周练五

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2009瑞金一中高三数学周练五(理数)

2009瑞金一中高三数学周练五(理数)

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19. (本小题满分 12 分) 如图,平面 PCBM⊥平面 ABC,∠PCB=90°,PM∥BC, 直线 AM 与直线 PC 所成的角为 60°, 又 AC=1,BC=2PM=2, ∠ACB=90° (Ⅰ)求证:AC⊥BM; (Ⅱ)求二面角 M-AB-C 的正切值; (Ⅲ)求多面体 P-MABC 的体积. 20. (本小题满分 12 分) 已知 A、B、C 是直线 l 上的三点, 向量 OA, OB, OC 满足:OA [ y 2 f (1)] OB ln( x 1) OC
B、2009
C、2007
(a,b)的个数为 ( A.30
A )3 B.35
6
(Ⅱ)写出ξ 的分布列,并求ξ 的数学期望.
C.40
2
D.45
12
二、填空题:本大题共 4 小题,每小题 4 分,共 16 分, 13. 设 x 2 2 x 2 a0 a1 x 2 a2 x 2 a12 x 2 ,其中 ai i 0,1, 2, ,12 为 实常数,则 a0 a1 2a2 3a3 12a12 10
∩( CU B )={1,5},则下列结论中正确的是( A. 3 A,3 B 2. B. 3 A,3 B C )
3 3 i 2 2
3i 的共轭复数是( 1 i
D
) D. 3 A,3 B
C. 3 A,3 B
A.
3 3 i 2 2
B.
C.
ቤተ መጻሕፍቲ ባይዱ
3 3 i 2 2
1 1 点,并且满足 NA NB, 当 [ , ] 时,求直线 AB 的斜率的取值范围. 5 3

高二物理周练五

高二物理周练五

滑县一中二年级12月月考物理试卷(磁场)命题人:赵勇民考试时间12月7日14:10----15:40 一、选择题(共15个小题,每小题4分,共60分,其中1——11每题仅有一个选项是正确的,12——15题有多个选项正确的,全部选对的得4分,选对但不全的得2分,有错选的得0分)1、如图所示,a、b、c三枚小磁针分别在通电螺线管的正上方、管内和右侧,当这些小磁针静止时,小磁针N极的指向是()A.a、b、c均向左B.a、b、c均向右C.a向左,b向右,c向右D.a向右,b向左,c向右2、如图所示,一根有质量的金属棒MN,两端用细软导线连接后悬于a、b两点,棒的中部处于方向垂直纸面向里的匀强磁场中,棒中通有电流,方向从M流向N,此时悬线上有拉力,为了使拉力等于零,可以()A.适当减小磁感应强度B.使磁场反向C.适当增大电流D.使电流反向3、如图所示,电流从A点分两路通过对称的环形支路汇合于B点,则环形支路的圆心O处的磁感应强度为()A.垂直于环形支路所在平面,且指向“纸外”B.垂直于环形支路所在平面,且指向“纸内”C.大小为零D.在环形支路所在平面内,指向B点4、在图中,水平导线中有电流I通过,导线正下方的电子初速度的方向与电流I的方向相同,则电子将()A.沿路径a运动,轨迹是圆B.沿路径a运动,轨迹半径越来越大C.沿路径a运动,轨迹半径越来越小D.沿路径b运动,轨迹半径越来越小5、如图中的D为置于电磁铁两极间的一段通电直导线,电流方向垂直于纸面向里.在开关S接通后,导线D所受磁场力的方向是()A.向上B.向下C.向左D.向右6、如图所示为两根互相平行的通电导线a、b的横截面图,a、b的电流方向已在图中标出.那么导线a中电流产生的磁场的磁感线环绕方向及导线b所受的磁场力的方向应分别是()A.磁感线顺时针方向,磁场力向左C.磁感线逆时针方向,磁场力向左B.磁感线顺时针方向,磁场力向右D.磁感线逆时针方向,磁场力向右7、1998年发射的“月球勘探者号”空间探测器,运用最新科技手段对月球进行近距离勘探,在研究月球磁场分布方面取得了新的成果.月球上的磁场极其微弱,探测器通过测量电子在月球磁场中的轨迹来推算磁场强弱的分布,图中是探测器通过月球A、B、C、D四个位置时,电子运动的轨迹照片.设电子速率相同,且与磁场方向垂直,其中磁场最强的位置是()8、如图所示,ab是一弯管,其中心线是半径为R的一段圆弧,将它置于一给定的匀强磁场中,磁场的方向垂直于圆弧所在平面,并指向纸外.有一束粒子对准a端射入弯管,粒子有不同的速度,不同的质量,但都是一价正离子.则()A.只有速度大小一定的粒子可以沿中心线通过弯管B.只有质量大小一定的粒子可以沿中心线通过弯管C.只有m v乘积大小一定的粒子可以沿中心线通过弯管D.只有能量大小一定的粒子可以沿中心线通过弯管9、如图所示,在x轴上方存在着垂直于纸面向里、磁感应强度为B的匀强磁场.一个不计重力的带电粒子从坐标原点O处以速度v进入磁场,粒子进入磁场时的速度方向垂直于磁场且与x轴正方向成120°角.若粒子穿过y轴正半轴后在磁场中到x轴的最大距离为a,则该粒子的比荷和所带电荷的正负是()A.3v 2aB,正电荷 B .v 2aB ,正电荷C.3v 2aB,负电荷 D .v2aB,负电荷 10、如图所示,两个横截面分别为圆形和正方形的区域内有磁感应强度相同的匀强磁场,圆的直径和正方形的边长相等,两个电子分别以相同的速度分别飞入两个磁场区域,速度方向均与磁场方向垂直,进入圆形磁场的电子初速度方向对准圆心,进入正方形磁场的电子初速度方向垂直于边界,从中点进入.则下面判断错误的是( )A .两电子在两磁场中运动时,其半径一定相同B .两电子在两磁场中运动的时间有可能相同C .进入圆形磁场区域的电子可能先飞离磁场D .进入圆形磁场区域的电子可能后飞离磁场11、半径为r 的圆形空间内,存在着垂直于纸面向里的匀强磁场,一个带电粒子(不计重力)从A 点以速度v 0垂直于磁场方向射入磁场中,并从B 点射出.∠AOB =120°,如图所示,则该带电粒子在磁场中运动的时间为( )A.3πr 3v 0B.23πr 3v 0C.πr 3v 0D.3πr3v 012、通电矩形线框abcd 与长直通电导线MN 在同一平面内,如图所示,ab 边与MN 平行.关于MN 的磁场对线框的作用力,下列说法正确的是( )A .线框有两条边所受的安培力方向相同B .线框有两条边所受的安培力大小相等C .线框所受的安培力的合力方向向左D .线框所受的安培力的合力方向向右13、用回旋加速器来加速质子,为了使质子获得的动能增加为原来的4倍,原则上可以采用下列哪几种方法( )A .将其磁感应强度增大为原来的2倍B .将其磁感应强度增大为原来的4倍C .将D 形盒的半径增大为原来的2倍 D .将D 形盒的半径增大为原来的4倍14、如图所示,一束正离子先后通过正交电场磁场区域Ⅰ和匀强磁场区域Ⅱ,如果这束正离子流在区域Ⅰ中不偏转,进入区域Ⅱ后偏转半径又相同,则说明这些正离子具有相同的( )A .电荷B .质量C .速度D .比荷15、长为L 的水平极板间,有垂直纸面向里的匀强磁场,磁感应强度为B ,板间距离也为L ,极板不带电.现有质量为m ,电荷量为q 的带正电粒子(重力不计),从左边极板间中点处垂直磁场以速度v 水平入射,如图所示.欲使粒子不打在极板上,可采用的办法是 ( )A .使粒子速度v <qBL4mB .使粒子速度v >5qBL4mC .使粒子速度v >qBL4mD .使粒子速度qBL 4m <v <5qBL4m二、非选择题(解答要有必要的过程和文字说明,直接写出结果的不得分) 16、(8分)如图所示,通电导体棒ab 质量为m 、长为L ,水平放置在倾角为θ的光滑斜面上,通以如图所示方向的电流,电流为I ,欲使导体棒ab 静止在斜面上.(1) 若磁场方向竖直向上,则磁感应强度B 为多大? (2) 若要求磁感应强度最小,求磁感应强度的大小和方向?17、(8分)一宽为L 的匀强磁场区域,磁感应强度为B ,如图所示,一质量为m 、电荷量为-q 的粒子以某一速度(方向如图所示)射入磁场.若不使粒子从右边界飞出,则其最大速度应为多大?(不计粒子重力) 18、(10分)如图所示,在x 轴上方有磁感应强度大小为B ,方向垂直纸面向里的匀强磁场.x 轴下方有磁感应强度大小为B /2,方向垂直纸面向外的匀强磁场.一质量为m 、电荷量为-q 的带电粒子(不计重力),从x 轴上O 点以速度v 0垂直x 轴向上射出.求:(1)射出之后经多长时间粒子第二次到达x 轴; (2)粒子第二次到达x 轴时离O 点的距离.19、(14分)如图所示,在一个圆形区域内,两个方向相反且都垂直于纸面的匀强磁场分布在以直径A 2A 4为边界的两个半圆形区域Ⅰ、Ⅱ中,直径A 2A 4与A 1A 3的夹角为60°.一质量为m 、电荷量为+q 的粒子以某一速度从Ⅰ区的边缘点A 1处沿与A 1A 3成30°角的方向射入磁场,随后该粒子以垂直于A 2A 4的方向经过圆心O 进入Ⅱ区,最后从A 4处射出磁场.已知该粒子从射入到射出磁场所用的时间为t ,求Ⅰ区和Ⅱ区中磁感应强度的大小B1和B2(忽略粒子重力).滑县一中二年级12月月考物理答题卷赵勇民2013.12.7 16、17、18、19、高二月考物理试题答案一、 选择题二、 计算题由平衡条件得B ′IL cos α=mg sin θ故B ′=mg sin θIL cos α当α=0°时,B ′最小,其最小值为 B min ′=mg sin θIL由于安培力方向平行斜面向上,电流方向垂直纸面向里,由左手定则可判断磁场方向垂直斜面向上.答案:(1)mg tan θIL(2)mg sin θIL垂直斜面向上17、解析:要使粒子不从右边界飞出,则当速度达到最大时运动轨迹应与磁场右边界相切,由几何知识可知半径r 满足r +r cos θ=L 解得r =L1+cos θ由于粒子做圆周运动的向心力由洛伦兹力提供,故有 Bq v =m v 2r解得v =Bqr m =BqLm (1+cos θ).答案:BqLm (1+cos θ)18、粒子第二次到达x 轴时离O 点的距离s =2r 1+2r 2=6m v 0qB .答案:(1)3πmqB (2)6m v 0qB19、解析:设粒子的速度为v ,在Ⅰ区中运动半径为R 1,周期为T 1,运动时间为t 1;在Ⅱ区中运动半径为R 2,周期为T 2,运动时间为t 2;磁场的半径为R.(1)粒子在Ⅰ区运动时,轨迹的圆心必在过A 1点垂直速度的直线上,也必在过O 点垂直速度的直线上,故圆心在A 2点,由几何知识和题意可知,轨道半径R 1=R又R 1=mv qB 1,则:R =mvqB 1①轨迹所对应的圆心角θ1=π/3,则运动时间t 1=T 16=2πm 6qB 1=πm3qB 1.②(2)粒子在Ⅱ区运动时,由题意及几何关系可知R 2=R/2,又R 2=mvqB 2则R =2mv qB 2③轨迹对应的圆心角θ2=π,则运动时间t 2=T 22=πmqB 2④又t 1+t 2=t ,将②④代入得:πm 3qB 1+πmqB 2=t ⑤由①③式联立解得B 2=2B 1代入⑤式解得:B 1=5πm 6qt ,B 2=5πm 3qt .答案:5πm 6qt 5πm3qt。

上海外国语大学附属外国语学校高三上学期周练五英语试题含答案

上海外国语大学附属外国语学校高三上学期周练五英语试题含答案

上海外国语大学附属外国语学校高三上学期周练五英语试题含答案Exercise 51. We had great hopes of his success only ______ later.A.to disappointB. disappointingC. to be disappointedD. being disappointed2. ______ in the election, he went back to his native town, ______ with hard work.A. To be defeated…being worn outB. Being defeated…to be worn outC. Defeated…worn outD. Defeating…wearing out3. He turned his energies to ______ a better way of curing the disease.A. find outB. search forC. findD. looking for4. She felt like ______, but she managed ______ back her tears before others.A. crying…to keepB. crying…keepingC. to cry…to keepD. to cry…keeping5. It was most thoughtful ______ me the reference book I needed for my research.A. your sendingB. for you to sendC. of you to sendD. that you send6. I have told you all I know but you look as if you ______ by my words.A. were hurtB. should be hurtC. had been hurtD. are hurt7. The tower has been rebuilt so that it looks as it ______ during the 12thcentury.A. couldB. used to beC. wasD. did8. Only ______ he would succeed in the end.A. Jane believeB. Jane believedC. believed JaneD. did Jane believe9. You can’t have him go to the party with you. H e has ______ things to do.A. good manyB. a lotC. manyD. a good many10. He is the man ______ he used to be.A. thatB. whoC. whomD. which11. You didn’t let me drive. If we ______ in turn, you ______ so tired.A. drove…didn’t getB. drove…wouldn’t getC. were driving…didn’t getD. had driven…couldn’t have got12. Not a singly reply ______ from my cousin who lives abroad.A. I receiveB. received IC. have I receivedD. I have received13. ______ many times, but he still couldn’t understand it.A. Having been toldB. Though he had been toldC. He had been toldD. Having told14. It is the ability to do the job ______ matters not where you come from or what you are.A. oneB. thatC. whatD. it15. ______ in London, Marx spent most of his time in the library.A. AsB. WhenC. WhileD. During16. If we can ______ our present difficulties, everything will beall right.A. get ridB. get awayC. get pastD. get over17. ______ to go to the show because we had a lot of work to do.A. All of us didn’t wantB. No one of us wantedC. None of us wantedD. We all didn’t want18. In order to improve English, ______.A. Jenny’s father bought her a lot of tapes.B. Jenny bought a lot of tapes for herself.C. a lot of tapes were bought by Jenny.D. a lot of tapes we re bought by Jenny’s father19. ----How do you like the work here?----I’m used to ______.A. doingB. be hereC. itD. being done20. We must raise more funds for our research, ______?A. shall weB. don’t weC. must weD. needn’t we21. The policeman soon picked out the person ______ be thought might be the thief.A. whichB. whoC. whomD. that22. ----Are you coming to Jeff’s party?----I’m not sure. I ______ go to the concert instead.A. mustB. wouldC. shouldD. might23. This is an excellent exhibition, I like it better ______ I have seen.A. than anyB. than any otherC. than thatD. than all24. If you ______ that late movie last night, you wouldn’t be sleepy.A. haven’t watchedB. didn’t watchC. hadn’t watchedD. wouldn’t have watched25. I think parents should provide their children ______ decent food and clothing.A. byB. forC. toD. with26. The team looked good because the coach had them ______ every day.A. practiceB. to practiceC. practicedD. being practiced.27. ______ the best of my knowledge, the speech contest was sponsored by several schools.A. ByB. ToC. InD. With28. Without a computer he ______ 10 years experimenting to learn the same thing he has learned so far.A. ought to spendB. must have spentC. would spendD. might have spent29. The fact is that ______ great contributions, he remains very modest.A. though hisB. he madeC. for all hisD. however his30. What time do you expect the meeting we are going to attend to ______?A. break inB. break outC. break offD. break up31. The fish you bought in the market are ______ small.A. fairlyB. rather tooC. quite tooD. pretty too32. ----Who did you spend last weekend with?----______ .A. Palmer’sB. The Palmers’C. The PalmersD. The Palmer’s33. ----Waiter!----______----I can’t eat this. It’s too salty.A. Yes, sir?B. What?C. All right?D. Pardon?34. ----Will you stay for lunch?----Sorry ______. My brother is coming to see me.A. I mustn’tB. I can’tC. I needn’tD. I won’t35. John ______ himself, even though he was a little boy.A. should behaveB. didn’t behaveC. might behaveD. should have behaved36. I don’t think I’ll need any money but I’ll bring some ______.A. at lastB. in caseC. once againD. in time37. ______ a pity you missed the lecture given by the famous professor from California University.A. That’sB. It’sC. There’sD. What’s38. ----Isn’t the conclusion they came to very important?----______.A. No, it isB. Yes, it isn’tC. There’sD. What’s39. Have you asked her the reason ______ may explain her absence?A. thatB. whyC. becauseD. for which40. ----You ought to have come to see Steve win the match.----Yes, I know I ______.A. ought toB. oughtC. should haveD. both A and C41. ______ it rains or snows, I will go tonight.A. WhatB. WhateverC. WhetherD. If42. I was looking for the key ______ I thought I might have put it.A. whichB. thatC. wheneverD. wherever43. Have you noticed that there ______ showers every day so far this week?A. areB. will beC. have beenD. would be44. We appreciate ______ the full the teacher’s help.A. toB. atC. inD. on45. He will be more than glad to help you. Here “more than “means ______.A. overB. muchC. not onlyD. very46. The distance ______ light travels in one second is 300,000 kilometres.A. thatB. at whichC. by whichD. in which47. People can ______ the law if they want to correct an injustice.A. turn downB. turn offC. turn toD. turn up48. ----Will you be able to finish the work today?----______.A. I don’t know soB. I can’t answer soC. I’m not sure soD. I don’t expect so49. He would not be defeated in the next match so long as he ______ practicing.A. keptB. would keepC. had keptD. was keeping50. He is still weak ______ his illness.A. forB. withC. fromD. of51. The project of increasing the size of the harbor is ______ this year.A. to carry outB. to be carried outC. carrying outD. carried out52. “Li Ming is no cleverer than Zhang Hua.” This sentencemeans ______.A. Li Ming is as clever as Zhang HuaB. Li Ming is more clever than Zhang HuaC. Li Ming is not clever than Zhang Hua D Li Ming is as stupid as Zhang Hua53. Is there any reasonable doubt ______ he will win the prize in the contest?A. thatB. whetherC. whichD. if54. If you want to change for a double room you’ll have to pay ______ $15.A. anotherB. otherC. moreD. each55. Sorry, I can’t ______ you ______ my assistant.A. receive … asB. accept … asC. take on … likeD. get … like56. There is a bridge ______ the river.A. overB. throughC. crossD. above57. The road ______ trees leads to the museum.A. lined withB. lining withC. to line withD. which lines with58. Water is ______ the growth of crops.A. must toB. important ofC. necessary atD. essential to59. The greenhouses on the farm each ______ a glass roof.A. hasB. is equipped withC. haveD. are equipped60. ______ you require of your son should be to his benefit.A. ThatB. HowC. HoweverD. Whichever61. ______ I suggest, he always disagrees.A. WhatB. HowC. WhateverD. However62. Some people tend to speed while driving, ______ the danger to themselves and others.A. withoutB. howeverC. no matter howD. regardless of63. Jason ______ that job when it was offered, therefore he missed a golden opportunity.A. shall takeB. should takeC. shall have takenD. should have taken64. ______ the big crowd watching the procession, we avoided the main streets.A. Owing toB. BecauseC. Due toD. As65. Darkness ______, Helen kept wandering through the stores, hoping to get ideas for a birthday present.A. set inB. setting inC. was setting inD. had set in66. They searched ______ the books on the shelf to find a book by Dickens.A. forB. throughC. overD. across67. It is desirable that automation equipment ______ turning as much of the time as possible.A. keepsB. could be keptC. be keptD. must keep68. George did not do well in the class because______.A. he studied badB. he was not good studyingC. he was a badly studentD. he failed to study properly69. You have improved your spoken English greatly ______ this year.A. inB. by farC. so longD. so far70. The long run Bill took left him ______ breath.A. out ofB. was out ofC. withoutD. short71. I saw him in the club ______ yesterday.A. sometimeB. sometimesC. some timeD. some times72. The line was busy. Someone______the phone.A. usedB. should have usedC. must useD. must have been using73. Have you travelled by sea ______?A. lastB. laterC. lateD. lately74. Nancy _______ a rich merchant since she graduated fromcollege.A. has marriedB. was married withC. marriedD. has been married to75. She looked quite young _______ her age.A. atB. ofC. byD. for76. She can’t stand _______ when she goes to see t he dentist.A. to waitB. keeping waitingC. to keep waitingD. being kept waiting77. _______ the girls in town, Betty is the friendliest.A. From allB. All amongC. Of allD. All of78. I came across Margaret on my way to work this morning,I t was the first time I _______ her in months.A. seeB. sawC. have seenD. had seen79. They had to sell their house _______ they could pay off their father’s gambling debts.A. becauseB. thatC. unlessD. so80. Do you know the number of the boxers that _______ in the past ten years?A. have been injuredB. bas been injuredC. has injuredD. have injured81. A number of problems _______ to be solved though we have had the meeting.A. remainB. remainedC. leftD. leave82. _______ their stay in China, the foreigners visited many places.A. InB. DuringC. OnD. By83. He is looking forward _______ a chance to travel a lot in foreign countries.A. havingB. to haveC. to havingD. have84. _______ programs are beginning this morning.A. Several Chinese radio very goodB. Several very good Chinese radioC. Several very good radio ChineseD. Several very Chinese good radio85. By next summer we _______ in the same department at this college for three years.A. will studyB. have studiedC. will be studyingD. will have been studying86. The singer and dancer _______ a concert in the coming week.A. is going to giveB. are going to holdC. are givingD. are to give87. ----Brown used to live with his cousin when he was at college.----Oh, _______ he?A. didn’tB. useC. didD. usedn’t88. His language is not fit _______ because it is too full of swear words.A. to be repeatedB. repeatingC. repeatedD. being repeated89. To me his new book does not _______ so good as his earlier book on this subject.A. appearB. lookC. appear to beD. both A and C90. They reduced the man who made a slip of the tongue _______ by laughing at him.A. to silenceB. to be silentC. being silentD. to being silent91. Henry, one of the guests, _______ after the party when everyone had left.A. turned inB. turned upC. turned outD. turned off92. The driver applied the brakes, and the bus _______ sharply at the traffic lights.A. pulled upB. pulled inC. pulled downD. pulled on93. I said _______ as that in my speech last night.A. no such a thingB. not such thingC. not a thingD. no such thing94. He has always liked _______ machinery since he left school.A. to work onB. working outC. working withD. worked at95. My elder brother is older than I _______ two years.A. forB. byC. ofD. in96. Her aunt has left Beijing and does not live there. _______ my aunt.A. Neither doesB. So it is withC. So doesD. So has97. What was it _______ he hunted for?A. whichB. whatC. whereD. that98. The supermarket is ten miles _______ my home.A. for awayB. far fromC. far away fromD. away from99. The washing machine is out of order. Can you _______ it _______?A. get … goB. have … goneC. have … to goD. get … going100. The skirt made of pure silk _______ well.A. isn’t washedB. doesn’t washC. can’t be washedD. mustn’t be washedKeys:1-5CCDAC 6-10DDBDA 11-15DCCBC 16-20DCBCD 21-25BDBCD26-30ABDCD 31-35BCABD 36-40BBCAC 41-45CDCAD 46-50ACDAC51-55BDAAB 56-60AADCD 61-65CDDAB 66-70BCDDA 71-75ADDDD76-80DCDBA 81-85ABCBD 86-90ACADA 91-95BADCB 96-100BDDDB。

河北省高阳中学2013-2014学年高一上学期第五次周练 政治试题

河北省高阳中学2013-2014学年高一上学期第五次周练 政治试题

高一政治周练五一、选择题(每小题4分,共72分)1.消费受多种因素的影响,其中最主要的是( )①居民的收入②物价水平③人口数量④商品的性能、外观、质量、包装、商店位置、服务态度等A.①④B.①②C.②③ D.②④2.改革开放以来,我国的国民经济保持了持续、快速、健康的发展,人民的生活水平有了明显的提高。

这说明提高人民生活水平的根本途径是( )A.保持经济增长,增加居民收入B.多发纸币,提高人们的购买力C.繁荣市场,增加商品的供应量D.改变消费观念,提倡信贷消费3.随着我国经济的快速发展,汽车已进入寻常百姓家。

早富起来的一些人用现金购车,爱车族中的一些人贷款购车,还有一些人在持币观望,他们期待着汽车价格大幅度下跌,而占人口大多数的普通百姓则是望车兴叹,连梦也不敢做。

下列对这一现象认识正确的是( )③物价水平是影响人们的购买能力的一个重要因素④人们的收入差距过大会影响社会总体消费水平A.①② B.①②③C.②③④ D.①②③④4.对钱货两清消费和租赁消费的区别,下列认识正确的是( )A.前者在购物时付现款,后者在购物时不付现款B.前者是对有形商品的消费,后者是对劳务的消费C.前者是对生活必需品的消费,后者是对高档耐用品的消费D.前者会导致商品所有权发生转移,后者不会导致商品所有权发生转移5.“因为房子,我们害怕事业;因为房子,我们不敢创业;因为房子,我们被迫啃老;因为房子,我们不敢养育下一代。

”80后青年的自嘲表明( )A.我们的整体消费水平很低B.我们的整体物价指数很高C.“被消费”成为主要的消费方式D.我国的消费结构很不合理6.联合国哥本哈根气候峰会倡导“低碳生活”。

过“低碳生活”其实并不难。

少用1吨水可减少0.194千克碳排放,少坐一层电梯能减少0.218千克碳排放,少开空调l小时可减少0.621千克碳排放。

过“低碳生活”()A.有利于节约,但不利于扩大内需B.有利于绿色消费、可持续消费C.要量入为出、适度消费D.要避免盲从、理性消费7.新华网《从众心理作祟中学生消费讲“气派”》的文章说,身穿“背靠背”外套,脚踩“耐克”运动鞋,背着“阿迪达斯”双肩背包,戴着“斯沃琪”限量版手表,用着新款手机和MP4,骑着捷安特变速自行车……当前,部分中学生在日常生活消费中追求名牌的风气加剧。

“坚持高线,守住底线”周练五作文导写

“坚持高线,守住底线”周练五作文导写

于都中学2022-2023年高一下学期周练五作文导写一、原题呈现阅读下面的材料,根据要求写作。

(60分)有人认为,道德底线低的人有时比道德底线高的人占优势,你做不出来,他做得出来,所以他们总能如鱼得水。

但师长们告诫我们:要坚持“高线”,守住“底线”;只有守住“底线”,才是守住了为人的根本。

以上论述具有启示意义。

请结合材料写一篇文章,体现你的感悟与思考。

要求:选准角度,确定立意,明确文体,自拟标题:不要套作,不得抄袭;不得泄露个人信息;不少于800字。

二、审题立意指导1.明话题关键词:“底线”,是指做人做事的最低标准和基本要求。

2.明确话题区间:“道德底线低的人有时比道德底线高的人占优势”“守住了为人的根本”等信息限定了话题区间是为人处世的道德标准,行文时不能跳出道德区间谈底线,只能围绕“道德底线”做文章。

规则底线、理想底线、情感底线等等,都属偏题。

3.明确话题焦点:师长的话强调了“底线”之于为人的重要作用,其所说的“底线”,是指社会道德标准。

“有人认为,道德底线低的人有时比道德底线高的人占优势”说明个人的道德底线有高低之分,这里所说的“底线”是指个人道德标准。

那么话题的焦点应为个人道德标准与社会道德标准的正确关系以及对待二者的正确态度和做法。

三、阅卷反馈1.离题较少:大部分同学能抓住关键词“底线”进行写作,只有个别同学写“道德的重要性”、“守住边界”或道德以外的底线等。

部分同学点题意识薄弱。

2.结构混乱:很多同学不会拟分论点,或观点游离、空泛含糊不清,或分论点之间有交叉、不整齐,或者直接没有分论点。

3.主体段不规范:五个功能句往往只剩“观点句+阐释句”或“观点句+例证句”;很多同学议论空洞,论据匮乏,语言口语化,论证方法单一。

4.未完篇:少部分同学空白或者只写了几行,还有一些只写了五六百个字。

四、优秀示范1.优秀标题守住道德底线,成就美好人生守道德底线,固人之根本以底线为本,筑道德之魂道德底线,价值红线以“高线”之尺,画“底线”之本以底线之基,筑人生之本坚持高线,守住底线高线不降,底线不让2.优秀分论点(1)明德之善,须以古书为戒,今日为训,构筑道德底线。

沪教版小学语文三年级上册周周练五

沪教版小学语文三年级上册周周练五

三上语文周周练(五)班级姓名成绩一、填上合适的词语。

()的世界()的天鹅()的小狗()的世界()的天鹅()的小狗()的大海()的森林()的电影()的大海()的森林()的电影二、比一比组词。

瀑()()胞()()衬()()暴()()苞()()付()()陷()()胸()()惨()()险()()凶()()参()()三、写出近义词。

惊讶()争执()慌张()秀丽()依然()竟然()蕴藏()宁静()写出下列词语的反义词。

宁静()伸展()普通( )容易()浪费()紧张()四、照样子写句子。

例:大厅里亮堂堂的,地板像个巨大的盘子。

(1)瀑布像,又像。

(2)天花板像。

(3)旅行家树像。

(4)像。

五、选择正确的词语。

1、不但……而且……虽然……但是……一边……一边……(1)他()听电话,()把内容记录在纸上。

(2)林方是个好孩子,()学习认真,()乐于助人。

(3)()他已经筋疲力尽了,()仍然坚持着。

2、欢欣鼓舞一言不发络绎不绝笑容可掬(1)南京路上人来人往,()(2)老先生十分生气,板着脸,()地看着我们。

(3)老奶奶很慈祥,她常常()地给我们讲故事。

六、发挥你的想象,完成填空。

1、海底的动物吃东西时,行进时,遇到危险时会发出各种声音,有的像____________ ________,有的像_________ ___________,有的像_____________________,有的还像_________ ____________。

2、天鹅不时发出胜利的欢呼声:“克噜——克哩——克哩!”好像在说:“。

”七、读句子,然后照样子改写。

例:司机发现了情况,拉响了汽笛,使劲刹车,可火车停不下来……司机发现了情况,拉响了汽笛,使劲刹车,可火车怎么也...停不下来……(1)玛丽没想到孩子会爬到铁轨上去。

(2)天鹅们找不到食物。

八、阅读短文,完成练习。

(一)远离战争拥抱和平没有人问我愿不愿意,选择离开儿时的圣地。

哪怕是一粒飞翔的尘埃,也有它生存的权利。

江苏省高一化学 周练五 物质的量浓度及其配制

江苏省高一化学 周练五 物质的量浓度及其配制

周练五 ---------之物质的量浓度及其配制一、选择题(本题包括10小题,每小题5分,共50分) 请将选项写在每题的题号的前面..............1.(2010·四川雅安市高一检测)下列溶液中物质的量浓度为1 mol•L-1的是A.将40 g NaOH固体溶解于1 L水中 B.将22.4 L氯化氢气体溶于水配成1 L溶液C.将1 L 10 mol•L-1浓盐酸与9 L水混合 D.10 g NaOH溶解在水中配成250 mL溶液2.下列溶液中,物质的量浓度最大的是A.1 L H2SO4溶液中含98 g H2SO4B.0.5 L含49 g H2SO4的溶液C.98 g H2SO4溶于水配成2 L溶液 D.0.1 L含24.5 g H2SO4的溶液3.(2010·无锡高一检测)用胆矾配制1 L 0.1 mol•L-1的CuSO4溶液,正确的做法是A.将胆矾加热除去结晶水后,称取16 g溶于1 L水B.称取胆矾25 g溶于1 L水中C.将25 g胆矾溶于少量水,然后将溶液稀释到1 LD.将16 g胆矾溶于少量水,然后将此溶液稀释至1 L4.将5 mol•L-1盐酸10 mL稀释到200 mL,再取出5 mL,这5 mL溶液的物质的量浓度是A.0.05 mol•L-1 B.0.25 mol•L-1 C.0.1 mol•L-1 D.0.5 mol•L-15.300 mL 0.2 mol•L-1 KCl溶液与100 mL 0.3 mol•L-1 AlCl3溶液中Cl-物质的量浓度之比是A.1∶3 B.2∶3 C.2∶1 D.2∶96.下列配制的溶液浓度偏高的是A.配制盐酸用量筒量取盐酸时俯视刻度线B.配制盐酸定容时,仰视容量瓶刻度线C.称量4 g NaOH配制0.1 mol•L-1 NaOH溶液1000 mL时,砝码错放左盘D.NaOH溶解后未经冷却即注入容量瓶至刻度线7.(2010·昆明高一检测)关于0.1 mol•L-1 H2SO4溶液的叙述错误的是A.1 L该溶液中含有H2SO4的质量为9.8 gB.0.5 L该溶液中氢离子的物质的量浓度为0.2 mol•L-1C.从1 L该溶液中取出100 mL,则取出溶液中H2SO4的物质的量浓度为0.01 mol•L-1D.取该溶液10 mL,加水稀释至100 mL后H2SO4的物质的量浓度为0.01 mol•L-18.下列溶液中的Cl-浓度与50 mL 1 mol•L-1的AlCl3溶液中Cl-的浓度相等的是A.150 mL 1 mol•L-1的NaClB.75 mL 2 mol•L-1的NH4ClC.150 mL 3 mol•L-1的KClD.75 mL 1.5 mol•L-1的CaCl29.取100mL0.3mol•L-1和300mL0.25mol•L-1的硫酸溶液,混合后稀释到500 mL,则得到的混合溶液中H+离子的物质的量浓度为A. 0.21mol•L-1B. 0.56mol•L-1C. 0.42mol•L-1D. 0.26mol•L-1 10.一定量的质量分数为14%的氢氧化钾溶液,若将其蒸发掉50 g水后,其溶质质量分数恰好扩大一倍,体积变为62.5 mL,则浓缩后溶液的物质的量浓度为A.2.2 mol•L-1 B.4 mol•L-1 C.5 mol•L-1D.6.25 mol•L-1二、非选择题(本题包括5小题,共50分)11.(8分)1 L K2SO4和MgSO4的混合溶液中,含Mg2+ 2.4 g,SO2-4的物质的量浓度为:1 mol•L-1,则MgSO4和K2SO4的物质的量浓度分别是________、________.12.(16分)根据下列各题中所给出的数据,可分别求出其“溶质的质量分数”或“溶液的物质的量浓度”,试判断并求解.(1)已知某氢氧化钠溶液V L中含有n个氢氧根离子,可求出此溶液的________是________.(2)已知某氢氧化钠溶液中Na+与H2O的个数之比为1∶a,则可求出此溶液的__ ___为___ __.13.(8分)常温下,10.0 mL 1.0 mol•L-1的H2SO4(aq),加水稀释到500 mL,所得H2SO4(aq)的浓度为________mol•L-1;蒸发浓缩,使溶液的体积为2.40 mL,所得H2SO4(aq)的浓度为________mol•L-1.14.(18分)实验室欲用NaOH固体配制1.0 mol·L-1的NaOH溶液240 mL:(1)配制溶液时,一般可以分为以下几个步骤:①称量②计算③溶解④倒转摇匀⑤转移⑥洗涤⑦定容⑧冷却确其正确的操作顺序为______ __________.本实验必须用到的仪器有天平、药匙、玻璃棒、烧杯、胶头滴管、还有____ ____.(2)某同学欲称量一定量的NaOH固体,他先用托盘天平称量烧杯的质量,天平平衡后的状态如图.烧杯的实际质量为____________ g,要完成本实验该同学应称出____________ g NaOH.(3)使用容量瓶前必须进行的一步操作是________.(4)在配制过程中,其他操作都是正确的,下列操作会引起浓度偏高的是________.①没有洗涤烧杯和玻璃棒②转移溶液时不慎有少量洒到容量瓶外面③容量瓶不干燥,含有少量蒸馏水④定容时俯视刻度线⑤未冷却到室温就将溶液转移到容量瓶并定容⑥定容后塞上瓶塞反复摇匀,静置后,液面低于刻度线,再加水至刻度线参考答案:一、选择题(本题包括10小题,每小题5分,共50分)1. D 2.D 3.C 4.B 5.D 6.D 7.C 8.CD 9. C 10.B二、非选择题(本题包括5小题,共50分)11.0.1 mol•L-1;0.9 mol•L-1V (2) 溶质的质量分数;20/(20+9a)12. (1) 溶液的物质的量浓度;n/NA13.0.02mol•L-1;4.17mol•L-1.14.(1)②①③⑧⑤⑥⑦④;250ml容量瓶.(2)27.4g,10.0g 洞 (3)检漏(4) ④⑤。

双甸中学2014届高三上学期周练(五)数学试题

双甸中学2014届高三上学期周练(五)数学试题

双甸中学2014届高三数学周练五(2013-10-20)命题人:丁小红 审核人:薛卫明一、填空题(本大题共14小题,每小题5分,共70分,请将答案填写在答题卷相应的位置上)1.已知:集合A=}{230x x x -≤,B=[]}{22,2,1y y x x =-+∈-则A B = ▲ . 2.若lg2=a ,lg3=b,则log 418= ▲ . (用含,a b 的式子表示) 3.已知:cos ,2πθθπ⎛⎫=∈ ⎪⎝⎭则2cos sin 2sin θθθ-= ▲ . 4.若函数1,0()1(),03x x xf x x ⎧<⎪⎪=⎨⎪≥⎪⎩ 则不等式1|()|3f x ≥的解集为 ▲ .5.命题p: }{}{21,2,3∈,q: }{}{21,2,3⊆,则对复合命题的下述判断:①p 或q 为真;②p 或q 为假;③p 且q 为真;④p 且q 为假;⑤非p 为真;⑥非q 为假.其中判断正确的序号是 ▲ . 6.函数()2lg 64y x=-+的定义域为 ▲ .7.已知集合A=}{25x x -≤≤,B=}{121x m x m +≤≤-,若A B A = ,则实数m 的取值范围是 ▲ .8.已知幂函数()22279919m m y m m x--=-+的图象不过原点,则实数m 的值为_ ▲ .9.设()f x 是定义在()1,1-上的偶函数,在()0,1上单调递增,若()()224f a f a ---<0则a 的取值范围为 ▲ .10.已知函数32()f x mx nx =+的图象在点(-1,2)处的切线恰好与直线3x+y=0平行,若()f x在区间[],1t t +上单调递减,则实数t 的取值范围为 ▲ . 11.计算︒+︒的值等于 ▲ .12.若()f x 是定义在R 上周期为2的周期函数,且()f x 是偶函数,当[0,1]x ∈时()21x f x =-,则5()()log g x f x x =-函数的零点个数为 ▲ .13.已知函数2ln )(x x a x f -=,若对区间(0,1)内任取两个不等的实数p ,q ,不等式1)1()1(>-+-+qp q f p f 恒成立,则实数a 的取值范围是 ▲ .14.给出定义:若1122m x m -<≤+(其中m 为整数),则m 叫做离实数x 最近的整数, 记作{}x ,即 {}x m =. 在此基础上给出下列关于函数|}{|)(x x x f -=的四个命题:①函数)(x f y =的定义域是R ,值域是[0,21]; ②函数)(x f y =的图像关于直线2kx =(k ∈Z)对称; ③函数)(x f y =是周期函数,最小正周期是1; ④ 函数()y f x =在⎥⎦⎤⎢⎣⎡-21,21上是增函数; 则其中真命题是__ ▲ .二.解答题:本大题共6个小题,共90分。

四年级语文第一学期周周练五

四年级语文第一学期周周练五

四年级语文第一学期周周练五(一)基础部分。

一、看拼音写词语qìshìxiōng xiōng mǐn jiépán xuán zhēng fēn duómiǎo( ) ( ) ( ) ( )nièzi lùxùchén sīcōng cōng fùqiāng( ) ( ) ( ) ( ) ( )二、多音字组词挨( ) ( ) ( ) ( ) 大( ) ( )( ) ( )三、选词填空激烈剧烈猛烈连续陆续继续1、台风()地刮着,路边的许多大树都被连根拔起。

2、经过( )的思想斗争,他终于说出了事实的真相。

3、腹部一阵阵( )的疼痛使他难以直起腰来。

4、电影放映结束了,人们( )离开影院。

5、王明一贯学习认真,他已经( )三年被评为“三好学生”。

6、大队部将在这学期( )开展“雏鹰争章”活动。

四、用正确的修改符号修改病句1.无论干部和群众,毫无例外,都必须遵守社会主义法制。

2、这届全运会会徽、吉祥物设计的应征者大多是以青年师生为主。

3、这个星期天的上午,太阳整整一天没有露脸。

4、我多么愿望饲养自己心爱的小动物呀!5、老师主持我们参加国庆游园活动。

(二)阅读部分。

(二)楼道真情吊在脖子上的钥匙给弄丢了,明明懊恼极了。

铁门上的锁眼一丝光亮也透不过。

连妈妈上班前留给明明的饭都没法看见。

太阳在赶路,树的影子也越来越短。

明明决心咬着牙熬过去。

他蹲在地上,打开书包,用铅笔在纸上画哆啦A 梦。

但是,尽管把哆啦A梦的头画成了钥匙,饥饿仍在肚子里翻筋斗。

明明感到难过,他真想哭。

明明毕竟是小学高年级学生了。

他开始恨起门来,为什么门要上锁?有人上楼了,那是四楼的薛医生。

薛医生给明明打过针,一点儿也不疼的。

一会儿,蓝色上衣一闪,那是六楼的张阿姨。

她爬楼快极了。

接着,明明看见一楼的王爷爷,爷爷照例吃完午饭要爬三楼,他要和会钓鱼的老书画家下棋,得胜回朝,下楼时袖子扬得很高。

物理周周练五

物理周周练五

黄中分校物理周周练五一、本题共10小题,每小题4分,共40分。

在每小题给出的四个选项中有的小题只有一个选项正确,有的小题有多个选项正确,全部选对的得4分,选不全的得2分,有选错或不答的得0分。

1、骑自行车刹车时,车很快停住,这是因为:A 、刹车时,闸皮与车圈抱紧,车轮不能转动了,因而车不能前进了B 、刹车时,由于自行车失去了动力,因而它很快停住了C 、刹车时,闸皮与车圈抱紧,闸皮给车轮很大的摩擦阻力,因而车很快停住了D 、刹车时,闸皮与车圈抱紧,车轮在地面上由滚动变为滑动,地面给车轮很大的摩擦阻力,因而车很快停住了2.将一物体以初速度0v 竖直上抛,若物体所受空气阻力恒定不变,设小物体在到达最高点的前一秒钟和离开最高点后的第一秒钟内,通过的位移大小分别为S 1和S 2,速度的变化量大小分别为1v ∆ 和2v ∆,则 ( )A .21S S 〉 , 21v v ∆〈∆B .21S S 〈 , 21v v ∆〈∆C .21S S 〉 , 21v v ∆〉∆D .21S S 〈 , 21v v ∆〉∆3.在均匀的细软表链放在光滑水平桌面上,当它的一端稍露出桌面边缘垂直时,如图所示, 整个表链的运动是 ( )A .保持静止B .匀速下降C .匀加速下降D .变加速下降4.如图所示,物体A 和B 的质量均为M ,由一根轻绳相连跨过定滑轮。

现用力拉B ,使它沿水平面从图示位置向右作匀速直线运动,则此过程中, 绳子对A 的拉力:( )A .大于mg B .等于mgC .小于mgD .由大于mg 逐渐变为小于mg5、如图所示,在光滑水平面上,一个斜面体被两个固定在地面上的小桩a 和b 挡住,然后在斜面上放一物体,下列说法正确的是:A 、若物体加速下滑,则b 受挤压B 、若物体减速下滑,则b 受挤压C 、若物体匀速下滑,则a 受挤压D 、若物体静止在斜面上,则a 受挤压6.某消防队员从一平台上跳下,下落2m 后双脚触地,接着他用双脚弯曲的方法缓冲,使自身重心又下降了0.5m ,则在着地的过程中地面对他的双脚的平均作用力估计为( ) A.自身所受重力的2倍 B.自身所受重力的10倍 C.自身所受重力的8倍 D.自身所受重力的5倍7.一物块以150J的初动能由地面沿一个很长的斜面往上滑行,当它到达最高点时,重力势能等于120J。

河北省高阳中学2013-2014学年高二上学期第五次周练 历史试题

河北省高阳中学2013-2014学年高二上学期第五次周练 历史试题

高二历史周练五1.李贽著有《焚书》《藏书》等多种著作。

《焚书》的起名是他认为将来这些著作定会遭到焚毁。

《藏书》的命名则是由于他这部书“颠倒千万世之是非”,见解“与世不相入”,只能“藏之后世”。

李贽通过这些著作( )A.大胆地向正统思想发出挑战B.大力宣扬道学思想C.大力宣扬程朱理学观点D.对佛家学说提出质疑2.在明清的反封建思想中,反封建的矛头首先指向程朱理学,这是因为程朱理学( ) A.维护封建伦理道德,摧残人性B.破坏传统文化C.反对任何意义上的社会进步D.不适合时代的发展4. 2011年是王夫之诞辰392周年。

与黄宗羲、顾炎武相比,下列各项中能体现王夫之思想特点的是( )A.“颠倒千万世之是非”B.“天下为主,君为客”C.“经世致用”D.“天地之化日新”5.明清时期产生了一批具有民主思想的进步思想家,他们的思想反映了一定的时代要求,这个“时代”指 ( )①资本主义萌芽时代②封建制度衰落时代③资本主义形成发展时代④封建制度高度发展时代A.①④ B.③④C.①② D.②③6.《焚书·答耿中丞》说:“夫天生一人自有一人之用,待取给于孔子而后足也。

若必待取足于孔子,则千古以前无孔子,终不得为人乎?故为愿学孔子之说者,乃孟子自所以止于孟子,仆方痛撼其非夫,而公谓我愿之欤?”李贽此话的含义主要是 ( ) A.批判摧残人性的孔子思想B.肯定人皆有独立思考的权利C.揭露道学家们的虚假面目D.主张亲身实践并学以致用7.“民贵君轻”思想以及“天下为主,君为客”思想反映了中国古代传统的 ( ) A.民主思想B.儒家“仁政”思想C.民本思想D.人民主权思想8.明清之际著名思想家顾炎武在《日知录》中写道:“保国者,其君其臣,肉食/者谋之;保天下者,匹夫之贱,与有责焉。

”这一思想的深远影响在于( )A.动摇了宋明理学的统治地位B.激发了中华民族的社会责任感C.促进了资本主义萌芽的发展D.推动了民主革命思想的形成9.王夫之坚持以儒家六经为自己的治学原则,但又不盲从,别开生面。

山东省新泰二中高二英语 周练试题(5) 新人教版

山东省新泰二中高二英语 周练试题(5) 新人教版

周练五Ⅰ.单项填空1. She had a computer at home, and her parents desired that she _____ all her work at home.A. do B. does C. must do D. would do2.No child under 12 is allowed to go to the lake alone;any walk close to the lake ________by a parent.A.must be accompanied B.must accompanyC.can be accompanied D.should accompany3.The film star has asked ______but the journalists just keep following him wherever he goes.A.to leave alone B.left aloneC.to be left alone D.being left alone4.—What did he say in ________of his stupid behaviour?—He admitted that he had made a serious mistake.A.explanation B.favour C.fear D.support5.The novel written by the author________ well,but five years ago no one could have imagined how great a role he ________in the literary world.A.sells;was to play B.selling;was playingC.sold;had played D.sell;is playing6.The result of the football match was 2 to 2,______the satisfaction of both teams. A.with B.for C.at D.to7.The Parkers bought a new house but ____will need a lot of work before they can move in.A.they B.itC.one D.which8.We did everything we could________ him to stay,but he insisted on leaving. A.try to persuade B.to try to persuadeC.try persuading D.to be persuaded9.I am going to Shanghai. Do you have anything _____ to your parents?A. to takeB. takenC. takingD. to be taken 10—Lorryhow do you think an Englishwoman will feel if you ask how old she is? —Well.She may probably feel________.A.absurd B.embarrassedC.satisfied D.awful11.The accident happened on such an evening with strong winds________by heavy rain.A.appeared B.happenedC.accompanied D.mixed12.—It’s a lovely day,isn’t it?—Yes.I love_____when the weather is like t his.Why don’t we sit outside and have our lunch?A.this B.thatC.it D.one13. Many people stood near the bus stop, nervously waiting _____.A. to pick upB. picking upC. to be picked upD. being picked up14. Don't leave matches or cigarettes on the table with in the _____of littlechildren.A. hand B. reach C. space D. distance15. Not until all the fish died in the river, _____ how serious the pollution was.A. did the villagers realizeB. the villagers realizedC. the villagers did realizeD. didn't the villagers realize16. At least 100 people lost their lives in the fire, _____ 7 children.A. containedB. includedC. includingD. except17. —_____ David and Vicky_____ married? —For about 3 years.A. How long were; beingB. How long have;gotC. How long have; beenD. How long did; getII. 阅读理解AWhat are you going to do if you are in a burning house? How will you escape? Do you know how to save yourself? Please read the following passage.Escaping a fire is a serious matter. Knowing what to do during a fire can s ave you life. It is important to know the ways you can use and show them to eve ryone in the family, such as stairways and fire escapes, but not lifts.From the lower floors of the buildings, escaping through windows is possibl e, learn the best way of leaving by windows with the least chance of serious in jury.The second floor window is usually not very high from the ground. An averag e(平均高度的) person, hanging by the finger-tips will have a drop of about six feet to the ground. It is about the height of an average man. Of course, it is safer to jump a short way than to stay in a burning building.Windows are also useful when you are waiting for help. Be sure to keep the door closed. Or smoke and fire may be drawn into the room. Keep your head low a t the window to be sure you get fresh air rather than smoke that may leaked(渗) into the room.On a second or third floor, the best windows for escape are those that open onto a roof. From the roof a person can drop to the ground more safely. Droppi ng onto cement(水泥) might end in injury. Bushes(灌木丛) and grass can help to break a fall.1. It is important to _______.A. put out the fire in the burning houseB. know the ways to escape the fireC. jump off a burning houseD. keep the door closed2. It is possible to escape through the windows _______.A. if there are some bushes on the groundB. if you are strong enoughC. if you live on a lower floorD. If you have a long rope3. Which of the following escaping way is NOT right? _______.A. You can escape though stairways.B. You can choose fire escapes.C. Escape from the windows that open onto a roof.D. Use a lift to come down at once.4. Open the window so that _______ if the building is on fire.A. you can get fresh airB. you can call for helpC. you can easily jump offD. you can be seen first5. The best title of the passage is _______.A. Escaping from the WindowsB. Save Yourself in the Burning HouseC. Knowledge on FireD. Waiting for HelpB“Well, we’re in our new house. Let’s get a new pet to get along with it,〞 Mrs Brown said to her husband.“That sounds like a pretty good idea,〞he answered. “Do you want to see the ads in the newspaper?〞“Let’s go to the animal shelter. Many pets there need homes. Since tomorr ow is Saturday, we can both go,〞 she said.Next morning the Browns met Mr Snow at the animal shelter. “We want to be sure that the pets here go to good homes,〞Mr Snow said, “So I need to ask yo u some questions.〞After they talked for a while, the Browns decided to get a small dog. It wo uldn’t need a big house or a big yard. A small dog would bark(吠) and warm the m if someone tried to break into their house. After Mr Snow gave the Browns a b ook on pet care, they chose one and wanted to take her home right away. But the animal doctor hadn’t checked her yet. So Mr Snow told them to return on Sunda y.On Sunday afternoon the Browns went to the animal shelter. The animal docto r said, “Shadow has had all of her shots(预防针). She will be healthy.〞 The b rowns thanked the doctor and took Shadow home.1. From the reading we learn that _______.A. the Browns have never had a pet before.B. the Browns knew about Shadow from the newspaper.C. Shadow is a small and healthy dog.D.Mr Brown didn’t quite agree with his wife.2. The word shelter in the reading means _______.A. a place to sell small dogsB. a place to keep homeless animalsC. a place to study animalsD. a place to sell books on pet care3. Mr Snow asked the Browns some questions to _______.A. see if they had moved to a new houseB. find out how rich the Browns we reC.know where they’d keep their new pet sD. make sure they’d take care of pets4. The Browns thinks that a small dog _______.A.doesn’t need any room to keepB. can help them watch their houseC. eats less food than a bigger oneD. usually has a beautiful name5.It’s clear that _______.A. Shadow will not be easy to get illB. the Browns were not satisfied with ShadowC.Mr Snow didn’t check Sh adow at allD. Shadow likes barking a lotIII.阅读表达Dear Sir,I have to travel every day from So UK Road to the Airport. Two buses travel along this route: No.49 and No.16. However, by the time No.16 reaches So UK Road, it is always full, so it is of no use for me. This leaves No.49 which sometimes has _______ seats on it.The timetable states that there are buses from So UK Road to the Airport every ten minutes. If this is so, why do I have to wait half an hour for a bus nearly every day?The instructions state that if there are empty seats on a bus, the bus must stop at every stop where people are waiting. Why is it that half-empty buses go straight past me when I am standing at the bus stop?The instructions state that no bus may carry more than 40 seated passengers and 20 standing passengers. Yesterday, I was first to get off the bus when it reached the Airport, I counted the other passengers as they got off. There were 129 of them.Clearly printed on the back of every bus is a sign that says “Maximum spe ed:50 m. p. h.〞 The distance from So UK Road to the Airport is 10 miles. Saturday morninga 49 bus traveled the distance in ten minutes, at an average speed of 60 m. p. h. At times it must have done at least 80 or even 90 m. p. h.It is obvious that our bus companies have neither respect for the instructions nor consideration for their passengers. Can nothing be done about this?1. What is the best title of the passage?_________________________________________________________________2. Which sentence in the passage can be replaced by the following one:The fact that the bus companies don’t obey the instructions and ignored the passengers is quite clear.____________________________________________________________________________ 3. Please fill in the blank with proper words to complete the sentence._____________________________________________________________4. What do you think the bus companies respond to the complaints?__________________________________________________________________5. Translate the underlined sentence in the passage into Chinese.____________________________________________________________________________答案解析Ⅰ.单项填空1.A2.A 考查情态动词的被动语态。

语文阅读周周练答案

语文阅读周周练答案

参考答案九年级上学期第一周星期一·记叙精练奶奶与父亲1.奶奶表面上对病危的父亲没有表现出过多的悲伤留恋,实质上是不想让她的儿子带着牵挂离去,表达了奶奶对父亲深藏不露的爱。

2.父亲去世后,奶奶的头发一夜变白;一个星期里奶奶一粒米都未曾下肚;“我”劝奶奶“想父亲就哭出来”,奶奶说“泪早已在心里流干了”。

3.用了对比手法。

儿子落水,不会游泳的母亲下水施救;母亲落水,年轻力壮的儿子仅伸出扁担施救。

用意在于自然引出故事的主旨:母疼儿如长江水,儿孝母只扁担长。

4.现实中和故事中的母亲都很爱自己的儿子,但表现不同。

现实中的母亲对儿子的爱表现得更理性、更深沉;现实中的儿子对母亲的爱远远超过了故事中的儿子,在自己无力尽孝的情况下,让孙子承担起为奶奶尽孝的责任。

5.示例:①儿行千里母担忧;②养儿方知父母恩;③天地宽大,父母恩大;④谁言寸草心,报得三春晖。

星期二·古诗鉴赏(一)望江南1.“独”字点明她孤独的思妇身份,表现思妇孤寂痛苦的生活和心情。

2.诗人借景抒情、情景交融。

通过写斜阳的含情脉脉、水流的悠悠不断来表达思妇绵绵不断的离愁别绪,十分精妙。

(二)御街行秋日怀旧1.上阙主要通过视觉、听觉,抓住秋声和秋色来描写秋夜景象。

勾画出秋夜空旷的天宇、明净的月光,营造典型的相思氛围。

2.“寒”字用得极妙,既是秋寒节候的感受,又是孤寒寂寞处境的感受,兼写物境与心境。

星期三·散文品悟四月醉芳菲1.抒发了作者对春天的喜爱和赞美,对美好人生的向往和憧憬。

2.(1)指路边的迎春花的花儿与绿枝相映的情景。

(2)指心被深深陶醉。

3.(1)运用拟人(夸张)的手法,“一夜之间”“嫩绿”“诉说”等生动形象地写出了草坪的春意盎然和恬淡清新,表现了春天的美好和生动,表达了作者的陶醉之情。

(2)美丽的春天既使人陶醉又使人对未来充满希望和憧憬。

4.让浮躁的心情宁静饮醉爱情5.C星期四·说明解读明胶的那些“马甲”1.不能。

河北省高阳中学2013-2014学年高一物理上学期第五次周练试题新人教版

河北省高阳中学2013-2014学年高一物理上学期第五次周练试题新人教版

高一物理周练五一、选择题(在每小题给出的四个选项中,至少有一个选项是正确的)1.关于速度和加速度,下列说法中正确的是()A.加速度大的物体速度变化大B.加速度大的物体速度变化快C.加速度为零的物体速度也为零D.加速度不为零的物体速度必定越来越大2.下列哪种情况是可能出现的()A.物体的加速度增大时,速度反而减小B.物体的速度为零时,加速度却不为零C.物体的加速度不为零且始终不变,速度也始终不变D.物体的加速度大小和速度大小均保持恒定3.如图1所示,为甲、乙两物体相对于同一坐标的s-t图象,则下列说法正确的是()t0s0④甲的速率大于乙的速率A.①②③B.①④C.②③D.②③④4.做匀变速直线运动的物体,在某段时间Δt内通过的位移是Δs,则st∆∆表示()A.物体在Δt时间内的平均速度B.物体在Δt时间末的瞬时速度C.物体在Δt时间内速度的变化量D.物体在Δs这段位移中点的瞬时速度5.两物体都做匀变速直线运动,在给定的时间间隔t内()A.加速度大的,其位移一定大B.初速度大的,其位移一定大C.末速度大的,其位移一定大D.平均速度大的,其位移一定大6.一质点自原点开始在x轴上运动,初速度v0>0,加速度a>0,当a值减小时(a仍大于零)则质点的()A.速度不断减小,位移逐渐增大B.速度和位移都只能逐渐增大到某个定值C.速度增大,位移趋近于某个定值D.速度逐渐增大,位移也逐渐增大7.一物体的位移函数式是s=4t+2t2+5(m),那么它的初速度和加速度分别是()A.2m/s,0.4m/s2B.4m/s,2m/s2C.4m/s,4m/s2D.4m/s,1m/s28.从高度为125m的塔顶,先后落下a、b两球,自由释放这两个球的时间差为1s,则以下判断正确的是(g取10m/s2,不计空气阻力)()图1A .b 球下落高度为20m 时,a 球的速度大小为20m/sB .a 球接触地面瞬间,b 球离地高度为45mC .在a 球接触地面之前,两球的速度差恒定D .在a 球接触地面之前,两球离地的高度差恒定9.一只气球以10m/s 的速度匀速上升,某时刻在气球正下方距气球s 0=6m 处有一小石子以20m/s 的初速度竖直上抛,则下述正确的是(g 取10m/s 2,不计空气阻力) ( )A .石子能追上气球B .石子追不上气球C .若气球上升速度为9m/s ,其余条件不变,则石子在抛出后1s 末追上气球D .若气球上升速度为7m/s ,其余条件不变,则石子到达最高点时,恰追上气球 10.在做《探究小车速度随时间变化的规律》的实验中,利用打点计时器在纸带上打出了一系列的点,如图2所示。

辽宁省铁岭市高级中学2011高中生物届周周练5

辽宁省铁岭市高级中学2011高中生物届周周练5

周周练五从杂交育种到基因工程命题人邵双1、人的黑发对金发为显性,一对夫妇全为杂合体黑发,他们两个孩子中,一个为黑发,另一个为金发的概率为A、3/16B、9/16C、6/16D、1/162、将高茎豌豆(DD)与矮茎豌豆(dd)杂交所得的全部种子播种,待长出的植株开花时,有的进行同株异花传粉,有的进行异株异化传粉,有的让其自花传粉,三种传粉方式所结的种子混合播种,所长出的植株的表现情况将是A、全部是高茎B、高茎:矮茎 = 3:1C、以上A、B都可能D、不能判断(无一定比例)3、一旦禽流感病毒与人类病毒重组,从理论上讲,就有可能在人与人之间传播该疾病。

届时,这种病毒就会成为人类病毒。

这里所说的重组与下列哪项本质相同A.基因工程B.太空育种C.单倍体育种D.多倍体育种4、一个正常女子和一个患病的男子结婚,生了一个正常的女孩和一个正常的男孩,子女长大后分别与正常人结婚,所生子女都不会患此遗传病。

该遗传病最可能属于A.常染色体上的显性遗传B.性染色体上的显性遗传C.常染色体上的隐性遗传D.性染色体上的隐性遗传5、下列有关基因突变的叙述正确的是A、基因突变使一个基因变成它的等位基因B、基因突变产生新的基因,并且引起表现型改变C、体细胞发生的基因突变,不能传递给后代D、基因突变大多有害,其余的则对生物的生存有利6.镰刀型细胞贫血症患者,发病时其红细胞会变成弯曲的镰刀状,这种性状的具体体现者是A.红细胞膜上的双层磷脂分子 B.红细胞中的血红蛋白分子C.控制合成血红蛋白的DNA片断 D.控制合成血红蛋白的RNA模板7.可获得无子西瓜、青霉素高产菌株、矮秆抗病小麦的方法分别是 ( )①诱变育种②杂交育种③单倍体育种④多倍体育种A.①②④ B.④①② C.②①③ D.④①③8.下列与变异有关的叙述,正确的是()A.三倍体西瓜不能形成正常的配子,是因为秋水仙素抑制纺锤体的形成B.子代的性状分离是基因突变的结果C.用二倍体植物的花药离体培养,能得到叶片和果实较小的单倍体植物D.诱变育种和杂交育种均可形成新的基因型9.下列高科技成果中,根据基因重组原理进行的是()①利用杂交技术培育出超级水稻②通过返回式卫星搭载种子培育出太空椒③通过体细胞克隆技术培养出克隆牛④将苏云金杆菌的某些基因移植到棉花体内,培育出抗虫棉⑤将健康人的正常基因植入病人体内治疗基因病⑥用一定浓度的生长素处理,获得无子番茄A.①③⑤B.①②④C.①④⑤D.①②⑥10双子叶植物大麻(2N=20)为雌雄异株,性别决定为XY型,若将其花药离体培养,再将幼苗用秋水仙素处理,所得植株的染色体组成应是()A.18+XX或18+YYB.18+YYC.9+X或9+YD.18+XY11用纯种的高秆(D)抗锈病(T)小麦与矮秆(d)易染锈病(t)小麦培育矮秆抗锈病小麦新品种的方法如下,下列有关此育种方法的叙述中,正确的是()高秆抗锈病×矮秆易染锈病①,F1②,雄配子③,幼苗④,选出符合生产要求的品种A.过程①的作用原理为染色体变异B.过程③必须经过受精作用C.过程④必须使用生长素处理幼苗D.此育种方法可选出符合生产要求的品种占1/4 12下列各生物形成原理的解释,正确的是()A.无子番茄的获得是利用了多倍体育种的原理B.培育无子西瓜是利用了单倍体育种的原理C.培育青霉素高产菌株是利用了基因突变的原理D.“多利羊”的获得是利用了杂交育种的原理13用基因工程技术可使大肠杆菌合成人的蛋白质,下列叙述不.正确的是()A.常用相同的限制性核酸内切酶处理目的基因和质粒B.DNA连接酶和RNA聚合酶是构建重组质粒必需的工具酶C.可用含抗生素的培养基检测大肠杆菌中是否导入了重组质粒D.导入大肠杆菌的目的基因不一定成功表达14..右图是某家族黑尿症的系谱图。

全优考王周周练五年级

全优考王周周练五年级

全优考王周周练五年级语文:一、基础知识1. 读拼音写词语。

biān pào ɡuāi qiǎo piězuǐwán qiánɡjīxiè2.比较字形、字音组词语。

瀑() 镇() 腊() 虑()爆() 填() 蜡() 滤()胖() 绣() 挣() 肢()绊() 锈() 筝() 织()3.在括号里填入合适的词。

( )的笑容( ) 的生活( )的火光( )地涌向河岸悄悄地() 得意地()4、按查字典的要求填空。

(1)“身强力壮”的“强”字用音序查字法应先查音序,再查音节。

“强”的解释有:①力量大(跟‘弱’相对)。

②感情或意志所要求达到的程度高。

③使用强力;强迫。

④使强大或强壮。

在“身强力壮”这个词语中应选第解释;在“强身之道”这个词语中应选第种解释。

(2)“出其不意”的“意”用部首查字法应先查部首再查画。

“意”的解释有:①意思。

②心愿;愿望。

③意料;料想。

在“出其不意”这个词语中应取第解释。

在“词不达意”这个词语中应取第解释5、从下列词语中选择3个各造一个句子。

专心致志无缘无故震耳欲聋张灯结彩恍然大悟闻所未闻造句:(1)造句:(2)造句:(3)二、积累与拓展1、先把下列词语补充完整,再写出自己积累到的3个成语。

语心长美不收天海角司见惯精益精成语:2、默写古诗《石灰吟》。

3、学习了《为人民服务》你一定了解了文中不少相关的知识,请完成下列练习。

在《为人民服务》一文中写道:“中国古时候有个文学家叫做司马迁地说过:人固有一死,或重于泰山,或轻于鸿毛。

”司马迁用了二十余年时间写出了我国第一部纪传体通史诗:“人固有一死,或重于泰山,或轻于鸿毛。

”的意思是:三、综合性学习在《难忘小学生活》的综合性学习中,你一定有很多收获,请完成下列练习。

1、请把自己对某位老师、某位同学的毕业赠言写在下面的横线上。

对老师的赠言:对同学的赠言:2、本次综合性学习使我懂得了四、阅读能力(一)阅读下面的短文,借助注释,完成练习。

小学语文三年级能力培养与测试快乐周练五

小学语文三年级能力培养与测试快乐周练五

小学语文三年级能力培养与测试快乐周练五一、根据语境写词语。

(10分)1、农忙季节又到了,大街上看不到人们在xián ɡuànɡ(),只有在农田里才看到他们ɡēnɡ yún()的身影。

2、园子里种了一棵yīng táo()树,我们常常用chú tou ()除草,拿着shuǐ piáo()给它浇水,施肥。

终于,果子成熟了,一个个yuánɡǔnɡǔn()的樱桃挂在树上,我们心里乐开了花。

3、春天到了,爷爷把我家院子后面的空地上的杂草bádiào (),用来种菜。

我用脚把那下了种的土窝一个一个地溜平,还东一脚西一脚地xiānào()。

几天后,爷爷种的菜发芽了,我和爷爷一起chǎn dì(),我往往把菜苗当做野菜个(ɡē diào),把野菜留着。

二、判断下列加点字读音的对错,正确的在括号里打“√”,错误的在括号里改正过来。

(8分)浩渺miǎo()万顷qīnɡ()耄耋zhì ()旖旎nǐ()葬zhànɡ身()瑞ruì士()无垠yín()玷zhàn污 ( )三、选择题。

(10分)1、下列选项中画线字读音完全正确的一项是()。

A、拴(shuān)着樱(yīn)桃B、河蚌(fēnɡ)逛(ɡuànɡ)街C、倭瓜(wō)葬(zànɡ)身D、萌(mēnɡ)动菜种(zhǒnɡ)2、下列对《祖父的园子》中句子理解有误的一项是()。

A、“因为我太小,拿不到锄头杆,祖父就把锄头杆拔下来。

”这一句说明祖父对“我”很疼爱。

B、“(我)往往把谷穗当作野草割掉,把狗尾巴草当作谷穗留着。

”这句话说明“我”做错了以后,祖父没有骂“我”,反而笑,对“我”很宽容。

C、“祖父把我叫过去,慢慢讲给我听,说谷子是有芒针的,狗尾草却没有,只是毛嘟嘟的,很像狗尾巴。

总结我喜欢的动物小白兔150字

总结我喜欢的动物小白兔150字

泰兴市第二高级中学高二周练五语文试题整理表姓名:职业工种:申请级别:受理机构:填报日期:A4打印/ 修订/ 内容可编辑泰兴市第二高级中学高二周练(五)语文试题(满分160分,时间150分钟)一、语言文字运用(15分)1.依次填入下列句中横线处的词语,最恰当的一组是(3分)①才能和思想是一个人的立身之本,像石缝里的一棵小树,被扭曲,挤压,成不了旗杆,却也可成一条遒劲的龙头拐杖,别是一种价值。

②经过了两年,菅芒花有如预约,又与我们来人间会面,可是同看菅芒花的人,因为因缘的变迁离散,早就了。

③对唐诗和宋诗的评价,往往因个人爱好的不同而大相径庭,其实两个朝代的诗歌,不应该用一种固化的标准评价。

A.即使物是人非平分秋色 B.虽然面目全非平分秋色C.即使物是人非各有千秋 D.虽然面目全非各有千秋2.下列句子中,没有语病的一项是(3分)A.为保障泰州市“515”人才引进三年行动计划,今年领军人才申报工作由每年一批增加到两批,申报截止时间分别为6月30日和10月31日。

B.6月11日早晨,武警盐城边防支队成功救助了一只国家二级保护动物——“斑海豹”,小海豹由于鳍部受伤,被送到大丰港“海洋世界”接受治疗。

C.泰州市民顾成森将一枚指甲大的弹片送交新四军纪念馆并收藏到了展区,这枚弹片曾留在他父亲顾宝才体内多年,直至老人去世才取出。

D.近年来随着经济发展,泰州市市民的消费观念、消费水平和消费方式都有了明显的提高和转变,从事商业工作的人们不应漠视这些变化。

3.下列句子中,所用修辞手法与其他几项不同的一项是(3分)A.天空老张着那灰色的幔,没有一点点漏洞。

午后三点钟光景,忽然天空那灰色的幔裂了一条缝!(茅盾《雷雨前》)B.整个灶头几乎没有直线,那么多即兴式的弧线使灶头既端庄又秀气,像一位穿着蓝印花布衣服的农家少妇。

(金曾豪《家里的灶头》)C.只要你自己心灵上不长疮瘢,眼不盲,耳不塞,这无形迹的最高等教育便永远是你的名分。

(徐志摩《山居闲话》)D.冬天,有多少人放下一年的事情,像我一样用自己冰冷的手,从头到尾地抚摸自己的一生。

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周练五
1.计算:
(1)(-x 2+3y 2)2 (2)(-a 2-2b )2 (3)(1+a+b )2
(4)(-2x-y )(2x-y ) (5)(x+2)2(x-2)2. (6)(2x-y-1)(2x+y-1)
(7)(9)(9)x y x y -++- (8)(x+3)(x-3)(x 2-9)
(9)2()(2)(2)x y y x y x --+-
(10)10032 (11)71
91088⨯
(12)20122-2011×2013.
(13)2481632(21)(21)(21)(21)(21)2+++++-
2.求值
(1)已知x+y=5,xy=1,求①x 2+y 2;②(x-y )2.
(2)已知(a+b)2=7,(a-b)2=4,求a2+b2和ab的值.
(3)已知
1
2
x
x
+=,求2
2
1
x
x
+,4
4
1
x
x
+的值.
(4)已知a2-3a-1=0.求
1
a
a
-、2
1
()
a
a
+、2
2
1
a
a
+的值.
(5)已知
2
7
1
x
x x =
-+,求
2
421
x
x x
++
的值.
3、已知a-b=2,b-c=3,求a2+b2+c2-ab-bc-ca的值.
4、若
20112012
,
20122013
a b
==,试不用将分数化小数的方法比较a、b的大小.
5、如果(2x-M)2=4x2-12xy+N,求M、N的值.
6、观察下列各式:
(x-1)(x+1)=x2-1
(x-1)(x2+x+1)=x3-1
(x-1)(x3+x2+x+1)=x4-1
(x-1)(x4+x3+x2+x+1)=x5-1
①你能否由此归纳出一般性规律:
(x-1)(x n-1+x n-2+x n-3+…+x2+x+1)= ;
②根据①求出:1+2+22+…+262+263的结果.
7、观察下列算式:32-12=8=8×1,52-32=16=8×2,72-52=24=8×3,92-72=32=8×4,…(1)仿照以上的等式,请另外再写出一个等式;
(2)试用代数式来表述你发现这些算式的规律;
(3)说明你发现的规律的正确性.
8、探究应用
(1)计算:①(a-2)(a2+2a+4)②(2x-y)(4x2+2xy+y2);
(2)上面的整式乘法计算结果很简洁,你能发现一个新的乘法公式:
(请用含a.b的字母表示);
(3)下列各式能用你发现的乘法公式计算的是()
A、(a-3)(a2-3a+9)
B、(2m-n)(2m2+2mn+n2)
C、(4-x)(16+4x+x2)
D、(m-n)(m2+2mn+n2);
(4)直接用公式写出计算结果:
(3x-2y)(9x2+6xy+4y2)= .
(2m-3)(4m2+ +9)= .
分解因式
1、 用提公因式法分解因式
(1)a ab b a 61232-+- (2)()()233y x z y x ---
(3)()()m n b n m a ---93 (4)()3322+--a a
(5)()()m n b n m a ---93 (6)322231836y x y x y x --
(7)ab b a b a 264223-- (8)xy xy xy 126323-+-
(9)1++n n x
x (10)()()22a b b b a a ---
(11)()()111+--+-b b c b a (12)42212248++++-m m m m b a b a
(13)()()()()b a y x b a y x +-++-2332 (14)322231836y x y x y x --。

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