22222c H c S c H S 2S 2S 2S 2S -3HCO。
四川省成都市第七中学2022-2023学年高三上学期12月阶段性测试数学(文)试题(含答案解析)
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四川省成都市第七中学2022-2023学年高三上学期12月阶段性测试数学(文)试题学校:___________姓名:___________班级:___________考号:___________一、单选题1.已知集合{}13A x N x =∈≤≤,{}2650B x x x =-+<,则A B = ()A .∅B .{}1,2,3C .(]1,3D .{}2,32.在复平面内,复数212i(1i)z +=+(i 为虚数单位),则复数z 的共轭复数对应的点位于()A .第一象限B .第二象限C .第三象限D .第四象限3.设函数()()2log 4,22,2x x x f x x ⎧-+<=⎨>⎩,则()()24log 5f f -+=()A .5B .6C .7D .84.若实数x 、y 满足210104210x y x y x y +-⎧⎪--⎨⎪-+⎩,则z =x +3y 的最小值为()A .-9B .1C .32D .25.已知6log 2a =,sin1b =,12c =,则a ,b ,c 的大小关系为()A .a c b<<B .b a c <<C .c b a<<D .a b c<<6.某正方体被截去部分后得到的空间几何体的三视图如图所示,则该空间几何体的体积为()A .132B .223C .152D .2337.将3个1和2个0随机排成一行,则2个0不相邻的概率为()A .0.3B .0.5C .0.6D .0.88.函数()()cos f x A x ωϕ=+(0A >,0ω>,02πϕ<<)的部分图象如图所示,则()A .3πϕ=,73πω=B .()2y f x =+是奇函数C .直线4x =-是()f x 的对称轴D .函数()f x 在[]3,4上单调递减9.在ABC 中,()()221tan 7π2:sin πcos cos 21tan 2Bp B C A B B -⎛⎫-⋅=-+⋅+ ⎪⎝⎭+,:q ABC 为直角三角形,则“p ”是“q ”的()A .充分不必要条件B .必要不充分条件C .充要条件D .既不充分也不必要条件10.已知m 是区间[]0,4内任取的一个数,那么函数3221()233f x x x m x =-++在x ∈R 上是增函数的概率是()A .14B .13C .12D .2311.双曲线2222:1(0,0)x y C a b a b-=>>与抛物线28y x =有共同的焦点2F ,双曲线左焦点为1F ,点P 是双曲线右支一点,过1F 向12F PF ∠的角平分线做垂线,垂足为,1N ON =,则双曲线的离心率是()A .2BC .43D112.已知函数()(),f x g x 的定义域均为()R,f x 为偶函数,且()()21f x g x +-=,()()43g x f x --=,下列说法正确的有()A .函数()g x 的图象关于1x =对称B .函数()f x 的图象关于()1,2--对称C .函数()f x 是以4为周期的周期函数D .函数()g x 是以6为周期的周期函数二、填空题13.已知()()()1,2,,3,2a b a b a λ==-⊥,则b = __________.14.已知抛物线22y x =的焦点为F ,准线为l ,点A 在抛物线上,点B 在l 上,若ABF △为等边三角形,则ABF △的面积为__________.15.ABC 的内角,,A B C 的对边分别为,,a b c .若π6,2,3b ac B ===,则ABC 的面积为__________.16.已知正方体1111ABCD A B C D -的棱长为2,P 是空间中任意一点.①若点P 是正方体表面上的点,则满足12AP =的动点轨迹长是π;②若点P 是线段1AD 上的点,则异面直线BP 和1B C 所成角的取值范围是,32ππ⎡⎤⎢⎥⎣⎦;③若点P 是侧面11BCC B 上的点,P 到直线BC 的距离与到点1C 的距离之和为2,则P 的轨迹是椭圆;④过点P 的平面α与正方体每条棱所成的角都相等,则平面α截正方体所得截面的最大面积是⑤设1BD 交平面11AC D 于点H ,则123BH HD =.以上说法正确的是__________.(填序号)三、解答题17.已知等差数列{}n a 的公差为()0d d ≠,前n 项和为n S ,现给出下列三个条件:①1S ,2S ,4S 成等比数列;②416S =;③()8841S a =+.请你从这三个条件中任选两个解答下列问题.(1)求n a 的通项公式;(2)若()142n n n b b a n --=,且13b =,设数列1n b ⎧⎫⎨⎬⎩⎭的前n 项和n T ,求证1132n T ≤≤.18.某省举办线上万人健步走活动,希望带动更多的人参与到全民健身中来,以更加强健的体魄、更加优异的成绩,向中国共产党百年华诞献礼.为了解群众参与健步走活动的情况,随机从参与活动的某支队伍中抽取了60人,将他们的年龄分成7段:[10,20),[20,30),[30,40),[40,50),[50,60),[60,70),[70,80]后得到如图所示的频率分布直方图.(1)以各组的区间中点值代表各组取值的平均水平,求这60人年龄的平均数;(2)一支200人的队伍,男士占其中的38,40岁以下的男士和女士分别为30和70人,请补充完整22⨯列联表,并通过计算判断是否有95%的把握认为40岁以下的群众是否参与健步走活动与性别有关.40岁以下40岁以上合计男士30女士70合计200附:22()()()()()n ad bc K a b c d a c b d -=++++()20P K k ≥L 0.050.0250.0100.0050.0010k L3.8415.0246.6357.87910.82819.如图,在梯形ABCD 中,//AB CD ,1===AD DC CB ,120BCD ∠=︒,四边形BFED 为矩形,平面BFED ⊥平面ABCD ,1BF =.(1)求证:BD ⊥平面AED ,AD ⊥平面BDEF ;(2)点P 在线段EF 上运动,求三棱锥C PBD -的体积.20.已知椭圆()2222:10x y C a b a b+=>>的焦距为2,左、右焦点分别为12,F F ,A 为椭圆C 上一点,且2AF x ⊥轴,1OM AF ⊥,M 为垂足,O 为坐标原点,且225OM AF =.(1)求椭圆C 的标准方程;(2)过椭圆C 的右焦点2F 的直线l (斜率不为0)与椭圆交于,P Q 两点,G 为x 轴正半轴上一点,且22PGF QGF ∠=∠,求点G 的坐标.21.已知函数()()()e 21,R ,sin xf x ax a bg x x x =--∈=-.(1)当[)0,x ∈+∞对,求函数()g x 的最小值;(2)若()0f x ≥对x ∈R 恒成立,求实数a 取值集合;(3)求证:对*N n ∀∈,都有11111231sin sin sin sin 1111e 1n n n n n n n n n ++++⎛⎫⎛⎫⎛⎫⎛⎫++++<⎪ ⎪⎪⎪++++-⎝⎭⎝⎭⎝⎭⎝⎭22.已知在直角坐标平面内,以坐标原点O 为极点,x 轴的正半轴为极轴,建立极坐标系,曲线C 的极坐标方程为4cos 1cos 2θρθ=-.(1)求曲线C 的直角坐标方程;(2)已知过点3,12M ⎛⎫⎪⎝⎭,倾斜角为α的直线l 与曲线C 交于A ,B 两点,若M 为线段AB的三等分点,求tan α的值.23.已知函数()21f x x x =-++.(1)求不等式()2f x x >+的解集;(2)若关于x 的不等式()1f x a x x >-+恒成立,求a 的取值范围.参考答案:1.D【分析】本题考查集合的交集,易错点在于集合A 元素是自然数,集合B 的元素是实数.【详解】∵{}{}131,2,3A x N x =∈≤≤=,{}{}265015B x x x x x =-+<=<<,∴{}2,3A B ⋂=.故选:D .2.A【分析】化简复数,求出z 的共轭复数,即可得到答案.【详解】()()212i i 12i 12i 2i 11i (1i)2i 2i i22z +++-+====-+-则z 的共轭复数为11i2+故选:A.3.D【分析】根据给定的分段函数,判断自变量取值区间,再代入计算作答.【详解】因23252<<,则22log 53<<,而()()2log 4,22,2x x x f x x ⎧-+<=⎨>⎩,所以()()2log 5224log 5log (44)2358f f -+=++=+=.故选:D 4.B【分析】做出可行域,由目标函数的几何意义求得最小值.【详解】有不等式组做出可行域,如图所示:由目标函数z =x +3y 的几何意义知,其在10(,)处取得最小值,此z =1+0=1.故选:B.5.A【分析】借助中间值12比较大小即可.【详解】661log 2log 2a =<,1sin1sin 62b π=>=,所以bc a >>.故选:A.6.C【分析】根据几何体的三视图,可知该几何体是棱长为2的正方体截去两个小三棱锥,根据三棱锥的体积公式即可求解.【详解】解:根据几何体的三视图,该空间几何体是棱长为2的正方体截去两个小三棱锥,由图示可知,该空间几何体体积为3221111152111232322V ⎛⎫=-⨯⨯⨯+⨯⨯⨯= ⎪⎝⎭,故选:C.7.C【分析】利用古典概型的概率公式可求概率.【详解】解:将3个1和2个0随机排成一行,可以是:00111,01011,01101,01110,10011,10101,10110,11001,11010,11100,共10种排法,其中2个0不相邻的排列方法为:01011,01101,01110,10101,10110,11010,共6种方法,故2个0不相邻的概率为6=0.610,故选:C.8.C【分析】根据已知函数图象求得()f x 的解析式,再根据三角函数的奇偶性、对称性、以及单调性,对每个选项进行逐一判断,即可选择.【详解】根据()f x 的函数图象可知,()()cos f x A x ωϕ=+的最大值为2,又0A >,故2A =;又()01f =,即2cos 1ϕ=,则1cos 2ϕ=,又0,2πϕ⎛⎫∈ ⎪⎝⎭,故3πϕ=;又102f ⎛⎫= ⎪⎝⎭,即1cos 023πω⎛⎫+= ⎪⎝⎭,解得1,232k k Z ππωπ+=+∈,故可得2,3k k Z πωπ=+∈;又142T >,则ωπ<,又0ω>,故当0k =时,3πω=;故()2cos 33f x x ππ⎛⎫=+ ⎪⎝⎭对A :由上述求解可知,3πϕ=,3πω=,故A 错误;对B :()22cos 2cos 33f x x x πππ⎛⎫⎛⎫+=+=- ⎪ ⎪⎝⎭⎝⎭,又2cos 2cos 33x x ππ⎛⎫⎛⎫--=- ⎪⎪⎝⎭⎝⎭,故()2f x +是偶函数,故B 错误;对C :当4x =-时,()()2cos 2f x π=-=-,即当4x =-时,()f x 取得最小值,故4x =-是()f x 的对称轴,故C 正确;对D :当[]3,4x ∈时,45,3333x ππππ⎡⎤+∈⎢⎥⎣⎦,而2cos y x =-在45,33ππ⎡⎤⎢⎥⎣⎦不单调,故D 错误.故选:C.9.D【分析】利用三角恒等变换公式,把p 中等式化为sin2sin 2B C =,从而()()cos sin 0B C B C +-=,得π2B C +=或0B C -=,然后结合充分条件和必要条件的定义进行判断.【详解】由()()221tan 7π2sin πcos cos 21tan2BB C A B B -⎛⎫-⋅=-+⋅+ ⎪⎝⎭+,得()222221π2s o in cos co c s π22sin os si c s 12n B B B C C B B -⎛⎫⋅=--⋅- ⎪⎝⎭+,即()2222π22s i in cos cos π22cos sin cos s 2n BBB C C BB -⎛⎫⋅=--⋅- ⎪⎝⎭+,即sin2sin 2B C =,即()()()()sin sin B C B C B C B C ++-=+--⎡⎤⎡⎤⎣⎦⎣⎦,()()()()sin cos cos sin B C B C B C B C +-++-()()()()sin cos cos sin B C B C B C B C =+--+-整理得()()cos sin 0B C B C +-=,则()cos 0B C +=或()sin 0B C -=,因为0πB <<,0πC <<,0πB C <+<,ππB C -<-<,则π2B C +=或0B C -=,即π2A =或B C =,所以由p 不能推出q ;当ABC 为直角三角形时,A 不一定为π2,,B C 也不一定相等,所以由q 不能推出p ,故“p ”是“q ”的既不充分也不必要条件.故选:D .10.C【分析】首先得到220()4f x x x m '=-≥+恒成立,则解出m 的范围,再根据其在[0,4]内取数,利用几何概型公式得到答案.【详解】22()4f x x x m '=-+ ,3221()233f x x x m x =-++在x ∈R 上是增函数22()40f x x x m '∴=-+≥恒成立21640m ∴∆=-≤解得2m ≥或2m ≤-又m 是区间[0,4]内任取的一个数24m ∴≤≤由几何概型概率公式得函数3221()233f x x x m x =-++在x ∈R 上是增函数的概率42142P -==故选:C .11.A【分析】由抛物线的方程得焦点2(2,0)F ,延长1F N 交2PF 的延长线于点M ,由角平分线的性质得1PF PM =且1F N NM =,由中位线的性质得22F M =,根据双曲线的定义求得1a =,由双曲线的离心率公式即可得到答案.【详解】由抛物线28y x =的焦点2(2,0)F ,故2c =,延长1F N 交2PF 的延长线于点MPN 是12F PF ∠的角平分线,1F N PN ⊥于点N ,1PF PM ∴=且1F N NM=点O 是12F F 的中点,//ON PM∴212ON F M = 1ON =22F M ∴=由双曲线的定义得122PF PF a -=,故12222PF PF a F M -===1a ∴=故双曲线的离心率为221c e a ===故选:A.12.C【分析】根据题中所给条件可判断()g x 关于2x =和4x =对称,进而得()g x 的周期性,结合()g x 的周期性和()f x 的奇偶性即可判断()f x 的周期性,结合选项即可逐一求解.【详解】由()()21f x g x +-=得()()21f x g x -++=,又()f x 为偶函数,所以()()=f x f x -,进而可得()()22g x g x -=+;因此可得()g x 的图象关于2x =对称,又()()43g x f x --=可得()()843g x f x ---=,结合()f x 为偶函数,所以()()8g x g x =-,故()g x 的图象关于4x =对称,因此()()()44g x g x g x =-=+,所以()g x 是以4为周期的周期,故D 错误,由于()()()()()()223231322f x g x g x f x f x f x -=+-=--=--⇒=---,所以()()22f x f x -+-=-且()()()()224224f x f x f x f x =---=-----=-⎡⎤⎣⎦,因此()f x 的图象关于()1,1--对称,函数()f x 是以4为周期的周期函数,故C 正确,B 错误,根据()f x 是以4为周期的周期函数,由()()21f x g x +-=,()()43g x f x --=得()()24g x g x +-=,所以数()g x 的图象关于()1,2对称,故A 错误,故选:C 13.5【分析】根据()()()1,2,,3,2a b a b a λ==-⊥求出λ的值,然后再求b 【详解】()()()221,2,32,1a b λλ-=-=- 又()2a b a -⊥,220,4λλ∴-+=∴=()4,3,5b b ∴===故答案为:514【分析】先根据ABF △为等边三角形得到AF AB =,再设(A a ,表示出B 点坐标,再根据BF AB =,列出关于a 的方程,解出a ,解出三角形边长,利用面积公式即可得到答案.【详解】 ABF △为等边三角形AF AB∴=由题意得1,02F ⎛⎫⎪⎝⎭设(A a ,则12B ⎛- ⎝12BF AB a ∴==+解得32a =2AB ∴=∴ABF △是边长为2的等边三角形,122sin 602ABF S ︒∴=⨯⨯⨯=15.【分析】本题首先应用余弦定理,建立关于c 的方程,应用,a c 的关系、三角形面积公式计算求解,本题属于常见题目,难度不大,注重了基础知识、基本方法、数学式子的变形及运算求解能力的考查.【详解】由余弦定理得2222cos b a c ac B =+-,所以2221(2)2262c c c c +-⨯⨯⨯=,即212c =解得c c ==-所以2a c ==11sin22ABC S ac B ∆==⨯=【点睛】本题涉及正数开平方运算,易错点往往是余弦定理应用有误或是开方导致错误.解答此类问题,关键是在明确方法的基础上,准确记忆公式,细心计算.16.④【分析】满足12AP =的动点P 的轨迹是以A 为圆心,以12为半径的3个14圆弧,求出动点轨迹长即可判断①,证明1B C ⊥面11ABC D ,可得1B C BP ⊥,判断②,若P 到直线BC 的距离与到点1C 的距离之和为2,则点P 在线段1CC 上可判断③作出平面α截正方体的正六边形求出其面积可判断④,利用111111D A DC D D A C V V --=,求出1D H ,再利用11BH BD D H =-在求出BH .【详解】对于①,满足12AP =的动点P 的轨迹是以A 为圆心,以12为半径的3个14圆弧,因此动点轨迹为11332424ππ⨯⨯⨯=.故①正确;对于②,连接1BC ,则11B C BC ⊥,AB ⊥Q 面11BCC B ,1B C ⊂面11BCC B 1AB B C∴⊥1AB BC B =Q I ,1,AB BC ⊂面11ABC D 1B C ∴⊥面11ABC D 点P 是线段1AD 上的点,BP ∴⊂面11ABC D 可得1B C BP⊥故直线BP 和1B C 所成角恒为2π.故②不正确对于③,过点P 作PM BC ⊥于点M ,则P 到直线BC 的距离与到点1C 的距离之和为,当点P 在线段1CC 上时,112PM PC PC PC +>+=此时不满足P 到直线BC 的距离与到点1C 的距离之和为2,所以P 的轨迹为线段1CC ,故③不正确.对于④,过点P 的平面α与正方体每条棱所成的角都相等,只需过同一顶点的三条棱所成的角相等即可.111A P A R AQ ==,则平面PQR 与正方体过点1A 的三条棱所成的角相等,若点,,,,,E F G H M N 分别为相应棱的中点,则平面//EFGHMN 面PQR ,且六边形EFGHMN 为正六边形,边长,故六边形的面积为264⨯=,故④正确.对于⑤1111111111111222323D A DC D D A C A DC V V SD H H --==⨯⨯⨯==13D H ∴=1BD =1133BH BD D H ∴=-=12BH HD ∴=故⑤错误故答案为:④.17.(1)21n a n =-(2)证明见详解【分析】(1)选择①②,①③或②③,利用等比中项的性质,等差数列的通项公式和前n 项和公式将已知条件转化为关于1a 和d 的关系式,求出1a 和d 的值即可得到n a 的通项公式;(2)由(1)知184n n b b n --=-,利用累加法求出n b 的通项,再由裂项求和即可证明12n T <,再根据1n T T ≥即可证明1132n T ≤≤.【详解】(1)解:由条件①得,因为1S ,2S ,4S 成等比数列,则2214S S S =,即()()2111246a d a a d +=+,又0d ≠,则12d a =,由条件②得414616S a d =+=,即1238a d +=,由条件③得()8841S a =+,可得()11828471a d a d +=++,即11a =.若选①②,则有112238d a a d =⎧⎨+=⎩,可得112a d =⎧⎨=⎩,则()1121n a a n d n =+-=-;若选①③,则122d a ==,则()1121n a a n d n =+-=-;若选②③,则123238a d d +=+=,可得2d =,所以()1121n a a n d n =+-=-.(2)证明:由()14842n n n b b a n n --==-,且13b =,所以当2n时,则有()()()()()()21213218412131220843412n n n n n b b b b b b b b n n --+-=+-+-++-=++++-=+=- ,又13b =也满足241n b n =-,故对任意的*n ∈N ,有241n b n =-,则()()11111212122121n b n n n n ⎛⎫==- ⎪-+-+⎝⎭,所以21111112111121233521121n T n n n ⎡⎤⎛⎫⎛⎫⎛⎫=-+++- ⎪ ⎪ ⎪⎢⎥-+⎝⎛⎫=-< ⎪+⎝⎭⎝⎭⎭⎝⎭⎣⎦L ,由于21n n T n =+单调递增,所以113n T T ≥=,综上:1132n T ≤<.18.(1)37;(2)列联表答案见解析,有95%的把握认为40岁以下的群众是否参与健步走活动与性别有关.【分析】(1)根据频率分布直方图及平均数的定义直接计算即可;(2)列出22⨯列联表,计算2K 与临界值比较即可得出结论.【详解】(1)这60人年龄的平均数为150.15250.2350.3450.15550.1650.05750.0537⨯+⨯+⨯+⨯+⨯+⨯+⨯=(2)由题意队伍中男士共75人,女士125人,则22⨯列联表如下:40岁以下40岁以上合计男士304575女士7055125合计10010010020022200(30557045) 4.810010075125K ⨯⨯-⨯=⨯⨯⨯=4.8 3.8> 所以,有95%的把握认为40岁以下的群众是否参与健步走活动与性别有关.19.(1)证明见解析;(2)12.【分析】(1)根据已知条件转化垂直关系,利用线面垂直的判断定理,即可证明;(2)根据C PBD P BCD V V --=计算棱锥的体积即可.【详解】(1)证明,在梯形ABCD 中,//AB CD ,1===AD DC CB ,120BCD ∠=︒,30CDB CBD ∴∠=∠=︒,120ADC DCB ∠=∠=︒,90ADB ∴∠=︒,AD BD ∴⊥.又四边形BDEF 是矩形,DE DB∴⊥又AD DE D ⋂=Q ,BD ∴⊥平面ADE平面BFED ⊥平面ABCD ,平面BFED ⋂平面ABCD BD =,DE ⊂平面BFED ,,又ED BD ⊥ ,ED ∴⊥平面ABCD ,ED AD ∴⊥ED BD D = ,AD ∴⊥平面BDEF .(2)//,EF DB EF ⊄ 平面ABCD ,DB ⊂平面ABCD ,//EF ∴平面ABCD ,∴P 到平面ABCD 的距离等于1BF =,41sin 111222BCD BC S B C D C D ∠=⨯⨯⋅⨯=⋅=△113412C PBD P BCD V V --∴==⨯⨯=.20.(1)22143x y +=(2)()4,0G 【分析】(1)利用△1F MO ∽△12F F A 构造齐次方程,求出离心率,再利用焦距即可求出椭圆方程;(2)将直线方程与椭圆方程联立利用韦达定理求出12y y +和12y y ,利用几何关系可知0GP GQ k k +=,即可得1201221my y x y y =++,将韦达定理代入化简即可求得点G 的坐标.【详解】(1)∵椭圆的焦距为2,∴22c =,即1c =,2AF x ⊥ 轴,∴22b AF a =,则22212222b a b AF a AF a a a-=-=-=,由212AF F F ⊥,1OM AF ⊥,则△1F MO ∽△12F F A ,∴121OM OF AF AF =,即22225ac a b =-,整理得22522ac a c =+,即22520e e -+=,解得12e =或2e =(舍去)∴2a =,∴2223b a c =-=,则椭圆C 的标准方程为22143x y +=,(2)设直线l 的方程为1x my =+,且()()()11220,,,0P x y Q x y G x ,,,将直线方程与椭圆方程221431x y x my ⎧+=⎪⎨⎪=+⎩联立得()2234690m y my ++-=,()()()22236493414410m m m ∆=-⨯-⨯+=+>,则122634m y y m -+=+,122934y y m -=+,∵22PGF QGF ∠=∠,∴0GP GQ k k +=,∴()()()()1202101210201020GP GQ y x x y x x y y k k x x x x x x x x -+-+=+=----0=,∴121021200y x y x y x y x -+-=,∴()()122112210121211y my y my y x y x x y y y y ++++==++121221my y y y =++229218341146634m m m m m m -⨯-+=+=+=--+,即()4,0G .21.(1)0(2)12⎧⎫⎨⎬⎩⎭(3)证明见解析【分析】(1)求导,得到函数单调性,从而求出最小值;(2)先根据()00f =,()00f '=得到12a =,再证明出充分性成立,而12a >与12a <均不合要求,从而得到答案;(3)由第一问结论得到11sin 11n n k k n n ++⎛⎫⎛⎫< ⎪⎪++⎝⎭⎝⎭,只需证明111112311111e 1n n n n n n n n n ++++⎛⎫⎛⎫⎛⎫⎛⎫++++<⎪ ⎪ ⎪ ⎪++++-⎝⎭⎝⎭⎝⎭⎝⎭,由(2)可知,()e 10xf x x =--≥,得到()11e 1,2,3,,1en kn k k n n ++⎛⎫<=⋯ ⎪+⎝⎭,结合等比数列求和公式证明出1111111231e 1111e 1e 1n n n n n n n n n n ++++-⎛⎫⎛⎫⎛⎫⎛⎫++++<< ⎪ ⎪ ⎪ ⎪++++--⎝⎭⎝⎭⎝⎭⎝⎭.【详解】(1)()()1cos 0,g x x g x =≥'-在[)0,x ∈+∞上单调递增,所以()min ()00g x g ==.(2)()e 2xf x a '=-,由于()00f =,故()010e 21202f a a a '=-=-=⇒=,下证当12a =时,()e 10xf x x =--≥恒成立,此时令()e 10xf x '=->,解得:0x >,令()e 10xf x '=-<,解得:0x <,故()e 1xf x x =--在0x >上单调递增,在0x <上单调递减,故()e 1xf x x =--在0x =处取得极小值,也是最小值,且()()0min 0=e 010f f x =--=,故()0f x ≥对x ∈R 恒成立;当12a >时,()1e 21e x x f x ax x =-<---,则()0010e 0f -<-=,显然不合要求,舍去当12a <时,令()e 20xf x a '=->,解得:ln 2x a >,令()e 20xf x a '=-<,解得:ln 2x a <,其中ln 20a <,则()e 21xf x ax =--在ln 2x a <上单调递减,在ln 2x a >上单调递增,又()00f =,故当()ln 2,0x a ∈时,()0f x <,不合题意,舍去;综上:实数a 取值集合为12⎧⎫⎨⎬⎩⎭.(3)由(1)可知,11sin 11n n k k n n ++⎛⎫⎛⎫< ⎪ ⎪++⎝⎭⎝⎭,*N ,N k n *∈∈,所以1111123sin sin sin sin 1111n n n n n n n n n ++++⎛⎫⎛⎫⎛⎫⎛⎫++++ ⎪ ⎪ ⎪ ⎪++++⎝⎭⎝⎭⎝⎭⎝⎭ 11111231111n n n n n n n n n ++++⎛⎫⎛⎫⎛⎫⎛⎫<++++ ⎪ ⎪ ⎪ ⎪++++⎝⎭⎝⎭⎝⎭⎝⎭故只需证明:111112311111e 1n n n n n n n n n ++++⎛⎫⎛⎫⎛⎫⎛⎫++++< ⎪ ⎪ ⎪ ⎪++++-⎝⎭⎝⎭⎝⎭⎝⎭ 即可由(2)可知,()e 10x f x x =--≥,则1e x x +≤,()11(1)e n x n x ++∴+≤,令()11,2,3,,1k x k n n +==+ ,则()11e 1,2,3,,1e n k n k k n n ++⎛⎫<=⋯ ⎪+⎝⎭,()11112311231e e e e 1111e n n n n n n n n n n n +++++⎛⎫⎛⎫⎛⎫⎛⎫∴++++<++++ ⎪ ⎪ ⎪ ⎪++++⎝⎭⎝⎭⎝⎭⎝⎭ ()()11111e 1e 1e e 1e e 1ee e 1e 1e 1n n n n n +++---=⋅==<----,11111231sin sin sin sin 1111e 1n n n n n n n n n ++++⎛⎫⎛⎫⎛⎫⎛⎫∴++++< ⎪ ⎪ ⎪ ⎪++++-⎝⎭⎝⎭⎝⎭⎝⎭ .【点睛】数学问题的转化要注意等价性,也就是充分性与必要性兼备,有时在探求参数的取值范围时,为了寻找解题突破口,从满足题意得自变量范围内选择一个数,代入求得参数的取值范围,从而得到使得问题成立的一个必要条件,这个范围可能恰好就是所求范围,也可能比所求的范围大,需要验证其充分性,这就是所谓的必要性探路和充分性证明,对于特殊值的选取策略一般是某个常数,实际上时切线的横坐标,端点值或极值点等.22.(1)22y x=(2)tan 2α=或2tan 3α=【分析】(1)利用二倍角公式化简已知式,两边同乘以ρ,结合极坐标与直角坐标的互化公式即可;(2)写出直线的参数方程,代入曲线C 的方程,得到关于参数t 的一元二次方程,由已知结合韦达定理以及参数t 的几何意义,可得关于tan α的方程,求解得答案.【详解】(1)由4cos 1cos 2θρθ=-,得2sin 2cos ρθθ=,所以22sin 2cos ρθρθ=所以曲线C 的直角坐标方程为22y x =.(2)设直线l 的参数方程为3,21x tcos y tsin αα⎧=+⎪⎨⎪=+⎩(t 为参数,t ∈R ),代入22y x =,得()()22sin 2cos sin 20t t ααα---=,0∆>恒成立,所以()22cos sin sin A B t t ααα-+=,22sin A B t t α-=.由M 为线段AB 的三等分点,且0A B t t <,故2A B t t =-.将2A B t t =-代入前式,得()24cos sin sin A t ααα-=,()22cos sin sin B t ααα--=,所以()2428cos sin 2sin sin αααα---=,224(cos sin )sin ααα-=,则23tan 8tan 40αα-+=解得:tan 2α=或2tan 3α=.23.(1){}13x x x 或(2)(),3-∞【分析】(1)首先分类讨论去绝对值,再求解不等式;(2)首先讨论0x =时,a 的范围,当0x ≠时,不等式化简为2212a x x-++>,利用含绝对值三角不等式求最值,即可求得a 的取值范围.【详解】(1)()21,1,3,12,21,2,x x f x x x x -+<-⎧⎪=-≤<⎨⎪-≥⎩不等式()2f x x >+等价于1,212x x x <-⎧⎨-+>+⎩或12,32x x -≤<⎧⎨>+⎩或2,212,x x x ≥⎧⎨->+⎩解得1x <或3x >.故原不等式的解集为{}13x x x 或.(2)当0x =时,不等式()1f x a x x >-+恒成立,即a R ∈.当0x ≠时,()1f x a x x >-+可化为2212a x x -++>,因为222212123x x x x -++≥-++=,当且仅当22120x x ⎛⎫⎛⎫-+≥ ⎪⎪⎝⎭⎝⎭时等号成立所以3a <,即a 的取值范围为(),3-∞.。
四川省成都市七中英才学校2022-2023学年七年级上学期期中考试英语试卷
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四川省成都市七中英才学校2022-2023学年七年级上学期半期考试英语试卷A卷(共100分)第一部分听力(略)第二部分基础知识运用(计40分)六、选择填空。
(计20分)A.从各题的A. B、C三个选项中选出正确答案。
(共10小题,每小题1分;计10分)19.(1分)The first letter of_____ English word "UFO" is_____ "U" .()A.a;an B.the;a C.the,an20.(1分)﹣﹣﹣Look,are these your books?﹣﹣﹣No,they aren't .They're Linda's.()A.yours B.mine C.hers21.(1分)_____is my friend and_____name is Ailsa.()A.She;her B.Her;she C.She;she's22.(1分)Do you know that girl_____green?()A.on B.in C.at23.(1分)﹣Look!A set of keys_____on the teacher's desk.﹣Yes.Some books_____on it,too.()A.is;is B.are;is C.is;are24.(1分)Which underlined (划线)letter has a different (不同的)sound?()A.notebook B.not C.phone25.(1分)_____is your key and_____are my keys.()A.This:this B.This;these C.These;this26.(1分)﹣Is he your brother?﹣_____.He is my friend.()A.Yes,he is B.No,it isn'tC.No,he isn't27.(1分)﹣How can I ask Mr.Smith_____help,Lily?﹣You can call him_____516﹣8217.()A.on;at B.for;in C.for,at28.(1分)﹣Anna,are those rulers yours?﹣_____ My rulers are in my bag.()A.No,it isn't.B.No,I am not.C.No,they aren't.B.补全对话。
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成都七中万达学校高2020级高三(上)入学考试英语命题人:高三英语备课组审题人:谭明霞考试时间:120分钟满分:150分第一部分听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话。
每段对话后有一个小题,从题中所给的A、B、C 三个选项中选出最佳选项。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1.How much will the woman pay if she buys two skirts?A.$18. B.$19. C.$20.2.What will the speakers discuss first?A.A report.B.A computer.C.A pop.3.What are the speakers mainly talking about?A.A child.B.A room.C.A present.4.What can we learn about the woman?A.She is angry with the man.B.She doesn’t like her roommate.C.She is rather quiet.5.Where are the two speakers now?A.On the first floor.B.On the fourth floor.C.On the fifth floor.第二节(共15小题;每小题1.5分,满分22.5分)听下面5段对话或独白。
每段对话后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项。
听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。
每段对话或独白读两遍。
听第6段材料,回答第6、7题。
6.What was the woman doing before she went home?A.Typing a report.B.Rewriting a report.C.Reviewing a report. 7.Where did the woman have her dinner?A.In a restaurant.B.In her office.C.At home.听第7段材料,回答第8、9题。
8.Why does the man feel surprised?A.The woman has got a new job.B.The woman will work late.C.The woman disagrees with him.9.What does the woman say about her department?A.There is a lack of trust.B.There are serious problems.C.There is too much pressure.听第8段材料,回答第10至12题。
10.What are the speakers talking about?A.Popular sports events.B.TV programs people like best.C.Things people do after work.11.How did the woman do the research?A.She talked to people.B.She sent letters to people.C.She got information from papers.12.What do most people do in their spare time?A.Go to movies.B.Read books.C.Watch TV.听第9段材料,回答第13至16题。
13.Where does this conversation take place?A.At the airport.B.In a restaurant.C.On the street.14.Why does the woman like San Francisco?A.It has less traffic.B.It has the best food and music.C.People there are friendlier.15.Where does the woman come from?A.Pennsylvania.B.San Francisco.C.China.16.What does the woman think of the man’s English?A.Excellent.B.Acceptable.C.Strange.听第10段材料,回答第17至20题。
17.How many people are there in the woman’s family?A.Three. B.Four. C.Five.18.What did the children think about having dinner together at home?A.They thought it was funny.B.They disliked the idea at first.C.They liked eating with friends.19.How often did the family finally decide to have meals together?A.Every Sunday.B.Twice a week.C.Three times a week. 20.Who finally set the time for these family dinners?A.The children.B.The father.C.The woman speaker.第二部分阅读理解(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和D四个选项中,选出最佳选项。
AAsia can boast(吹嘘) that it has some of the best beaches in the world. Sihanoukville, Cambodia is a seaside town located 200km or a four-hour bus ride away from the country’s capital, Phnom Penh. With several beaches and small offshore islands, it is definitely not a place to miss out if you are intending to visit Angkor Wat, as the beaches there are stunning and still unspoiled by mass tourism.Serendipity BeachSerendipity Beach is the most popular beach for the masses, since it is the most accessible beach, being the nearest one from the main town area. There are plenty of bars scattered around the beach, so be prepared for the crazy parties every night.Ochheuteal BeachOchheuteal Beach is located south of Serendipity Beach, and it’s a bit of an improvement from Serendipity Beach itself in terms of the people that go there. Over here, there are bars and pubs, but at night, don’t expect wild parties like at the Serendipity Beach area.Otres BeachAll the way down south, near Moat Peam, lies a hidden gem called Otres Beach. This is where you can get your yoga suit on and practice meditation(冥想). This is the quietest beach in Sihanoukville and it is theleast crowded, with very few parties. If your idea of a beach holiday is just yourself and the sun, sea and sand, this place is for you.Koh RongKoh Rong is an island off Sihanoukville that is covered with beautiful sandy beaches. True relaxation lies at Long Beach, which is located on the other side of the island. Clear water surrounds the beach, and once you get there, you’ll be greeted with fine white sand.Koh Rong doesn’t have any roads, so there are no cars or motorbike rentals—everything is mostly on foot.21. Why is Serendipity Beach the most popular with tourists?A. There are a lot of wild parties.B. It is the nearest beach from the main town area.C. The food and drink are varied.D. It has plenty of cheap bars and pubs.22. Which place may be the best choice for a quiet sun bath?A. Serendipity BeachB. Ochheuteal BeachC. Otres BeachD. Rong Beach23. What is special about the beaches in Cambodia?A. They are less developed and visited.B. They are not easily accessible.C. They are within walking distance to its capital.D. They offer tasty seafood.BIf you find yourself hitting the snooze button (闹钟延时按钮) every morning, don’t blame yourself. Your work schedule could be to blame.Research now shows that, for many of us, our work schedules don’t go with our natural body clocks—and experts are urging employers to take notice. Sleep is a “strategic resource” that most companies are ignoring. When work schedules are aligned with people’s natural sleep patterns, they produce higher quality and more innovative work because they are more focused, less stressed and generally healthier. The opposite is also true—when employees are not getting enough sleep they are more likely to make major mistakes and suffer from workplace injuries.But it’s not just about the amount of sleep you get. It’s important that people recognize every living thing, from primitive bacteria to human beings, has a biologically determined internal body clock. This determines whether you are a night owl (夜猫子), an early bird or somewhere in the middle. We don’t have any choice. “It’s like feet,” said Till Roenneberg, a professor of chronobiology(生物钟学). “Some people are born with big feet and some with small feet, but most people are somewhere in the middle.”Many companies start the workday at 8 a.m. or 9 a.m., putting their work schedules in disagreement with their employees’ body clock. This mismatch, along with the pressure to be productive and be available to respond to email or take calls at all hours of the day and night, means that many people suffer from what is called “social jet lag”.24. The underlined word “aligned” in Paragraph 2 means ______.A. matchedB. cooperatedC. conflictedD. shortened25. What does Till Roenneberg’s remark mean?A. The amount of sleep you get counts much.B. An early bird does better than a night owl.C. We are born to have a body clock.D. Most people have neither too big nor too small feet.26. If people suffer from “social jet lag”, they will ______.A. not be as clever as other peopleB. fail to finish their daily tasksC. fail to adjust their body clockD. act as if they were in the wrong time zone27. What is the best title for the passage?A. Body clock and good work habitsB. Late for work? Maybe not your faultC. How to improve your work efficiencyD. Urgent need to change your body clockCNo doubt that humans have widely changed, developed, and exploited much of the natural world for our own ends. But how much of the land surface remains free of our often-harmful influence?In a new study, scientists compared figures from four different sets of data using different kinds of methods and classification systems to answer this question. On average, the researchers say roughly half (48 to 56 percent) of the world’s land shows “low” influence of humans. While the figures may inspire many—stressing the vast expanse of significantly untouched lands that can still be protected through conservation measures—the study also shows just how much of the Earth has already been occupied and used by humans.In fact, only about a quarter (20 to 34 percent) of the planet’s ice-free land surface shows “very low” signs of human influence, the researchers say, and the parts of the planet that we have left alone up until now constitute(构成) some of the least livable places on Earth. In other words, whether through urbanization, forestry, agriculture or other means, humans have applied the most influence on biodiverse land that presented ripe and easy opportunities for immediate human needs; in contrast, roasting deserts in the world’s hottest places, or frozen wastelands in its coldest spots, have been ignored.Even so, the researchers say the results shown here give us a strong, clear marker that we can use to help structure existing and future conservation efforts by preventing disturbance on existing low influenced areas, meanwhile, recovering areas for conservation in land that has already been exploited too much.“The encouraging takeaway from this study is that if we act quickly and decisively(果断地), there is a slim window in which we can still conserve roughly half of the Earth’s land in a relatively untouched state,” says biologist and lead author of the study, Jason Riggio.There’s a chance, right now, to draw a line in the sand, and say “no more”.28. Why was the new study carried out?A. To find out why humans exploit nature.B. To figure out the land free from human influence.C. To prove humans are harmful to nature.D. To clarify the Earth is not occupied by humans completely.29. Which places are influenced most by humans?A. Woodless lands.B. Ice-free lands.C. Places with biodiversity.D. Places with warmth.30. What can we do based on the research?A. Make use of the unlivable area through different means.B. Remove the influence on the previous disturbed area.C. Attempt to have no bad effect on the “untouched” land.D. Reconstruct the overexploited land with forest and agriculture.31. What’s the writer’s attitude towards the untouched land?A. It should be urbanized immediately.B. It should be covered with plants.C. It should be free from humans and animals.D. It should be undisturbed and preserved.DOn Monday, December 5, online retailing(零售) giant Amazon announced the opening of its first physical store. Called Amazon Go, the Seattle-based store that is currently being tested by company employees, learns from regular grocery stores except for one thing—“Just Walk Out” technology. All purchases are handled electronically, which means there are no cashiers, checkouts or lines. Shoppers simply take what they need and leave.To shop at Amazon Go, customers need to open an Amazon account and download the store’s App onto their smartphones. Upon entering the store, they scan a QR code (二维码) with their phones and begin shopping. Every item picked up gets added to the bill automatically. If the customer changes his/her mind, all he/she has to do is return the purchase back on the shelf, and it will be removed from the final bill. Once the customer leaves the store, the amount spent is automatically taken out from the Amazon account and a digital receipt is generated to remind the shopper of the trade.To provide busy customers a pleasant shopping experience, Amazon, which has been working on this concept for four years, plans to keep the store size at a “comfortable” 1,800 square feet. In addition to typical grocery products like bread and milk, the store will stock ready-to-eat breakfast, lunch and dinner options, made by on-site chefs. There will also be chef-designed Amazon Meal boxes for those who prefer to cook the food at home.After years of joint efforts by Amazon staff, Amazon Go finally opened in 2021. Amazon will not provide any insight into the cutting-edge “Just Walk Out” technology. The company website states, “The checkout-free shopping experience is enabled by the same types of technologies used in self-driving cars: computer vision, sensor fusion and deep learning.”32. What is the advantage of Amazon Go over regular grocery stores?A. Store size.B. Shopping speed.C. Product price.D. Parking convenience.33. What is paragraph 2 mainly about?A. Why to download the store’s App.B. How to open an Amazon account.C. How to shop at Amazon Go.D. What to buy at Amazon Go.34. What can we infer from paragraph 3?A. People can shop and eat at Amazon Go.B. Chefs will offer on-site cooking lessons.C. 1,800 square feet is the best size of grocery stores.D. Amazon spent years improving its service.35. What makes possible the checkout-free shopping experience?A. High-technology products.B. The help of the car industry.C. The deep learning method.D. Teamwork by Amazon staff.第二节(共5小题;每小题2分,满分10分)根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。