选择填空专项训练题
语文选词填空题专项训练
..语文选词填空题专项训练应试技巧技巧 1：拿捏词义的轻重近义词虽然表达的意思是相近的，但在表现事物的某种特征或程度上，往往有轻重之别。
我们辨析时就要注意区别。
例如：“损坏”“毁坏”“破坏”其表现的程度就层层升级，依次加重。
再如：“陌生”与“生疏”，两个词都有“不熟悉”的意思。
但“陌生”表示对一个人或事物因初次接触而不熟悉；“生疏”则可表示对一个人或事物以前熟悉或曾经有过接触，因相隔时间长变得不熟悉了，或者因接触时间不长次数不多所以不熟悉。
技巧 2：限定词义的范围有些近义词虽指同一事物，但所指范围却有大有小，这种分别也是辨析近义词的一个标准。
例如：“边疆”“边境”“边界”范围是越来越小。
“边疆”指远离中心的地方，靠近国界的领土，范围大，同时这个概念比较抽象；“边境”指靠近国界的地方，范围较小，同时这个概念比较具体。
“边界”仅指一条界限，范围最小。
再如：“年纪”与“年龄” 。
“年纪”专指人的年龄，词义范围小，“年龄”指人或动物植物已生存的年数，词义范围大。
如：（1）校园里的两棵银杏树，看上去它们的年龄足有千年。
（2）你这把年纪还带头干活，我们这些年青人哪敢怠慢？这里的例（1）的“年龄”就不能换成“年纪”。
技巧 3：揣摩词义侧重有些近义词虽指意义相似，但由于词素构成不同往往所指的侧重点不同，使用就有所不同。
例如：“景色”与“景点” ，“景色”侧重指景象、情景。
“景点”侧重指景物的地点。
再如：“诡辩”与“狡辩”都指无理强辩，但“诡辩”着重在“诡”，即欺诈、怪异，“诡辩”就是用欺诈的手段，奇怪的言辞，似是而非的论证来为自己的谬论辩护。
“狡辩”着重在“狡” ，即不老实，耍花招，“狡辩”是歪曲事实，狡猾的为自己的错误言行辩解。
技巧 4：分清词性和语法功能近义词一般词性相同，但也有词性不同或不完全相同的。
例如“诞生”与“诞辰”，前者为动词，后者为名词，词性不同，用法自然就不同了。
也有因词性不同，句法功能也就不同，如“突然”( 形容词，作状、谓、定语) ，“猛然” ( 副词，作状语 ) 。
八年级上册比较级及最高级专项训练试题附答案
2019-2020年八年级上册比较级和最高级专项训练试题附答案一、选择填空1. Which does Jimmy like ,Chinese or Art? A.well B.best C.better D.much2. The Changjiang River is one of in the world.A.the longest riverB.longest riversC.the longest riversD.longer rivers3.of the two women is Mrs Brown.A.The beautifulB.The more beautifulC.More beautifulD.The most beautiful4. My mooncake is nicer his. A.like B.with C.for D.than5. You are fatter than . A.he B.his C.him D.he is tall6. He jumps of the three. A.far B.further C.farthest D.furthest7. My hair is longer than . A.my sister B.Kate C.my brother ’ s D.Lucys ’8. There are paper here .Please bring some. A.little B.less C.fewer D.a little9. The pen is than that one. A.more cheap B.cheap C.much cheaper D.quite cheaper10.Tom speaks Chinese better than Jimmy. A.more B.very C.a lot of D.much11.There are girls in Class Two than in Class Four. A.more B.nicest C.most D.best12.It ’ s toofor you to do that. A.easy B.more dangerous C.harder D.the easiest13.Who has apples now,Jim,Lily or Lucy? A.much B.biggest C.better D.the most14.You have more rulers than me.But are nicer than .A. mine,yoursB.mine,yourC.my,yoursD.my,your15.Tingting is than Meimei,but Meimei is than Tingting.A.tall,strongerB.taller,strongestC.tallest,strongD.taller,stronger16.Mother is in my family. A.busy B.busier C.the busiest D.more busy17.There are in the park on Sunday.A. more childrenB.a lot of peopleC.much men and womenD.many peoples18.The dumplings are than the noodles,I think.A.more nicerB.much deliciousC.very niceD.much more delicious19.She is than me at drawings. A.better B.best C.good D.harder20.-This blue sweater is too big for me .-Will you please show me a one?A.smallB.smallerC.the smallestD.smallest21.I find English spelling . A.happy B.happiest C.happier D.happily22.No one is Mary in the class. A.so tallest as B.as taller as C.so high as D.so tall as二、用所给词的适当形式填空1.Your classroom is (wide)and (bright)than ours.2.There are (few)hours of sunlight a day in winter than in summer.3.Which do you like (well),maths or chemistry?4.This is the (good)film I have ever seen.5.Africa is the second (large)continent.6.What he said made his mother much (angry).7.I ’ m not as (careful)as he.8.We’ ve got as (many)books as we need.9.Pratice as (much)as you can.10.They have done (much)work with (little)money.11.You ’ re the (kind)person I ’ ve evert. me12.He is(young)than his two sisters.13.The(old)I get, the(strong)I seem to feel.14.The weather is getting(warm)and(warm).15.The patient is no(well)than before.16.You are far(polite)than you were.17.Summer is(hot)season of the year.18.I can do it well with even(little)money.The keys:一、选择填空1 2 3 4 5 6 7 8 9 10C C BD A C C A C D11 12 13 14 15 16 17 18 19 20A A D A D CB D A B21 22A D二、用所给词的适当形式填空1.wider, brighter2. fewer3. better4. best5. largest6. angrier7. careful8. many9. much10. more, less11.kindest12. younger13. older, stronger14. warmer ,warmer15. better16. more polite17. the hottest18. less。
五年级数学专项训练填空题判断题选择题
五年级数学专项训练一、填空题。
1、在12÷6=2中，（）是（）的因数，（）是（）的倍数。
2、30的因数有（）；36的因数有（）。
3、一个数的最小因数是（），最大的因数是（），一个数的因数的个数是（）的。
4、 5的倍数有（）；55以内7的倍数有（）。
5、一个数的最小倍数是（），一个数的倍数的个数是（）的。
6、在7、14、21、42这四个数中，（）是42的因数，又是7的倍数，还是2和3的倍数。
7、一个数的最大因数和最小倍数都是18，这个数是（）；（）的最小倍数是1。
8、自然数中，是2的倍数的数叫做（），不是2的倍数的数叫做（）；最小的偶数是（），最小的奇数是（）。
9、个位上是（）或（）的数都是5的倍数。
10一个数（）是3的倍数，这个数就是3的倍数。
11、既是2和5的倍数，又是3的倍数的最小两位数是（），最小三位数是（）。
12、在□里填上一个数字，使每个数都是3的倍数，各有几种填法？□7 4□2 □44 65□ 12□113、一个数，如果只有1和它本身两个因数，这样的数叫做（），或（）。
一个数，如果除了1和它的本身还的别的因数，这样的数叫做（）。
（）既不是质数也不是合数。
14、有两个质数，它们的和是10，积是21，这两个质数分别是（）、（）。
15、有两个质数，它们的和是20，积是91，这两个质数分别是（）、（）。
16、最小的质数与最小的合数的和是（）。
17、长方体和正方体都的（）面，（）个顶点，（）条棱。
长方体每个面都是（）形，特殊情况有两个面是（）形，长方体最多有（）个面是长方形，长方形的12条棱可以分成（）组，相对的棱的（）相等。
18、（）叫做长方体的长、宽、高。
19、在长方体中，和长平行的棱的（）条，和宽相交并垂直的棱有（）条，和高平行的棱的（）条。
20、物体所占空间的大小叫做物体的（），箱子、仓库等所能容纳物体的体积通常叫做它的（）。
21、一个手指尖的体积大约是（）。
一个粉笔盒的体积接近于（）。
中考数学选择题、填空题专项训练
中考数学选择题、填空题专项训练一．选择题1．不等式组的解集是x＞1，则m的取值范围是（）A．m≥1 B．m≤1 C．m≥0 D．m≤02．如图，把一张矩形纸片ABCD沿EF折叠后，点A落在CD边上的点A′处，点B落在点B′处，若∠2=40°，则图中∠1的度数为（）A．115°B．120°C．130° D．140°3．聊城“水城之眼”摩天轮是亚洲三大摩天轮之一，也是全球首座建筑与摩天轮相结合的城市地标，如图，点O是摩天轮的圆心，长为110米的AB是其垂直地面的直径，小莹在地面C点处利用测角仪测得摩天轮的最高点A的仰角为33°，测得圆心O的仰角为21°，则小莹所在C点到直径AB所在直线的距离约为（tan33°≈0.65，tan21°≈0.38）（）A．169米B．204米C．240米D．407米4．在平面直角坐标系中有三个点A（1，﹣1）、B（﹣1，﹣1）、C（0，1），点P （0，2）关于A的对称点为P1，P1关于B的对称点P2，P2关于C的对称点为P3，按此规律继续以A、B、C为对称中心重复前面的操作，依次得到P4，P5，P6，…，则点P2015的坐标是（）A．（0，0） B．（0，2） C．（2，﹣4）D．（﹣4，2）5．已知二次函数y=ax2+bx+c+2的图象如图所示，顶点为（﹣1，0），下列结论：①abc＜0；②b2﹣4ac=0；③a＞2；④4a﹣2b+c＞0．其中正确结论的个数是（）A．1 B．2 C．3 D．46．如图，在正方形ABCD的每个顶点上写一个数，把这个正方形每条边的两端点上的数加起来，将和写在这条边上，已知AB上的数是3，BC上的数是7，CD 上的数是12，则AD上的数是（）A．2 B．7 C．8 D．157．从1开始得到如下的一列数：1，2，4，8，16，22，24，28，…其中每一个数加上自己的个位数，成为下一个数，上述一列数中小于100的个数为（）A．21 B．22 C．23 D．998．如图，已知顶点为（﹣3，﹣6）的抛物线y=ax2+bx+c经过点（﹣1，﹣4），则下列结论中错误的是（）A．b2＞4acB．ax2+bx+c≥﹣6C．若点（﹣2，m），（﹣5，n）在抛物线上，则m＞nD．关于x的一元二次方程ax2+bx+c=﹣4的两根为﹣5和﹣19．如图，Rt△ABC中∠C=90°，∠BAC=30°，AB=8，以2为边长的正方形DEFG的一边GD在直线AB上，且点D与点A重合，现将正方形DEFG沿A﹣B的方向以每秒1个单位的速度匀速运动，当点D与点B重合时停止，则在这个运动过程中，正方形DEFG与△ABC的重合部分的面积S与运动时间t之间的函数关系图象大致是（）A．B．C．D．10．下面每个表格中的四个数都是按相同规律填写的：根据此规律确定x的值为（）A．135 B．170 C．209 D．252二．填空题11．如图，随机地闭合开关S1，S2，S3，S4，S5中的三个，能够使灯泡L1，L2同时发光的概率是．12．如图，在平面直角坐标系中，边长为1的正方形OA1B1C1的两边在坐标轴上，以它的对角线OB1为边作正方形OB1B2C2，再以正方形OB1B2C2的对角线OB2为边作正方形OB2B3C3，以此类推…、则正方形OB2015B2016C2016的顶点B2016的坐标是．13．如图，在菱形ABCD中，AB=6，∠DAB=60°，AE分别交BC、BD于点E、F，CE=2，连接CF，以下结论：①△ABF≌△CBF；②点E到AB的距离是2；③tan ∠DCF=；④△ABF的面积为．其中一定成立的是（把所有正确结论的序号都填在横线上）．14．如图，正△ABC的边长为2，以BC边上的高AB1为边作正△AB1C1，△ABC 与△AB1C1公共部分的面积记为S1；再以正△AB1C1边B1C1上的高AB2为边作正△AB2C2，△AB1C1与△AB2C2公共部分的面积记为S2；…，以此类推，则S n=．（用含n的式子表示）15．如图，圆内接四边形ABCD两组对边的延长线分别相交于点E，F，且∠A=55°，∠E=30°，则∠F=．16．如图，在一次数学活动课上，张明用17个边长为1的小正方体搭成了一个几何体，然后他请王亮用其他同样的小正方体在旁边再搭一个几何体，使王亮所搭几何体恰好可以和张明所搭几何体拼成一个无缝隙的大长方体（不改变张明所搭几何体的形状），那么王亮至少还需要个小立方体，王亮所搭几何体的表面积为．17．如图，等腰直角三角形BDC的顶点D在等边三角形ABC的内部，∠BDC=90°，连接AD，过点D作一条直线将△ABD分割成两个等腰三角形，则分割出的这两个等腰三角形的顶角分别是度．18．如图，直线l：y=﹣x+1与坐标轴交于A，B两点，点M（m，0）是x轴上一动点，以点M为圆心，2个单位长度为半径作⊙M，当⊙M与直线l相切时，则m的值为．。
小学五年级数学下册期末专项训练题(353)
小学五年级数学下册期末专项训练题（353）好的，以下是针对小学五年级数学下册期末专项训练题（353）的内容：一、选择题（每题2分，共10分）1. 一个数的5倍是40，这个数是：A. 8B. 7C. 10D. 52. 一个长方体的长是6厘米，宽是4厘米，高是3厘米，它的体积是：A. 72立方厘米B. 48立方厘米C. 24立方厘米D. 36立方厘米3. 一个数除以6，商是5，余数是1，这个数是：A. 31B. 35C. 30D. 364. 一个分数的分子是10，分母是15，化简后是：A. 2/3B. 2/5C. 4/3D. 5/35. 一个数的3倍是45，这个数是：A. 15B. 20C. 30D. 45二、填空题（每题2分，共10分）1. 一个数的4倍是80，这个数是______。
2. 一个长方体的长是8厘米，宽是5厘米，高是3厘米，它的表面积是______平方厘米。
3. 一个数除以7，商是6，余数是2，这个数是______。
4. 一个分数的分子是15，分母是20，化简后是______。
5. 一个数的5倍是100，这个数是______。
三、计算题（每题5分，共20分）1. 计算：(36+24)÷6×82. 计算：(48-36)×(5+3)3. 计算：(72÷8)×(9+6)4. 计算：(56-28)÷7×4四、应用题（每题10分，共30分）1. 一个长方形的长是10米，宽是6米，求这个长方形的面积和周长。
2. 一个长方体的长是12厘米，宽是8厘米，高是5厘米，求这个长方体的体积和表面积。
3. 小明买了3个苹果和5个梨，一共花了21元。
已知每个苹果的价格是3元，求每个梨的价格。
五、附加题（10分）1. 一个数的6倍是72，这个数的8倍是多少？以上就是小学五年级数学下册期末专项训练题（353）的内容，题型包括选择题、填空题、计算题、应用题和附加题，涵盖了五年级数学的主要知识点，难度适中，适合期末复习使用。
选择填空100题专项训练
选择填空专项练习1.Every four years, ______people watch the Olympic Games.A. million ofB. millions ofC. two millionsD. two millions of2.In our class, ______of the students ______ girls.A. three-fifths; areB. three-fifth ; isC. three-fifth ; areD. three -fifths, is3.Shenzhen is ______the south of China.A. inB. onC. toD. at4.She usually takes a shower_______8.00_______the evening.A. from ; inB. from; ofC. at ; inD. at; of5.Tim was born ______the 2nd_____June,1995.A. on ; ofB. on; inC. in; ofD. in ; in6.Alice is learning ______French. She is sure French is _____useful language.A. / ; anB. /; aC. the; aD. the; an7.---I feel a bit hungry. ---Why don’t you have ______bread?A. anyB. someC. littleD. a8.Ann put on a new dress and looked at _____in the mirror.A. herB. hersC. sheD. herself9.--How do you get _____ school? ---_______bus. My home is far _____ school.A. to; By; fromB. by; To; awayC. at; At; fromD. on; At; away10.I will wait _____you _____the bus station this afternoon.A. for ; atB. with; itC. for ; inD. of ; at11.I hear he is ill in hospital. You’d better go _____see him at once.A. soB. orC. andD. but12.All the food ______ready now. Help yourselves, please.A. isB. amC. areD. be13.Everyone knows that these kinds of jeans _____in the USA.A. is makingB. makesC. madeD. are made14.Everything______to grow in spring every year.A. beginB. beginsC. is beginningD. will begin15.We should be ______to people.A. friendB. friendsC. friendlyD. a friend16.---What’s your father? ----_______.A. He is a firemanB. He is niceC. He is cookingD. He works in a shop17.Sue is working very _____ recently.A. goodB. fineC. hardlyD. hard18.--____shall we meet at the park?---What about half past eight?A. WhatB. WhenC. WhereD. Which19.Take exercise every day, ______you’ll become stronger and healthier.A. orB. andC. butD. while20.Look at the clouds in the sky! I guess it _____later on.A. is going to rainB. rainingC. rainsD. rained21.—There should be ______”h” in the word “hour”.---You’re right. And_____ “h” is the first letter of the word.A. a; theB. an; anC. an; theD. the; the22.He read something interesting in today’s newspaper, _____he ?A. doesn’tB. didn’tC. isn’tD. wasn’t23.--_____do you go to the cinema? ---Once a week.A. How manyB. How oftenC. How soonD. How long24.She will give the book to you when she ______you tomorrow.A. will seeB. seesC. seeD.saw25.---Does Mary enjoy ______a kite? ---Yes. Look! She is enjoying _____on the grass.A. flying; herselfB. to fly; themselvesC. flying; themselvesD. to fly; herself26.—What time does your father leave home?---______half past six _____every morning.A. At;/B. In;/C. On; inD. At; in27. It ______rains in London, so you’d better take an umbrella with you when you go out.A. neverB. alwaysC. seldomD. sometimes28.I like listening to music, _____my sister doesn’t think it’s interesting.A. soB. andC. butD. because29.My mother isn’t at home today, ______I have to _____my little brother.A. or; look forB. and; look atC. so; look afterD. but; look up30.---______the young man work as a doctor in that hospital? ---_______.A. Is; Yes, he isB. Does; No, he isn’tC. Is; No, he isn’tD. Does; Yes, he does31.Sometimes I talk about football with my classmates ______to school.A. on my wayB. by the wayC. in the wayD. in this way32.How long did it _______you from here to school?.A. payB. spendC. costD. take33.—How often do you visit your grandfather? ---________.A. In three daysB. Once a weekC. Last SundayD. Two days ago34. Peter ___________to university after he leaves school.A. goesB. goC. will goD. went35.I hope I can ______ soon.A. hear of youB. hear of your letterC. hear from your letterD. hear from you36.My mother is ______science teacher, and my father is ______ architect.A. a ; anB. a; aC. an; theD. an; an37.---______is ten plus ten? ----Ten plus ten is twenty..A. How manyB. How muchC. What isD. Both B and C38.You should _____your mother ____housework in your free time.A. help; to doB. help; doingC. to help; doD. to help; to do39.Write your names on the piece of paper, _____the student in the last row.A. start fromB. starting fromC. to start fromD. to starting from40.Tom thinks _____easy _____the work in two days.A. it; finishB. that; to finishC. it; to finishD. that; finish41.---What about______? ----But you just borrowed 100 yuan from me yesterday.A. lend some money meB. lending me some moneyC. lending some money for meD. to lend some money to me42.Tomorrow is Lucy’s ______ birthday.A. twelfthB. the twelfthC. twelveD. the twelve43.---_______did you _____the new computer?---Nearly 3,000 yuan.A. How much; takeB. How many; costC. How many; spend onD. How much; pay for44.—When did you visit China? ---_____.A. In two yearsB. Two years agoC. For two yearsD. Two years.45.Subtract3_______9,and______is it?A. by; whatB. with; how muchC. from; whatD. by; how many46.I saw the train ______into the station and then the passengers______.A. came; get offB. come; got offC. come; getting offD. come; get off47._____late for class again.A. Don’tB. NotC. Don’t beD. Not be48.The story _____about fifty years ago.A. happened toB. happenedC. takes placeD. took place of49.The old man can make nine _____ yuan a month by selling empty bottles.A. hundred ofB. hundreds ofC. hundredD. hundreds50.---When will you ______ Shenzhen?---We will _____there at about 10:00 this evening.A. arrive in; arrive atB. arrive at; arriveC. arrive in; arriveD. arrive; arrive in51.There______a basketball game on TV tomorrow evening.A. is going to haveB. will beC. will haveD. are52.---I’m thirsty. Could I drink______? ---No, the doctor said you shouldn’t drink______.A. something; somethingB. anything; anythingC. something; anythingD. anything; something53.---You’d better ____me before 9:00._______I will be busy.---Ok.A. not call; MaybeB. not calling; MaybeC. don’t call; ProbablyD. not calling; Probably54.---Stop _____any noise. ____ is knocking at the door. ---Who can it be?A. making; AnyoneB. to make; AnyoneC. to make; SomeoneD. making; Someone55.---Would you like to go swimming with me this afternoon?---________.But I have a lot of homework to do.A. Yes, I’d love toB. No, thanksC. Yes, I wouldD. No, I wouldn’t56.---Would you like ______orange juice? ---No ,thanks. I would like ______ milk.A. any; someB. some; someC. some; anyD. any; any57.Don’t forget _____me ____the letter.A. helping; postB. to help; postC. helping; to postD. to help; posted58.Please_____the invitation as soon as possible.A. answer toB. to answerC. replyD. reply to59.—Who taught you English?----_________!I learned it all by myself.A. EverybodyB. AnybodyC. SomebodyD. Nobody60.If Tom ______to the party next Sunday, I_____ him to sing a song for us.A. will come; will inviteB. comes; am going to inviteC. comes; inviteD. will come; invites61.---When will you finish _____your homework?---Don’t always urge(催促) me! You made me ______another mistake.A. to do; makeB. doing; to makeC. doing; makeD. to do; to make62.The plane was flying ____the clouds.A. onB. in front ofC. aboveD. next tost Saturday, Mrs Green went to the market, _____some bananas and then visited her cousin.A. boughtB. buyingC. to buyD. buy64._______my decision about that thing.A. There isB. These areC. Here areD. Here is65.---__________ ---That’s a good idea.A. Let’s call the police.B. What about calling the police?C. We had better call the police.D. All of the above.66.---When I passed by the office, I saw your father _____with our English teacher.---My father? What could they_____?A. talk; talk withB. talking; talk aboutC. to talk; talk aboutD. talk; talk with67.Jenny will be back ______ an hour, but Tom will return _______ one o’clock.A. in; afterB. after; afterC. in; inD. in; at68.Now class, please turn to ________and read after me..A. Page 100B. page 100C. 100 pageD. 100 pages69.He said he would come back _____an hour, but he came back ____three days.A. in; inB. after; inC. at; afterD. in; after70.---I lost my new bike. ---Your mother ____angry with you after knowing that.A. willB. is going to beC. wasD. is71.There is a picture ____the wall, and some trees are _____the picture.A. on; inB. in; inC. in; onD. on; on72._______open the door when a stranger knocks at the door.A. Don’tB. Won’tC. NotD. Not73.About____of the workers in the factory are young people.A. second thirdB. second thirdsC. two thirdsD. two third74.We can deal with this matter _____many ways.A. atB. onC. inD. by75.They arrived _____Beijing ____the morning of May 25.A. at; onB. in; inC. at; inD. in; on76.My father ____while he was watching TV just now.A. fell asleepB. went to bedC. sleptD. was sleep77.---______Jenny? ----There was something wrong ____her leg.A. What’s wrong with; onB. What’s the matter with; inC. What happened to; withD. How was; of78.______my suggestions for your plan.A. Here isB. This isC. There areD. Here are79.---Why did you make me ____the truth at the meeting?---Because you could hurt your best friend.A. stop to tellB. stop tellingC. to stop tellingD. to stop to tell80.---Let’s have dinner at that restaurant after school. ---____.A. Shall we?B. You’re welcomeC. Good ideaD. That’s ok81.Mrs Smith has ________.A. a 8 years old boyB. a 8-year-old boyC. an 8-year-old boyD. a 8 years old boy82.Thank you _____me to your birthday party.A. to inviteB. inviteC. for invitingD. to inviting83.There are _______chapters in this textbook. _______is the easiest..A. nine; The ninthB. the nine ; The ninthC. nine; the ninethD. ninth; The nine84.---______is it from the shop to the bus station? ---It’s three minutes’ walk.A. How longB. How muchC. How farD. How soon85.______coat do you like better ,the blue one or the red one?A. WhatB. WhichC. ThatD. This86.Coke Cola is one of _____in summer.A. most popular drinkB. most popular drinksC. the more popular drinkD. the most popular drinks87.Miss Li teaches ____English. We are all interested in _____ lessons.A. our; sheB. our; herC. us; sheD. us; her88.______is great _____your call at the moment.A. It; getB. That; to getC. It; to getD. That; get89.Michael showed_________.A. his new shoes for meB. his new shoes to meC. his new shoes meD. me to his new shoes90.---Why do you answer my phone after so long a time? ---Sorry, I ______it just now.A. don’t hearB. heardC. didn’t hearD. heare and help me! I really don’t know _____the hard work.A. how to do withB. what to deal withC. how to deal withD. to do what with92.The game is very ______,and lots of people ____playing it.A. interesting; are keen onB. interested; are keen onC .keen; are interested in D. keen; are interesting in93.A clock has no feet ______legs. A clock has no eyes _______no ears.A. or; andB. and; orC. or; orD. and; and94.---Why did you leave before finishing ______the classroom yesterday afternoon?---______I didn’t feel well.A. clean; AndB. cleaning; BecauseC. cleaning; ButD. to clean; So95.---Did you see my purse, Mom? I can’t _____it anywhere.----Why don’t you _____it under your bed?A. find; look forB. look for; look forC. see; findD. find out; see96.Mrs Green has five children ,and her ____child is _____ now.A. five; eight years oldB. fifth; eight years oldC. five; eight-years-oldD. fifth; eight-year-old97.There is going to ________a class meeting in our class this afternoon.A. isB. beC. hasD. have98.I find my answer ______.Can I _____it with you?A. right; helpB. wrong; checkC. right; askD. wrong; argue99.Walk______the bridge, and you will find the________ Middle School.A. on; NO. SevenB. in; SevenC. across; SeventhD. cross; Seventh 100.I enjoy ____football matches with my best friends, and we’d like _____ them.A. watch; discussingB. watching; to discussC. to watch; to discussD. watching; discussKeys1-5 BAACA 6-10 BBDAA 11-15 CADBC 16-20 ADBBA21-25 CBBBA 26-30ABCCD 31-35 ADBCD 36-40 ADABC41-45 BADBC 46-50 DCBCC 51-55 BCADA 56-60 BBDDB61-65 CCADD 66-70 BAADB 71-75 AACCD 76-80 ACDBC81-85 CCACB 86-90 DDCBC 91-95 CAABA 96-100 BBBCB。
[必刷题]2024九年级英语上册语法填空专项专题训练(含答案)
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[必刷题]2024九年级英语上册语法填空专项专题训练（含答案）试题部分一、选择题：1. Choose the correct form of the verb to plete the sentence. "He _______ to the library every weekend to read books."A. goB. goesC. goingD. gone2. Identify the correct tense to plete the sentence. "By next month, she _______ for the pany for three years."A. will workB. has workedC. workedD. is working3. Select the appropriate preposition to plete the sentence. "He is responsible _______ the project."A. forB. toC. in4. Choose the correct form of the adjective to plete the sentence. "She is _______ than her sister."A. beautifullerB. more beautifulC. beautifullestD. beauty5. Which sentence uses the correct parative form of the adjective? "He is _______ tall than his brother."A. tallerB. tallC. tallestD. tallerly6. Fill in the blank with the correct form of the pronoun. "_________ is going to the movies tonight."A. SheB. HeC. ItD. They7. Choose the correct conjunction to plete the sentence. "She loves singing, _______ she doesn't like dancing."A. andB. butC. or8. Identify the correct past participle form of the verb. "The book was _______ the famous author."A. writeB. wroteC. writtenD. writed9. Select the correct article to plete the sentence. "I saw _______ interesting movie last night."A. aB. anC. theD. no10. Fill in the blank with the correct form of the verb. "If I _______ you, I would study harder for the exam."A. amB. wereC. beD. have been二、判断题：1. The sentence "She has been to Beijing twice" is in the present perfect tense. ( )2. The phrase "look forward to" is followed a gerund. ( )3. "Whose" is a possessive pronoun. ( )4. The sentence "I like apples, but she likes bananas" uses a correct contrast. ( )5. "Than" is a subordinating conjunction. ( )三、填空题：1. The past tense of the verb "do" is _______.2. The plural form of "child" is _______.3. The present perfect continuous tense of "play" is_______.4. "I have _______ a letter from my pen pal." (Use the correct past participle form of "send".)5. The correct form of "there is" in the plural is_______.6. The opposite of "expensive" is _______.7. "I _______ (be) to London last year." (Fill in the correct verb form.)8. "The sun _______ (rise) in the east." (Fill in the correct verb form.)9. "She _______ (go) to the store and _______ (buy) some milk." (Fill in the correct verb forms.)10. "If it _______ (rain) tomorrow, we will stay at home." (Fill in the correct verb form.)11. "The cat _______ (be) on the table." (Fill in the correct form of "be".)12. "He _______ (read) a book when I called him." (Fill in the correct past continuous form of "read".)13. "They _______ (not go) to the party because they_______ (be) tired." (Fill in the correct verb forms.)14. "She _______ (can) speak three languages fluently." (Fill in the correct modal verb.)15. "_______ you like some coffee?" (Fill in the correct form of "do".)16. "He _______ (should) have finished his homework now." (Fill in the correct modal verb form.)17. "The movie _______ (be) very interesting." (Fill in the correct form of "be".)18. "We _______ (be) happy to help you." (Fill in the correct form of "be".)19. "They _______ (be) going to the zoo next week." (Fill in the correct form of "be".)20. "I wish I _______ (can) fly." (Fill in the correct modal verb form.)四、简答题：1. What is the difference between "affect" and "effect"?2. Explain the difference between "its" and "it's".3. What is the past perfect tense and give an example sentence.4. What is a gerund and how is it used in a sentence?5. How do you form the present continuous tense?6. What is a modal verb? Give three examples.7. What is the difference between "some" and "any"?8. Explain the use of "used to" in a sentence.9. How do you form questions in the present simple tense?10. What is the difference between "there", "their", and "they're"?本套试题答案如下一、选择题：1. B2. B3. A4. B5. A6. A7. B8. C9. A10. B二、判断题：1. √2. √3. ×4. √5. ×三、填空题：1. did2. children3. has been playing4. received5. there are6. cheap7. was8. rises9. went, bought10. rains11. is12. was reading13. didn't go, were14. can15. Would16. should17. is18. are19. are20. could四、简答题：1. "Affect" is a verb, "effect" is a noun.2. "Its" is a possessive adjective, "it's" is a contraction of "it is".3. The past perfect tense is used to describe an action that was pleted before another past action. Example: "By the time he arrived, the meeting had already started."4. A gerund is a verb form ending in ing that functionsas a noun. Example: "Reading is my favorite hob."5. The present continuous tense is formed with thepresent tense of "be" followed the ing form of the verb. Example: "She is singing."6. Modal verbs are auxiliary verbs that express possibility, permission, or ability. Examples: can, may, must.7. "Some" is used in positive sentences, "any" is used in negative sentences and questions.8. "Used to" is used to describe a past habit or state that is no longer true. Example: "He used to smoke, but he quit."9. To form questions in the present simple tense, invert the subject and the verb "do" or "does". Example: "Do youlike coffee?"10. "There" indicates a place, "their" is a possessive adjective, "they're" is a contraction of "they are".。
高考选择题和填空题专项训练八至十二(学生版)
16.（理）线性回归方程 必过的定点坐标是_______.
2008年高考选择题和填空题专项训练（十）
班级：姓名：
一、选择题：（本大题共10小题，每小题5分，满分50分）
1．已知函数 的解集为 ，则函数 图象可以为（）
2．函数 的图象恰有两个公共点，则实数a的取值范围是（）
B．
A．②③B．①④
C．③④D．②④
二、填空题（本大题共5小题，每小题5分，满分25分）
11.若关于x的方程 有四个不相等的实根，则实数m的取值范围为__ __。
12.（2005上海）函数 的图象与直线 有且仅有两个不同的交点，则 的取值范围是________。
13.（2006年浙江）对a,b R,记max|a,b|= 函数f（x）＝max||x+1|,|x-2||(x R)的最小值是.
③函数 的图象关于点（－1，－2）成中心对称；
④已知f(x)是R上的函数，且满足f(x+2)= f(x)，当x 时，f(x)= ，则 2007.5)的值为0.5．
13.设函数 则函数 的
最大值是.
14．1996年的诺贝尔化学奖授予对发现C60有重大贡献的三位科学家.C60是由60个C原子组成的分子，它结构为简单多面体形状.这个多面体有60个顶点，从每个顶点都引出3条棱，各面的形状分为五边形或六边形两种,则C60分子中形状为五边形的面有_____个，形状为六边形的面有_____个.
14.定义在 上的偶函数 满足： ，且在 上是增函数，下面关于 的判断：① 是周期函数；② =0；③ 在 上是减函数；④ 在 上是减函数.其中正确的判断是（把你认为正确的判断都填上）
15.（2006年四川）如图，把椭圆 的长轴AB分成 等份，
二年级上册长度单位专项训练题
二年级上册长度单位专项训练题
一、填空题
1.49分米=（）厘米
2.78分米=（）厘米
3.630分米=（）米
4.240分米=（）米
5.39分米=（）厘米
6.530厘米=（）米（）分米
7.690厘米=（）米（）分米
二、比一比
1.6米（） 1分米
2. 1米（） 10分米
3.680分米（） 1米
4. 18分米（） 164厘米
5.78分米（） 14米
6.160分米（）9米
三、选择题
1、一根木材长3米，第一次锯掉8分米，第二次锯掉2分米，这根木材短了( )
A、2分米
B、 1米
C、8分米
D、2米
2、姐姐3小时（）前进了 12千米
A、骑自行车
B、乘汽车
C、乘火车
D、步行
3、一块橡皮长度约25 ( )
A、厘米
B、毫米
C、分米
D、米
4、一个文具盒宽约1 ( )
A、毫米
B、米
C、厘米
D、分米
5、小明身高160厘米，玲玲比小明爱12厘米，玲玲的身高是( )
A、 148米
B、 172厘米
C、 148厘米
D、 172米
四、判断题
1、玲玲的身高125厘米，她妈妈比她高40厘米，妈妈身高165米。
( )
2、环形跑道长250米，要跑1千米，需要跑5圈。
( )
3、一棵柳树高4米。
( )
4、 1米等于100厘米可以用1m=100mm表示。
( )
5、三名同学参加跳远比赛，成绩分别是小刚2.03米，晓华188厘米，小强195厘米，冠军是小强。
( )。
一般过去时专项训练题及答案
一般过去时专项训练题及答案题目一：选择填空1.I _______ a new car last year.A. boughtB. buyC. am buyingD. have bought2.He _______ English for two years before he moved to Canada.A. studiedB. studiesC. is studyingD. has studied3.We _______ a great time at the party yesterday.A. hadB. haveC. are havingD. has4.Amy _______ her bike in the park when it started raining.A. rodeB. rideC. is ridingD. has ridden5.They _______ to the beach every summer when they were kids.A. wentB. goC. are goingD. have gone答案： 1. A2. D3. A4. A5. A题目二：改错题请根据所给句子的语境和动词的时态，找出错误并修改。
1.Yesterday, I buyed a new book at the bookstore.错误：buyed修改：bought2.Sarah go to the gym every day last week.错误：go修改：went3.We are watch a movie together last night.错误：are watch修改：were watching4.Tim and John was best friends when they were in school.错误：was修改：were5.She goed to the market this morning to buy some groceries.错误：goed修改：went答案： 1. Yesterday, I bought a new book at the bookstore. 2. Sarah went to the gym every day last week. 3. We were watching a movie together last night. 4. Tim and John were best friends when they were in school. 5. She went to the market this morning to buy some groceries.题目三：根据所给情景，写出合适的一般过去时句子1.你的朋友昨天生日，你送给了他一份礼物。
一般现在时专项训练及答案
一般现在时专项训练及答案一、填空题1.I ____(like) ice cream.2.He ____(go) to school every day.3.They ____(play) basketball on weekends.4.She ____(watch) TV in the evening.5.We ____(study) English on weekdays.答案：1.like2.goes3.play4.watches5.study二、选择题1.______ the dog barks loudly every night?– A. Do– B. Does– C. Is2.My mother ______ a doctor.– A. are– B. am– C. is3.Tom and his sister _______ swimming every summer.– A. goes– B. go– C. are going4.We _______ football after school.– A. plays– B. play– C. are playing5.Sarah ______ to music in her free time.– A. listen– B. listens– C. is listening答案：1. B2. C3. B4. B5. B三、改错题1.She likes go to the movies on weekends.–改为：She likes to go to the movies on weekends.2.My brother don’t like playing football.–改为：My brother doesn’t like playing football.3.We watches TV every evening.–改为：We watch TV every evening.4.He do his homework every day.–改为：He does his homework every day.5.They goes to the park on Sundays.–改为：They go to the park on Sundays.答案：1.She likes to go to the movies on weekends.2.My brother doesn’t like playing football.3.We watch TV every evening.4.He does his homework every day.5.They go to the park on Sundays.四、句型转换1.She plays tennis every Sunday.–变为一般疑问句：______ she ______ tennis every Sunday?–肯定回答：Yes, ______ ______.–否定回答：No, ______ ______.2.He dances well at parties.–变为否定句：He ______ ______ well at parties.3.They visit their grandparents once a month.–变为一般疑问句：______ they ______ their grandparents once a month?–肯定回答：Yes, ______ ______.–否定回答：No, ______ ______.4.We usually watch movies on Fridays.–变为否定句：We ______ ______ watch movies on Fridays.5.The cat sleeps all day.–变为一般疑问句：______ the cat ______ all day?–肯定回答：Yes, ______ ______.–否定回答：No, ______ ______.答案：1.Does, play; she does.2.doesn’t da nce.3.Do, visit; they do.4.don’t usually.5.Does, sleep; it does.五、完成句子1.They ______ tennis every weekend.2.The bus ______ in ten minutes.3.We ______ a big house.4.She ______ at a restaurant.5.My sister ______ tall and beautiful.6.Linda ______ a new car.7.The boys ______ football after school.8.He ______ a book about ancient history.答案：1.play2.will arrive3.have4.works5.is6.has7.play8.is reading六、作文题请根据下面的提示写一篇短文，描述你在平时的生活中是如何运用一般现在时的。
(11)角的选择填空解答专项练习50题(有答案)
AB1NM(1)O DC AB N M(2)F E 角的专项练习50题（有答案）一、判断1.所有的直角都相等.( )2.大于直角的角都是钝角.( )3.如图1,∠1也可以用∠AOB 或∠O 来表示.( )4.由同一端点出发的两条直线组成的图形叫做角.( )5.一个锐角和一个钝角的和等于一个平角.( )6.一个角的补角大于这个角.( )7.一个钝角减去一个锐角必然得到一个锐角.( )8.一个角的补角减去这个角的余角是一个直角.( ) 9.同角或等角的余角相等,补角也相等.( )10.若有一个公共顶点和一条公共边的两个角互补, 则这两个角的另一边必在同一直线上.( )11.120.5°=120°50′.( ) 12.42°51′÷3+16°29′×4=80°13′.( ) 二、填空.13.角是有公共端点的两条_______组成的图形,也可以看成是由一条______•绕它的端点旋转而成的图形._______叫做角的顶点,_______叫做角的始边,_______叫做角的终边. 14.1周角=______°,1平角=______°.15.18.32°=18°( )′( )″,216°42′=_______°.16.•若一个角的余角是这个角的4•倍,•则这个角是_______,•这个角的补角是______.17.互为补角的两个角可以都是_______角,或者一个是______角,一个是____角.(填“钝角”、“锐角”、“直角”) 18.两个角的和等于________( ),就说这两个角互为余角;•两个角的和等于________( ),就说这两个角互为补角.19.已知∠1=43°27′,则∠1的余角是_______,补角是________.20.•从一个角的顶点引出的一条_______,•把这个角分成两个相等的角,•这条______叫做这个角的_______. 21.如果两个角是对顶角,那么这两个角_______.22.如图2,∠AME 的补角是_______,对顶角是_______.23.计算:8°43′50″-18°43′26″×5-37°3′÷3=_________.24.计算:180°-52°18′36″-25°36″×4=____________. D C AB(3)OE CABN M(4)O DC AB (5)O E4321D CAB(6)F E25.若时钟表示的时间为5点15分时,时钟的时针和分针所成的锐角是_____°.26.在∠AOB 的内部引出OC,OD 两条射线,则图中共有______•个角,•它们分别是_________.27.如图3,∠BOC=60°,OE,OD 分别为∠AOC,∠BOC 的角平分线,则∠EOD=_______,∠COE=_______,∠BOE 的角平分线是_______.28.如图4,OM,ON 平分∠AOB 和∠BOC,∠MON=•60•°,•那么∠AOC=•_____,•∠BOC=_____. 29.角α的补角是它的余角的4倍,则角α=_______.30.如图5,已知∠COE=∠BOD=∠AOC=90°,则图中与∠BOC 相等的角为_______,与∠BOC 互补的角为_______,与∠BOC 互余的角为________. 三、选择31.下列各角中,( )是钝角.D C A B(7)F E DC A BO EA.14周角 B.23周角 C.23平角 D.14平角 32.两个锐角的和( )A.必定是锐角B.必定是钝角C.必定是直角D.可能是锐角,可能是直角,也可能是钝角 33.互为补角的两个角的比是3:2,则这两个角是( )A.108°,72°B.95°,85°C.100°,80°D.120°,60° 34.如果两个角的和等于180°,那么这两个角一定是( ).A.两个锐角;B.两个直角;C.一个锐角,一个钝角;D.两个直角或一个锐角,一个钝角 35.已知OC 平分∠AOB,则下列各式:(1)∠AOC=12∠AOB;(2)∠AOC=∠COB;(•3)•∠AOB=2∠AOC,其中正确的是( )A.只有(1)B.只有(1)(2)C.只有(2)(3)D.(1)(2)(3) 36.如图6,已知∠1=∠2,∠3=∠4,则下列结论正确的个数为( ).(1)AD 平分∠BAF;(2)AF 平分∠DAC;(3)AE 平分∠DAF;(4)AE 平分∠BAC.A.1B.2C.3D.437.如图7,以C 为顶点的角(小于平角)共有( ).A.4个B.8个C.10个D.18个38.已知∠AOB=30°,∠BOC=80°,∠AOC=50°,则下列说法正确的是( ) A.射线OB 在△AOC 内 B.射线OB 在△AOC 外 C.射线OB 与射线OA 重合 D.射线OB 与射线OC 重合 39.已知∠MON=30°,∠NOP=15°,则∠MOP=( ).A.45°B.15°C.45°或15°D.无法确定40.用一副三角板的内角(其中一个三角板的内角是45°,45°,90°,•另一个是30°,60°,90°)可以画出大于0°且小于176°的不同度数的角共有( )A.8种B.9种C.10种D.11种四、计算 41.如图,已知∠AOB:∠BOC=3:5,又OD,OE 分别是∠AOB 和∠BOC 的平分线,•若∠DOE=60°,求∠AOB 和∠BOC 的度数.42.已知∠AOB=45°,∠BOC=30°,求∠AOC 的度数.43.如图,已知OB 平分∠AOC,且∠2:∠3:∠4=2:5:3,求∠1,∠2,∠3,∠4的度数.4321DCABO44.若一个角的补角是这个角余角的3倍,那么这个角是多少度?45.以∠AOB 的顶点O 为端点射线OC,使∠AOC:∠BOC=5:4.(1)若∠AOB=18°,求∠AOC 与∠BOC 的度数;(2)若∠AOB=m °,求∠AOC 与∠BOC 的度数.五、解答题：46.如图,已知∠ABC=∠ACB,∠1=∠2,∠3=∠4,求证:∠2=∠4.4321CABO47.（1）1点20分时，时钟的时针与分针的夹角是几度？2点15分时，•时钟的时针与分 针的夹角又是几度？（2）从1点15分到1点35分，时钟的分针与时针各转过了多大角度？（3）时钟的分针从4点整的位置起，按顺时针方向旋转多少度时才能与时针重合？48.用三角板画出下列图形:(1)画∠AOB=105°;(2)以OB 为始边,在∠AOB 内部画∠AOC=15°.(保留作图痕迹,并写出作法)49、将两块直角三角板的直角顶点重合,如图所示,若∠AOD=128°,则∠BOC=____.50、如图，已知∠AOC=90°，∠COD比∠DOA大28°，OB是∠AOC的平分线．求∠BOD的度数．51、已知∠AOB=90°，OC为一射线，OM，ON分别平分∠BOC和∠AOC，则∠MON的大小为多少？52、如图，OA⊥OB，OC为射线，OM平分∠AOC，ON平分∠BOC。
【必刷题】2024高一英语上册完形填空逻辑推理专项专题训练(含答案)
【必刷题】2024高一英语上册完形填空逻辑推理专项专题训练（含答案）试题部分一、选择题：1. In the first paragraph, the author mainly wants totell us that ______.A. logic reasoning is important in daily lifeB. logic reasoning is widely used in various fieldsC. logic reasoning can help us solve plex problemsD. logic reasoning is a skill that everyone should master2. According to the passage, which of the following is NOT a type of logic reasoning?A. Deductive reasoningB. Inductive reasoningC. Abductive reasoningD. Emotional reasoning3. When it es to solving a math problem, which type of reasoning is usually used?A. Deductive reasoningB. Inductive reasoningC. Abductive reasoningD. Analogical reasoning4. The passage mainly discusses ______.A. the importance of logic reasoningB. the types of logic reasoningC. how to apply logic reasoning in daily lifeD. the benefits of logic reasoning5. Which of the following sentences best describes the author's attitude towards logic reasoning?A. PraisefulB. CriticalC. IndifferentD. Objective6. In the second paragraph, the author mentions "For example, if all cats have four legs and Whiskers has four legs, then Whiskers is a cat." This is an example of ______.A. deductive reasoningB. inductive reasoningC. abductive reasoningD. analogical reasoning7. When using logic reasoning, which of the following is the most important?A. Making assumptionsB. Gathering evidenceC. Analyzing dataD. Drawing conclusions8. According to the passage, logic reasoning can help us ______.A. make better decisionsB. improve our memoryC. bee more imaginativeD. municate more effectively9. Which of the following is NOT mentioned as a benefit of logic reasoning in the passage?A. Improving critical thinking skillsB. Enhancing problemsolving abilitiesC. Boosting creativityD. Developing munication skills10. In the last paragraph, the author suggests that we should ______.A. learn different types of logic reasoningB. practice logic reasoning in daily lifeC. read more books about logic reasoningD. attend logic reasoning training courses二、判断题：1. Logic reasoning is only used in academic fields. ( )2. Deductive reasoning always starts with specific information and leads to general conclusions. ( )3. Inductive reasoning is based on patterns and observations. ( )4. Abductive reasoning is a bination of deductive and inductive reasoning. ( )5. Emotional reasoning is a type of logic reasoning. ( )三、填空题：1. Logic reasoning is a process of ________ that involves the use of rational thought to deduce a conclusion from a set of premises.2. The two main types of reasoning are ________ reasoning and ________ reasoning.3. In a syllogism, the "major premise" is the statement that ________, while the "minor premise" is the statementthat ________.4. An example of inductive reasoning is when we observe specific instances and ________ a general principle.5. A logical fallacy occurs when the argument's logic is ________ and leads to a false or incorrect conclusion.6. The process of using known facts to reach a specific conclusion is known as ________ reasoning.7. When we use analogical reasoning, we pare two ________ to infer something about the ________.8. To strengthen a logical argument, it is important to provide ________ and ________ evidence.9. Critical thinking is a skill that involves analyzing, evaluating, and ________ information.10. One of the benefits of logic reasoning is that ithelps improve our ________ thinking skills.11. In a logical argument, the "conclusion" is the statement that is ________ to be true based on the premises.12. A valid argument is one where if the premises are true, then the ________ must also be true.13. The structure of a logical argument includes premises, ________, and logical ________.14. ________ reasoning is often used in mathematics and formal logic to prove theorems.15. An example of circular reasoning is when theconclusion is ________ in one of the premises.16. ________ reasoning is used to make predictions based on limited data or observations.17. The process of elimination is a strategy often usedin ________ reasoning to narrow down possible answers.18. A counterargument can be used to ________ thevalidity of an opposing viewpoint.19. ________ reasoning is based on the idea that if two things are similar in some respects, they will be similar in other respects as well.20. To avoid logical fallacies, it is important to________ assumptions and biases that could weaken the argument.四、简答题：1. Explain the difference between deductive and inductive reasoning.2. How does critical thinking relate to logic reasoning?3. What is a logical fallacy, and how can it affect an argument?4. Describe the steps involved in constructing a valid deductive argument.5. Give an example of how inductive reasoning is used in everyday life.6. What is the role of evidence in logic reasoning?7. How can analogical reasoning be used to solve problems?8. Explain the concept of a syllogism and provide an example.9. Why is it important to avoid emotional reasoning in logical discussions?10. Discuss the importance of logic reasoning in academic and professional settings.本套试题答案如下一、选择题：1. B2. D3. A4. A5. D6. A7. D8. A9. C10. B二、判断题：1. ×2. ×3. √4. ×5. ×三、填空题：1. inference2. deductive, inductive3. makes a general statement, makes a specific statement4. infer5. flawed6. deductive7. cases, case in question8. relevant, sufficient9. synthesizing10. critical11. claimed12. conclusion13. conclusion, connectors14. Deductive15. restated16. Inductive17. deductive18. challenge19. Analogical20. identify and eliminate四、简答题：1. Deductive reasoning starts with a general principle and moves to a specific conclusion, while inductive reasoning starts with specific observations and moves to a general conclusion.2. Critical thinking involves the evaluation and analysis of arguments, which is essential in logic reasoning to ensure that the conclusions are valid.3. A logical fallacy is an error in reasoning that undermines the argument's validity; it can lead to false conclusions and weaken the argument's persuasive power.4. Identifying the major premise, stating the minor premise, and drawing the conclusion based on the relationship between the two premises.5. Observing that the sky is clear and predicting that it will not rain, based on past experiences.6. Evidence supports the premises and makes the argument more convincing and reliable.7. By identifying a known similarity between two situations and using that similarity to infer a similarity in another respect.8. A syllogism is a form of deductive reasoning that consists of a major premise, a minor premise, and a conclusion. Example: All mammals are warmblooded (major premise), a whale is a mammal (minor premise), therefore a whale is warmblooded (conclusion).9. Emotional reasoning can cloud judgment and lead to biased or illogical conclusions.10. Logic reasoning is essential for making wellreasoned decisions, solving plex problems, and effectively municating ideas in academic and professional contexts.。
二年级上册角的专项训练题
二年级上册角的专项训练题一、填空题1. 一个角有（）个顶点，（）条边。
题目解析：角是由一个顶点和两条边组成的图形，这是角的基本概念。
答案：1；2。
2. 比直角大的角叫（）角，比直角小的角叫（）角。
题目解析：根据角的大小分类，直角是90度，大于90度的角是钝角，小于90度的角是锐角。
答案：钝；锐。
3. 三角板上有（）个角，其中有（）个直角。
题目解析：三角板是常见的学习工具，通常一副三角板有两个，每个三角板都有3个角，其中有1个直角。
答案：3；1。
4. 一个长方形有（）个角，都是（）角。
题目解析：长方形的特征是四个角都是直角，共有4个角。
答案：4；直。
二、判断题1. 角的两条边越长，角就越大。
（）题目解析：角的大小与角的两条边张开的程度有关，而与边的长度无关。
答案：×。
2. 一个角有3个顶点和3条边。
（）题目解析：根据角的定义，一个角只有1个顶点和2条边。
答案：×。
3. 直角和锐角拼出的角一定是钝角。
（）题目解析：直角是90度，锐角小于90度，它们相加的和一定大于90度小于180度，所以一定是钝角。
答案：√。
4. 所有的直角都一样大。
（）题目解析：直角的度数是固定的90度，所以所有的直角都一样大。
答案：√。
三、选择题1. 下面图形中，（）是角。
A.B.C.题目解析：角是由一个顶点和两条边组成的图形，A选项没有顶点，B选项有一个顶点和两条边，C选项不是封闭图形。
答案：B。
2. 下面（）角最大。
A. 锐角B. 直角C. 钝角题目解析：根据角的大小分类，锐角小于90度，直角等于90度，钝角大于90度小于180度，所以钝角最大。
答案：C。
3. 一个角的两边张开得越大，这个角就（）。
A. 越小B. 不变C. 越大题目解析：角的大小取决于两边张开的程度，张开得越大角就越大。
答案：C。
4. 把一个直角和一个锐角拼在一起，得到的角一定是（）。
A. 锐角B. 直角C. 钝角题目解析：直角是90度，锐角小于90度，它们相加一定大于90度小于180度，是钝角。
数学选择、填空题专项训练(共40套)
三基小题训练一一、选择题（本大题共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.函数y =2x +1的图象是 （ ）2.△ABC 中，cos A =135，sin B =53,则cos C 的值为 （ ） A.6556B.－6556C.－6516D. 65163.过点（1，3）作直线l ，若l 经过点（a ,0）和(0,b )，且a ,b ∈N *，则可作出的l 的条数为（ ）A.1B.2C.3D.多于34.函数f (x )=log a x (a ＞0且a ≠1)对任意正实数x ,y 都有 （ ）A.f (x ²y )=f (x )²f (y )B.f (x ²y )=f (x )+f (y )C.f (x +y )=f (x )²f (y )D.f (x +y )=f (x )+f (y )5.已知二面角α—l —β的大小为60°，b 和c 是两条异面直线，则在下列四个条件中，能使b 和c 所成的角为60°的是（ ）A.b ∥α,c ∥βB.b ∥α,c ⊥βC.b ⊥α,c ⊥βD.b ⊥α,c ∥β6.一个等差数列共n 项，其和为90，这个数列的前10项的和为25，后10项的和为75，则项数n 为 （ ）A.14B.16C.18D.207.某城市的街道如图，某人要从A 地前往B 地，则路程最短的走法有 （ ）A.8种B.10种C.12种D.32种8.若a ,b 是异面直线，a ⊂α,b ⊂β,α∩β=l ，则下列命题中是真命题的为（ ）A.l 与a 、b 分别相交B.l 与a 、b 都不相交C.l 至多与a 、b 中的一条相交 D.l 至少与a 、b 中的一条相交9.设F 1，F 2是双曲线42x －y 2=1的两个焦点，点P 在双曲线上，且1PF ²2PF =0，则|1PF |²|2PF |的值等于（ ）A.2B.22C.4D.810.f (x )=(1+2x )m +(1+3x )n (m ,n ∈N *)的展开式中x 的系数为13，则x 2的系数为（ ）A.31B.40C.31或40D.71或8011.从装有4粒大小、形状相同，颜色不同的玻璃球的瓶中，随意一次倒出若干粒玻璃球（至少一粒），则倒出奇数粒玻璃球的概率比倒出偶数粒玻璃球的概率（ ）A.小B.大C.相等D.大小不能确定12.如右图，A 、B 、C 、D 是某煤矿的四个采煤点，l 是公路，图中所标线段为道路，ABQP 、BCRQ 、CDSR 近似于正方形.已知A 、B 、C 、D 四个采煤点每天的采煤量之比约为5∶1∶2∶3，运煤的费用与运煤的路程、所运煤的重量都成正比.现要从P 、Q 、R 、S 中选出一处设立一个运煤中转站，使四个采煤点的煤运到中转站的费用最少，则地点应选在（ ）A.P 点B.Q 点C.R 点D.S 点二、填空题（本大题共4小题，每小题4分，共16分.把答案填在题中横线上）13.抛物线y 2=2x 上到直线x －y +3=0距离最短的点的坐标为_________.14.一个长方体共一顶点的三个面的面积分别是2，3，6，这个长方体对角线的长是_________.15.设定义在R 上的偶函数f (x )满足f (x +1)+f (x )=1,且当x ∈［1,2］时，f (x )=2－x ,则f (8.5)=_________.16.某校要从甲、乙两名优秀短跑选手中选一名选手参加全市中学生田径百米比赛，该校预先对这两名选手测试了8次，测试成绩如下：答案：一、1.A 2.D 3.B 4.B 5.C 6.C 7.B 8.D 9.A 10.C 11.B 12.B二、13.（21，1） 14.6 15. 21三基小题训练二一、选择题：本大题共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．如图，点O 是正六边形ABCDEF 的中心，则以图中点 A 、B 、C 、D 、E 、F 、O 中的任意一点为始点，与始点不同的另一点为终点的所有向量中，除向量OA 外，与向量 OA 共线的向量共有（ ）A ．2个B ． 3个C ．6个D ． 7个 2．已知曲线C ：y 2=2px 上一点P 的横坐标为4,P 到焦点的距离为5,则曲线C 的焦点到准线的距离为 ( )A ． 21B ． 1C ． 2D ． 43．若(3a 2 －312a ) n 展开式中含有常数项，则正整数n 的最小值是 （ ）A ．4B ．5C ． 6D ． 84． 从5名演员中选3人参加表演，其中甲在乙前表演的概率为 （ ）E FDO C B AA ． 203B ． 103C ． 201D ． 1015．抛物线y 2=a(x+1)的准线方程是x=－3，则这条抛物线的焦点坐标是（ ）A.（3，0）B.（2，0）C.（1，0）D.（-1，0）6．已知向量ｍ＝（a ，b ），向量ｎ⊥ｍ，且｜ｎ｜＝｜ｍ｜，则ｎ的坐标可以为（ ）A.（a ，－b ）B.（－a ，b ）C.（b ，－a ）D.（－b ，－a ）7. 如果S =｛x ｜x =2n +1,n ∈Z ｝,T =｛x ｜x =4n ±1,n ∈Z ｝,那么 A.S T B.T S C.S=T D.S ≠T8．有6个座位连成一排，现有3人就坐，则恰有两个空座位相邻的不同坐法有 （ ）A ．36种B ．48种C ．72种D ．96种9．已知直线l 、m ，平面α、β，且l ⊥α,m ⊂β.给出四个命题：（1）若α∥β,则l ⊥m ;(2)若l ⊥m ,则α∥β;(3)若α⊥β,则l ∥m ;(4)若l ∥m ,则α⊥β,其中正确的命题个数是( )A.4B.1C.3D.210．已知函数f(x)＝log 2(x 2－ax ＋3a)在区间[2，＋∞)上递增，则实数a 的取值范围是（ ）A.(－∞，4)B.(－4，4]C.(－∞，－4)∪[2，＋∞)D.[－4，2)11．4只笔与5本书的价格之和小于22元，而6只笔与3本书的价格之和大于24元，则2只笔与3本书的价格比较（ ）A ．2只笔贵B ．3本书贵C ．二者相同D ．无法确定12．若α是锐角，sin(α－6π)=31,则cos α的值等于 A.6162- B. 6162+ C. 4132+ D. 3132-二、填空题：本大题共4小题，每小题4分，共16分．答案填在题中横线上．13．在等差数列｛a n ｝中，a 1=251,第10项开始比1大，则公差d 的取值范围是___________.14．已知正三棱柱ABC —A 1B 1C 1，底面边长与侧棱长的比为2∶1，则直线AB 1与CA 1所成的角为 。
安全教育考试三级试题含参考答案专项训练题(5套)
驾驶员三级安全教育考试卷（附答案）部门：姓名：分数：一、填空题（每空2分,共计40分）：1、根据公司《关于驾驶员违法违纪和肇事处罚的规定》,凡发生（）事故的驾驶员，( )，三年内不准驾驶公司营运车辆。
2.机动车行经没有交通信号的道路时，遇（）横过道路，应当（）慢行。
3.发生交通事故当事人逃逸的，逃逸的当事人承担（）责任。
4、道路运输驾驶员诚信考核办法规定，驾驶员无正当理由超过规定时间30日以上未签注诚信考核等级或未参加继续教育培训的，一次计（）分。
5、机动车载人不得（）核定的载客人数，（）机动车不得违反规定载货。
6、车辆在高速公路上行驶时速为100公里时，与前车车距要保持（）米以上。
7、车辆在行驶中乘客不得将头手（），不得向外（）。
8、道路运输驾驶员考核等级分为（）、（）、基本合格、不合格4个级别，分别用AAA级、AA级、A级和B级表示。
9、驾驶人驾驶机动车上路行驶前，应当对机动车的安全技术性能进行认真检查；不得驾驶（）或者（）不符合技术标准等具有安全隐患的机动车。
10、在道路上发生交通事故，仅造成轻微财产损失，并且基本事实清楚的，当事人应当( )。
11、因两方或者两方以上当事人的过错发生道路交通事故的，根据其行为对事故发生的作用以及过错的严重程度，分别承担（）、（）和（）。
12、一方当事人故意造成道路交通事故的，（）无责任。
二、选择题（每题3分，共计30分,可多选）：1、高速公路应当标明车道的行驶速度，最高车速不得超过每小时（）公里，最低车速不得低于每小时( )公里。
A、110B、120C、50D、602、长途客运汽车着火，驾驶员应采取哪些措施（）。
A、指导乘客采取自救和灭火措施。
B、当发动机着火后，驾驶员应开启车门，令乘客从车门下车，然后组织乘客用随车灭火器扑灭火焰。
C、如果着火部位在汽车中间，驾驶员打开车门，让乘客从两头车门有秩序地下车。
D、如果火焰小，但封住了车门，乘客可用衣物蒙住头部，从车门冲出来。
小学英语语法专项训练：选择填空100题
小学英语语法专项训练：选择填空100题1.Tony is 14, Jim is 15.Tony is ______than Jim.A.youngerB. biggerC. older2.______is your birthday?A. WhereB. WhenC. What3.______is that? That’s Tom’s mother.A.WhatB. WhosC. Who4. Is your mother ______? Yes, she is.A. cookB. cookC. cooking5. This is peter. He’s ______A. tall and shortB. tall and youngC.young and old6.Where _____your sister last month? She ____in china.A. was ,wasB. were , wasC.were , is7.Look, some children ______our school!A. visitsB. visitC. are visiting8.Are you in china ______ January? Yes, I usually in china _____January.A.in, onB.in,inC.at ,in9.Was it ______yesterday? Yes, it was.A.snowB. cloudyC. rains10.My friend peter _____very well.A.swimB.runningC. sings11.The red bag is___,but it’s ______than the green one.A.big, smallB. heavier ,lightC.cheap , nicer12._______pens do you have ? I have nine.A.How manyB. How muchC.How old13.Mr Guo usually _____shorts in July.A.wearB. wearsC. wearing14. I ____at a green light .A.mustn’t walkB. can walkC. must stopping15. Let’s _____with the computer,Tom.A. playB.playsC. playing16.Don’t talk _______class.A.inB.atC. on17.Li Lei _____like fish, but his sister ______.A.don’tB. doesn’tC. aren’t18.My sisters ______play basketball after school.A. don’tB. doesn’tC. aren’t19.___your grandma and grandpa come from china? Yes,they ____A. Do, doesB. Does,doesC. Do, do20. Don’t ____in class. Let’s ______to the teacher.A.talking, listeningB.talks, listensC.talk , listen21.Is she ____TV now?A. watchB. washingC. watching22.____can I speak to Ann, please? ______A.Can , noB. May, of courseC. Must, ok23. I ____to the tape yesterday eveningAlook B.listen C.listened24. I have a ____coat, my brother has an____jacket.A.new ,oldB.clean, dirtyC. big , small25.Mrs Wu is a doctor, she works in a _____A.hospitalB. farmC.factory26._____you go shopping? No, I ______A.Are, aren’tB.Did, didn’tC. Does, doesn’t27.Look!Who ____in the playground?A.plays footballB. is playing footballC.played football28.We don’t go to school _____Monday _____Saturday .A. from, toB. in , onC.on, on29.Does john usually watch TV _____Friday evening?A.onB. atC. in30.We wear jakets and coats _____winter.A. onB. atC. in31.They have lunch ____their grandpa everyday.A.forB. ofC.of32. The ___of ___is the children’s day.A. one, JuneB. first , JulyC. first , June33.When is your birthday ? It’s ____the fifth of march.A. inB.onC. at34._____you at the party yesterday? Yes, I ____A.was, wasB. are, amC. were , was35.Can the women sing? Yes, ___can .A.theyB. sheC. you36.The house is _____the tree.A. in B. on C.under37.______is Beijing? It’s in north China.A.How longB. WhatC. Where38. I can’t _____, but I _____to Canada last year.A. fly, flewB. flew, flyC. see, saw39.My sister usually ____.She is ___now.A. cries, cryingB.cry, cryingC. cries , cried40.Peter usually plays football _____his friends.A. withB. forC. of41. She stayed ____Mary ___ten days.A. for, withB. with, forC. with, of42.We going _____ a trip now.A. toB.onC. for43. The ____of the week is _____A.first, MondayB. second, TuesdayC.third, Tuesday44.Where ____they ____just now?They go to the shopping mall.A. did, goB. do, goingC. are, going45.____your sister ____a ruler?A. Does, haveB. Do, hasC. Does, has46. I usually ride the bike after school ______Mondays.A.onB. inC.at47. Is your mother strong ____weak?A. andB. orC. but48. I get up ____7:00 every morning.A. inB. onC.at49.My friend likes ______A.running and swimmingB. cook and singC.run and dance50.Tom is ______than Ben.A. heavyB. heavyerC.heavier51. what are you doing? i________.a. eatb. can eatc. eatingd. am eating52. we are _________ books now.a. readingb. am readingc. readd. to read53. our teacher is ________ a red sweater .a. putting onb. put onc. wearsd. wear54. that boy isn’t ________ the teacher .a. listenb. listensc. listeningd. listening to55. it’s eight o’clock. jimmy’s parents __________ tv.a. is watchingb. are watchingc. watchd. to watch56. my mother is _____ a cake _____ my birthday.a. making ; tob. making ; forc. doing ; tod. doing ; for57. they are _______ these books in the box.a. putsb. putc. to putd. putting58. ____ you ___ the window? —yes, i am.a. do, cleanb. is, cleaningc. are, cleaningd. do, cleaning59. The red pen is much _____.A. niceB. niceerC. nicer60. There are many cars and people ____the road.A. withB. inC. on61. Who’s taller, _______?A. Liu Tao’s or Gao Shan’sB. Liu Tao or Gao ShanC. Gao Shan’s or Liu TaoD. Gao Shan or Liu Tao’s62.._____ fatter, Liu Tao or Gao Shan?A. whoseB. who’sC. WhoseD. Who’s63. Whose dog is bigger,_____?A. Liu Tao’s or Gao Shan’sB. Liu Tao or Gao ShanC. Gao Sha n’s or Liu TaoD. Gao Shan or Liu Tao’s64. This is _____week of this term.A. nineB. the ninethC. ninthD. the ninth65. Are there two _____ on the table?A. boxB. boxsC. boxesD. boxse66. Here’s some _____ fo r you.A. grapesB. hamburgerC. glasses of milkD. milk67. _____ sun is bigger than _____ moon.A. /, /B. A, aC. the, theD. The, the68. We all had _____ nice time last Friday evening._____.A. /B. aC. anD. the69. Who is _____ girl behind _____ tree?A. a, aB. the, theC. a, theD. the, a70. Look at _____ old man.A. aB. anC. theD./71.You can play _____the clean dog after class.A.withB. inC. at72.Is your mother ______Huizhou? Yes, she is.A.liveB. goes toC.visiting73.Where _____you this morning? I _____at a meeting.A.were, wasB.are, amC.do, am74.Her brother is a policeman. He works in a _____A.post officeB.police stationC.office75.What’s the weather like today? It’s________A.rainB.windyC.sun76.Were you _____ Canada during the summer holiday?A.inB. onC. at77.Are you ______a good time ?A.haveB.hasC. having78.What do you have _____lunch?A.inB. forC.at79.Tom and Mary have bread and milk___the morning.A.inB. onC. at80.Does it ____in Guangzhou?A. rainingB.rainsC.rain81.The bank is _____my uncle’s home.A. next toB.inC.to82.How many _____are there under the tree?A. manB. womeC. woman83.Is you r bag big ____small?A. andB. orC. an84.______does Ben go to school? By bus.A. HowB.WhatC.Where85. There is _____ map of the world on _____ wall. _____ map is mine.A. a, a, AB. a, the, TheC. the, the, TheD. the, the, A86. There’re many _____ on the farm.A. fruitB. pianoesC. radiosD. childs87. Are there any _____ in the building.A. fruitB. pianoesC. radiosD. childs88. Mom, give me some ______.A. moneyB. moneysC. moneies89.This letter is _____my cousin .A.with, ofB. for, inC. with, for90. Thank you _______your books.A. ofB. forC. to91. Is Amy ____a picture? Yes, she is.A. drawingB. drivingC. draw92.________are they? 40 yuan.A.How manyB. How oldC. How much93. There are ____days in a week .A. twelveB. sevenC. two94.Where is shanghai? It’s in _____china.A.southB. northC. east95.The elephant is _______than the monkey.A. many biggerB. much lighterC. much heavier96.Mei Lan saw some boats ____ the river.A. inB. onC. at97. ------May I have some socks. please? ----Can I give you _______socks on the shelf?-----No，thank you. I’d like ______socks there. They l ook comfortabl e.A. that, thisB. this, thatC. those, theseD. these, those98. -------Would you like ______wine? -----No. thanks.A. someB. anyC. noD. the99. Hell o, _________is Susan speaking .Can I speak to Andy. please?--------Hold on, please.A. sheB. thisC. thatD. it100.________d o you like best, football., volleyball or baseball?A. WhoB. WhichC. WhatD. Why。
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选择填空专项训练题（一）1、化简32)(a -的结果是 …………………………………………………………………（ ）（A ）5a - （B ）5a （C ）6a - （D ）6a2、如果正比例函数的图象经过点（-3，5），那么它也经过点……………………………（ ）（A ）（4，-6）； （B ）（5，-8）； （C ）（6，-10）； （D ）（7，-12）．3、不等式组⎩⎨⎧<-<-0203x x 的解集是………………………………………………（ ）（A ）2<x ； （B ）3<x ； （C ） 32<<x ； （D ） 无 解．4、袋中有3个红球，2个白球，如果从袋中任意摸出1个球，那么摸出白球的概率是（ ）（A ）51 （B ）52 （C ）32 （D ）31 5、若是非零向量，则下列等式正确的是……………………………………（ ）（A； （B ）AB =； （C ）AB +=0； （D=0．6、下列命题中正确的是………………………………………………………………（ ）（A ）如果两条直线被第三条直线所截，那么同位角一定相等；（B ）三角形的重心到三角形三个顶点的距离相等；（C ）两圆相交时连心线垂直于公共弦；（D ）如果一个四边形的对角线互相垂直，那么这个四边形一定是菱形。
7、化简：21＝__________. 8、分解因式33x x -= .9、当3_____a 时,等式a a -=-3)3(2成立10、某商品原来的价格为a 元，近一个月以来，由于季节原因，连续两次．．降价，平均每次的降幅为20％，试问现在的价格为 元（用含a 的代数式表示）．11、若方程0213122=+---x x x x ，设x x y 12-=则原方程可化为 ； 12、要使正五边形绕着它的中心旋转后能与它本身重合，至少要旋转 度.13．斜面的坡度为=i 1∶3，一物体沿斜面向上推进了20米，那么物体升高了 米．14、已知函数x x f 2)(-=，比较)1(f 与)2(f 的大小， 用“>”或“<”符号连接：)1(f )2(f ．ABO （第14题）15. 如图，在正方形网格中，AOB ∠如图放置，则cos AOB ∠的值为 .16、在Rt △ABC 中，︒=∠90C ，6=AC ，8=BC ，点G 为Rt △ABC 的重心，那么=CG .17、点P 的坐标为)5,2(-，以点P 为圆心，半径为r 的圆与x 轴相离，与y 轴相交，则r 的取值范围为 .18、在ABC △中，5AB AC ==，3cos 5B =（如图）．如果圆O且经过点B C ，，那么线段AO 的长等于 ．填空、选择专项练习（二）1.20022,0.2121121112,,cos 60,sin 45,0.1237π-- 中，无理数有（ ）(A) 3个 ( B) 4个 (C) 5个 ( D) 6个2.下列运算正确的是 （ ）(A) x 2 x 3 =x 6 (B) x 2＋x 2=2x 4 (C) (-2x)2 =4x 2 (D) (-2x)2 (-3x )3=6x 53.不等式组⎩⎨⎧-≤-->x x x 28132的最小整数解是（ ） (A) －1 ( B) 0 (C) 2 (D) 34. 下列事件中确定事件是 （ ）(Ａ)掷一枚均匀的硬币，正面朝上(Ｂ)买一注福利彩票一定会中奖(Ｃ)把4个球放入三个抽屉中，其中一个抽屉中至少有2个球(Ｄ)掷一枚六个面分别标有1，2，3，4，5，6的均匀正方体骰子，骰子停止转动后奇数点朝上 5. 如图，⊙O 的半径为5，弦AB 的长为8，点M 在线段AB （包括端点A B ，）则OM 的取值范围是 ( )(Ａ) 35OM ≤≤ (Ｂ) 35OM <≤ (Ｃ) 45OM ≤≤(Ｄ) 45OM <≤6．下列语句错误的是 （ ）（A ）如果0=k 或0=a ，那么0=k ；（B ）如果m 、n 为实数，那么a mn a n m )()(=；（C ）如果m 、n 为实数，那么n m n m +=+)(；（D ）如果m 、n 为实数，那么m m m +=+)(．7．计算：=-12. BA CDBE O8.已知53=-a b a ，那么ba 的值等于 . 9.全球每小时约有510000000吨污水排入江河湖海，用科学记数法表示为 吨.10.已知∠α与∠β互余，且∠α=15°，则∠β为 度.11．甲、乙两人在射击训练中，射击的次数相同，且命中环数的平均数相同，方差分别为7.8和4，那么甲、乙两人在这次射击中成绩比较稳定的是 ．12．计算：1(23)(64)2a b b a +--= ． 13．函数1-=x y 中自变量ｘ的取值范围是 .14. 如图，在△ABC 中，∠A ＝60°，按图中虚线将∠A 剪去后，12+∠∠等于 度.15. 如图，将AOB △绕点O 逆时针旋转90，得到A OB ''△．若点A 的坐标为()a b ，，则点A '的坐标为 ．(第17题) 16．掷一枚质地均匀的正方体骰子，骰子的六个面上分别刻有1到6的点数，掷得面朝上的点数为奇数的概率为 ．17．已知：在平面直角坐标系中有两点A （－1，1），B （3，2），在x 轴上找出点C ，使△ABC 为等腰三角形，则点C 的坐标为 ． 18.△ABC 中， AC 、BC 上的中线BE 、AD 垂直相交于点O ，若BC ＝10，BE ＝6，则AB 的长为 ．新和民办新和中学初三数学选择填空练习（三）1．能使分式122--x x x 的值为零的所有x 的值是（ ） A 、0=x B 、1=x C 、0=x 或1=x D 、0=x 或1±=x2．代数式11--+y x，运算答案正确的是（ ） （A ）y x xy -- （B ）xy y x + （C ）xy y x -- （D ）yx xy + 3.下列各条件中，不能判定两个三角形必定全等的是 ……………………………（ ）（A ）两边及其夹角对应相等；（B ）三边对应相等；B（C ）两角及一角的对边对应相等； （D ）两边及一边的对角对应相等.4．在Rt △ABC 中，∠C ＝90°，AB ＝6，AC ＝2，则sinA ＝ （ ）(A) 13 （B ）23 （C ）23 2 （D ）235. 一个圆的圆心坐标是（－2，1），半径是5，这个圆与x 轴的关系是………（ ）（A ）相离 （B ）相切 （C ）相交 （D ）不能确定6. 下列图形：①线段；②等腰梯形；③矩形；④圆．其中是轴对称图形，但不是中心对称图形的有…………………………………………………（ ）Ａ．1个； Ｂ．2个； Ｃ．3个； Ｄ．4个7．分解因式：82a 2- =_________.8．在我国的建筑中，很多建筑图形具有对称性，右图是一个破损瓷砖的图案，请把它补画成中心对称图形.9. 已知a ＜b ＜0，则点A （ab ，b ）在第 象限．10.二次函数1322-+=x x y 的图象的对称轴是________，顶点坐标__________11．已知e 是单位向量，a 与e 的方向相反，且长度为5，则a 用e 表示是___________．12. 已知一传送带和地面所成斜坡的坡度1:2.4，如果把物体从地面送到5米高的地方，那么物体经过的路程为________米。
13.△ABC 的周长为28,则连结三边中点所成的三角形周长__________14.一个布袋中有4个红球与8个白球，除颜色外完全相同，那么从布袋中随机摸一个球是白球的概率是 ．15已知数3、6，请再写出一个数，使这三个数中的一个数是另外两个数的比例中项．这个数是 （只需填写一个数）16.一个圆弧形门拱的拱高为1米，跨度为4米，那么这个门拱的半径为 _米．17.在平面直角坐标系内，从反比例函数y ＝xk （k ＞0）的图象上的一点分别作x 、y 轴的垂线段，与x 、y 轴所围成的矩形面积是12，那么该函数解析式是 ．18.矩形ABCD 中，AB ＝5，BC ＝12 ．如果分别以A 、C 为圆心的两圆相切，点D 在圆C 内，点B 在圆C 外，那么圆A 的半径r 的取值范围是 ．填空、选择专项练习（四）1、下列计算正确的是（ ）（A ）x 5＋x 5＝x 10 ; （B ）x 5·x 5＝x 10 ; （C ）（x 5）5＝x 10 ; （D ）x 20÷x 2＝x 10.2、下列方程中，没有实数根的方程是（ ）A B C D E 1 2 第（13）题图（A ）22(3)2x x -+=；（B ）022=+-x x ；（C ）210x x x +=-； （D ）x x -=+2． 3、下列图形中是中心对称图形，但不是轴对称图形的是 （ ）（A ）角 （B ）线段 （C ）等边三角形 （D ）平行四边形4、下列函数中，y 随x 的增大而减小的是（ ）（A ）x y 21=； （B ）x y 21-=； （C ）x y 2=； （D ）x y 2-=． 5、如果等腰三角形中的两条边长分别是2和5，那么底角的余弦为（ ）A 、52B 、51或45C 、45D 、51 6、四边形ABCD 中，分别给出以下条件：①A B ∥CD ；②AB=CD ；③A D ∥BC ；④A D=BC ； ⑤∠A =∠C 。
则下列条件组合中，不能判定四边形ABCD 为平行四边形的是 （ ）（A ）①②； （B ）①③； （C ）①④； （D ）①⑤。
7、如果一个数的平方等于5，那么这个数是： 。
8、方程132=+x 的解为： 。
9、在实数范围内因式分解：=+232x x －_______________；10、如图，如果将弓形ACB 沿AB 弦翻折，弧ACB 恰好过圆心O 。
那么∠AOB=__________ 度．11、如图，直升机飞行时,高度保持为100米。
飞机在点A 处看到地面控制点C 的俯角为11018’。
从点A 到达控制点C 上空B 处，飞机还要飞_______米.(sin11018’=0.196,cos11018’=0.981,tg11018’=0.200,ctg 11018’≈5.00)12、已知菱形的两条对角线的长分别为32、2，则此菱形的边长是 .13、如图，已知AB ＝AD ，∠1＝∠2，要使△ABC ≌△ADE ，还需添加的条件是（只需填一个） ．14、某飞机在离地面1200米的上空测得地面控制点的俯角为60°，此时飞机与该地面控制点之间的距离是 米． 15、一次函数32-=x y 与x 轴的交点坐标为 。