基础知识过关练习二

鲁教版2020九年级数学上册期中综合复习基础过关练习题2（附答案详解） 1．如图，在Rt ∠AOB 的平分线ON 上依次取点C ，F ，M ，过点C 作DE ⊥OC ，分别交OA ，OB 于点D ，E ，以FM 为对角线作菱形FGMH ，已知∠DFE=∠GFH=120°，FG=FE ，设OC=x ，图中阴影部分面积为y ，则y 与x 之间的函数关系式是（ ）A ．y=32xB ．y=23xC ．y=223xD ．y=323x 2．已知二次函数y ＝ax 2＋bx ＋c (a ≠0)的图象如图所示，下列说法错误的是( )A ．图象关于直线x ＝1对称B ．函数y ＝ax 2＋bx ＋c (a ≠0)的最小值是－52C ．－1和3是方程ax 2＋bx ＋c ＝0(a ≠0)的两个根D ．当x ＜1时，y 随x 的增大而增大 3．某商品的进价为每件30元，现在的售价为每件40元，每星期可卖出150件．市场调查反映：如果每件售价每涨1元（售价每件不能高于45元），那么每星期少卖10件．设每件售价为x 元（x 为非负整数），则若要使每星期的利润最大且每星期的销量较大，x 应为多少元？( )A ．41B ．42C ．42.5D ．434．如图,数轴上点A 表示的数是-1,原点O 是线段AB 的中点,∠BAC=30，∠ABC=90°,以点A 为圆心,AC 长为半径画弧,交数轴于点D,则点D 表示的数是A 231-B 23C 43D 431- 5．一件商品原价为50元，连续两次降价，降价率均为x ，两次降价后该商品的售价价格为y 元，则y 与x 的函数关系式为（ ）A ．()501y x =-B ．250(1)y x =-C ．250y x =-D ．502y x =-6．已知抛物线y=ax 2+bx+c(a ≠0)在平面直角坐标系中的位置如图所示，则下列结论中正确的是（ ）A ．abc >0B ．a+b+c >0C ．c <0D ．b <07．计算：22sin 45cos 45︒+︒的值为（ ）A ．2B ．12C ．1D ．38．如果以312/m h 的速度向水箱进水，5h 可以注满．为了赶时间，现增加进水管，使进水速度达到()3/Q m h ，那么此时注满水箱所需要的时间()t h 与()3/Q m h 之间的函数关系为（ ）A ．60t Q =B ．60t Q =C ．6012t Q =-D ．6012t Q =+ 9．物体在地球的引力作用下做自由下落运动，它的运动规律可以表示为：212s gt =．其中s 表示自某一高度下落的距离，t 表示下落的时间，g 是重力加速度．若某一物体从一固定高度自由下落，其运动过程中下落的距离s 和时间t 函数图象大致为（ ）A ．B ．C ．D ． 10．把抛物线22y x =向右平移2个单位，然后向下平移1个单位，则平移后得到的抛物线解析式是（ ）A ．22(2)1y x =-+-B ．22(2)1y x =--+C ．22(2)1y x =++D ．22(2)1y x =--11．如图，Rt △ABC 中，∠ACB=90°，CD ⊥AB ，垂足为D ，若AD=BC ，则cos ∠B=_____.12．二次函数2y ax bx c =++的图象如图所示，则①abc ，②24b ac -，③2a b +，④a b c ++这四个式子中，值为正数的有________（填序号）．13．两个反比例函数3y x =，6y x=在第一象限内的图象如图所示，点P 1，P 2，P 3，…，P 2011在反比例函数6y x=图象上，它们的横坐标分别是x 1，x 2，x 3，…，x 2011，纵坐标分别是1，3，5，…，共2011个连续奇数，过点P 1，P 2，P 3，…，P 2011分别作y 轴的平行线，与3y x =的图象交点依次是Q 1（x 1，y 1），Q 2（x 2，y 2），Q 3（x 3，y 3），…，Q 2005（x 2011，y 2011），则y 2011=________．14．如图是二次函数2y ax bx c =++图象的一部分，图象过点A （﹣3，0），对称轴为直线x =﹣1，给出以下结论：①abc ＜0，②24b ac -＞0，③4b +c ＜0，④若B 15(,)2y -、C 21(,)2y -为函数图象上的两点，则12y y ，⑤当31x -≤≤时，0y ≥．其中正确的结论是（填写代表正确结论的序号） ．15．若函数y=(k 2－4)x 2+(k+2)x+3是二次函数，则k______.16．如图，正方形ABCD 的顶点A ，B 在函数k y x=（x ＞0）的图象上，点C ，D 分别在x 轴，y 轴的正半轴上，当k 的值改变时，正方形ABCD 的大小也随之改变．（1）当k =2时，正方形A ′B ′C ′D ′的边长等于____．（2）当变化的正方形ABCD 与（1）中的正方形A ′B ′C ′D ′有重叠部分时，k 的取值范围是______________．17．如图,商业大厦与电视台大厦的大楼顶部各有一个射灯,两条光柱的仰角(即光柱与水平面的夹角)∠2,∠3分别是60°,40°,则光柱相交时(在同一个平面内)的夹角∠1=__°.18．如图，一艘渔船正以60海里/小时的速度向正东方向航行，在A 处测得岛礁P 在东北方向上，继续航行1.5小时后到达B 处，此时测得岛礁P 在北偏东30°方向，同时测得岛礁P 正东方向上的避风港M 在北偏东60°方向．为了在台风到来之前用最短时间到达M 处，渔船立刻加速以75海里/小时的速度继续航行_____小时即可到达．（结果保留根号）19．已知点()14,A y -、()23,B y -三点都在抛物线22y x =+的图象上，则1y 、2y 的大小关系是________．（填“<、>、=”）20．抛物线y=2x 2+6x+c 与x 轴的一个交点为（1，0），则这个抛物线的顶点坐标是_____． 21．如图1，经过原点O 的抛物线()y ax2bx a 0=+≠与x 轴交于另一点3A ,02⎛⎫⎪⎝⎭，在第一象限内与直线y x =交于点()B 2,t ． ()1求这条抛物线的表达式；()2在第四象限内的拋物线上有一点C ，满足以B ，O ，C 为顶点的三角形的面积为2，求点C 的坐标；()3如图2，若点M 在这条抛物线上，且MBO ABO ∠∠=，①求点M 的坐标；②在()2的条件下，是否存在点P，使得POC∽MOB？若存在，求出点P的坐标；若不存在，请说明理由．22．某商场销售一种商品，在一段时间内，该商品的销售量y（千克）与每千克的销售价x（元）满足一次函数关系（如图所示），其中30≤x≤80.（1）求y关于x的函数解析式；（2）若该种商品每千克的成本为30元，当每千克的销售价为多少元时，获得的利润为600元？23．如图，抛物线y=ax2+bx﹣4（a≠0）与x轴交于A（2，0）、B（﹣4，0）两点，与y 轴交于点C，矩形DEFG的一条边DE在线段AB上，顶点F，G分别在线段BC、AC上．（I）求抛物线的解析式；（II）若点D的坐标为（m，0），矩形DEFG的面积为S，求S与m的函数关系式，并指出m的取值范围；（III）当矩形DEFG的面积S取最大值时，连接DF并延长至点M，使FM=k•DF．若点M 在抛物线上，求k的值．24．一次函数y kx b =+的图象经过点()A 2,0，且与二次函数2y ax =的图象相交于B 、()C 2,4-两点．（1）求这两个函数的表达式及B 点的坐标；（2）在同一坐标系中画出这两个函数的图象，并根据图象回答：当x 取何值时，一次函数的函数值小于二次函数的函数值；（3）求△BOC 的面积．25．某商店将每件进价为80元的某种商店按每件110元出售，每天可售出100件．该商店想通过降低售价、增加销售量的方法来提高利润．经市场调查，发现这种商品每件每降价5元，每天的销售量可增加50件．设商品降价x 元，每天销售该商品获得的利润为y 元．（1）求y （元）关于x （元）的函数关系式，并写出x 的取值范围．（2）求当x 取何值时y 最大？并求出y 的最大值．（3）若要是每天销售利润为3750元，且尽可能最大的向顾客让利，应将该商品降价多少元？26．如图，已知直线12y x =与双曲线k y x=（k ＞0）交于A 、B 两点，点B 的坐标为（﹣4，﹣2），C 为双曲线k y x =（k ＞0）上一点，且在第一象限内，若△AOC 的面积为6．（1）求双曲线的解析式；（2）求点C 的坐标．27．如图，直线l ：y ＝﹣12x+1与x 轴、y 轴分别交于点B 、C ，经过B 、C 两点的抛物线y ＝x 2+bx+c 与x 轴的另一个交点为A ．（1）求该抛物线的解析式；（2）若点P 在直线l 下方的抛物线上，过点P 作PD∥x 轴交l 于点D ，PE∥y 轴交l 于点E ，求PD+PE 的最大值；（3）设F 为直线l 上的点，以A 、B 、P 、F 为顶点的四边形能否构成平行四边形？若能，求出点F 的坐标；若不能，请说明理由．28．如图，在平面直角坐标系中，点A 是抛物线2142y x x =-+与x 轴正半轴的交点，点B 在抛物线上，其横坐标为2，直线AB 与y 轴交于点.C 点M 、P 在线段AC 上(不含端点)，点Q 在抛物线上，且MQ 平行于x 轴，PQ 平行于y 轴.设点P 横坐标为m ．（1）求直线AB 所对应的函数表达式．（2）用含m 的代数式表示线段PQ 的长．（3）以PQ 、QM 为邻边作矩形PQMN ，求矩形PQMN 的周长为9时m 的值．29．为了美化环境，学校准备在如图所示的矩形ABCD 空地上进行绿化，规划在中间的一块四边形MNQP 上种花，其余的四块三角形上铺设草坪，要求AM=AN=CP=CQ ，已知BC=24米，AB=40米，设AN=x 米，种花的面积为y 1平方米，草坪面积y 2平方米．（1）分别求y 1和y 2与x 之间的函数关系式（不要求写出自变量的取值范围）；（2）当AN 的长为多少米时，种花的面积为440平方米？（3）若种花每平方米需200元，铺设草坪每平方米需100元，现设计要求种花的面积不大于440平方米，设学校所需费用W （元），求W 与x 之间的函数关系式，并求出学校所需费用的最大值．30．如图，在Rt△ABC 中，∠C=90°，AC=3，BC=4，∠ABC 的平分线交边AC于点D，延长BD 至点E，且BD=2DE，连接AE.（1）求线段CD 的长;（2）求△ADE 的面积.参考答案1．B【解析】【分析】【详解】∵ON 是Rt ∠AOB 的平分线，∴∠DOC =∠EOC =45°， ∵DE ⊥OC ，∴∠ODC =∠OEC =45°， ∴CD =CE =OC =x ，∴DF =EF ，DE =CD +CE =2x ，∵∠DFE =∠GFH =120°， ∴∠CEF =30°，∴CF =CE •ta n30°，∴EF =2CF x ，∴S △DEF =12DE •CF 2， ∵四边形FGMH 是菱形，∴FG =MG =FE =3x ， ∵∠G =180°﹣∠GFH =60°， ∴△FMG 是等边三角形，∴S △FGH 2，∴S 菱形FGMH 2，∴y =S △DEF +S 菱形FGMH 2．故选B ．【点睛】此题考查了菱形的性质、等腰直角三角形的性质、等边三角形的判定与性质以及三角函数等知识．注意证得△OCD与△OCE是等腰直角三角形，△FGM是等边三角形是关键．2．D【解析】【分析】直接根据二次函数的图象进行解答即可．【详解】解：A、观察图象，可知抛物线的对称轴为直线x=1，则图象关于直线x=1对称，正确，故本选项不符合题意；B、观察图象，可知抛物线的顶点坐标为（1，﹣4），又抛物线开口向上，所以函数y=ax2+bx+c（a≠0）的最小值是－52，正确，故本选项不符合题意；C、由图象可知抛物线与x轴的一个交点为（﹣1，0），而对称轴为直线x=1，所以抛物线与x轴的另外一个交点为（3，0），则﹣1和3是方程ax2+bx+c=0（a≠0）的两个根，正确，故本选项不符合题意；D、由抛物线的对称轴为x=1，所以当x＜1时，y随x的增大而减小，错误，故本选项符合题意。

高二英语（上册）基础知识练习题高二上册英语基础知识过关练习二（120题）1. — Will our team win the match? — _________ Our players are the best! A．There's not much doubt about it．B．There's some doubt about it．C．No problem! D．It's hard to say．2. The editor's job is to keep the newspaper______ and _____ to the readers．A．balanced；interested B．balancing；interestingC．balanced；interesting D．balancing；interested3. My favourite article is____I wrote about the efforts to bring stolen cultural relics back to China.A．that B．one C．what D．which4. —Mum，is the pair of gloves _______ mine? —Yes．You have to wear another pair. A．washing B．have washed C．having washed D．being washed5. Please explain how two or more things are similar ________ different from each other．A．to or B．or C．to and D．and6. Mrs Green is a _________ teacher．A．born B．bearing C．experiencing D．experienced7.Hawking says that even the best theory can________ to be wrong．A．turn up B．turn down C．turn off D．turn out8.Everyone has his or her special_________ and_____________ ．A．skill；interest B．skills；interests C．skill；interests D．skills；interest9.He must be lying，for what he says doesn't__________ the fact．A．fit B．match C．suit D．get10. The result is a better understanding of the world__________.A．on the side B．on the sides C．on all the sides D．on all sides 11.—Is anything__________?—I can't decide which dress I should wear at my friend's wedding party．一I don't think it__________．A．the matter；the matter B．matter；matters C．the matter；matters D．matter；the matter12.The peaceful meeting ended when the company___________ a group of angry men_____________ sticks to fight with the citizens．A．sent off；armed with B．sent off；arming withC．sent out；armed with D．sent out；arming with13. collections of poetry，poems are put together.A．On B．In C．At D．Of14.If you are the judge，you must your personal feelings．A．set about B．set off C．set out D．set aside15.A new school building is under construction，so we can't walk we liked as before．A．as B．where C．which D．when16.He must be angry, for we heard the glass ________ on the floor.A. being brokenB. breakC. brokenD. to be broken17. reading is to mind，food is to blood．A．That B．Which C．How D．What18.Mrs Black went back to place she had found the diamond．A．the same；where B．the same；as C．the same；that D．as the same；as 19.----I’ll stand him if he is right．----You always support the man who is right．A．by B．up to C．with D．in for20．Modern English from about the middle 16th century．A．took place B．came about C．came into being D．happened 21.一What happened? 一Oh，the street is ．We have to go another way．A．blocked out B．blocked off C．blocked down D．blocked in 22.The good news inspired us hope．A．of B．to C．with D．in23.Five detectives were searching the murderer，Holmes ．A．for；including B．／；including C．for；included D．／；included 24．----What should we our new house ? 一Flowers，I think．A．equip；with B．fill；with C．decorate；with D．furnish；to25. —Is there anything________ in today’s newspaper?—Yes. Two places______ have just been opened to the public in Xi’an.A. of interest; of interestB. interesting; of interestsC. interested; interestingD. interesting; of interesting26. One way to catch a____ of the future is___ some of the major trends in contemporary society.A. glimpse; by examiningB. sight; to examineC. glimpse; to examineD. sight; examining27. Lily, there is a surprise______ for you.A. for storeB. for storingC. of storeD. in store28. The UK is a nation of different countries______ by a common language and culture.A. join togetherB. held togetherC. hold togetherD. made up of29. She hit him________ the head with a book but dropped the beautiful watch______ her wrist.A. on; onB. on; inC. in; aroundD. in; above30. ______ main points, they haven’t reached agreement.A. ForB. OnC. WithD. To31. I don’t believe you can do that, ________?She thought he was right, _______?A. can you; wasn’t heB. do I; wasn’t heC. can you; didn’t sheD. do I; didn’t he32. He differed from other people_____ he always looked farther ahead in his work.A. theB. in thatC. because ofD. in33. He announced, believe it or not, _______ he would never forgive her.A. thatB. /C. whichD. then34. My father made me a promise_______ I got a good mark he would buy me a present.A. thatB. whichC. that ifD. if35. Cells either divide too fast or at the wrong time, _______ it difficult for the body to function________.A. making; properlyB. make; properC. making; properD. make; properly36. Yesterday, Jane walked away from the discussion. Otherwise she________ something she would regret later.A. had saidB. saidC. might sayD. might have said37. ________ leaves the room last must make sure that all the windows are shut.A. WhoB. WhoeverC. WhomD. Whomever38. If I had worked harder at school，I_________ in a comfortable office now.A. would have satB. had satC. would be sittingD. would sit39. If only Marx______ this together with us!A. had seenB. should seeC. could seeD. would see40. ______ time，he'll make a first-class tennis player.A. Having givenB. To giveC. GivingD. Given41. I insisted _____to see a doctor，but he insisted nothing______ wrong with him.A. on him to go；should beB. be went；beC. he go；wasD. he should go；is42. The two strangers are talking warmly as if_________ friends for years.A. should beB. would beC. have beenD. were43. When a typhoon came, sand and pieces of wood were_______ into the air.A. swept upB. put upC. risen upD. jumped up44. James was upset today_______ because he had failed the exam, ______ because he had missed the live football match.A. no; butB. not; butC. not; thatD. not; /45. In fact, it is a place to find solutions_______.A. for the futureB. in futureC. in the futureD. for future46. His tastes are_______ mine.A. harmony withB. in harmony withC. harmony toD. in harmony to47. —Do you know Jim quarreled with his wife? —I didn’t know, _____.A. no do I careB. nor do I careC. I don’t care neitherD. I don’t care also48. It is_____ to write a letter, _______ to write history.A. one; the otherB. one thing; anotherC. some; someD. this; that49. After reading the article written by the boy, the teacher was very angry, and she_____ many sentences in it.A. crossed outB. cut offC. put onD. left off50. He was so excited that he could say nothing but hold his sister’s hands firmly. His sister said nothing, either, _______ tears coming into her face.A. surprisingB. surprisedC. excitedD. exciting51. Only after_______ reached eighteen_______ join the army.A. have you; you canB. have you; can youC. you have; you canD. you have; can you52. —Can children swim in this pool? —Yes, however, at no time______ alone.A. should they swimB. should swim theyC. shouldn’t they swimD. they should swim53. Dr Black comes from either Oxford or Cambridge, I can’t remember______.A. whereB. thereC. whichD. that54. If you______ your belief, you promise to succeed eventually.A. hugB. stick up forC. keep up withD. hold out55. The______ woman was______ to hospital by an ambulance.A. gas-poisoning; takenB. gas-poisoned; runC. gas-poisoning; carriedD. gas-poisoned; rushed56. A desert is a place_____ is_______ nothing but sand. But a camel can walk in the desert for months without any food or water.A. where; almostB. there; nearlyC. where there; almostD. that; almost57. The rapid growing population is one of the major problems____ the world. We must keep the number of people_____ growing so fast in order to let our sons and grandsons live a better life.A. faced; fromB. facing; /C. facing; fromD. faced; /58. The_____ street was the only_____ to her home.A. dead-end; accessB. dead-ending; wayC. dead-end; enterD. dead-ended; access59. The willingness you have to help the poor is important, _______ is the money you’ve got.A. alsoB. asC. notD. and60. Nowadays, a family can hardly manage_______ 5000 yuana year.A. inB. onC. withD. to61. For the sake of your poor family, I_______ you your debt.A. preventB. stopC. forgiveD. avoid62. There is_______ good_______ that we can have a day off. Let’s drink _____it!A. /; chance; toB. a; likelihood; toC. a; chance; forD. a; possibility; to63. I don’t know why girls always take______ him, maybe because he is such a handsome boy.A. inB. toC. onD. up64. If violence is_____ of a problem, we will live anything buta happy life.A. lessB. littleC. fewD. more65. The fire alarm last night alarmed the inhabitants with a(n)______ sound.A. alarmingB. frightenedC. afraidD. alarmed66. The woman thought she was beautiful and genial with the pretended smiles while it was______. Some of the children were scared.A. not suchB. uglyC. the other wayD. no oil-painting67. There is a great________ good manners and good company among the people of Salisbury.A. number ofB. deal ofC. manyD. much68. Every great culture in the past had its own ideas of beauty____ art and architecture.A. expressed onB. expressing onC. expressed inD. expressed of69. On seeing his girl friend, he hurried forward, ________ her by the hand.A. sang and heldB. sang and holdingC. singing and heldD. singing and holding70. Many things_____ impossible for Chinese to understand in the past are quite common today.A. consideringB. consideredC. to be consideredD. having been considered71. We managed to______ the enemies’ attack from all sides.A. stand in forB. stand out againstC. stand downD. stand over72. The women carrying babies, get on the train first, _______?A. will youB. don’t theyC. will theyD. don’t you73. I’ve learned______ , no matter what happens and how bad_____ seems today, life goes on and it will be better tomorrow.A. it; thatB. that; itC. it; itD. that; that74. The new sales policy______ well.A. hopesB. wishesC. expectsD. promises75. I gave him a warning, ________ he, to my disappointment, turned a deaf ear.A. of whichB. at whichC. to whichD. to it76. —Only when Dr. Yang arrives______ able to be operated on.—Yes, only________ save his life.A. is he; can heB. was him; he canC. is he; he canD. is him; can he77. You don’t feel____ to______ the modern buildings.A. invited; enter inB. inviting; enter inC. invited; enterD. inviting; enter78. It is said that our school is _______72 classes, not including international classes.A. consists ofB. made upC. make up ofD. made up of79. As is known, this girl has talent ______music.A .on B. with C. to D. for80. To tell you the truth, this film the scenes of my childhood.A. called upB. called onC. called outD. called for81.----Do you think the Opera House in Sydney makes you think of seashells?---- Of course. Some modern architecture _____ from nature.A. takes examplesB. take exampleC. give examplesD. set an example82. In doing the work, we can’t____________ the waste of a single minute.A. affordB. sufferC. manageD. take83. Not a single song __________ at yesterday’s party.A. she sangB. sang sheC. did she singD. she did sing84. Out ___________ , with a stick in his hand.A. rushed heB. he rushedC. did he rushD. he did rush85. They were greatly _________ by the beautiful scene of the lake.A. struckB. hitC. touchingD. beat86. It ______ unusual courage and determination to make the break with his family.A. tookB. neededC. spentD. shared.87.The pilot asked all the passengers on board to remain____ as the plane was making a landing.A. seatB. seatingC. seatedD. to be seating88. The word “moon” is an ancient word ____“month”.A. joined withB. joined toC. related withD. related to89. Mr. Smith, _____of the _____ speech, started to read a novel.A. tired; boringB. tiring ; boredC. tired ; boredD. tiring ;boring90. The town which had been burned _______ in a big fire isnow suffering _____ floods.A. up, fromB. down, fromC. down, toD. up, by91. The gestures are ＿＿＿＿by both Chinese and English speakers ＿＿＿having the same meanings．A．received；for B．accepted；as C．taken；with D．thought well；at92. British people always talk about weather.A. The; theB. \; \C. \; theD. The; \93. The food was so ___ that the child couldn’t help tasting it.A. smellyB. invitedC. interestingD. inviting94. He used to be a popular singer, but drug ____ his ruin.A. resulted fromB. contributed toC. attended toD. devoted to95.________ to the rest of the house by a long passage, the room seems very quiet.A. ConnectB. Being connectedC. ConnectedD. Connecting96. ___ is no possibility ____ he will be elected chairman.A. It / thatB. There / thatC. It / whetherD. There / what97.The fine weather was taken advantage ____ on a hike.A. to goB. to goingC. of goingD. of to go98.----Where did you meet him this morning ? ----It was in the hotel ___ he stayed.A. whereB. thatC. whichD. when99.The job is ___ to me becau se I’ve little experience . However, it is also ____.A. challenging / rewardingB. challenged/ rewardedC. challenging / rewardedD. challenged / rewarding100. How many of us ________, say, a meeting that is not important to us would be interested in the discussion?A. attendedB. attendingC. to attendD. have attended101. As is known to us all, _______ life in _______ modern worldis easier in some ways than _______ life our grandparents lived.A. the; a ; theB. a; the; theC. / ; the; theD. the; / ; the102. Ugly papers sold on streets are another problem of pollution. Young readers should ___ them.A. throw awayB. keep awayC. break offD. get rid of103. Tom looked at Jenny, tears ______ his eyes, and shouted out the words _______ in his heart for years.A. filling; having hiddenB. filled; hiddenC. filling; hiddenD. filled; hiding 104. ----What do you think of the furniture on exhibition?----Well, great! But I don't think much of _______ you bought.A. the oneB. itC. thatD. which105. About 170 people ______ killed and dozens more ________ still missing after a flood hit an Indonesian town last week.A. were; areB. have been; wereC. are; areD. had been; were106. We went ______ holes in the rock, _______ bridges, _______a dam and ______ the water.A. across, through, on, inB. through, across, over, intoC. into, through, over, onD. through, over, into, over107.The other day, my brother drove his car down the street at __I thought was adangerous speed.A. asB. whichC. whatD. that108. The British Isles______ a few island ______ Great Britain.A. makes up, containingB. forms, includingC. forms, containingD. consists of, including109. The doctor did _______ to save his brother’s life.A. all what he couldB. as much as possibleC. all could be doneD. as much as could110. Would you do the same if the war______ ?A. would break outB. were to break outC. will break outD. is broken out 111.The schoolboys and schoolgirls are walking along the street, _______ a small redcap.A. each of them hasB. they each haveC. every wearsD. each wearing 112.----I always take care when doing papers on the computer.----You meant it! One cannot be too ______ working on it.A. nervousB. sureC. anxiousD. careless113. He traveled to many mountain villages and saw many poor children out of school. This experience _______ his life.A. would changeB. had changedC. was to changeD. was changing 114. The article suggests that when a person _______ under unusual stress he should be especially careful to have a well-balanced diet.A. beB. isC. wereD. was115. Will you _____ the composition to see if there is any misspelling?A. get throughB. go overC. look intoD. take up116.It is ____ he often breaks the school rules _____ makes his head teacher unsatisfied with him.A. what; thatB. that; whatC. that; thatD. which; that117.The boy spent as much time watching TV as he _______ studying.A. hatedB. wasC. had D did118.Of particular interest to visitors ______ the large number of bookstores that sell books in different languages.A. have beenB. areC. wereD. is119. ----The education system rather than the teachers ___ to answer for the overburden on the students.----I agree. I hope the reform being carried out in our country at present will bring about the _______ results.A. are; desiredB. is desiredC. are; desiringD. is; desiring120. She dressed quickly and _______ her handbag, went to work.A. to carryB. carryingC. carriedD. to be carried高二上册英语基础知识过关练习二（120题）参考答案1—5 ACBDA 6—10ADBBD 11—15CCBDB 16—20CDAAC 21—25BCCCA 26—30CDBAB 31—35CBACA 36—40DBCCD 41—45CDABA 46—50BBBAC51—55DACAD 56—60CCABB 61—65CBBDA 66—70CBCCB 71—75BABDC 76—80CCDDA 81—85AACBA 86—90ACDAB 91—95BCDBC 96—100BDAAB 101—105CDCCA 106—110BBDBB 111—115DBCBB 116—120CDDBB。

2023年政法干警公安之公安基础知识练习题(二)及答案单选题（共60题）1、（）是我国公安工作的政治优势。

A.马列主义、毛泽东思想的指导B.全心全意为人民服务C.坚持群众路线D.党对公安工作的绝对领导【答案】 D2、2015年8月5日上午9时许，赵某携带一个提包，准备验票上火车，被值班民警例行检查，发现其提包中有六部手机。

因昨天该地区发生一起手机专卖店被盗窃案件一直未侦破，并且值班民警看到了案情通报，故此民警认为赵某可疑，遂向所长请示并经批准，于当日上午9时30分，将赵某带至了派出所值班室继续盘问，第二天（8月6日）上午9时，派出所排除赵某盗窃嫌疑予以放行。

A.四十八小时B.二十四小时C.十二小时D.八小时【答案】 A3、我国公安机关的基本职能是()。

A.专政职能和民主职能B.政治镇压职能和社会管理职能C.民主职能和社会管理职能D.社会管理职能和专政职能【答案】 A4、公安机关的性质是公安机关与其他国家机关相区别的根本属性。

下列对公安机关性质理解正确的是：A.作为国家的治安行政力量和刑事司法力量，不具有专政职能B.公安机关正确处理人民内部矛盾体现了民主职能C.公安机关与军队在职能上有区别，但都属于国家的武装力量D.公安机关是行政部门，具有刑事司法职能，是司法行政机关【答案】 B5、公安机关是政府的一个职能部门，但（）一般行政机关；人民警察是国家公务人员，但（）政府其他部门的公务员。

A.同于不同于B.同于同于C.不同于同于D.不同于不同于【答案】 D6、人民警察的（）包括积极履行公务、秉公执法、文明执勤三个方面。

A.政治纪律B.组织纪律C.工作纪律D.保密纪律【答案】 C7、特警支队抓捕小组准备进入某室抓捕犯罪嫌疑人时，判断房门开关朝向向内的依据是：A.房门把手在右边B.房门把手在左边C.看得见门折页D.看不见门折页【答案】 D8、清政府的中央警察机关是（）A.“巡警局”B.“巡警部”C.“警务学堂”D.“巡警学校”【答案】 B9、关于公安机关宣传群众工作，下列说法错误的是A.宣传群众工作是公安群众工作的核心内容B.宣传群众工作要坚持保密原则C.对外发布信息必须履行复核、审核手续D.宣传群众工作要坚持突出正面的要求【答案】 C10、派出所所长陈某驾车外出玩，因车速过快将行人李某撞伤。

2019年中考语文基础知识练习及答案(二)1.班级展开名著《水浒传》阅读活动，同学们就其第八回“林教头刺配沧州道鲁智深大闹野猪林”相关内容实行了交流探讨。

请你参加并回答相关问题。

(1)鲁智深的绰号为什么叫“花和尚”?鲁智深身上有花绣(纹身);身为和尚却不守清规戒律(喝酒、吃肉、打架等)。

(2)林教头被刺配沧州道的“前因”“后果”分别是什么?“前因”是高衙内想霸占林冲的娘子，高俅设计使林冲误入白虎堂(军机禁地);“后果”是林冲被逼入绝境，雪夜上梁山。

(3)林冲、鲁智深等好汉被逼上梁山的根本原因是什么?被逼上梁山的根本原因是官府腐朽，皇帝昏庸，奸臣当道，贪官横行，社会黑暗，阶级矛盾越来越深。

2.(2016·宁波模拟)阅读下面两个选段，回答问题。

选段一：说时迟，那时快，A先把两个拳头去蒋门神脸上虚影一影，忽地转身便走。

蒋门神大怒，抢将来，被A一飞脚踢起，踢中蒋门神小腹上，双手按了，便蹲下去。

A一踅，踅将过来，那只右脚早踢起，直飞在蒋门神额角上，踢着正中，望后便倒。

A追入一步，踏住胸脯，提起这醋钵儿大小拳头，望蒋门神脸上便打。

选段二：郑屠当不过，讨饶。

B喝道：“咄!你是个破落户，若是和俺硬到底，洒家倒饶了你。

你如今叫俺讨饶，洒家却不饶你!”又只一拳，太阳上正着，却似做了一个全堂水陆的道场，磬儿、钹儿、铙儿一齐响。

B看时，只见郑屠挺在地下，口里只有出的气，没了入的气，动掸不得。

(1)选段中A、B所代表的人物分别是武松、鲁达(鲁提辖)。

(2)这两个故事分别是武松醉打蒋门神、鲁提辖拳打镇关西。

(3)这两个人物都有这样相同的性格特点：疾恶如仇、勇而有谋、侠肝义胆等。

3.(2016·湖州模拟)阅读下面片段，回答问题。

片段一：……我多祝福你能常在我的身旁!你的A真是可怜已极。

得知道我的贵的一部分，我的听觉，大大地衰退了。

当我们同在一起时，我已觉得很多病象，我瞒着，但从此越来越恶化……还会痊愈吗?我当然如此希望，不过非常渺茫;这个类的病是无药可治的。