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高三数学基础训练题集1-10套(含答案)

图2俯视图侧视图正视图4图1乙甲7518736247954368534321高三数学基础训练一一．选择题：1．复数i1i,321-=+=zz，则21zzz⋅=在复平面内的对应点位于A．第一象限B．第二象限C．第三象限D．第四象限2．在等比数列｛an｝中，已知,11=a84=a，则=5aA．16 B．16或－16 C．32 D．32或－323．已知向量a =（x，1），b =（3，6），a⊥b ，则实数x的值为( )A．12B．2-C．2D．21-4．经过圆:C22(1)(2)4x y++-=的圆心且斜率为1的直线方程为( )A．30x y-+=B．30x y--=C．10x y+-=D．30x y++=5．已知函数()f x是定义在R上的奇函数，当0>x时，()2xf x=，则(2)f-=( )A．14B．4-C．41- D．46．图1是某赛季甲．乙两名篮球运动员每场比赛得分的茎叶图，则甲．乙两人这几场比赛得分的中位数之和是A．62 B．63 C．64 D．657．下列函数中最小正周期不为π的是A．xxxf cossin)(⋅= B．g（x）=tan（2π+x）C．xxxf22cossin)(-=D．xxx cossin)(+=ϕ8．命题“,11a b a b>->-若则”的否命题是A．,11a b a b>-≤-若则B．若ba≥，则11-<-baC．,11a b a b≤-≤-若则D．,11a b a b<-<-若则9．图2为一个几何体的三视图，正视图和侧视图均为矩形，俯视图为正三角形，尺寸如图，则该几何体的侧面积为A ．6B ．24C ．123D ．3210．已知抛物线C 的方程为212x y =，过点A ()1,0-和点()3,t B 的直线与抛物线C 没有公共点,则实数t 的取值范围是 A ．()()+∞-∞-,11,B ．⎪⎪⎭⎫ ⎝⎛+∞⎪⎪⎭⎫ ⎝⎛-∞-,2222, C ．()()+∞-∞-,,2222D ．()()+∞-∞-,,22二．填空题:11．函数22()log (1)f x x =-的定义域为．12．如图所示的算法流程图中，输出S 的值为．13．已知实数x y ，满足2203x y x y y +⎧⎪-⎨⎪⎩≥，≤，≤≤，则2z x y =-的最大值为_______．14．已知c x x x x f +--=221)(23，若]2,1[-∈x 时，2)(c x f <恒成立，则实数c 的取值范围______ 三．解答题:已知()sin f x x x =+∈x (R )．（1）求函数)(x f 的最小正周期;（2）求函数)(x f 的最大值，并指出此时x 的值．高三数学基础训练二一．选择题：1．在等差数列{}n a 中， 284a a +=,则其前9项的和S9等于 ( )A ．18B ．27C ．36D ．92．函数()()sin cos sin f x x x x =-的最小正周期为 ( )A ．4π B ．2πC ．πD ．2π 3．已知命题p: {}4A x x a=-,命题q :()(){}230B x x x =--,且⌝p 是⌝q 的充分条件，则实数 a 的取值范围是： ( )A ．(-1,6)B ．[-1,6]C ．(,1)(6,)-∞-⋃+∞D ．(,1][6,)-∞-⋃+∞ 4．用系统抽样法从160名学生中抽取容量为20的样本，将160名学生从1~160编号，按编号顺序平均分成20组（1~8号，9~16号，。

三年级语文阅读能力培养及训练一(词语理解练习)

查带点的字音序部首消化闭合字典里的解释 ①除去；②溶化；③需要。选择义项
①停止；②不通；③关，合。
1.形容‚脸色和蔼喜悦，和善可亲‛的词语是（）。 A．平易近人 B．兴高采烈 C．和颜悦色 D．眉开眼笑 2．‚审视‛一词中‚审‛的意思是（ A．详细 B．审问 C．知道 D．果然）。
教学片断4：《孙悟空三打白骨精》
师：课文说白骨精‚诡计多端‛。请大家想想，这白骨精，究竟施了哪些诡计？听你们老师说，你们前不久刚好上了节‚感悟三十六计‛的综合实践课。请大家拥‚三十六计‛分析一下，白骨精施了哪些诡计？生：我看出了她的‚金蝉脱壳‛计。‚‘啪’的一声村姑倒地死去，可是倒地的只是白骨精的化身，她的真身却化为一缕轻烟逃跑了‛。生：我发现了‚美人计‛。‚白骨精为了吃唐僧肉，变成一个村姑，提着一篮馒头，笑着向唐僧走来。‛ 生：我发现了‚连环计‛。 ‚白骨精为了吃唐僧肉，差点丢了性命，她知道有孙悟空在，是吃不到唐僧肉的，决定再施诡计，让唐僧把孙悟空赶走‛。
阅读心理学的研究证明，有较高阅读和语言能力的人，都有丰富的心理词典和良好的语感，两者相辅相成，即词汇越丰富，对语言的感觉就越敏锐；同样，有良好语感的人，在阅读或表达时，激活已有词汇和捕捉新语汇的能力都超乎常人。因此，词句的学习和语感的培养密不可分，两者是有效促进语言积累、提高语文能力的重要因素。
请依照‚用‛的字义，为下列词语中的‚用‛字选恰当的解释： 1.节约用电（） 2.不用担心（）3.请用茶( )
1)使用，使人、物发挥其功能。 2）进饭食。 3）费用，花费的钱财。 4）需要（多为否定）。 5）功用，物质使用的效果。
沃尔特•迪斯尼是美国最负盛名的人物之一。他在少年时代，曾经到美国的堪(kān)萨斯明星报社应聘，没有被录用。后来，他终于找到了一份替教堂做画的工作。有一天，当他(象像)往常一样在车库工作的时候，忽然看见一只老鼠在地板上跳跃。他赶紧回到家里，拿了一些面包屑(xiè) 给它吃。渐渐地，彼此混得很熟。有时候，那只老鼠(竞竟)大胆地爬到他工作的画板上，并且有节奏地跳跃着。出于好奇心，他每天都要(带代)一些面包屑去喂老鼠。老鼠美美地饱餐，他就在一旁瞪大眼睛细细地观看，直到老鼠跑走为(至止)。

魔方格初中英语综合能力训练 1

1.Someone says“Time is money. “But I think time is_________ important than Money.A．least B．Much C．even more D．much least2.—Do you know _______ the Capital Museum?—Next Saturday.A．when will they visit B．when did they visitC．when they visited D．when they will visit3.—Have you decided ____________ on April 1st?—I will put a piece of paper which says “Hi”on my brother’s back.A．what joke will you play on your brother B．who you will foolC．what will you put on your brother’s back D．how you will fool others4.—These days all China is worried about the plane of MH370.—Yes. All the world wants to know________________.A．where did the plane go B．where did the plane landedC．if the passengers are alive D．when can we find the plane5.—Could you tell me someexamination skills?—Sure. In the exam, the _______you are, the_______ mistakes you’ll make.A．carefully ; little B．more carefully; fewestC．more careful; fewer D．more careful; less6.Do you believe some special dogs can do things ______ man?A．as good as B．so good as C．as well as D．so well as7.—Hello! Can I speak to Tom?—Sorry. He isn't in now. He____to play tennis.A.goesB. will goC. has goneD. was going8.—How long _______ you _______ the bicycle?—About two weeks.A. have, hadB. have, boughtC. did, buyD. have, have9..My sister has learnt English .A. for twelve years agoB. since she was fourC. twelve years agoD. at the age of four10.---What does Tom’s uncle do?---He is a teacher. He __________ physics at a school now.A. will teachB. has taughtC. teachesD. taught11.Linda _____ got a sister, but she's got a brother.A. isB. isn'tC. hasD. hasn't12.When the woman saw that her son was OK after the car accident, she said _____, “Well, dear, you are the most important for me, not the expensive car. ”A．in peace B．in danger C．in surprise D．in relief13.Li Ming is a student who is easy _____ though he has some trouble _____ his lessons.A．to be got along with; in B．to get along with; withC．to get along; in D．getting along with; with14.–Is there a bridge over the river?–Yes, there is ______ bridge over it.A．a 800-metres-long B．an 800-metres-longC．a 800-metre-long D．an 800-metre-long15.His failure made his father think him a ___________ boy.A．disappoint B．disappointed C．disappointing D．disappointment16.I can’t go _____ because I have to go home at once.A．to somewhere else B．anywhere else C．somewhere else D．to else anywhere17.____ should not be allowed to go out at night.A. Twelve-years-oldB. Twelve-year-oldsC. Twelve year old C. Twelve year old18.Everybody in the village knew him，so we had his home．A．no difficulty to find B．some difficulty findingC．some difficulty to find D．no difficulty in finding19.They spent as many hours as they could ___their lessons.A.studyB. to studyC. studying20.His father________his hometown for twenty years.He really misses it.A.has been away fromB.leftC.has left21.It was _____ lovely weather _______we decided to spend the day on the beach .A.too.toB.such.thatC.so.that22.This pair of shoes ______from EnglandA.areB.ise23.I didn’t have any difficulty ______English well.A.studyingB.studyC.to study24.—What happened last night?—There was a fire in the hotel. Luckily, it was soon ________.A．put out B．handed out C．turned off D．put off25.—Why didn’t David ________his friend’s invitation to the picnic?—Because he had to prepare for the exam.A．accept B．Receive C．refuse D．get26.—You look tired. What’s the matter?—I cared for my sick daughter all day.A．cared about B．look after C．took care of D．helped out27..—Three years has passed. We will study in a new school in several months.—We are supposed to get along well with new teachers and classmates.A．past B．gone by C．left D．ended28.I bought a pair of running shoes because I want to _____ the teachers’relay race.A．join B．take part in C．in D．have part in29.It was ______ lovely weather _______ we decided to spend the day on the beach .A.too.toB.such.thatC.so.that30.Tom _______ yesterday morning, but I was out.A．built up me B．built me up C．rang up me D．rang me up31.We should stop people from_____ the street when the light is red.A．walk B．Walking C．to walk D．walked-32.--Would you mind ______ the door? It’s cold outside.--- OK. I’ll do it right now.A．opening B．no opening C．closing D．not closing33.---Is doing morning a good habit? ----Yes, it is.A．exercise B．Exercises C．exercising D．exercised实义动词练习Could you show me how to ________ this new recorder?A．operate B．listen C．look D．learn34.Try to give its meaning when you meet a new word. Don’t _____ your dictionary all the time. A．work on B．take on C．keep on D．depend on35.The main unit _________ all the computer’s electronics.A．contains B．Shows C．uses D．helps-------36.Wendy, don’t waste the food! all the vegetables on the plate.A．Eat up B．Wash up C．Clean up D．Put up37.Would you mind _______ me how ________ this math problem ?A．telling, to solve B．telling, solve C．to tell, to solve D．to tell, solve 38.–Where is Lily?--She ________Chengdu. She _______there for two days.A．has been to, has been B．has gone to, has goneC．has been to, has gone D．has gone to, has been39.There _______ an amazing fashion show at He’ping Shopping Mall next week.A．is B．was C．will have D．will be40.They need to _______ some good ideas to help the old people in the Old People’s Home. A．think about B．think of C．come up D．think up41.My father is used to _______ in the country. He doesn’t want to move to the city.A．live B．Living C．lives D．lived42.一Why do you appreciate her help so greatly?一Because her donation makes it possible for me _______ the dog Lucky.A．to having B．have C．to have D．having43.—Ann, I remember that you didn’t use noodles with chopsticks well.—People should change.After my three-year life in China．I am used noodles with them.A．to eating; for eating B．to eat；to eat C．to eat；to eating D．to eat；for eating 44.一The summer vacation is coming．Do you have any ideas about the coming vacation?－I _____volunteering in the old people’s home．What do you think of it?A．suggest B．expect C．wish D．would likeT45.hose pictures often ______ me ______the last school trip with our classmates.A．think；of B．remind；of C．help；out D．cheer；up46.I enjoy reading the novel that was written by Zhang Ailing.A．written B．writing C．wrote D．writes47.—When does our class meeting begin?—Oh, it’s been _____ because of the sports meeting.A．put away B．put off C．put down D．put out48.—I hear the plane of MH370 has been found!—Really？I wonder if some people are still alive.A．It’s written B．It’s said C．It’s reported D．It’s talked 49.—What are you doing this afternoon?—My computer is broken. I have to have it repaired this afternoon.A．ask someone to repair it B．repair it myselfC．fix it up D．ask someone to sell it50.--______ a volunteer is great.-- I think so. Some of us want ______ volunteers for the next Olympics.A．Being, being B．To be, being C．Being, to be D．To be, to be51.–The woman ____ all of her money to charities _____ the poor.--She’s great.A．gave off, to help B．gave up, helping C．gave away, to help D．gave, helping 52.Teenagers should be allowed _______ out on school nights.A．going B．to go C．gone D．went53.Would you like _____dinner with us?A．having B．to have C．eating D．eatT54.he meeting was very successful and our teacher____in English.A．end up speaking B．ended speaking C．ended up to speak D．ended up speaking End up doing…以做什么而结束；end up with sth，以什么而结束。

队列训练大纲1

学生队列训练大纲1.0目的规范学生队列训练程序，提高学生的个人形象及素质，提高训练质量。

2.0立正立正是仪仗兵的基本姿势，是队列动作的基础。

仪仗队在集合、接受工作任务、进见管理处领导、公司领导和向领导汇报、回答领导问话等严肃庄重的时机和场合，均应自行立正。

口令:立正要领:两脚跟靠拢并齐，两脚尖向外分开约60度，两腿挺直，小腹微收自然挺胸，上体正直微向前倾，两肩要平稍向后张，两臂下垂自然伸直，手指并拢自然微曲，拇指尖贴于食指第二节，中指贴于裤缝，头要正颈要直口要闭，下颌微收，两眼向前平视。

2.1跨立跨立主要用于军体操、执勤和岗台上与立正互换。

口令:跨立要领:左脚向左跨出约一脚之长，两腿挺直，上体保持立正姿势，身体重心落于两脚之间;两手后背，左手握于右手腕，拇指根部与外腰带下沿(内腰带上沿)同高，右手手指并拢自然弯曲，手心向后。

2.2稍息口令:稍息要领:左脚顺脚尖方向伸出约全脚的三分之二，两腿自然挺直，上体保持立正姿势，身体重心大部分落于右脚;稍息过久可以自行换脚。

2.3敬礼、礼毕敬礼分为举手礼和注目礼。

2.3.1敬礼(一)举手礼口令:敬礼要领:上体正直，右手取捷径迅速抬起，五指并拢白然伸直，中指微接帽沿右角前约2厘米处(戴贝雷帽或不戴帽时微接太阳穴，与眉同高)，手心向下，为向外张(约20度)，手腕不得弯曲，右大臂略平，与两肩略成一线，同时注视受礼者。

(二)注目礼要领：面向受礼者成立正姿势，同时注视受礼者，并目迎目送(右、左转头角度不得超过45度)。

(三)单个仪仗兵敬礼要领:单个仪仗兵巡逻时，在距离受礼者(业主、管理处员工、护管队员)5-7步处，行举手礼或者注目礼;岗亭值勤时，应当面向受礼者(所有进出小区的人员)立正，行举手礼，待受礼者还礼后礼毕。

(四)齐步行进间敬礼口令:敬礼要领:按照齐步的动作要领实赭(跑步换齐步)，左脚向前透出的同时右手敬礼，左手仍自然摆动，待受礼者还礼后礼毕。

2.4礼毕(一)停止间礼毕口令:礼毕要领:行举手礼者，将手放下:行注目礼者，将头转正。

(队列训练一)立正、稍息动作要领

队列训练之一《立正、稍息动作要领》一、动作要领口令：立正，稍息，跨立【要领】立正时，两脚跟靠拢并齐，两脚尖向外分开约60度；两腿挺直；小腹微收，自然挺胸；上体正直，微向前倾；两肩要平，微向后张；两臂自然下垂，手指并拢自然微屈，拇指尖贴于食指的第二节，中指贴于裤缝；头要正，颈要直，口要闭，下颔微收，两眼向前平视。

稍息时，左脚顺脚尖方向伸出约全脚的三分之一，两腿自然伸直，上体保持立正姿式，身体重心大部分落于右脚。

跨立时，上体保持立正姿式，左脚向前跨出约一脚之长，同时两手后背，左手握右手腕，左手手腕上沿约与外腰带下沿（内腰带上沿）同高。

二、动作基本要求立正时，要着装整齐，经深振奋，姿态端正，表情自然，要求做到：挺腿，挺胸，挺颈，自然睁大眼睛。

立正时，精力集中，向前平视时，眼皮微向上挑，注视正前方一个目标，做到目不斜视，少眨眼。

稍息时，出收脚要迅速，方向要正，距离准确，保持上体姿态不变。

跨立时，要军姿端正，精神振作，左脚跨出与两手后背协调一致，定位准确。

三、训练重点和难点立正，稍息训练时，着重掌握三点：一是身体重心大部分落于两脚前脚掌上，保持立正时身体的稳固和持久站立；二是掌握正确的呼吸方式，保证吸气时胸部自然挺出，呼气是胸部不下塌，小腹不鼓胀；三是掌握好两膝后压与并拢相协调，收小腹，收臀部与自然挺胸相协调，收下颔与挺颈，头上顶相协调。

上体保持立正姿势，左脚跨出迅速，同时两手在背后交叉定位准确。

四、训练步骤1、手型练习口令：手型练习，一，二。

要领：听到“手型练习”的口令，两手手型不变，平行前举，约与肩同宽；听到“二”的口令，两手放下成立正姿势，尔后按“一，二”的口令反复练习。

主要解决的问题：手型的准确和定位。

立正时，四指自然微屈，不要绷成三角形，拇指尖内侧贴于食指第二节，拇指于食指略平，两臂自然下垂，中指贴于裤缝。

2、静站练习口令：立正。

要领：（同立正）主要解决的问题：准确掌握立正的要领，并使姿势定型。

三年级数学思维训练（1）

三年级数学思维训练（1）思维训练⼀1、★×2+7－20=25 ★=（）（54－★）×9=72 ★=（）2、A乘4，再加上20，然后除以5，等于8，A是（）。

3、篮⼦⾥有⼀些苹果，5个5个的数多1个，7个7个的数也多⼀个。

篮⼦⾥⾄少有（）个苹果。

4、甲仓库存粮80吨，⼄仓库存粮56吨，每天从甲仓库运出8吨粮⾷，从⼄仓库运出5吨粮⾷。

那么（）天之后两个仓库剩下的粮⾷就同样多了。

5、把⼀根⽊头锯成3段要4分钟，把这根⽊头锯成4段要（）分钟。

6、名华奥校今年招收⼆年级新⽣80⼈，其中男⽣⽐⼥⽣多10⼈，男⼈有（）⼈？⼥⽣（）⼈？7、⼀年⼀班和⼀年⼆班共有学⽣46⼈，⼀年⼆班转到⼀年⼀班2⼈，两个班⼈数相等，原来⼀班有（）⼈？⼆班有（）⼈？8、⼀位数加⼀位数，最⼩是（），最⼤是（），两位数加两位数，最⼩是（），最⼤是（），三位数加三位数，最⼩是（），最⼤是（），从以上的解题中你是否发现规律了呢？请完成下⾯挑战题：四位数加四位数，最⼩是（），最⼤是（）。

9、⼩李、⼩华⽐赛爬楼梯，⼩李跑到第2层时，⼩华正好跑到第4层。

照这样计算，⼩李跑到第5层时，⼩华到第（）层。

10、直接写出得数（1）42+71+29+58= （2）526－73－27－26=（3）1457－（185+457）= （4）729+154+271=（5）516－56－44－16=11、⼩明和⼩强原有书和相等，后来⼩明把书送给⼩强12本，这时⼩明和⼩强，（）的书多？多（）本。

12、⼀只鸭、⼀只鹅共重12千克。

如果知道⼀只鸡和⼀只鸭共重7千克；⼀只鹅和⼀只鸭共重9千克，那么⼀只鸭是（）千克。

13、把两张纸贴接在⼀起⽤⼀分钟，把同样6张纸连接贴成⼀张⼤纸，共⽤（）分钟？14、甲是⼄的哥哥，丙是丁的弟弟，丁是甲的⽗亲，丙是⼄的什么⼈？（）思维训练⼆1、先找规律，再填数1×9+2=1112×9+3=111123×9+4=11111234×9+5=（）12345×9+6=（）123456×9+7=（）×9+9=（）2、算式谜□ 9 1 □ 8 2 □□□□□□+ □ 1 □ + □ 1 □ - □ 8 5 - □ 8 7□ 9 1 □□ 9 0 □ 6 3 7 7 3 73、⼩推理（1）已知□+○=28，□=○+○+○，那么□=（）○=（）（2）☆+☆+□+□+□=61，☆+☆+□+□=52，那么☆=（）□=（）4、在⼀个减法算式⾥，被减数、减数、差这三个数的和是120，则被减数是（）。

七年级科学专题训练(一) 基本实验操作和测量

第1章科学入门
专题训练(一) 基本实验操作和测量
第1章科学入门
一、选择题二、填空题三、实验探究题
专题训练(一) 基本研究性学习小组，对与测量有关的问题进行了讨论，其中正确的观点是( B ) A．测量工具的最小刻度值越小越好 B．体温计因其特殊的结构，可以离开人体读数 C．随着科技的进步，有可能完全消除测量误差 D．温度计的玻璃泡浸入被测液体中，应迅速读数
专题训练(一) 基本实验操作和测量
12.在“测量物体长度”的实验中，小可和同学们跃跃欲试，都想要测出最准确的数据。小可说：“我只要认真按老师的要求去做就不会有实验误差。” 小军说：“我只要遵守操作规则就不会产生实验误差。” 小红说：“我对同一个量多测几次，求出它们的平均值，就不会有误差了。” 小丽说：“只能减小实验误差，即使老师测量也会有误差。” (1)你同意___小__丽___同学的观点。
专题训练(一) 基本实验操作和测量
(3)有位同学测量体温的示数为38 ℃，他没有甩就给小林同学测体温，测得的示数仍是38 ℃，则小林同学的体温____D____(填序号)。 A．一定等于38 ℃ B．一定低于38 ℃ C．可能高于38 ℃ D．一定不高于38 ℃ (4)有一支温度计，当它的玻璃泡浸在冰水混合物中时，管内水银面的位置在刻度2 ℃处，放在沸水中(标准大气压)时，水银面的位置在刻度98 ℃处。已知某杯水的真实温度是40 ℃，那么用这支温度计测量这杯水的温度是__4_0_.4__℃____。
专题训练(一) 基本实验操作和测量
15．小明在实验室里测量一块形状不规则、体积较大的矿石的体积，因矿石体积较大，放不进量筒，因此他利用一只烧杯，用如图所示方法进行测量，那么矿石的体积是____7_0___cm3；由于取出矿石时会带出一些水，由此导致矿石体积的测量值＞_(_或_大__于__) _真实值。

高一英语(完形填空专项训练一1

精锐教育学科教师辅导讲义Costs vary from about $ 130 16 a cheap machine to more than $ 2, 700 for a hand-made bicycle.Mountain biking has 17 some fanatics(热衷的) who race down the sides of mountains like crazy. But most riders ride slowly and they rarely 18 far from home.The biking craze has brought a 19 to clothing and bicycle accessory makers. Last year, bikers paid $ 630 million for biking clothes and accessories.Bicycling seems 20 to continue its fantastic growth.( ) 1. A. invented B. created C. discovered D. found out( ) 2. A. into B. onto C. above D. below( ) 3. A. taking in B. taking out C. taking away D. taking up() 4. A.average B.reduction C. increase D. raise() 5. A.getting ing C. joining D. arriving() 6. A.biking B.aerobics C. jogging D. race walking() 7. A.wheels B.speed C. handlebars D. tires() 8.A.safe B.dangerous C. healthy D. exciting() 9. A.But B.And C. Even D. If()10. A.fancinating B.suffering C. boring D. exciting()11. A.important B.helpful C. fast D. popular() 12. A.it B.which C. this D. that()13. A.too B.also C. as well D. either()14. A.it B.that C. this D. /()15.A. for B.with C. on D. in()16.A. at B.to C. for D. about()17.A. accepted B.hurt C. attracted D. affected()18.A. travel B.visit C. go to D. reach()19.A. fortune B.money C. possession D. wealth()20.A. possibly B.probably C. likely D. perhapsKeys:1．C “先是慢跑，然后是有氧运动，不久前美国人又发现了竞走。

阅读理解训练(一)

阅读理解专项训练（1）Many places in the world need more fresh（淡的）water．Every country is trying to find ways to turn salt water into fresh．Why aren't there many factories like the Symi factory？In some places，the sun is not hot enough．Or it does not shine every day．In such places，other ways of heating（加热）sea water can be used．These ways cost more money，but they work faster than the sun．By boiling（煮沸）sea water with high heat，a lot of fresh water can be made quickly．But heating is not the only way to get fresh water from salt water．Other ways are tried．One way is freezing（冷冻）．The fresh part of salt water freezes first．To get fresh water，the bits of ice are taken out．Which way is the best？The one that gives the most water for the least money．It may be a different way for each place．Symi's way seems very good for small，hot places．It does not make very much water at a time．But the factory is easy to build and costs little．That is why people in many dry places talk about Symi！根据短文内容，选择最佳答案。

五上思维训练 (1)

图形的面积1、如右图，已知阴影部分的面积是30平方厘米，求平行四边形的面积。

2、如右图，D 、E 把BC 平均分成三份，求△ABD 的面积。

（单位：米）3、如右图，甲三角形的面积比乙三角形的面积少多少平方分米？（单位：分米）4、现有一个5×5的方格表（右上图），每个小方格的边长都是1，那么图中阴影部分的面积总和等于多少？5、如下图，平行四边形的面积是36平方厘米，求阴影部分的面积。

6、如下图，a 、b 两条直线是平行线，求乙的面积。

（单位：分米）7一个平行四边形，两条高分别长8分米和12分米，一条底长10分米，这个平行四边形的面积是多少平方分米？5B8A8、利用一面墙，用篱笆围一个养鸡场（如图）。

篱笆的全长是41米，这个养鸡场的面积有多少平方米？9、一个直角梯形，若下底增加5米，则面积就增加15平方米；若上底增加2米，就得到一个正方形。

这个直角梯形的面积是多少？10、知梯形的面积是88平方分米，上底是10分米，下底是12分米，求图中阴影部分的面积。

11、块长方形红布长3米，宽2米，用它做两条直角边都是5分米的直角三角形小旗，可以做多少面？12、下图是由两个完全相同的梯形重叠在一起，求图中阴影部分的面积。

（单位：分米）13、下图，BC=10厘米，EC=8厘米，阴影面积比三角形EFG 大10平方厘米，那么CF 是多长？14算下面图形的面积。

（单位：厘米）15米5 416BC10128515、求图中每个小正方形的边长是1厘米，求三角形的面积。

16、求下图中的面积。

（单位：分米）17、下图是由两个边长分别是10和8的正方形组成的。

求出下图中各个阴影的面积。

（单位：厘米）252532 15 2518、图中已知BC=5厘米，AD=3厘米,AE=4厘米，CF=6厘米，∠AEB=90°，∠CFD=90°。

求图中阴影部分的面积。

19、计算下面图形的面积是多少公顷。

20、一个占地1公顷的正方形花圃，边长如果各加长100米，花圃的面积增加多少公顷？21、计算下面图形的面积是多少公顷。

近代训练一答

群 .(或者为: 而4阶群G中元素的阶除单位元外只能为2或4, 若有元素a的阶为4, 则G=<a>, G是可换群, 若G中没有元素的阶为4, 则非单位元的元素的阶都为2, 而除出单位元外, 元素阶都为2的群是可换群); 所以阶数小于6的群一定是可换群 .
十四、试证: 循环群的子群是循环群 . 证明: 设G为一个循环群, 且G=<a>, H是G的一个子群, 则H={ar|rZ}, 设s为H中a的最小正整数幂指数, 则H=<as> 因任取bH, 都有b=ak, 在此k=sq, 即b=(as)q , (否则,若k=sq+r而r≠0,则 ak=asq+r 得ar=aka-sq =ak-sqH, 与s为最小正整数幂指数矛盾,所以 r=0,即k=sq ), 所以H=(as) .
三、整数集中, 运算”⊕”为: n,mZ, m⊕n=m2-mn, ⊕是否满足结合律, 交换律? 解: m⊕n=m2-mn, n⊕m=n2-mn, 交换律不成立; (m⊕n)⊕h=(m2-mn)⊕h=(m2-mn)2-(m2-mn)h , m⊕(n⊕h)=m⊕(n2-nh)=m2-m(n2-nh), 结合律不成立 .
十一、试证: 群G的中心是G的一个不变子群 . 证明: 对群G, 中心为C(G)={a | ax=xa ,xG}, aC(G), xG, 有ax=xa, 得xax1=aC(G), 所以C(G)为群G的不变子群 . 十二、试证: 阶数小于6的群一定是可换群 . 证明: 1,2,3,5 阶群都是循环群, 所以都是Abel 群; 而4阶群(同构的视为一样的群)只有两个,一个
训练一答案
一、填空题 1、设{x,y} } . 2、若A={2,5}, B={1,0,-2}, 则A×B= { (2,1),(2,0),(2,-2),(5,1),(5,0),(5,-2) . 1 2 3 4 } -16= (1) . 3、在S4中, a= 则 a ,

高三英语晚自习限时训练 (1)

高三英语晚自习限时训练一、阅读理解AFun things to do in high schoolLearn another languageYour school might be holding foreign languages classes, so this is a great way to start your language learning journey! If you want more self-paced learning, apps like Duolingo are easily accessible (可使用的) on our mobile phones. As our world becomes more in terconnected, it’s always good to learn another language or two.Aim for a semester (学期) of straight AThis can be a difficult task but not impossible to achieve, as long as you put in the right amount of work and effort. If you are struggling(挣扎)with your grades, you can host or join group studies with your classmates!Don’t be disheartened if you are not able to get an A in a semester. What’s important is having the drive to go forward. As a famous person once said, “He who would climb a ladder must begin at the bottom.Experience another cultureCulture and tradition are something that all humans share. No matter where we come from, we always bring our culture with us. People coming from different cultures may be among your friends or neighbors.You can go to a museum, read a book, or try new food in your area. Remember to keep an open mind and take the time to learn about them.Bring a shareable treat to classIf you know your way around the kitchen, you can impress your class by making and bringing them a delicious treat! Not only will this make their stomachs happy, but you’ll also bond (联系) the whole class together. Just don’t forget to check with your teacher first before bringing one.1. What should you do if you want to learn a language at your own speed?A．Go to a museum to read books. B．Attend another language class. C．Learn it on an app like Duolingo. D．Join group studies with your classmates.2. What’s the key if you can’t get an A in a semester?A．Keeping an open mind. B．Asking your teachers for help. C．Changing your study method. D．Having the drive to go forward.3. What will probably be the result if you bring a treat to class?A．Experiencing different cultures. B．Making your teacher angry and anxious. C．Making some students have a stomachache. D．Making your classmates happy and united.BIn large population studies, people who eat lots of fruits and vegetables high in vitamin C appear to have a reduced risk for various types of cancer, including cancers of the mouth and lung. But it’s not clear that these benefits come specifically from vitamin C．The Age-Related Eye Disease Study found that a daily supplement containing 500 mg of vitamin C can help slow the progress of macular degeneration, an age-related eye disease that causes vision loss. But we don’t know what benefits, if any, are provided by vitamin C in particular.Many people take vitamin C supplements in unnecessarily high doses to prevent or treat various conditions for which its effectiveness is unproved. The vitamin C supplements have variously been said for staving off sunburn and improving the appearance of wrinkles. None of these benefits have been confirmed in scientific studies.Perhaps the best-known and most widely promoted use of high-dose(高剂量)vitamin C is to prevent or treat the common cold. Most of the evidence shows that high-dose vitamin C will, at most, shorten a cold by one day. In ordinary circumstances, vitamin C has no preventive value, although a few studies have reported a 50% reduced risk of developing colds among people taking vitamin C in extreme circumstances-for example, skiers, marathon runners, and soldiers working in extreme conditions.The recommended vitamin C dosage per day for healthy women is 75 mg per day. For adults, the highest safe daily intake is likely to be 2, 000 mg per day. Vitamin C is water-soluble, so any amount more than you need will not be stored in the body. It’s safe in almost any amount from foods, and supplements in recommended amounts are also regarded as safe for most people. In some people, high doses-more than, say, 2, 000 or 3, 000 mg per day-can cause a variety of symptoms. People with kidney conditions should take no more than 1, 000 mg a day.；4. What can we learn about vitamin C in the first paragraph?A．It can be of better effect in higher doses.B．It can be a cure for age-related eye disease.C．It can help slow the progress of some illness.D．It can reduce the risks of the mouth cancer.；5. What function does vitamin C have intreating the common cold?A．It can help people save plenty of money.B．It can stop soldiers from catching a cold.C．It may reduce a cold by one day at most.D．It may prevent the common cold efficiently.；6. How much Vitamin C are healthy women advised to take per day?A．75 mg.B．500 mg.C．2, 000 mg.D．3, 000mg.；7. Where is this text probably taken from?A．An exam paper.B．A travel journal.C．An art guidebook.D．A science magazine.CThis year will have been the warmest in the UK, the Met Office has said. Although for many people the record from the year that attracted the most attention was that the summer heatwave reached 40. 3℃, the organization said that more significant was a figure 30 degrees lower-the average temperature over the course of the year.Although the exact temperature will need to be confirmed in the new year, the Met Office predicted that 2022 is going to exceed (超过)the previous record for the warmest annual average, which was 9. 88C in 2014. Apart from this month, every other month in the UK in 2022 was warmer than average. New Ye ar’s Day 2022 was the warmest on record, exceeding 16℃ in North Wales. Dr. Mark McCarthy, head of the National Climate Information Centre, said: “While many people will remember the summer’s extreme heat, what hurts people most, especially the elderly, this year is the relatively consistent heat through the year. ” Although this summer was the fourth warmest on record, it was the first in which the temperature exceeded 40℃.McCarthy said that we can expect to see increasingly warmer summers as a consequenc e of climate change. “The warm year is in line with the impacts we expect as a result of human-related climate change, ”he said. “Although it doesn’t mean every year will be the warmest on record, climate change continues to increase the chances of increas ingly warm years over the coming decades. ”Rebecca Newsom, head of politics at Greenpeace UK, said: “These aren’t the kind of records you want to be breaking. Record-breaking investment in the renewable technologies will get us out of this mess.At present though, Britain is ready for rain, with forecasters warning of difficult driving conditions caused by wet weather over the next few days. Although temperatures will stay mild for much of the UK, the Met Office warned that the rainfall will hit England and Wales this Saturday and Sunday.；8. What will make this year special in the UK?A．The most visitors will be attracted.B．The warmest year will take place.C．The biggest success will be achieved.D．The highest temperature will be 30℃.；9. What can be inferred from Paragraph 2?A．Every month in the UK was warmer than average.B．Next summer may be the first summer to exceed 40℃.C．Many elderly men may go to hospital for the high heat.D．New Year’s Day was the warmest on record in England.；10. What does Rebecca think of the future climate?A．Renewable energies can fight climate change well.B．Record of high temperature will be broken next year.C．Politicians should be responsible for the current mess.D．Warm summers are a consequence of human activities.；11. What is the weather like in Wales this weekend?A．Sunny.B．Snowy.C．Cloudy.D．Rainy.二、七选五阅读Since I’ve been living abroad, many different people have asked me to name typical British dishes. I have, however, struggled to think of an answer. Yes, we do have our own national dishes. 12Fish and chips, as you could guess, is made up of battered fish and chips. It is often accompanied by mushy peas (豌豆糊), which consists of peas mashed up to form a thick paste. The majority of British people really do love this dish but it is not something that we would eat, say, on a weekly basis. 13 British people associate this dish with the seaside and it’s something that will usually be eaten on a day trip there.14 This is made up of roast meat, usually chicken or beef, accompanied by roast vegetables and a meat sauce. It is usually eaten on a Sunday, perhaps for a special family dinner.Although we do have our traditional dishes, we do not eat these on a daily basis. On a daily basis many British people will eat rice or pasta dished. 15 You can see this by looking at the range of international foods in the supermarket or at the va riety of different restaurants you can find on our high streets.16 However, perhaps unlike other countries, we tend to prefer to cook recipes influenced by other cuisine.A．We eat them as the seasons change.B．But how much do we actually eat them?C．In conclusion, we do have our national dishes.D．Another favourite British dish is the roast dinner.E．Our diet has been greatly influenced by other countries.F．It’s also not usually something that you would cook at home.G．You’ll be served a traditional dish if you get invited for dinner at a British family’s home.三、完形填空The public library is one of the greatest inventions humankind has ever imagined and actually made happen. Libraries are a (an) 17 , quiet place where all people can hang out and read, without having to 18 anyone anything. Apart from being a place that is full of 19 to borrow, libraries are something that offers 20 and warmth. A post on Twitter celebrating the wonderfulness of libraries 21 this point perfectly.“Today a woman with developmental disabilities came into the library, and she was 22 ,” wrote a Twitter user. “She didn’t 23 her address, but her phone number was in her pocket on a piece of paper with Elmo on it. She kept saying, ‘The library is a safe place.’We called and her guardians (监护人) came right over. It seemed that they were not worried at all. Apparently this happens pretty 24 . They even stayed long enough for her to 25 some new books and Sesame Street DVDs. The library is a safe place indeed.”The post 26 others to share their own stories of libraries being safe places for them, and it’s enough to 27 even the hardest of hearts. For people who grew up in dysfunctional (功能失调的) homes, the library can be a safe heaven of calm and kindness. For people lacking financial means, the library is a space that provides free education and free entertainment, as well as a free indoor place to go. This is the reason why 28 people grouped to libraries when they have nowhere else on earth---the only place that doesn’t 29 money. We cannot understate Literal lifesavers. Libraries also fill up a lot of gaps in other social 30 and help people find their way to information about other opportunities. They open the doors to so many 31 .17. A．calm B．noisy C．nervous D．amusing18. A．ask B．pay C．afford D．beg19. A．supplies B．stationery C．books D．cafeterias20. A．support B．assistance C．shelter D．safety21. A．declared B．explained C．tackled D．discovered22. A．trapped B．lost C．anxious D．delighted23. A．know B．search C．conceive D．cover24. A．exactly B．accurately C．regularly D．fluently25. A．work out B．come out C．bring out D．check out26. A．spread B．inspired C．impressed D．contacted27. A．bother B．surprise C．fund D．warm28. A．heartbroken B．homeless C．hopeless D．elderly29. A．require B．quit C．recommend D．spend30. A．research B．communities C．services D．designs31. A．memories B．problems C．advertisements D．possibilities四、语法填空阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式When I was in the middle school, I founded a student club 32 (name) “green planet” inspired by Chai Jing’s documentary Under the Dome. At first people knew this club. As a result, we had only 15 members. And I 33 (laugh) at for being crazy. However, I didn’t lose heart and I insisted. Every day, we club y members broadcast weather reports and PM 2.5 levels. We then published articles and pictures of theserious 34 (pollute) of the city on the school website. Meanwhile, my club also shares suggestions 35 how to live a low carbon life on the school board, for example: take public transportation or car pool to school; do 36 (little) shopping and so on.37 time went by, more are what students showed great interest in our club.And luckily, I persuaded my headmaster to join us. After what seemed ages of waiting, the club was finally accepted by the majority of students in my school. An increasing number of students supported 38 (ours).Since then, we’re worked together 39 (promote) our club. And up to now, 85% of the students 40 (join) us and enjoyed the simple but eco-friendly life.Such is Joy, 41 responsible and persistent girl.五、应用文写作42. If you’re Li Hua. I’m going to plant trees by the river with my classmates this weekend. Please write an email to Nancy and invite her to join us.Contents include: 1. Gathering time and place;2. Activity arrangement and reminder;3. Lunch and return time.Limitations: 1. The number of words is about 100. 2. You can add appropriate details to make your writing coherent.参考答案1. C2. D3. D4. C5. C6. A7. D8. B 9. C 10. A 11. D12. B 13. F 14. D 15. E 16. C17. A 18. B 19. C 20. D 21. B 22. B 23. A 24. C 25. D 26. B27. D 28. B 29. A 30. C 31. D32. named33. was laughed34. pollution35. on/about36. less37. As38. us39. to promote40. have joined41. a42. Dear Nancy,My classmates and I are planning to plant trees by the river this weekend. We all hope you can join us. Here is the schedule.We are to meet at the school gate at 8 o'clock this Saturday morning. Since we'll cycle there and work in the field, you'd better wear casual clothes and comfortable shoes. It would be much better if you could bring some necessary tools. Besides, we'll have a picnic there. Everyone is expected to bring their lunch and share it. Maybe we will return at around 3 o'clock in the afternoon.Would you like to join us? Hope to see you then.Yours,Li Hua。

人教部编版七年级上册语文基础训练(1—3单元)

部编版七年级上册基础训练基础训练（一）一、积累与运用(30分)1．下列词语中加点字注音完全正确的一组是( D )(3分)A．酝酿．(liáng)黄晕．(yùn)发髻．(jì) 碣．石(jié)B．棱．镜(líng) 粗犷．(guǎng)嘹．亮(liáo) 贮．蓄(zhù)C．卖弄．(lòng) 池畦．(qí)莅．临(lì) 草垛．(duǒ)D．花苞．(bāo) 竦．峙(sǒng)窠巢．(cháo) 静谧．(mì)(解析：A项“酝酿”的“酿”读作“niànɡ”，B项“棱镜”的“棱”读作“léng”，“卖弄”的“弄”读作“nònɡ”，“草垛”的“垛”读作“duò”。

)2．找出句中错别字并改正。

(3分)(1)鸟儿将窠巢安在繁花嫩叶当中，高兴起来了，呼朋引伴地卖弄轻脆的喉咙，唱出宛转的曲子。

(轻—清)(2)乡下去，小路上，石桥边，撑起伞慢慢走着的人；还有地里工作的农夫，披着蓑，带着笠的。

(带—戴)(3)看，像牛毛，像花针，像细丝，密密地斜织着，人家屋顶上全茏着一层薄烟。

(茏—笼)3．下列句中加点成语使用不当的一句是( C )(3分)A．森林公园里到处都是呼朋引伴．．．．的游人。

B．他说话这样的不客气，真有点咄咄逼人．．．．C．夏天的雨总是淅淅沥沥．．．．下一阵，让人觉得酣畅极了。

D．墙边一排一排的板凳上，坐着花枝招展．．．．的女人，笑语盈盈而不休。

4．下列句子中没有语病的一项是( C )(3分)A．千百年来的先贤哲人们给我们留下了灿烂辉煌的许多精神财富。

B．据介绍，这次公车改革将涉及近5000多辆中央国家机关本级公车。

C．亚航QZ8501客机失事，再次引发了人们对马航MH370失联航班的追忆。

D．一些家长没有意识到“手机综合症”是一种病，而是采用简单粗暴的方式防止孩子不玩手机。

三年级数学应用题专题训练(1)

三年级数学上册应用题专题训练（1）1.一个果园里栽了125棵苹果树,梨树的棵数比苹果树的4倍少20棵｡这个果园一共栽了多少棵树?2.一段路长324米,已经修了240米,剩下的计划4小时修完｡平均每小时修多少米?3. 红光印刷厂装订一批日记本,前三天共装订了960本,后16天平均每天装订420本｡这批日记本共有多少本?4.一个打字员4分钟输入200个汉字｡照这样计算,输入3000个汉字需要多少分钟?5. 3袋面粉共重75千克,8袋面粉重多少千克?6.一个钢铁厂,炼750千克钢需要用5吨水｡照这样计算,钢铁厂一天节约55吨生活用水,可以炼钢多少千克?7.5箱蜜蜂一年可以酿375千克蜂蜜｡照这样计算,19箱蜜蜂一年可以酿多少千克蜂蜜?一年要酿1725千克蜂蜜需要养多少箱蜜蜂?8.两个年级的同学去买书,三年级有48人,每人买2本,四年级每人买3本,四年级买的总本数和三年级一样多｡四年级一共有多少人买书?9.工人们修马路,原计划用40个工人,实际用了45个工人｡计划要修路90天,实际修了多少天?10.小华从学校步行回家要20分,骑自行车回家要10分｡小华步行每分走45米,他骑自行车每分行多少米?11.学校买15盒彩色粉笔,每盒50枝,用去10盒｡还剩多少枝没有用?12.海天机械厂第一,二,三车间各生产了6箱零件,每箱120个,一共生产零件多少个?13.一台织布机一小时织布21米,5小时4台同样的织布机共织布多少米?14.汽车从南京开往上海,每小时行60千米,3小时行了全程的一半｡因车上一人生病,剩下的路程要2小时行完｡平均每小时要行多少千米?15.刘师傅23天共加工4255个零件,王师傅平均每天比刘师傅多加工18个｡王师傅每天加工零件多少个?16.李伯伯家的一头牛,10天吃草50千克｡照这样计算,有155千克草够这头牛吃多少天?17.湖滨公园有18条游船,每天收入1008元｡照这样计算,现在有26条游船,每天增加收入多少元?18.工厂要加工360个零件,小王5天可做完,用这样的速度,做8天能加工多少个零件?19.明明看一本故事书,每天看20页,5天看了这本书的一半｡这本书一共有多少页?20.老师买来6枝钢笔,钢笔的价钱是圆珠笔的3倍,一枝圆珠笔的价钱是2元｡老师买钢笔用了多少元?21.农机厂一车间分3个组加工3420个零件,每组12个工人｡平均每个工人加工多少个零件?(用两种方法解)22.工厂租用10辆汽车运480吨货,每辆汽车都运了12次｡平均每辆车每次运货多少吨?23.啄木鸟一天能吃645只害虫,青蛙8天能吃608只害虫｡啄木鸟每天比青蛙多吃害虫多少只?24.一堆煤160吨,4辆卡车3次运96吨｡照这样计算,4辆卡车几次才能运完这堆煤?25.工程队铺一条路,计划每天铺90米,20天可以铺完｡实际只用了18天,平均每天铺多少米?26.强强8岁时,他父亲32岁｡当父亲的年龄是强强的2倍时,父亲多少岁?27.某校三年级有4个班,共为残疾人捐款576元,平均每人捐3元,平均每班有多少人?28.修一段长324米的路,前8小时共修了240米,剩下的每小时修21米,还要几小时才能修完?29.订一份电视节目报半年需要15元,张叔叔想订阅三个季度的电视节目报,需要多少钱?有线电视收视维护每月16元,全年要多少钱?30.一堆煤,计划每天烧45千克,可以烧32天,由于节省用煤,实际烧了36天,实际每天烧煤多少千克?31.学校买来5盒羽毛球,每盒12只｡用去20只,还剩下多少只?32.学校买来3个篮球,共花了96元;又买来一个足球,花了40元｡买一个篮球和一个足球需要多少元?两种球的单价相差多少元?33.王霞买来一本140页的故事书,已经看了86页｡剩下的计划6天看完,每天要看多少页?34.一把椅子的价钱是25元,一张桌子的价钱是一把椅子的3倍｡买一把椅子和一张桌子共用多少元?35.班里图书角有58本故事书､34本科普读物｡要放在一个4层的书架上,平均每层要放多少本书?36.李丽和王敏同时做纸鹤,李丽每小时做12只,王敏每小时做14只,做了3小时,两个人一共做了多少只纸鹤?37.同学们参加爬山比赛,女同学分成了4组,每组有15人｡参赛的男同学有76名,一共有多少名同学参加爬山比赛?38.王大伯进县城卖了9只兔子,每只22元｡还卖1只羊,得160元｡(1)王大伯的兔子和羊一共卖了多少钱?(2)王大伯用卖兔子和羊的钱买了4瓶农药,每瓶13元｡王大伯还剩多少钱?39.一桶3Kg的油42元,一桶5Kg的油65元,哪种瓶装的油便宜?40.一件上衣65元,一条裤子28元｡(1)买4件上衣比4条裤子多花多少钱?(2)用150元钱买2套衣服,够吗?41.有两根铁丝,第一根长35米,第二根的长度比第一根的4倍多2米｡第二根长多少米?42.修路队修一条长1500米的公路,已经修好了300米,剩下的要在6天修完,平均每天要修多少米?43.运动场跑道一圈是400米,王叔叔每天坚持跑2圈半｡他每天跑多少米?44.小丽走一步长约5分米,她从家到学校一共走了540步,算一算,她家到学校大约有多少米?45.兰兰身高134厘米,东东比兰兰高5厘米｡东东身高是多少厘米?46.红领巾小学三年级有男生257人,女生235人,已经体检身体的有387人,没有体检的有多少人?47.图书室借出456本图书,还剩207本,现在又还回285本,图书室里现在有多少本?48.红领巾小学买来皮球380个,足球70个,课外活动时借出去423个,现在学校还剩多少个球?49.三(2)班捐赠图书400本后还剩273本,现在又买来125本,现在三(2)班有图书多少本?50.冬冬想买一辆310元的滑板车,已经攒了200元｡如果他每月攒30元,再攒几个月就够了?51.东方红小学的学生为希望工程共捐赠900本书,其中故事书326本,科技书475本,其余的是连环画｡连环画有多少本?52.一个正方形的边长是8厘米,如果把它的边长增加10厘米,那么它的周长增加多少厘米?53.一个长方形的操场周长是400米,长是宽的3倍,这个操场的长和宽各是多少米?54.有两个同样的长方形,长是8分米,宽是4分米｡如果把它们拼成一个长方形,这个长方形的周长是多少分米?如果拼成一个正方形,这个正方形的周长是多少分米?55.冬冬借了一本科技书有40页,一周后归还,他每天准备看6页,能按时归还吗?56.三(2)班有44人,老师准备分成8个小组讨论,每组可分几人,还剩几人?57.用一段长4米的布料可以裁5件同样大小的背心｡做一件背心要用多少布?58.一头小象重4吨,用一辆载重10吨的大货车运,一次最多能运几头小象?59.红旗连锁店原有瓶干632袋,卖出385袋,又运来200袋,这时店里有多少袋瓶干?60.学校买来810本练习册,一年级领走168本,二年级领走165本,还剩多少本?61.一列火车的第10号车厢原有116人,到某站后,有58人下车,有45人上本｡再开车时,这节车厢有多少人?62.一台VCD要238元,一台扫描仪要458元,爸爸带了800元钱｡够不够?63.张大爷打了700斤鱼,上午卖出523斤,下午比上午少卖出394斤｡(1)下午卖了多少斤?(2)这一天一共卖了多少斤?(3)还剩多少斤?64.小明和姐姐一道去书店,姐姐买一本《英语辞典》用去87元,小明买一本科技类的书用去24元｡姐姐付给收银员150元,应找回多少元?65.要给一幅长30厘米,宽26厘米的画做画框｡画框的周长至少是多少厘米?66.用两个长4厘米,宽3厘米的长方形拼成一个大长方形｡大长方形的周长可能是多少?67.向阳小学的操场是一个长方形,长100米､宽65米｡小强围着操场跑了2圈,小强一共跑了多少米?68.有学生31人,老师2人｡每船限乘4人,至少要租多少条小船?69.一副中国象棋16元,一副跳棋12元,一副围棋是一副中国象棋与一副跳棋价钱和的3倍｡小明带80元,买一副围棋够吗?70.同学们倡议捐400本图书给“手拉手”学校｡一至六年级各捐了58本,还要捐多少本就达到了400本?71.春季植树｡五年级植树12棵,六年级植树16棵,全校植树的棵数是五､六年级植树棵数的3倍,全校共植树多少棵?72.原来有30个同学,又走来15个｡这些同学5人排一行,可以排几行?73.用一根36厘米的铁丝正好围成一个正方形｡这个正方形的边长是多少厘米?74.一根绳子长25米,先剪下10米,剩下的每两米做一根短跳绳｡可以做多少根短跳绳,还剩多少米?75.把一张长36厘米,宽18厘米的长方形纸片,剪成两个最大的正方形,其中一个正方形的周长是多少厘米?76.一根绳子的5倍是45米,一根铁丝是这根绳子的7倍｡这根铁丝长多少米?77.修一条945米的路,第一个月修了354米,第二个月修了276米,第三个月还要修多少米才能修完?78.超市上午卖出大米153千克,下午比上午多卖出56袋,这一天工卖出大米多少袋?79.水果店运回54筐水果,其中48筐是苹果,其余是梨,问苹果的筐数是梨的多少倍?80.一辆汽车每小时行55千米,照这样计算,4小时可以行多少恰千米?81.饲养小组养32只白兔,26只黑兔,养的灰兔比白兔的总数少18只,养会灰兔多少只?82.修路队修一条路,已经修了550米,剩下的是已经修的4倍,剩下多少米?这条路全长多少米?83.明明有42张油票,芳芳的邮票比明明多14张｡他们一共有多少张邮票?84.校园里有水杉树24棵,松树的棵数是水杉数的3倍｡水杉和松树一共有多少棵?水杉树比松数少多少棵?85.黑天鹅有35只,白天鹅的只数比黑天鹅的3倍还多8只｡白天鹅有多少只?86.王阿姨去买3个足球,每个足球28元,付给营业员100元,找回多少元?87.一个长方形操场,长55米,宽35米,小华沿操场的边跑了两全圈,跑了多少米?88.三(1)班借29本,三(2)班借了38本,三(3)班借的书比一班和二班借的总数少34本,三(3)班借书多少本?89.水果店运来850千克苹果,上午卖286千克,下午卖354千克,还剩多少千克?90.一根绳子长25米,先剪下10米,剩下的每两米做一根短跳绳｡可以做多少根短跳绳,还剩多少米?91.小红､小英､小兰､小平四人进行一次乒乓球比赛｡每两人打一次,一共要打多少场?请把他们写出来｡92.水果店运回650千克苹果,卖出了385千克,有运回270千克｡水果店现在有苹果多少千克?93.红星小学三年级的同学乘四辆汽车去春游,前3辆车各坐68个同学,第4辆车坐74人,这次春游一共去了多少人?94.一篇文章600字,小芳的爸爸平均每分钟能打67个,9分钟能打完吗?95.操场上有26人在条高,跑步的人数比跳高的3被多10人,跑不的有多少人?96.超市上午卖出大米176袋,下午比上午多卖出43袋,这一天共卖出多少袋?97.一段铁丝长84厘米,做了一个边长是16厘米的正方形框架后,还剩多少厘米?98.少年宫的舞蹈队有48人,乐器队有27人,合唱队的人数是舞蹈队和乐器队的总数2倍｡合唱队有多少人?99.有38个糖果,平均分给7个小朋友,每人分几个?还剩几个?100.一根藏19米的绳子,先剪下8米,剩下的每两米做一根短跳绳｡可以做多少根段跳绳,还剩多少米?101.一部电视机荧光屏是个长方形,它的宽是34厘米,比长短10厘米,它的周长是多少?102.一块长方形菜地的长是75米,是宽是3倍,这块菜地的周长和占地面积各是多少?103.一块正方形菜园,它的四周用长24米的篱笆围了起来,求这块菜园的面积?104.一个长方形的人造滑冰场,宽是25米,长是宽的2倍少2米,求这个滑冰场的周长和面积各是多少?105.一个篮球场的长是26米,是宽的2倍,这个篮球场的周长是多少米?占地多少平方米?106.朱伟绕正方形操场跑了3圈共计1200米,求这个操场的每边长多少米?107.一个长方形长8厘米,宽3厘米,使这个长方形变成正方形,宽必须增加多少厘米?正方形的面积比这个长方形多多少平方厘米?108.有一个长方形草地,长14米,宽9米,现在要扩大草地,长增加7米,宽增加3米,现在的面积是原来的多少倍?原来草地一周的长比现在少多少米?109.动物园里有250只猴子,其中公猴子是母猴子的9倍,问动物园里有多少只公猴子?110.一个年级的小朋友排队,如果排成活9人一排,那么可以排38排,还剩下8人,如果排成8个人,能排几排,剩下多少人?111.三班小朋友做玩具,一共做了48个,送给幼儿园15个,其余的平均分给一年级3个班,每班可以分得几个?112.运动会上,小明3分钟跳绳297个,小红2分钟跳绳170个,平均一分钟内谁跳得快,快几个?113.一本《故事大王》共265页,小明打算4天看完,小花打算6天看完,小明平均每天至少要看多少页?小花呢?114.李大伯家养了200只鸡,第一天先卖128只,平均每只鸡可卖9元,李大伯这天能卖多少元?剩下的鸡第二天卖,每8只装一笼,能装多少笼?115.水果店运来一筐西瓜,一共920个,每筐可以装8个,现在有120个筐,够装吗?116.小明打字3分钟可以打279个,小华432个字4分钟打完,估计一下,谁打的快?如果小明打一篇文章,用了5分钟,这篇文章有多少字?117.鲜花店运来百合､玫瑰､菊花各600朵,每3朵百合､4朵玫瑰,5朵菊花可以扎成一束,问这些花最多可以扎成几束?118.4棵杨树苗48元,3棵松树苗63元,哪种树苗每棵的价钱贵一些?119.张教师带100元去商场买3个小足球,找回了7元,你能知道每个小足球多少元吗?120.李大伯家养了82只公鸡,母鸡558只,养的鸡是鸭的5倍,问养鸡､鸭共几只?121.一条公路长450米,在公路一边栽树,每隔5米栽一棵,工人要栽多少棵?(两头都要栽)122.服装厂的一个车间,从早上8时到15时一共做了285件衣服,他们平均每小时做多少件衣服? 123.姓赵的小马虎计算一位除法时,把除数7看成了9,结果商成了14,请你告诉他正确答案是多少?124.王老师买语文､数学和英语三种书一共用了703元,语文书每本9元,数学书每本6元,总共买了111本书,如果三种书买的数量一样多,问英语书多少钱?125.小学的开学时间是9月1日,放假时间是1月20日,问整个学期有多少天?126.小明吃水果,每天吃水果篮里的一半水果,吃到第四天时发现吃完后只剩下一个水果,问开始篮子里有多少水果?127.小明看到一个式子,如下:7□4÷8 问:□里面写数字多少,则商为两位数?128.在运动室里放篮球,一排放5个,一个架子上可以放6排,每三个架子占用一间运动室,问200个篮球需要放几间运动室?129.小朋友们摘苹果,5人摘了7天,一共摘了735千克苹果,问平均每人每天摘多少千克?130.小朋友们排队坐车,小赵排在每54位,小刘排在138位,每个车有6个座位,他们分别在第几辆车?131.一件衣服158元,一条裤子165元,所有的衣服都半价销售,问妈妈有900元,最多可以买几身衣服(注:衣服和裤子加起来是一身)?132.养牛场有5个牛棚,每个牛棚里有6头牛,每头牛平均一天吃草18千克,这些牛一天吃多少草?133.三年四班用200元班费买以下物品,跳绳4元,足球9元,跳棋6元,请问正好将钱用完,你的方案是什么?134.上题中每样东西都要买,而且要买的东西数量尽可能的多,请列出你的方案?。

六年级数学(上册)同步提优训练 1

第一周训练1、把A米长的彩带剪了4次，剪成同样长的小段，每小段占总长度的（），每小段长（）米。

2、王老师今年X岁，小明（X－20）岁，再过X年后，他们相差的岁数是（）。

A、20B、XC、X＋20D、2X3、一辆汽车从甲地去乙地，每小时行50千米，X小时到达，返回时每小时行60千米，提前2小时返回，那么两地的路程既可以表示（），还可以表示为（）。

4、解方程：2X＋16＝64 3.2X－2×6＝43.2列方程解决问题。

5、小张与小李在400米的环形跑道上跑步。

两人从同一地点出发，同向而行，经过20分钟小张第一次追上小李。

已知小李每分钟跑150米，那么小张每分钟跑多少米？6、同学们去划船，如果一条船坐5人，就有3人没有上船；如果一条船坐6人，就有一条船空出5个座位。

共租了几条船？共有学生多少人？7、甲桶是乙桶的1.2倍，如果甲桶倒6千克给乙桶，两桶油就同样重，原来两桶油各重多少千克？8、一批香蕉，卖掉140千克，原来香蕉的重量是剩下重量的5倍，原来香蕉多少千克？9、甲乙两人加工一批服装，已知甲8天加工的套数比乙5天加工的套数多20套，如果乙每天加工的套数是甲的1.2倍，那么甲每天加工多少套？附加题：1、现有面值5元和10元的人民币25张，共计210元，5元的人民币有多少张？10元的人民币有多少张？2、甲仓原有粮食44吨，乙仓原有粮食83吨。

现在甲仓每天继续存入3吨，乙他每天继续存入7吨，多少天后乙仓存粮总数是甲仓的2倍？3、甲、乙两桶各有橘子若干千克，甲桶中的橘子数量是乙桶中的4倍。

如果从甲桶取出150千克，乙桶取出30千克，甲乙两桶中的橘子重量正好相等，甲桶原有橘子多少千克？乙桶原有橘子多少千克？第二周训练1、一个五位数7abcd ，如果设四位数abcd 为x ，则这个五位数用含x 的式子表示是（）。

2、一个学生的准考证号码是个四位数，其个位数字是十位数字的3倍，十位数字是百位数字的3倍，这个四位数的各位上的数字和是15，这个学生得准考证号是（）。

绕口令训练 1

鸡蛋碰破石头角
• 鸡蛋碰破石头角，老鼠咬着猫子脚。板凳爬上墙，石磙飞过河。先生我，后生哥，妹妹先把十岁过。姐姐带上老花镜，八十岁的婆婆绣花朵，白天伸手不见掌，黑太阳晒死我。
妹子盖被子
• 妹子盖被子，被子盖妹子。 • 妹子要盖被子，被子盖住妹子。 • 妹子盖被子是被子盖妹子，被子盖妹子是妹子盖被子。
阿姨摘果一二三四五六七，七六五四三二一，七个阿姨来摘果，七个花篮手中提。七个果子摆七样：苹果、桃儿、石榴、柿子、李子、栗子、梨。（o）墨与馍老伯伯卖墨，老婆婆卖馍，老婆婆卖馍买墨，老伯伯卖墨买馍。墨换馍老伯伯有馍，馍换墨老婆婆有墨。
• 婆婆和嬷嬷，来到山坡坡，婆婆默默采蘑菇，嬷嬷默默拔萝卜。婆婆拿了一个破簸箕，嬷嬷带了一个薄笸箩，婆婆采了半簸箕小蘑菇，嬷嬷拔了一笸箩大萝卜。婆婆采了蘑菇换饽饽，嬷嬷卖了萝声调、轻声、儿化、变调等顺序编辑了各种类型的有关正音、吐字、声音气息的运用、念词和朗诵的纯技术性训练的绕口令，主要是为了帮助大家训练口齿灵活、语音准确、吐字流畅、颗粒饱满、圆润集中、字正腔圆、助于表达。
这些绕口令练起来有些绕口、难发，但它却是学说好普通话必不可少的练习材料，通过绕口令的练习不仅可以加强咬字器官的力度和提高咬字器官的灵活度，同时也可以有效地锻炼呼吸控制能力。

牛扣扣使劲揪，小妞扣扣对准扣眼扣，小牛和小妞，谁学会了扣纽扣？

《气球换皮球》
小齐吹气球，小于玩皮球。小齐要拿气球换小于的皮球，小于不拿皮球换小齐的气球。
九月九，九个酒迷喝醉酒。九个酒杯九杯酒，九个酒迷喝九口。喝罢九口酒，又倒九杯酒。九个酒迷端起酒， “咕咚、咕咚”又九口。九杯酒，酒九口，喝罢九个酒迷醉了酒。

二年级下册解决问题专项练习1(可编辑修改word版)

解决问题专项训练11.原有32人在看篮球比赛，走了8人，又来了12人，现在看比赛的有多少人?2.二(1)班有男生27人，女生有25人，有36人参加比赛，有多少人没参加比赛?3.李明买了7盒牛奶，每盒8瓶，喝了17瓶，还剩多少瓶?4.学校用80元买体育用品,买篮球用去60元,剩下的买5元一根的跳绳,能买多少根?5.妈妈买米用了35元，买油用了17元，给售货员阿姨50元，够吗?6.兔妈妈一共拔了23个萝卜，小白兔一天要吃8个萝卜，吃了2天，还剩多少个萝卜?7.陈老师去买杯子。

如果买6元一个的杯子，需要36元。

如果换买4元一个的杯子，需要多少钱?8.里有2束玫瑰花，每束9枝，还有6枝百合花。

玫瑰花的枝数是百合花的几倍?9.二(1)班去郊游，每只大船坐4人，每只小船只能坐3人，如果同学们都坐大船，需要6只大船，但是如果全部坐小船，需要几只小船呢?解决问题专项训练21.游戏小组共有56人，平均分成8组，如果每组中女生有4人，每组中男生有多少人?2.一辆火车上原有967人。

先下去288人，后来又上来105人。

火车上现在有多少人?3.食堂有30袋面粉，又买了3车，每车9袋面粉，现在共有多少袋面粉?4.某工厂去运煤，第一天运了2车，每车5吨，第二天运了13吨，两天共运回多少吨煤?5.一本书75页,小红已经看了43页,剩下的4天看完,平均每天看多少页?6.王师傅要生产80个零件,已经生产了32个,剩下的每天生产8个,还需要多少天?7.李师傅上午生产了11个零件,上午生产了13个零件,每6个零件装一盒,一天生产的零件能装多少盒?8.服装厂要加工60套西服,已经加工了30套,剩下的5天完成,平均每天生产多少套?9.8个同学帮助学校搬砖,每次搬5块,一辆手推车一次运45块,这些同学和手推车一次共运多少块?解决问题专项训练31. 育才小学二年级有学生266名，三年级有学生251名，四年级有学生297名，育才小学二、三、四年级共有学生多少名?2.同学们拍球。

膀胱训练(1)

对于较易健忘的患者，可以指导当日每次上厕所时进行锻炼。
整理课件
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盆底肌锻炼——提肛锻炼
提肛肌：提肛肌和它后方的尾骨肌及其上下方的筋膜共同构成了盆膈，起到承托腹腔脏器，协助排便和分娩的作用；
提肛肌由前列腺提肌（男性），耻骨阴道肌（女性），耻骨直肠肌，耻尾肌以及髂尾肌组成；
提肛肌左右各一，两侧在肛管处连合成一个漏斗状的盆底，将骨盆口大部分封闭；
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患者开始时可以模仿以下动作 1、类似终断排尿的过程； 2、类似抑制肛门排气的过程；
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应遵循个体化方案，对于初学者来说，开始可以每组收缩5次，（每次收缩5秒，放松5秒），每隔一小时做一组。患者可以在非剧烈运动下的任何状态进行锻炼，如果练到腰酸背疼，则说明你锻炼的肌肉不正确。
因此，我们应该高度重视指导前列腺患者进行必要的提肛肌锻炼。
另外，女性压力性尿失禁患者也可以通过锻炼提肛肌达到治疗及减轻症状的作用。
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提肛锻炼——方法
提肛就是有规律地往上提收肛门，然后放松，一提一松就是提肛运动；
一般建议患者每日三次，睡醒起床前一次，睡前一次，白天一次。
每次收缩放松至少15-30次，每次提肛坚持10秒。
盆底肌肉锻炼可以治疗急迫性尿失禁或混合性尿失禁，对于男性前列腺术后的尿失禁也有一定帮助。
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具体方法：盆底肌肉锻炼的方法简单而言就是训练提肛肌群的收缩，就好像人们在控制排尿或大便时的动作一样，可以同时伴有轻微的腹部、臀部以及大腿内侧肌群的收缩，但必须是以盆底提肛肌群收缩为主。
病因：①先天性疾患，如尿道上裂； ②创伤，如产伤，骨盆骨折等； ③手术，成人为前列腺手术、尿道狭窄修补术等；儿童为后尿道瓣膜手术等； ④各种因引起的神经原性膀胱。

四年级语文上册课内阅读训练作业1

四年级语文上册课内阅读训练1、观潮午后一点左右，从远处传来隆隆的响声，好像闷（mēn mân）雷滚动。

顿时人声鼎沸(fâi fú)，有人告诉我们，潮来了！我们踮着脚往东望去，江面还是风平浪静，看不出有什么变化。

过了一会儿，响声越来越大，只见东边水天相接的地方出现了一条白线，人们又沸腾起来那条白线很快地向我们移来，逐(zú zhú)渐（），（），（）江面。

再近些，只见白浪翻滚，形成一堵（）。

浪潮越来越近，犹如千万匹白色战马（），（）地飞奔（bēn bân）而来；那声音如同（），好像大地都被震得颤（chàn zhân）动起来。

1、我会在文段括号内选出合适的词语划去不正确的读音。

2、这段话是按照由到的顺序,从、这两方面来描写大潮来时的景象，使人如闻其声，如见其景。

3、按课文内容在括号里填上词语。

4、在文中找出相应的反义词填空。

鸦雀无声（）波涛汹涌（）平静（）5、这段中分别把浪潮比作、和。

6、画波浪线的句子写得好吗？为什么？答：7、你从划横线的句子体会到什么？答：8、文中写声音的词是（）（）( )( ),我还能写出形容声音大的四字词语：9、从第一段话中的“”“”两个词可以看出观潮人群的热情之高。

10、读了上面几段话，你能用一个词或一句话来写出你对钱塘江大潮的感受吗？答：11、请你修改病句：读了《观潮》之后，感受到钱塘江大潮的奇特和壮观。

改正：- 1 -初周围是（寂静宁静）的。

后来忽然起了一声鸟叫。

我们把手一拍，便看见一只大鸟飞了起来。

接着又看见第二只、第三只。

我们（继续陆续）拍掌，树上就变得热闹了，到处（chǔ chù）都是鸟声，到处都是鸟影。

大的小的花的黑的有的站在树枝上叫有的飞起来有的在扑翅膀。

我注意地看着，眼睛应（yīng yìng）接不暇，看清楚了这只，又错过了那只，看见那只，另一只又飞起来了。