月七校联考a试卷
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2024届甘肃省兰州名校高三七校联考英语试题试卷注意事项: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。
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第一部分(共20小题,每小题1.5分,满分30分)1.This re search has attracted wide _______ coverage and has featured on BBC television’s Tomorrow’s World. A.message B.information C.media D.data2.Wild swans’ ________ in the area is a good indication of a better environment.A.exhibition B.escapeC.absence D.appearance3.Please don’t make so loud noise.The news of the volcanic eruption in Indonesia ____and I want to listen.A.is broadcast B.is being broadcastC.has been broadcast D.had been broadcast4.It is not surprising that she was elected ______ monitor ;she is ______ very smart girl who has the ability to organize the class well.A./; the B./; aC.a;a D.the;/5.In the office I never seem to have time until after 5:30 p.m.,many people have gone home.A.whose time B.thatC.on which D.by which time6.______ his love, Chris sent his mom a thank-you note on Mother’s Day.A.Expressing B.Expressed C.To express D.Having expressed7.You don’t need an invitation to help others. Give help _____you are asked.A.if B.asC.though D.before8.Around this point ______, which is humorous and full of a strong local flavor.A.the story develops B.does the story developC.develops the story D.the story developed9.The college examination is ________________ easier this year than I have expected.A.fairly B.quiteC.rather D.very10.There will be an endless power of youth supporting the Chinese nation’s rejuvenation_______ the younger generation of the country has ideals , pursuits and shoulders.A.as far as B.so long asC.even if D.as if11.Being happy is a skill that can be learned, and one way to ________ ourselves to be happy is to write down the little things that cheer us up each day.A.convey B.appeal C.train D.attempt12.Playing with their peers, children learn to and not do exactly what they want to do.A.compromise B.competeC.contribute D.construct13.—Bob says he will draw lessons from his failure and continue to try.—I’m delighted that he ________ take that view.A.will B.may C.should D.could14.At school, it is essential that every child ______ equally regardless of family background.A.treating B.treated C.be treated D.is treated15.---Let's walk to that village together.---__________. How can we two girls do that in the dark?A.I agree with you. B.That's a good point.C.Y ou must be joking!D.That's not your opinion!16.. I was embarrassed to admit that yesterday I ______ a serious error.A.acted B.committed C.performed D.completed17.—I will pick you up at 7 o’clock tomorrow morning. Is that all right?—________. See you then.A.I’d love to.B.That’s settled.C.It’s up to you D.My pleasure18.— How do you think I can make up with Jack?— Set aside _______ you disagree and try to find _______ you have in common.A.what; what B.what; where C.where; what D.where; whether19.________ your blog, I would have written back two days ago.A.If I read B.Should I readC.Had I read D.If I could have read20.—When did you get to know your girlfriend?—It was in 2015 ________ she was working as a volunteer in Africa.A.that B.whichC.when D.then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。
辽宁省七校2024-2025学年高一上学期10月联考模拟练习数学试卷(考试时间:120分钟 试卷总分:150分)一、单选题(本大题共8小题,共40分)1.已知命题,,则其否定为( )A .,B .,C .,D .,2.已知集合A={﹣2,﹣1,0,1,2,3},B={y|y=|x|﹣3,x∈A},则A∩B=( )A .{﹣2,1,0}B .{﹣1,0,1,2}C .{﹣2,﹣1,0}D .{﹣1,0,1}3.已知集合,,则集合( )A .B .C .D .4.已知集合,则( )A .B .C .D .5.已知全集,集合,则( )A .B .C .D .6.已知集合,,且,则的所有取值组成的集合为( )A .B .C .D .7.是的( ).A .充分非必要条件B .必要非充分条件C .充要条件D .既非充分又非必要条件8.已知集合,若对于任意,以及任意实数,满足:p x ∀∈R 0x x +≥x ∀∈R 0x x +<x ∃∈Z 0x x +<x ∃∈R 0x x +<x ∃∈R 0x x +≤{}N |30A x x =∈-≤{}2Z |20B x x x =∈+-≤A B = {}1{}0,1{}0,1,2{}1,2{}{}21,2,3,30A B x x x ==-<A B =∅ A B⊆{}1,2A B = {}0,1,2,3A B ⋃={}33U x x =-<<{}01A x x =<<U A =ð()1,3()()3,01,3- ()3,0-(][)3,01,3-⋃{}1,4,A x ={}21,B x =A B B = x {}2,0-{}0,2{}2,2-{}2,0,2-12x y >⎧⎨>⎩32x y xy +>⎧⎨>⎩(){},,,R I a a x y x y ⊆=∈,m n I ∈[]0,1λ∈,则称集合I 为“封闭集”.下列说法正确的是( )A .集合为“封闭集”B .集合为“封闭集”C .若是“封闭集”,则A ,B 都是“封闭集”D .若A ,B 都是“封闭集”,则也一定是“封闭集”二、多选题(本大题共3小题,共18分)9.下列关系中正确的是( )A .0∈NB .π∈QC .D .10.下列说法正确的是( )A .“”是“”的充分不必要条件B .“”是“”的必要不充分条件C .“对任意一个无理数,也是无理数”是真命题D .命题“,”的否定是“,”11.已知,且,则( )A .B .C .D .三、填空题(本大题共3小题,共15分)12.命题“”的否定为 .13.已知关于的不等式的解集是,则不等式的解集为14.(1)已知集合,,则满足条件的集合的个数为 ;(2)已知集合,.若,则的取值范围是 ;(3)在(2)中,若“”改为“”,其他条件不变,则的取值范围()1m n I λλ+-∈(){}3,,A a a x y y x ==≥(){},,ln B a a x y y x ==≤A B ⋂A B 0∈∅{}0∅⊆22ac bc >a b >0xy >0x y +>x 2x R x ∃∈210x +=R x ∀∈210x +≠a b c >>20a b c ++=0,0a c ><2c aa c +<-0a c +>21a ca b+<-+2010x x x ∀>+->,x 20ax bx c ++<1|22x x x ⎧⎫<->-⎨⎩⎭或20cx bx a -+>2{|320,R}A x x x x =-+=∈{|05,}B x x x =<<∈N A C B ⊆⊆C ()(){|130}A x x x =+-<{|}B x m x m =-<<A B ⊆m A B ⊆B A ⊆m是 .四、解答题(本大题共5小题,共77分)15.已知集合(1)若,求实数m 的取值范围.(2)命题q :“,使得”是真命题,求实数m 的取值范围.16.(1)已知,求的取值范围.(2)比较与的大小,其中.17.已知函数(1)解不等式;(2)若存在实数使不等式对任意实数恒成立,求的取值范围.18.已知函数.(1)求不等式的解集;(2)设的最小为m ,若正实数a ,b ,c 满足,求的最小值.19.已知集合,,其中,且.若,且对集合A 中的任意两个元素,都有,则称集合A 具有性质P .(1)判断集合是否具有性质P ;并另外写出一个具有性质P 且含5个元素的集合A ;(2)若集合具有性质P .①求证:的最大值不小于;②求n 的最大值.{}{}34,211A x x B x m x m =-≤<=-≤≤+B A ⊆x A ∃∈x B ∈1423x ,y -<<<<x y -2(1)(1)x x x -++2(1)(1)x x x +-+R x ∈()3326f x x x =+--()4f x x ≥-()f x ()f x a b c m ++=-222a b cc a b++11100,M k k k *⎧⎫=≤≤∈⎨⎬⎩⎭N 且{}12,,,n A a a a = n *∈N 2n ≥A M ⊆,,i j a a i j ≠130i j a a -≥11111,,,,34567⎧⎫⎨⎬⎩⎭{}12,,,n A a a a = ()i j a a -130n -参考答案:题号12345678910答案C C B C D D A B AD AD 题号11 答案ABD12.13.【详解】因为的解集是,所以为的两根,且,即因此,即不等式的解集为.14. 4 解;(3)由(2),结合,分和,两种情况讨论,列出不等式组,即可求解.【详解】解:(1)由集合,,则满足条件的集合可能为,所以满足条件的集合的个数为4个;(2)由集合,,因为,则满足,解得,即实数的取值范围为;(3)由(2)知:集合,,当时,若,则满足,解得;2010x x x ∃>+-≤,122⎛⎫⎪⎝⎭,20ax bx c ++<1|22x x x ⎧⎫<->-⎨⎬⎩⎭或122--,20ax bx c ++=0a <1152(),2,222c b c a b aa a =-⨯--=--∴==22255100102222a cx bx a ax x a x x x -+>⇒-+>⇒-+<⇒<<20cx bx a -+>122⎛⎫⎪⎝⎭[)3,+∞(],1-∞B A ⊆B ≠∅B =∅2{|320,R}{1,2}A x x x x =-+=∈={}{|05,}1,2,3,4B x x x =<<∈=N A C B ⊆⊆C {}{}{}{}1,2,1,2,3,1,2,4,1,2,3,4C ()(){|130}{|13}A x x x x x =+-<=-<<{|}B x m x m =-<<A B ⊆13m m -≤-⎧⎨≥⎩3m ≥m [)3,+∞{|13}A x x =-<<{|}B x m x m =-<<B ≠∅B A ⊆013m m m >⎧⎪-≥-⎨⎪≤⎩01m <≤当时,即时,此时满足,综上可得,实数的取值范围为.故答案为:4个;;.15.(1);(2).【详解】解:(1)①当B 为空集时,成立.②当B 不是空集时,∵,,∴综上①②,.(2),使得,∴B 为非空集合且.当时,无解或,,∴.16.(1); (2).【详解】(1)解:由不等式,可得,因为,所以,即的取值范围为.(2)解:由,,因为,所以,故.17.(1);(2).【详解】试题分析:(1)零点分段去绝对值求解不等式即可;(2)由(1)得的最小值为,由题意知对任意的恒成立,又,只需即可.试题解析:(1)令B =∅0m ≤B A ⊆m (],1-∞[)3,+∞(],1-∞1m ≥-[4,2]-121,2m m m +<->B A ⊆12121314m m m m +≥-⎧⎪-≥-⎨⎪+<⎩12m -≤≤1m ≥-x A ∃∈x B ∈,121,2A B m m m ≠∅+≥-≤ A B =∅ 2142m m -≥⎧⎨≤⎩132m m +<-⎧⎨≤⎩4m <-,[4,2]A B m ≠∅∈- ()4,2-22(1)(1)(1)(1)x x x x x x -++<+-+23y <<32y -<-<-14x -<<42x y -<-<x y -()4,2-23(1)(1)1x x x x -++=-23(1)(1)1x x x x +-+=+331(1)20x x --+=-<3311x x -<+22(1)(1)(1)(1)x x x x x x -++<+-+33,)(,)44(-∞-⋃+∞()g x 52-由解得所以不等式的解集为(2)由(1)可知的最小值为则的最小值为由题意知对任意的恒成立又当且仅当时取等号所以只需故的取值范围是18.(1)(2)8【分析】(1)通过讨论,化简绝对值不等式求其解;(2)根据(1)求出,再利用基本不等式求的最小值.【详解】(1)当时,原不等式等价于,解得;当时,原不等式等价于,解得;当时,原不等式等价于,解得.综上所述,原不等式的解集是.33,),44⎛⎫-∞-⋃+∞ ⎪⎝⎭(51,,24⎛⎤⎡⎫-∞--+∞ ⎪⎥⎢⎝⎦⎣⎭x m 222a b c c a b++1x ≤-()33264x x x -++--≥52x ≤-13x -<<33264x x x ++--≥134x -≤<3x ≥()33264x x x +---≥3x ≥51,,24⎛⎤⎡⎫-∞--+∞ ⎪⎥⎢⎝⎦⎣⎭(2)因为,所以,则.因为,,,所以,即,当且仅当时等号成立,故的最小值为8.19.(1)不具有性质,(2)①证明见解析,②n 的最大值为10【分析】(1)根据性质满足的条件可验证,不符合要求即可判断,根据性质满足的要求即可写出集合;(2)根据,由累加法即可得最大项与最小项的关系;【详解】(1)因为,故该集合不符合性质;符合性质的集合(2)①,不放设,则,故,故的最大值不小于;②要使最大,,不妨设,则,又,,所以,所以,()9,153,139,3x x f x x x x x --≤-⎧⎪=--<<⎨⎪+≥⎩()()min 18f x f =-=-8a b c ++=22a c a c +≥22b a b a +≥22c b c b +≥()222216a b c a b c a b c c a b +++++++=≥2228a b c c a b++≥83a b c ===222a b c c a b++11111,,,,34567⎧⎫⎨⎬⎩⎭P 1111=12345A ⎧⎫⎨⎬⎩⎭,,,,P 1111=674230-<P A 130i j a a -≥1111=674230-<P P 1111=12345A ⎧⎫⎨⎬⎩⎭,,,,{}12,,,n A a a a = 123n a a a a <<<< ()130i j a a i j -≥>()()()1112211=30n n n n n a a a a a a a a n ------+-++-≥()i j a a -130n -n {}12,,,n A a a a = 123n a a a a >>>>L (),1,2,3,4,...,130k n n ka a k n --≥=-A M ⊆111123n >>>⋅⋅⋅>1k a k≤()1,1,2,3,4,...,130k n n k a a k n k-≤-<=-所以,又时等号成立,当或6时,,所以,当时,符合题意,所以最大值为10.()130,,1,2,3,4,...,130n k n k k n k k-<<+=-30k k+≥()5,6k 5n =3011k k+=11n <10n =111111111=1,,234568111845A ⎧⎫⎨⎩⎭,,,,,,,n。
贵州省贵阳市七校联考2023-2024学年高三上学期开学英语试题一、短对话1.Where are the speakers going next?A.To a flower shop.B.To a clothing shop.C.To a bakery.2.What does the woman do?A.An architect.B.A teacher.C.A receptionist.3.How will Helen travel to New York?A.By plane.B.By car.C.By train.4.Where probably are the speakers?A.In a pet hospital.B.In a park.C.In a zoo.5.What is the weather like now?A.Sunny.B.Cloudy.C.Rainy.二、长对话听下面一段较长对话,回答以下小题。
6.In which place are half of Betty’s grandfather’s books stored?A.A house of his friend.B.A public library.C.Betty’s house.7.How does the man sound in the end?A.Surprised.B.Excited.C.Anxious.听下面一段较长对话,回答以下小题。
8.What does Lily suggest Mr. Stenson doing?A.Using the pesticide.B.Changing the crop.C.Watering the fields.9.What do we know about Lily’s uncle?A.He often shares his products.B.He lives far from Lily.C.He is good at farming.听下面一段较长对话,回答以下小题。
2024年湖北省武汉市武昌区七校联考中考模拟数学试题一、单选题1.3的相反数是( )A .3B .3-C .13D .13- 2.下面运动标识图案中,是轴对称图形的是( )A .B .C .D .3.“掷一枚质地均匀的骰子,向上一面点数为6”这个事件是( )A .随机事件B .确定事件C .不可能事件D .必然事件 4.用4个完全相同的小正方体搭成如图所示的几何体,该几何体的( )A .主视图和左视图相同B .主视图和俯视图相同C .左视图和俯视图相同D .三种视图都相同5.计算()342a 的结果是( ) A .72a B .76a C .78a D .128a6.随着科技发展,骑行共享单车这种“低碳”生活方式已融人人们的日常生活.如图是共享单车车架的示意图,线段,,AB CE DE 分别为前叉、下管和立管(点C 在AB 上),EF 为后下叉.已知,AB DE AD EF ∥∥,67,137BCE CEF ∠=︒∠=︒,则ADE ∠的度数为( )A .43︒B .53︒C .67︒D .70︒7.小明用刻度不超过100℃的温度计,估计某种食用油的沸点温度....(沸腾时的温度).他将该食用油倒入锅中均匀加热,每隔10s 测量一次油温,得到如下数据:当加热100s 时,油沸腾了.可以估计该食用油的沸点温度是( )A .170℃B .190℃C .210℃D .230℃8.从367,3.1415926两个数都是无理数的概率是( ) A .12 B .13 C .14 D .169.如图,点A ,B 是半径为2的⊙O 上的两点且AB = )A .圆心O 到AB B .在圆上取异于A ,B 的一点C ,则ABC V 面积的最大值为C .取AB 的中点C ,当AB 绕点O 旋转一周时,点C 运动的路线长为πD .以AB 为边向上作正方形,与⊙O 的公共部分的面积为 43π 10.已知点(),n n a 在函数817y x =+的图象上,且n 为正整数,12n n S a a a =+++L ,当2020n S =时,n 的值为( )A .18B .19C .20D .21二、填空题11.世界文化遗产长城总长约6700 000m ,用科学记数法表示这个数为m . 12.写出一个图象位于第二、第四象限的反比例函数的解析式.13.化简2221648x x y x y---=. 14.某中学九年级数学活动小组应用解直角三角形的知识,测量学校一教学楼的高度.如图,小明在A 处测得教学楼CD 的顶部的仰角为30︒,向前走20m 到达E 处,测得教学楼CD 的顶部的仰角为45︒,已知小明的身高AB 为1.6m (眼睛到头顶的距离可忽略不计),则教学楼CD 的高度约m ((结果精确到0.1m 1.73≈).15.抛物线2y ax bx c =++(a ,b ,c 为常数,0a ≠)经过()1,0A ,()3,0B ,且,3,2C m ⎛⎫ ⎪⎝⎭三点,且1m <-,下列四个结论:①0abc <;②若点()11,C y -,2)2π(,D y +在该抛物线上,则12y y >;③当13x -≤≤时,y 的取值范围是124b y b ≤≤-;④()241ac b +<.其中正确结论的序号是.16.如图,矩形ABCD 中,1AB =,2AD =,连接BD ,M 、N 分别为边AD 、BC 上的动点,且MN BD ⊥于点P ,连接DN 、BM ,则DN BM +的最小值为 .三、解答题17.解不等式组:2113522x x x-⎧≥-⎪⎨⎪->-⎩,并写出它的所有整数解.18.如图,四边形ABCD 是平行四边形,AE 过BC 中点O 且交DC 的延长线于点E .(1)求证:AOB EOC V V ≌;(2)连接AC ,BE ,请添加一个条件,使四边形ABEC 为矩形.(不需要说明理由) 19.为积极落实“双减”政策,让作业布置更加精准高效,某市教育部门对友谊中学九年级部分学生每天完成作业所用的时间进行调查,根据图中信息解答下列问题:(1)本次共调查了名学生.(2)本次抽查学生每天完成作业所用时间的中位数为;众数为.(3)该校九年级有1700名学生,请你估计九年级学生中,每天完成作业所用时间为2小时的学生约有多少人?20.如图,PA 、PB 是O e 的切线,AB 、是切点,AC 是O e 的直径,连接OP ,交O e 于点D ,交AB 于点E .(1)求证:BC OP ∥;(2)若E 恰好是OD 的中点,且四边形OAPB的面积是21.如图是由小正方形组成的88⨯网格,每个小正方形的顶点叫做格点,图中B ,C 都是格点.仅用无刻度的直尺在给定网格中完成画图.(1)请在BC 上方找到点A ,使ABC V 是一个以BC 为斜边的等腰直角三角形(2)请在线段BC 上找一点D 使2BD CD =(3)已知E ,F 分别为AB ,AC 上两动点,且AE AF =,为探究E 点在何处时DE DF +最小,请你完成如下步骤:①将点D 绕A 点逆时针旋转90︒得D ¢,并连接DD '交AC 于F ;②再在AB 上找到点E 使AE AF =即可确定E 点位置.22.某工厂生产A ,B 两种型号的环保产品,A 产品每件利润200元,B 产品每件利润500元,该工厂按计划每天生产两种产品共50件,其中A 产品的总利润比B 产品少4000元.(1)求该厂每天生产A 产品和B 产品各多少件;(2)据市场调查,B 产品的需求量较大,该厂决定在日总产量不变的前提下增加B 产品的生产,但B 产品相比原计划每多生产一件,每件利润便降低10元.设该厂实际生产B 产品的数量比原计划多x 件,每天生产A ,B 产品获得的总利润为w .①当x 为何值时,每天生产A ,B 产品获得的总利润恰好为16240元?②若实际生产B 产品的数量不少于A 产品数量的1.2倍,求总利润w 的最大值. 23.(1)【问题提出】如图1,在Rt ABC △中,90ACB ∠=︒,30BAC ∠=︒,点D 为边BC 上一点,过D 作DE AB ⊥于E 点,连接AD ,F 为AD 的中点,连接CE ,CF ,EF ,则CEF △的形状是______ (2)【问题探究】如图2,将图1中的DEB V 绕点B 按逆时针方向旋转,使点D 落在AB 边上,试判断CE ,CF ,EF 的数量关系,并说明理由;(3)【拓展延伸】若BE m =,45BD BC =,将DEB V 绕点B 按逆时针方向旋转,当点D 在线段AE 上时,直接写出线段CF 的长______(用含m 的式子表示).24.如图,抛物线2y ax bx c =++与x 轴交于A ,B 两点,与y 轴交于点C ,顶点为D .其中()3,0A -,()1,4D --.(1)直接写出该抛物线的解析式;(2)如图(1),在抛物线上找点E 使CBE OAD ∠=∠,求点E 的横坐标;(3)平移抛物线使其顶点为原点,如图2,作直线1y kx =+交抛物线于A ,B 两点,若直线OA ,OB 分别交直线22y x =-于M ,N 两点,当k 为何值时,线段MN 长度最小,求出k 的值.。
七校联考卷答案一、选择题(每题1分,共5分)A. 教师的教学方法B. 学生的学习过程C. 家长的教育观念D. 学校的管理制度2. 在我国,新课程改革的核心是?()A. 知识传授B. 能力培养C. 情感态度D. 综合素质A. 个性化教学B. 集体教学C. 自主学习D. 分层教学A. 多媒体教学B. 网络教学C. 课堂教学D. 实验教学A. 提高教师待遇B. 减轻学生课业负担C. 实施素质教育D. 推进义务教育均衡发展1. 教育心理学研究的是教育现象中的心理规律。
()2. 新课程改革强调教师的主导地位。
()3. 班级授课制有利于发挥学生的主体性。
()4. 教育技术只包括现代信息技术。
()5. 素质教育就是全面发展教育。
()三、填空题(每题1分,共5分)1. 教育心理学研究的三大要素是:__、__、__。
2. 新课程改革的三维目标是:__、__、__。
3. 班级授课制的优点有:__、__、__。
4. 教育技术的核心是:__。
5. 素质教育的根本宗旨是:__。
四、简答题(每题2分,共10分)1. 简述教育心理学的研究任务。
2. 新课程改革对教师提出了哪些要求?3. 简述班级授课制的局限性。
4. 教育技术在教学中的应用有哪些?5. 简述素质教育的内涵。
五、应用题(每题2分,共10分)1. 结合实际,谈谈如何运用教育心理学原理提高学生的学习兴趣。
2. 请设计一个新课程改革背景下的教学活动案例。
3. 分析班级授课制在实际教学中的利与弊。
4. 请举例说明教育技术在教学中的应用效果。
5. 结合实际,谈谈如何在学校教育中实施素质教育。
1. 分析教育心理学在我国教育改革中的作用。
2. 分析新课程改革对基础教育的影响。
七、实践操作题(每题5分,共10分)1. 设计一个教育心理学实验,以验证某个教学理论。
2. 针对某一学科,设计一个新课程改革背景下的课堂教学方案。
八、专业设计题(每题2分,共10分)1. 设计一个针对小学低年级学生的注意力训练方案。
武昌区七校联考2023-2024学年上学期期中九年级物理试卷一、选择题(本大题有10小题,每小题只有一个选项符合题意,每小题3分,共30分)1.如图所示是一款普通的无线蓝牙耳机,关于此耳机估测合理的是()A.单只耳机的质量为1kgB.耳机内置发声单元直径5cmC.耳机单次充满能正常工作4小时D.耳机的工作电流为2A2.如图所示,这是小明所画的冰熔化时温度随时间变化的图像。
下列说法正确的是()A.由图可知,冰的比热容大于水的比热容B.由图可知,冰的比热容小于水的比热容C.BC段中,使冰熔化的唯一方法只有热传递D.BC段中,由于温度不变,因此内能不变3.汽车是现代生活中最常见的一种交通工具,如图甲、乙分别是某汽油机的某冲程及能量流向图。
下列有关说法正确的是()A.甲图是压缩冲程,活塞对气缸内的气体做功,气体的温度升高B.由乙图可知该汽油机的效率是30%C.汽车尾气中的“汽油味”越浓燃料燃烧得越不充分,这会降低燃料的热值D.为节能冬天汽车都会利用尾气中的余热给车内供暖,该举措大大提高了燃料的热值4.如图所示,对其中所涉及的物理现象分析不正确的是()A.图甲:用金属棒连接带负电的验电器A与不带电的验电器B,金属棒中的瞬时电流方向为B到A B.图乙:N95口罩的中间层为多孔结构的熔喷布,熔喷布在生产过程中通过处理得到了大量的电子,所以熔喷布带负电C.图丙:甲、乙两轻质小球靠近时相互吸引,说明两球一定带异种电荷D.图丁:擦拭过的镜面很容易粘上细小的灰尘,主要是因为带电体能够吸引轻小物体5.共享电单车可以在手机上进行还车操作,步骤如下:①若未使用头盔,头盔与车筐连接完好(S2闭合),则可以进行一键还车(S1闭合),电磁锁启动;②若使用了头盔,则需要先归还头盔,再进行一键还车操作。
以下电路符合要求的是()A.B.C.D.6.发光二极管的电流从“+”极流入时二极管能通电且发光,当电流从“﹣”极流入时二极管不能发光。
重庆市主城区七校联考2025届化学高一上期末联考模拟试题考生须知:1.全卷分选择题和非选择题两部分,全部在答题纸上作答。
选择题必须用2B铅笔填涂;非选择题的答案必须用黑色字迹的钢笔或答字笔写在“答题纸”相应位置上。
2.请用黑色字迹的钢笔或答字笔在“答题纸”上先填写姓名和准考证号。
3.保持卡面清洁,不要折叠,不要弄破、弄皱,在草稿纸、试题卷上答题无效。
一、选择题(共包括22个小题。
每小题均只有一个符合题意的选项)1、由下列实验及现象,推出的相应结论正确的是A.A B.B C.C D.D2、下列说法错误的是:A.钠在空气燃烧时先熔化,再燃烧,最后所得的产物是Na2O2B.铝因在空气中形成了一薄层致密的氧化膜,保护内层金属,故铝不需特殊保护C.铝制品在生活中非常普通,是因为铝非常不活泼D.铁因在潮湿的空气中形成的氧化物疏松,不能保护内层金属3、下列气体中,能用固体氢氧化钠做干燥剂的是( )A.氯化氢B.氧气C.二氧化碳D.二氧化硫4、下列关于SO2的说法正确的是A.SO2气体通入滴有酚酞的NaOH溶液中,红色褪去,说明SO2具有漂白性B.等物质的量的SO2和Cl2混合通入品红溶液中,能使红色褪去C.SO2气体通入溴水中,溴水的颜色褪去,说明SO2具有漂白性D.二氧化硫的排放会导致酸雨的产生5、垃圾分类指按一定规定或标准将垃圾分类储存,分类投放和分类搬运,从而转变成公共资源的一系列活动的总称,在垃圾分类处理和利用的标志中如图属于()A.厨余垃圾标志B.危险废物标志C.可回收物标志D.其他垃圾标志6、水泥和普通玻璃都是常见的硅酸盐产品。
下列说法中不正确的是( )A.生产水泥和普通玻璃的每一种原料都含有硅B.水泥、普通玻璃都是混合物C.生产水泥和玻璃都必须用石灰石D.用纯净的石英制成石英玻璃,它的膨胀系数小,常用来制造耐高温的化学仪器7、已知还原性:H2SO3(SO2) >I->Fe2+>NO,据此判断下列反应不能发生的是A.H2SO3+I2+H2O=2HI+ H2SO4B.NO+SO3=NO2+SO2C.2FeCl3+2HI= 2FeCl2+2HCl+I2D.3 FeCl2+4HNO3=2FeCl3+NO↑+2H2O+Fe(NO3) 3 8、下列实验所选装置不合理的是()A.浓缩硝酸钾溶液,应选择装置B.粗盐的提纯,应用到装置C.从碘水中分离出I2,应选择装置D.分离汽油和水,应选择装置9、下列说法不正确的是A.生物炼铜就是利用某种细菌将难溶性的硫化铜直接转化为铜B.根据纤维在火焰上燃烧产生的气味,确定该纤维是否为蛋白质纤维C.用原子吸收光谱仪可以确定物质中含有哪些金属元素D.分子筛常用于分离、提纯气体或液体混合物,也可作干燥剂、离子交换剂和催化剂10、甲、乙两烧杯中各盛有100 mL 3 mol·L-1的盐酸和氢氧化钠溶液,向两烧杯中分别加入等质量的铝粉,反应结束后生成的气体的体积比为甲∶乙=1∶2,则加入铝粉的质量为()A.5.4 g B.3.6 g C.2.7 g D.1.8 g11、常温下,下列各组离子在指定溶液中可能大量共存的是A.与铝反应产生氢气的溶液中:Na+、K+、CO32-、OH−B.使酚酞试液变红的溶液中:NH4+、Na+、HCO3-、NO3-C.漂白粉溶液中:K+、Na+、I−、CO32-D.FeCl3溶液中:K+、Na+、SO42-、SCN−12、常温下,在溶液中可发生以下反应:①2Fe2++ Br2=2Fe3++ 2Br-,②2Br-+ Cl2=Br2+ 2Cl-,③2Fe3++ 2I-= 2Fe2++ I2;由此判断下列说法错误的是A.铁元素在反应①中被氧化,在③中被还原B.反应②中当有1 mol Cl2被还原时,有2 mol Br-被氧化C.氧化性强弱顺序为:Cl2 > I2 > Br2 > Fe3+D.还原性强弱顺序为:I-> Fe2+ > Br-> Cl-13、下图是10ml 量筒的一部分,数字XY之间相差1ml,若X=5,则量筒所盛液体的体积是A.5.7 ml B.4.4 ml C.4.3 ml D.6.3 ml14、下列离子方程式书写正确的是A.向氯化亚铁溶液中通入氯气:Fe2++Cl2=Fe3++2Cl-B.将氯气通入冷的氢氧化钠溶液中:Cl2+2OH-=Cl-+ClO-+H2OC.铝片与氢氧化钠溶液反应:Al+2OH-=AlO2-+H2↑D.金属铝溶于盐酸中:Al+2H+=Al3++H2↑15、下列转化过程不能一步实现的是A.Al(OH)3→Al2O3B.Al2O3→Al(OH)3C.Al→AlCl3D.Al→NaAlO216、下列离子方程式中,错误的是()A.氢氧化钡溶液和稀硫酸反应:Ba2++OH-+H++SO42-=BaSO4↓+H2OB.纯碱溶液和过量硝酸反应:CO32-+2H+=H2O+CO2↑C.硝酸银溶液与食盐水反应:Ag++Cl-=AgCl↓D.醋酸溶液与氨水反应:CH3COOH+NH3·H2O=NH4++CH3COO-+H2O17、下列物质间的转化一定需要加入氧化剂才能实现的是()A.C→CO2B.H2O2→O2C.SO2→S D.KMnO4→MnO218、美国“9.11”恐怖袭击事件给纽约带来了一场严重的环境灾难--石棉污染,使吸入石棉纤维者易患肺癌。
重庆市七校联盟2024年高三年级下学期第二次月考试题注意事项1.考生要认真填写考场号和座位序号。
2.试题所有答案必须填涂或书写在答题卡上,在试卷上作答无效。
第一部分必须用2B 铅笔作答;第二部分必须用黑色字迹的签字笔作答。
3.考试结束后,考生须将试卷和答题卡放在桌面上,待监考员收回。
一、单项选择题:本题共6小题,每小题4分,共24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、如图所示,水平地面上有一个由四块完全相同石块所组成拱形建筑,其截面为半圆环,石块的质量均为m。
若石块接触面之间的摩擦忽略不计,则P、Q两部分石块之间的弹力为()A.2mg B.22mg C.22mg D.2mg2、下列说法正确的是()A.牛顿第一定律并不是在任何情况下都适用的B.根据F=ma可知,物体的加速度方向一定与物体所受拉力F的方向一致C.绕地球飞行的宇航舱内物体处于漂浮状态是因为没有受到重力作用D.人在地面上起跳加速上升过程中,地面对人的支持力大于人对地面的压力3、据《世说新语》记载,晋明帝司马昭在回答“汝意谓长安与日孰远”时,一句“举目望日,不见长安”惊愕群臣。
我们生活的2020年初的地球,需经8分13秒才能看见太阳的光芒,但我们离长安却隔了将近1111年。
距研究者发现,地球与太阳的距离不断缩小,月球却在逐渐远去。
下列说法正确的是A.在2020初,地日距离约为150万千米B.倘若月球彻底脱离了地球,则它受到地球对它的引力为0C.与长安城中的人相比,我们的“一个月”在实际上应略长于他们的D.与长安城中的人相比,我们的“一年”在实际上应略长于他们的4、如图所示,在粗糙的水平面上放一质量为2kg的物体,现用F=8N的力,斜向下推物体,力F与水平面成30角,物体与水平面之间的滑动摩擦系数为μ=0.5,则A.物体对地面的压力为24NB.物体所受的摩擦力为12NC.物体加速度为2m s6/D.物体将向右匀速运动5、一定质量的理想气体,从状态M开始,经状态N、Q回到原状态M,其p-V图象如图所示,其中QM平行于横轴,NQ平行于纵轴.则()A.M→N过程气体温度不变B.N→Q过程气体对外做功C.N→Q过程气体内能减小D.Q→M过程气体放出热量6、如图所示,A,B质量均为m,叠放在轻质弹簧上(弹簧上端与B不连接,弹簧下端固定于地面上)保持静止,现对A施加一竖直向下、大小为F(F>2mg)的力,将弹簧再压缩一段距离(弹簧始终处于弹性限度内)而处于静止状态,若突然撤去力F,设两物体向上运动过程中A、B间的相互作用力大小为F N,则关于F N的说法正确的是(重力加速度为g)()A.刚撤去外力F时,B.弹簧弹力等于F时,C.两物体A、B的速度最大时,F N=2mgD.弹簧恢复原长时,F N=mg二、多项选择题:本题共4小题,每小题5分,共20分。
天津市七校联考2025届高三下学期联合考试数学试题注意事项1.考生要认真填写考场号和座位序号。
2.试题所有答案必须填涂或书写在答题卡上,在试卷上作答无效。
第一部分必须用2B 铅笔作答;第二部分必须用黑色字迹的签字笔作答。
3.考试结束后,考生须将试卷和答题卡放在桌面上,待监考员收回。
一、选择题:本题共12小题,每小题5分,共60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.已知函数()sin f x a x x =的图像的一条对称轴为直线56x π=,且12()()4f x f x ⋅=-,则12x x +的最小值为( ) A .3π-B .0C .3πD .23π 2.在260202x y x y x y --≤⎧⎪-+≥⎨⎪+≥⎩条件下,目标函数()0,0z ax by a b =+>>的最大值为40,则51a b +的最小值是( ) A .74 B .94 C .52 D .23.已知函数()ln a f x x a x=-+在[]1,e x ∈上有两个零点,则a 的取值范围是( ) A .e ,11e ⎡⎤-⎢⎥-⎣⎦B .e ,11e ⎡⎫⎪⎢-⎣⎭C .e ,11e ⎡⎫-⎪⎢-⎣⎭D .[)1,e - 4.已知抛物线2:4C y x =和点(2,0)D ,直线2x ty =-与抛物线C 交于不同两点A ,B ,直线BD 与抛物线C 交于另一点E .给出以下判断:①以BE 为直径的圆与抛物线准线相离;②直线OB 与直线OE 的斜率乘积为2-;③设过点A ,B ,E 的圆的圆心坐标为(,)a b ,半径为r ,则224a r -=.其中,所有正确判断的序号是( )A .①②B .①③C .②③D .①②③5.已知正四面体A BCD -外接球的体积为,则这个四面体的表面积为( )A.B.C.D.6.关于x 的不等式0ax b ->的解集是(1,)+∞,则关于x 的不等式()(3)0ax b x +->的解集是( ) A .(,1)(3,)-∞-+∞ B .(1,3)-C .(1,3)D .(,1)(3,)-∞+∞7.已知集合A ={x |–1<x <2},B ={x |x >1},则A ∪B =A .(–1,1)B .(1,2)C .(–1,+∞)D .(1,+∞)8.在ABC 中,角、、A B C 的对边分别为,,a b c ,若tan 2sin()a B b B C =+.则角B 的大小为( ) A .π3 B .π6 C .π2 D .π49.定义在R 上的奇函数()f x 满足()()330f x f x --+-=,若()11f =,()22f =-,则()()()()1232020f f f f ++++=( ) A .1- B .0C .1D .2 10.已知12,F F 是双曲线222:1(0)x C y a a-=>的两个焦点,过点1F 且垂直于x 轴的直线与C 相交于,A B 两点,若2AB =,则2ABF ∆的内切圆半径为( )A .23B .33C .323D .23311.设n S 是等差数列{}n a 的前n 项和,且443S a =+,则2a =( )A .2-B .1-C .1D .2 12.设,则"是""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 二、填空题:本题共4小题,每小题5分,共20分。
2022--2023学年第二学期高一第三次七校联考化学试卷试卷满分:100分考试时长:75分钟可能用到的相对原子质量:H-1C-12N-14O-16S-32Fe-56Ba-137一、单项选择题:共14题,每题3分,共42分。
每题只有一个选项最符合题意。
1.2022年11月29日,神舟十五号载人飞船成功发射,我国6名航天员首次实现太空会师。
下列说法错误的是A.活性炭可用于吸附航天舱中异味B.Na 2O 2可用作宇航乘组的供氧剂C.SiO 2可用作航天器的太阳能电池板D.镁铝合金可用作飞船零部件材料2.下列有关化学用语表示正确的是A.中子数为8的氮原子:B.Al 3+结构示意图:C.NH 3的电子式:D.CH 4的空间填充模型:3.下列变化过程不属于金属冶炼的是A.电解熔融氯化钠B.铁在氧气中燃烧C.铁矿石与焦炭在高温下反应D.铝粉与二氧化锰在高温下反应4.“嫦娥五号”返回器携带月球样品在内蒙古四子王旗预定区域安全着陆。
这标志着我国已具备地月往返的能力,探月工程“绕、落、回”三步走规划完美收官。
“嫦娥五号”中使用了大量合金。
下列有关金属或合金的说法中不正确的是A.生铁不属于合金B.一般合金的熔点比各成分金属的低C.镍铬铝铜合金具有很高的电阻率,可用于制备电路中的精密元件D.改变原料的配比、生成合金的条件,可以得到具有不同性能的合金5.实验室制取少量NH 3并探究其性质。
下列装置不能达到实验目的的是A.用装置甲制取NH 3B.用装置乙收集NH 3C.用装置丙检验NH 3水溶液呈碱性D.用装置丁吸收多余的NH 36.将铁粉和硫粉充分混合后加热,待反应一发生即停止加热,反应仍可持续进行,直至反应完全生成新物质硫化亚铁。
此现象说明A.硫单质具有很强的氧化性B.该反应是放热反应C.铁粉和硫粉在常温下容易发生反应D.生成物硫化亚铁的总能量高于反应物铁粉和硫粉的总能量7.某反应由两步反应ABC 构成,它的反应能量曲线如图,下列叙述正确的是A.三种化合物中C 最稳定B.两步反应均为吸热反应C.A 与C 的能量差为E 4D.AB 反应,反应条件一定要加热请阅读下列材料,回答8~9题:铁放置时间长了就会生锈。
2012年秋学期七校联合阶段性目标检测 初三英语试卷 (试卷满分:120分,考试时间:100分钟,考试形式:闭卷,命题单位:周集中学) 试卷I (选择题,共55分) 一、 单项选择(共10小题,每小题1分,计10分) ( )1. They tried __________,but _____________nothing. A. to listen ,listened B. listening ,heard C. to listen ,heard D. to hear, heard ( )2. We all think ____ was kind ____ her to give her seat to an old lady. A. that; for B. it; for C. it; of D. that; of ( )3. I'd like to_______ David as the new chairperson of the students' Union . A. recommend B. realize C. remind D. remember ( )4.There are in the reading room, but many of those books aren′t __ to read . A. enough books ,enough easy B. enough books ,easy enough C. book enough ,easy enough D. book enough ,enough easy ( )5. “It’s too cold. Would you mind_____the window?” “ _____. But don’t do it now.” A. to close; Sure B. closing; Good idea C. closing; Better not D. closing; Of course not ( )6 Most children_________ice cream___________fruit. A. would rather; to B. prefer; to C. prefer to; rather than D. like; better ( )7. Why not read the morning paper today? Because there is_____ in it. A. something important B. nothing important C. anything important D. important things ( )8. “Suzy is helping us clean the house.” The underlined part is ________. A. indirect object B. direct object C. subject D. predicate ( )9. I feel ________ hot because I’ve drunk _______ beer . A. too much , much too B. much too , much too C. too much , too much D. much too , too much ( )10. -- I ’m going to the Science Museum tomorrow. -- ________ A. Enjoy yourself! B. Come on! C. Good luck! D. It doesn ’t matter! 二、完形填空(共15小题,每小题1分,计15分) Yesterday my grandfather told me about his early days . 11 he left school , he found a job in a post office . He worked hard in the 12 . Soon he had more money than his friends 13 his hard work . It seemedthat he would have a bright future . When he was 25 years old , however , he began to 14 _ his job . He wanted a more exciting one , so he left the post office . Two months 15 hefound a new iob in a big company (公司). Workers in this company 16 travelled a lot. At first he really enjoyed the travelling . But after a year , ……………………装……………订……………线……………内……………不……………准……………答……………学校________________________ 班级____________ 姓名____________ 考号he began to hate it . He had to 17 and he was always in a car or on a train . The worst thing was that he 18 make any new friends . Even so , his boss was not satisfied (满意的) with him .Two years later he had to leave the company .He was 19 at that time so he sold his house . He had to 20 a part--time job in a book shop . He was surprised to find that he loved 21 ! He made new friends every day and he enjoyed 22 books . Three years Iater , he married the shop owner 's daughter. Soon they had their first child . In the next ten years , they had another three 23 and four more book shops ! He became very rich indeed .He 24 me " L ife is wonderful . The 25 important thing is that you should always try your best . Never give up ! "( ) 11 . A . While B . When C Until D . ff( ) 12 . A . factory B theatre C . bank D . post office ( ) 13 . A because B . because of C . as D since( ) 14 . A . dislike B .like C . love D . be crazy about( ) 15 . A .ago B . before C . later D . after ( ) 16 . A . almost B . usually C . seldom D . never ( ) 17 . A . stay in one place B . move around C . make noise D . make a wish( ) 18 . A . can ' t B . was able to C . couldn ' t D . could ( ) 19 . A . happy B .energetic C . rich D . poor ( ) 20 . A . accept B . reduce C . loose D . return ( ) 21 . A . it B . them C . him D . none( ) 22 . A . to read B . read C . reading D . reads ( ) 23 . A sisters B . brothers C . children D . cousins ( ) 24 . A . said B . spoke C . talked D . told( ) 25 . A . best B . much C . more D . most三、阅读理解(共15小题,每小题2分,计30分)BIn China, people talk about “Shuxiang”, which is very interesting. For example, 2006 is a “dog year”, and when a baby is born in this year, we say he or she is a little dog. Shuxiang usually brings people good luck. There are 12 animals below.social, having rich feelings, friendly but complaininghard, ordered, but keeping oldbrave, confident, but carelesspeaceful, having a good manner, a business head but cold emotionactive, outgoing, popular but selfishfascinating(迷人的), thoughtful, but doubtfulactive, self-confident, wise but proud and angrykind, helpful, elegant but sadwide, clever, warm, unsatisfied but slick(圆滑的)confident, helpful, happy, but dressyrealistic, loyal(忠诚的), practicalhard, honest, simple, lucky but careless( ) 26.About “Shuxiang”,how many animals does it talk about?A. 10B.11C.12D. 13( ) 27.If someone has a good manner,his/her shuxiang may be_________.A. pigB.tigerC.monkeyD. rabbit( ) 28. When a baby is born in 2008, we can say he or she is a little .A. pigB. ratC. tigerD. snake( ) 29. Mr. Lu, our English teacher, was born in 1976, a dragon year. Can you choose the right description of his characteristics?A. He is a active, self-confident, resourceful but proud and angryB. He is kind, helpful, artistic but sadC. He is active, outgoing, popular but selfishD. He is fascinating, thoughtful but dressy and doubtful( ) 30. Which of the following is not True?A. In China, when me talk about “Shuxiang”, it means twelve animals.B. From the passage, we can know 2010 is a hare year.C. Shuxiang perhaps brings you good luck, but we shouldn’t believe it.D. A cock year always comes after a monkey year.CRoger, a young man from China, has taught Chinese in a primary school in England for 3 years. A lot of children like his class and he enjoys teaching them very much. All the pupils are quite interested in what Roger teaches them. They learn quickly and do everything carefully.One day he said to the children, “People in a lot of Asian countries wear white clothes at funerals(葬礼), but people in America and in Europe wear whitein the weddings because white means purity and happiness. What colour does an English woman wear when she gets married?”Mary said, “White, sir, because she is happy.” “That is good, Mary,” Roger said. “You are quite right. She wears white because she is happy.”But then one boy in the class put up his hand. “Yes, Dick?” Roger said, “Do you have a question?” “Yes,” Dick said. “Why do men wear black in our country when they get married, sir?”( )31. Where does Roger come from?A. ChinaB.AmericaC.EnglandD. Japan ( )32. What does Roger do?A. He teaches English in ChinaB. He is a Chinese teacher inChinaC. He teaches Chinese in EnglandD. He teaches English in England ( )33. Roger enjoys teaching his pupils because_________.A. they are his own childrenB. they are clever and carefulC. they are lovelyD. they are polite and helpful ( )34. An English woman wears white clothes________.A. when she gets marriedB. when she is worriedC. when she is sadD. when she is a funeral( )35. What colour do men in England wear when they get married?A. WhiteB. BlackC. RedD. GreenJohn sent for a doctor because his wife was ill. He called the doctor and made sure they would meet at five. He arrive d at the doctor’s at twenty to five. He thought, “It’s a little bit earlier. I’ll wait for a moment. It’s good to keep the time.”Then he stopped his car in front of the doctor’s. He looked around and saw a noisy square(广场)not far from here. He went there and sat down on a chair to enjoy the last light of afternoon sun and make himself quiet. He saw some children playing and some women talking to each other happily.Suddenly he heard a girl crying. He came up to her and asked some questions. Then he knew she got lost. John tried to find out her address and took her home. The girl’s parents were very thankful.Then John hurried to the doctor’s. The doctor said angrily when he saw him, “You’re late. Why did you keep me waiting for twenty minutes?” John said no thing but one word “Sorry!”( )36.John drove to the doctor’s ______.A. late?B. on time?C. in time?D. in no time( )37.John went to the square to ______.A. spend the timeB. enjoy himselfC. see the children and the womenD. help the girl( )38.The girl cried because ______.A. someone hit herB. she fell off her bikeC. her parents were angry with herD. she didn’t find the way home( )39.At last John got to the doctor’s at ______.A. twenty to five?B. twenty past fiveC. five o’clock?D. forty past five( )40.From the story, we know John is a ______.A. busy person?B. quiet personC. helpful person?D. lucky person试卷Ⅱ非选择题(65分)四、阅读并完成表格中的相关任务.(共10小题,每小题1分,计10分)Confidence is very important in daily life. It can help you to develop a healthy attitude (态度). A study shows that the people who are more confident are much happier. They can have more chance to make themselves successful. But how to be more confident? Here are some suggestions:·Speak loud When you are not confident, you can’t do well what you want to do. You speak in a voice so low that other people can hardly hear you. Try to speak loud enough so that people can hear you clearly. The high voice can help you become more confident.·Play sports It is tiring to do physical exercise, but it can make you completely relaxed. A strong body helps you be filled with confidence.·Encourage yourself Write down a list of things you did during the day to see how many things you have done well. Did you finish your homework? Did you tell a joke that made everybody laugh? Give yourself praise for the good things you’ve done.· Get rid of (消除) fear Fear comes along with failure (失败). But it’s easy to overcome (克服) if you know that failure is part of your life. Don’t hide your head just because you said something stupid last time. Try to start again and believe you can do better.·Pick up a hobby If you like singing, sing as much as you can. In some ways, a hobby canmake you outstanding. And it will make you happy and confident.confidence.47 yourself ●Write down a list of things you did 48 theday.●Give yourself praise for the good thingsyou’ve done.Get rid of fear ●Failure is part of your life.●Try to start again and 49 you can dobetter.Pick up a hobby ●Sing as 50 as you can.● A hobby can make you outstanding, happy andconfident.五、词汇(共20小题,每空1分,计20分)A. 根据句意、汉语提示或首字母写出单词。