2010-2011第二学年测量试题
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2010-2011学年第2学期考试试题(B)卷课程名称《操作系统》任课教师签名出题教师签名审题教师签名考试方式(闭)卷适用专业计算机各专业考试时间(120 )分钟第一部分基础部分(共65分)一、单项选择题(每小题2分,共30分)1. 以下________项功能不是操作系统具备的主要功能。
A.内存管理B.中断处理C.文档编辑D.CPU调度2.特权指令________执行。
A.只能在目态下B.只能在管态下C.在目态或管态下均能D.在目态或管态下均不能3.进程的动态、并发等特征是利用________表现出来的。
A.程序B.数据C.程序和数据D.进程控制块4.若当前进程因时间片用完而让出处理机时,该进程应转变为________状态。
A.就绪B.等待C.运行D.完成5.实时系统中的进程调度,通常采用________算法。
A.响应比高者优先B.短作业优先C.时间片轮转D.抢占式的优先数高者优先6.一种既有利于短小作业又兼顾到长作业的作业调度算法是________。
A.先来先服务B.轮转C.最高响应比优先D.均衡调度7. 下列算法可用于磁盘移臂调度的是_________。
A.LRU算法B.电梯调度算法C.时间片轮转法D.响应比高者优先算法8、若系统中有五个并发进程涉及某个相同的变量A,则变量A的相关临界区是由_________临界区构成。
A.2个B.3个C.4个D.5个9.使进程从运行状态切换到等待状态所用的进程控制原语是_______。
A.阻塞原语B.唤醒原语C.创建原语D.撤消原语10.在操作系统中,对信号量S的P原语操作定义中,使进程进入相应等待队列的条件是_______。
A.S>0 B.S=0 C.S<0 D.S≤011.对磁盘进行移臂调度的目的是为了缩短_______时间。
A.寻找B.延迟C.传送D.启动12.逻辑文件存放在到存储介质上时,采用的组织形式是与_______有关的。
A.逻辑文件结构B.存储介质特性C.主存储器管理方式D.分配外设方式13. 在可变分区存储管理中,最优适应分配算法要求对空闲区表项按______进行排列。
广宁中学2009-2010学年生物必修2第二章《基因和染色体的关系》测试题班别:姓名:2010-4-1 一、单项选择题(每小题4分,共56分)1.进行有性生殖的高等动物的三个生理过程如图所示,则①、②、③分别为 A.有丝分裂、减数分裂、受精作用B.有丝分裂、受精作用、减数分裂C.受精作用、减数分裂、有丝分裂D.减数分裂、受精作用、有丝分裂2.如图所示是甲、乙两个分裂的细胞(正常生物体为二倍体),下列有关叙述中不正确的是()A.甲是减数分裂图像,乙是有丝分裂图像B.乙细胞所属动物的体细胞中有4条染色体C.甲细胞中,染色体、染色单体、DNA数目依次是2、4、4D.甲细胞的亲代细胞,其基因型一定是AaBb3.下列有关某生物体各细胞分裂示意图的叙述正确的是()A.图①处于减数第一次分裂的中期,细胞内有2对姐妹染色单体B.图②处于减数第二次分裂的后期,细胞内有2对姐妹染色单体C.图③处于减数第二次分裂的中期,该生物体细胞中染色体数目恒定为8条D.四幅图可排序为①③②④,出现在该生物体精子(或卵细胞的形成过程中4.在人的下列每个细胞中,含性染色体的数目最多的是()A.次级精母细胞分裂中期 B.白细胞 C.红细胞 D.卵细胞5.人类在正常情况下,精子形成过程中常染色体和性染色体数目和类型包含有()①44+XY ②44+XX ③22+Y ④22+X ⑤44+YY⑥88+XXXX ⑦88+XXYY ⑧88+YYYYA.①和③ B.③和④ C.①②③④ D.①②③④⑤6.水稻的体细胞中有24条染色体,在一般正常情况下,它的初级精母细胞、次级精母细胞和精子中染色体数目,DNA分子含量,分别依次是()A.24、12、12和24、12、12 B.24、24、12和24、12、12C.48、24、12和24、24、12 D.24、12、12和48、24、127.初级卵母细胞和次级卵母细胞在分裂时都会出现的现象是()A.同源染色体分离B.着丝点分裂C.细胞质不均等分裂D.染色体复制8.决定配子中染色体组合多样性的因素包括()A.染色体的复制和平均分配B.同源染色体的联会和非同源染色体的自由组合C.同源染色体的联会和互换D.非姐妹染色体的交叉互换和非同源染色体的自由组合9.有一对表现正常的夫妇,生了一个白化病的女儿。
2010 -2011 学年度第二学期高一级数学科期末考试试卷本试卷分选择题和非选择题两部分,共10页,满分为150分。
考试用时120分钟。
注意事项:1、答卷前,考生务必用黑色字迹的钢笔或签字笔将自己的姓名和学号填写在答题卡和答卷密封线内相应的位置上,用2B 铅笔将自己的学号填涂在答题卡上。
2、选择题每小题选出答案后,有2B 铅笔把答题卡上对应题目的答案标号涂黑;如需改动,用橡皮擦干净后,再选涂其他答案;不能答在试卷上。
3、非选择题必须用黑色字迹的钢笔或签字笔在答卷纸上作答,答案必须写在答卷纸各题目指定区域内的相应位置上,超出指定区域的答案无效;如需改动,先划掉原来的答案,然后再写上新的答案;不准使用铅笔和涂改液。
不按以上要求作答的答案无效。
4、考生必须保持答题卡的整洁和平整。
第一部分选择题(共50分)一.选择题(本大题共10小题. 每小题5分,共50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. sin(300)-的值是(* )A .;21B .;21-C .;23-D . ;23 2.已知(1,2),(2,1)a b x ==-,若b a ⊥,则=xA .2B .1C.21D.03.在直角坐标系中,若α与β的终边关于y 轴对称,则下列各式成立的是 A .sin sin αβ= B .cos cos αβ= C .tan α= tan β D .cot α= cot β4.在等差数列}{n a 中,1280a a +=,3460a a +=,那么=+65a a A.30 B.40 C.50 D.605.若a 、b 、c 为实数,则下列命题正确的是(* )A.若a >b ,则ac 2>bc 2B.若a <b <0,则a 2>ab >b 2C.若a <b <0,则a 1<b 1 D.若a <b <0,则a b >ba6.函数5cos(2)6y x π=+图象的一条对称轴方程是(* )A .;12x π=B .;6x π=C . 5;12x π=D .;3π=x 7.函数sin(2)3y x π=-的单调递减区间是(* )A .2,;63k k k Z ππππ⎡⎤++∈⎢⎥⎣⎦ B .5112,2;1212k k k Z ππππ⎡⎤++∈⎢⎥⎣⎦ C .22,2;63k k k Z ππππ⎡⎤++∈⎢⎥⎣⎦ D .511,;1212k k k Z ππππ⎡⎤++∈⎢⎥⎣⎦ 8.若a 、b 、c 成等比数列,则函数f (x )=ax 2+bx +c 的图象与x 轴的交点个数是(* ) A .2 B .1 C .0 D .不确定9.若y x ,满足条件⎪⎪⎩⎪⎪⎨⎧≥≥≤-+≤-+10042052y x y x y x目标函数y x z -=2,则A .25max =z B .1max -=z C . 2max =z D .0min =z 10.设集合y x y x y x A --=1,,|),{(是三角形的三边长},则A 所表示的平面区域(不含边界的阴影部分)是(* )A B C D第二部分非选择题(共100分)二.填空题(本大题共4小题,每小题5分,共20分.) 11.半径为a (0>a )的圆中,6π弧度圆心角所对的弧长是_____* ______,长为a 2的弧所对的圆周角为______* ______弧度。
2010 ~2011 学年度第 二 学期《 理论力学 》试卷(A 卷)一、填空题(每小题 4 分,共 28 分)1、如图1.1所示结构,已知力F ,AC =BC =AD =a ,则CD 杆所受的力F CD =( ),A 点约束反力F Ax =( )。
2、如图1.2 所示结构,,不计各构件自重,已知力偶矩M ,AC=CE=a ,A B ∥CD 。
则B 处的约束反力F B =( );CD 杆所受的力F CD =( )。
E 1.1 1.23、如图1.3所示,已知杆OA L ,以匀角速度ω绕O 轴转动,如以滑块A 为动点,动系建立在BC 杆上,当BO 铅垂、BC 杆处于水平位置时,滑块A 的相对速度v r =( );科氏加速度a C =( )。
4、平面机构在图1.4位置时, AB 杆水平而OA 杆铅直,轮B 在水平面上作纯滚动,已知速度v B ,OA 杆、AB 杆、轮B 的质量均为m 。
则杆AB 的动能T AB =( ),轮B 的动能T B =( )。
1.3 1.45、如图1.5所示均质杆AB 长为L ,质量为m,其A 端用铰链支承,B 端用细绳悬挂。
当B 端细绳突然剪断瞬时, 杆AB 的角加速度 =( ),当杆AB 转到与水平线成300角时,AB 杆的角速度的平方ω2=( )。
6、图1.6所示机构中,当曲柄OA 铅直向上时,BC 杆也铅直向上,且点B 和点O 在同一水平线上;已知OA=0.3m,BC=1m ,AB=1.2m,当曲柄OA具有角速度ω=10rad/s 时,则AB 杆的角速度ωAB =( )rad/s,BC 杆的角速度ωBC =( )rad/s 。
AB1.57、图1.7所示结构由平板1、平板2及CD 杆、EF 杆在C 、D 、E 、F 处铰接而成,在力偶M 的作用下,在图上画出固定铰支座A 、B 的约束反力F A 、F B 的作用线方位和箭头指向为( )(要求保留作图过程)。
1.7二、单项选择题(每小题 4 分,共28 分)1、如图2.1所示,四本相同的书,每本重均为P ,设书与书间的摩擦因数为0.1,书与手间的摩擦因数为0.25,欲将四本书一起抱起,则两侧手应加的压力至少大于( )。
第二学期七年级英语中考试题( A卷)出题范围:Units 1-6(时间:90分钟总分:100分)第一部分听力(10’)一:听第一段录音,写出出你所听到的动物序号A 老虎B 海豚C 考拉D 大象E 小狗F 长颈鹿G 熊猫1 ____________2 __________________3 ________________二:听录音选出正确答案4 Where is Sandra ?A:China B:France C:U.S.A. D:Canada5 What is Sandra doing ?A doing homeworkB playing basketballC having lunchD writing a letter6 How’s the weather in Shanghai ?A : cold B: hot and sunny C :snowing and windy D: hot and humid第二部分一、词汇:( 10’)1. She _____(总是)wears a T-shirt.2. The supermarket is on the ______(第五)Avenue.3. Koalas are from Australia. They eat l_________.4. John’s father works in a r_________. He is a cook.5. Look! My mum’s ______(躺)on the beach.6. If you are hungry you can buy something to eat in the s___________.7. He wants to go hiking when it’s ______(多云的).8. Is there a ______ (银行) near here?.9. Mary is talking o______ the phone.10.There are many a______ in the zoo. I like pandas best.二、用所给词的适当形式填空(5’)1.It’s a beautiful, ______ day. (sun)2. Mary enjoys _______football games very much. (watch)3. Thanks for _____me so much help. (give)4. Lin Tao wants ________an actor when he grows up. (be)5. Look! The children ______happily over there. (play)三、单项选择(15’)( )1.Everyone ______him, because he is friendly.A. likeB. likesC. to likeD. liking( ) 2. --- What __________ he do? --- He __________ an actor.A. is, isB. does, doesC. does, isD. is, does( ) 3. --- What time does she get up? --- She ___________ up at 6:10 am.A. is gettingB. getsC. to getD. get( ) 4. -----What language does the woman speak?---She speaks ________ . She' s from Australia.A. JapaneseB. ChineseC. FrenchD. English( ) 5.--- ________ Mary cleaning her room? --- No, she is ________ .A. Does, readsB. Can, readC. Is, readingD. Does, reading ( ) 6. __________ does your aunt work? -------In a restaurant.A. WhatB. HowC. WhereD. Which( ) 7.Where _______ your pen pals_______ ?A. are, fromB. do, fromC. do, comeD. is , from( ) 8. --- ________ it going? --- Great!A. What’sB. How’sC. Why isD. Where’s( ) 9. People are really __________ on the beach in summer (夏季).A. relaxedB. relaxingC. relaxD. to relax( ) 10.Who are you _____? ----- My mother.A. waitB. waitingC. waiting forD. wait for( ) 11.-Let’s go to see the action movies. ---_________.A. Yes, we doB. No, we don’tC. That sounds excitingD. No, thanks. ( ) 12.Tony is busy _____his homework.A. doingB. doC. to doD. does( ) 13. I like the ____ the story. It’s fun.A beginB begin ofC beginningD beginning of( ) 14. She likes ______ to the movies with her friends and _____sports.A. going, playingB. go, playC. going , playD. going , plays ( ) 15. Welcome to Disneyland! It’s a good place _____ fun .A .havingB to haveC haveD has四、句型转换(10’)1. How' s the weather today?_______ the weather_____ today?2. There is a supermarket across from the park. ( 改为一般问句)第1页共8页第2页共8页________ __________ a supermarket across from the park?3. She often plays soccer after school. (用now改写句子)She __________ ____________ soccer now.4.My mother is working in a restaurant.(划线部分提问)________ your mother __________?5. I like koalas because they are very friendly. (就划线部分提问)_______ do you ______ koalas?五、情景交际(10’)B: Hi, Judy. 1 I miss(想念) you very much.A: I’m in Canada. I’m studying here now.B: That’s great! 2A: Not bad. How about you?B: Pretty good. 3A: It’s cold and humid. It’s snowing outside.B: Snowing? Wow. Chongqing is sunny and hot. 4A: You’re right! 5B: I’m talking to my good friend, Kelly!A: Oh, I see. Thank you.1.______2.______3.______4.______5.______( B )根据句意补全对话,每空一词。
2010—2011学年度全市高二年级质量监测考试物理试题(二)参考答案及评分标准一.选择题:(每小题4分。
在每小题给出的四个选项中,至少有一个是正确的,全部选对得4分,选对而不全得2分)1 C;2 C ;3 BCD;4 D; 5C ; 6 D ; 7 C . 8 ABD ; 9 B ; 10 D ; 11A ; 12 BC; 13A ; 14 B二.填空题:(每空2分,共10分)15.4 cm; 16. 120 r/min ; 17。
24m/s ; 18。
b ; 19。
A;三、简答、计算题:(20题10分,21、22题各12分,共34分)20答案:(1)。
由t=0时摆球位置是负的最大值,故开始时刻摆球在B 处。
(2分)(2)。
摆球位移为零的时刻摆球具有速度的最大值,其中位移由正变零的各时刻的速度方向与正方向相反,是“负最大”,故速度首次达负最大的时刻是0.6s 。
(2分)位置恰在O 点。
(2分)(3)。
位移值最大的时刻,加速度值也最大。
当位移为正向最大时,加速度的方向与正方向相反,是“负最大”。
故加速度首次达到负最大值时刻t=0.4s 。
(2分)摆球位置在C 点。
(2分)21解析:依题意画出如图所示的示意图,且AO 长为L ,因60AO O '∠=,所以tan 30BC O O L L '===。
(2分) 因为s i n 30s i n n r = , 所以sin 301sin 2r n n == 。
(2分)sin tan cos h r CD h r r ==== 。
(4分)所以水底的影子长为BD DC BC =+=。
(4分) 22. (1)当波向左传时,实线波向左移动6厘米(1/4波长)而得到虚线波形,V 1=s/t=0.06/0.5 m /s =0.12m /s …(3分); 波的周期T 1= λ/t=0.24/0.12s=2s(3分)(2)当波向右传时,实线波向右移动18厘米(3/4波长)而得到虚线波形,V 2= s/t=0.18/0.50 m /s=36 m /s …(3分); 波的周期T 2=λ/t=0.24/0.36s= 0.67s…(3分)。
南京外国语学校2010—2011学年度第二学期期终初二年级英语试题(卷)命题人:朱海燕马春荣杨嘉易付翠审核人:连凯卷I 客观题(60分)I. Listening comprehension 10% (0.5 x20=10)Part AListen to the following dialogues and choose the right answers for the questions. You will hear each dialogue twice.1. A. Home. B. To the hospital. C. To school.2. A. It‟s her birthday. B. It‟s Mother‟s Day. C. His mother has no handbag.3. A. To a party. B. To France. C. To the museum.4. A. Planting trees. B. Visiting a park. C. Decorating a Christmas tree.5. A. Neighbors. B. Old classmates. C. Teacher and student.6. A. Monkeys. B. Dogs. C. Pandas, elephants and cats.7. A. $3. B. $33. C. $36.8. A. It‟s rainy. B. It‟s nice. C. It‟s cold.9. A. See a film. B. Have a meeting. C. Get ready for her talk.10. A. He reads books.B. It‟s easy to read a book in one morning.C. He can read a lot wh en he‟s interested.Part BListen to Dialogue 11 and choose the right answers for questions 11 to 13. You will hear the dialogue twice.11. What are they talking about?A.How to go to school.B.How to save the environment.C.How to recycle waste paper.12. How many ways did they talk about?A. Two.B. Three.C. Four.13. What‟s the last way?A.Saving money.B.Riding a bike.ing a bag instead of plastic bags.Part CListen to Dialogue 12 and choose the right answers for questions 14 to 17. You will hear the dialogue twice.14. Why does the girl feel nervous before going to Switzerland?A.Because she will go alone.B.Because she has never been abroad.C.Because she doesn‟t know what she is supposed to do.15. What does the girl know about Switzerland?A.It‟s famou s for watches.B.The people are friendly.C.The food is delicious.16. What should the girl do if she goes to a party there?A.Be later.B.Be earlier.C.Be on time.17. What should the girl do if she visits a friend?A.Call first.B.Take a present with her.C.Ask other friends to go with her.Part DListen to the passage. Choose A for the right statement and choose B for the wrong one. You will hear it twice.18. Clouds in the move around all the time but never join up.19. The thunderclouds are like small white balls of cotton.20. Clouds in the sky are different in shape, size and color.II. Multiple choices. 20% (1 x20=20)21.Wang Fei is such a wonderful singer and ______________ people came to her concert to enjoy her beautiful songs last month.A. several thousandB. several thousandsC. thousandsD. thousand of22. The you work, the you will be.A. hardly; more successfulB. harder; more successfulC. hardly; more successfullyD. harder; more successfully23. Which of the following sentences is NOT correct?A. My father would rather drink a cup of coffee than go to the movies on a rainy morning.B. I prefer reading books to going to the movies in my free time.C. Jason likes playing football better than playing computer games.D. She prefers listening to jazz music to play the piano.24. My money , so I can‟t afford another expensive house.A. has used upB. uses upC. has been used upD. was using up25. I called Jim last night but no one answered it. He .A. would fall asleepB. must have fallen asleepC. can be sleepingD. may be asleep26. money have been spent on the improvement of the school buildings.A. A large amount ofB. A great deal ofC. A lot ofD. Huge amounts of27. this room Michael? No, it‟s .A. Is; belonged to; Mike‟s and Jack‟sB. Does; belong to; Mike‟s and Jack‟sC. Is; belonging to; Mike and Jack‟sD. Does; belong to; Mike and Jack‟s28. you have had playing football together!A. What great funB. What a great funC. How funD. How funny29. After the elbow, you‟ll feel tingling pain the fingers.A. striking on; onB. being struck on; inC. striking on; inD. being struck on; on30. in Paris for over ten years, he was familiarevery sight there.A. Stayed; withB. Having stayed; toC. After having stayed; toD. Having stayed; with31. The boy, that he ha d made a big mistake, came to teachers‟ office to ask forforgiveness (原谅).A. has knownB. knowingC. knewD. that had known32. A strong wind is by a difference in pressure. The movement of air causes thewind .A. causing; blowingB. causing; to blowC. caused; to blowD. caused; blowing33. Can you tell me the way you solved this problem?Which of the following is NOT correct?A. in whichB. thatC. /D. where34. In the past, pigeons were tools sending messages.A. used as; forB. used for; forC. used as; toD. used in; as35. -- What the people when the earthquake ?-- Well, the children were at school and the adults were at work.A. were, doing, was happeningB. did, do, happenedC. did, do, was happeningD. were, doing, happened36. The hunter felt to find his little son had shot the wolf .A. amazed; dyingB. amazing; dieC. amazing; diedD. amazed; dead37. Which of the following statements is NOT correct according to our text?A. Warm air rises and creates areas of high pressure.B. The two kinds of elephants living in the world are African and Indian elephants.C. Sweat glands produce a mixture of water and waste chemicals.D. The funny bone has nothing to do with the humerus.38. Can you tell me the city ?A. which you enjoyed a visitB. where we enjoyed a visit toC. that you enjoyed visiting toD. which you enjoyed a visit to39. When you go shopping, please remember to buy a of lipstick,two of bread and a of cigarettes.A. bottle; packs; bagB. tube; loaves; packC. tube; bottles; packageD. bottle; books; set40. If you earlier, you the train yesterday morning.A. got up; would not missB. had got up; would not missC. got up; would not have missedD. had got up; would not have missedIII. Cloze test 15% (1x15=15)My son Joey was born with club feet. The doctors said that with treatment he would be able to walk, but would never run very well. The first three years of his life was ___41___ in hospital. By the time he was eight, you wouldn‟t know he ha d a problem when you saw him ___42___.Children in our neighborhood always ran around ___43___ their play, and Joey would jump and run and play, ___44___. We never told him that he probably wouldn‟t be ___45___ to run like the other children. So he didn‟t know.In ___46___ grade he decided to join the school running team. Every day he trained. He ran more than any of the others, ___47___ only the top seven runners would be chosen to run for the ___48___. We didn‟t tell him he probably would never make the team, so he didn‟t know.He ran four to five miles every day—even when he had a fever. I was ___49___, so I went to___50___ him after school and wanted to stop him. I found him running ___51___. I asked him how he felt. “Okay,” he said. He ha d two more miles to go. Yet he looked straight ahead and kept___52___.Two weeks later, the names of the team ___53___ were out. Joey was number six on the list. Joey had ___54___ the team. He was in seventh grade — the other six team members were all eighth graders. We never told him he couldn‟t do it … so he didn‟t know. He just ___55___ it.41. A. spent B. taken C. cost D. paid42. A. talk B. sit C. study D. walk43. A. after B. before C. during D. till44. A. either B. too C. though D. yet45. A. able B. sorry C. glad D. afraid46. A. sixth B. seventh C. eighth D. ninth47. A. so B. if C. then D. because48. A. neighborhood B. family C. school D. grade49. A. excited B. tired C. pleased D. worried50. A. think about B. hear from C. agree with D. look for51. A. lonely B. away C. almost D. already52. A. riding B. walking C. playing D. running53. A. jumpers B. runners C. doctors D. teachers54. A. got B. kept C. made D. found55. A. made B. played C. had D. succeededIV. Reading comprehension 15% (1x15=15)ACan you remember any of the bad habits you used to have when you were very young? Perhaps, as a baby, you used to suck(吮吸) your thumb. Of course, you do not do that any more, but you can surely remember your mother‟s efforts to train you. The good habits you now have in such matters as personal cleanliness were part of this early training.We may not suck our thumbs any more, but as we get older, we get other bad habits. We can‟t give them up easily, either. (Anyone who has tried to give up smoking knows this very well!) Each period brings its own problems. In babyhood, it‟s thumb-sucking; in childhood, it‟s nail-biting; in our teens, it‟s smoking; in middle-age, it‟s over-eating, and so on. And if anyone tells you that he has no bad habits, you can be sure that he must have the worst habit of all.56. Generally speaking, a child likes ______.A. sucking thumbsB. biting nailsC. smokingD. eating too much57. According to the passage, now we have good habits such as personal cleanliness, for which webenefit from(受益于) _______.A. the social conditionsB. some strict rulesC. our friends‟ kind helpD. our mothers‟ early training58. At the end of the story the writer says "And if anyone tells you that he has no bad habits, you canbe sure that he must have the worst habit of all". Here what do you suppose the worst habit is?A. Reading.B. Playing.C. Walking.D. Lying.59. Which of the following is NOT true according to the passage?A. It is difficult to get rid of our bad habits.B. At different ages, people have different bad habits.C. Giving up smoking is as difficult as giving up other bad habits.D. Sucking thumbs is a young child‟s bad habit.BThe yearly Academy Awards ceremony was once a private affair. Now, because of television, it is very much a public affair. Hundreds of people gather in Hollywood to see the Oscars presented to outstanding(杰出的) actors, and others involved in the motion picture industry. Millions more watch on television.It all began on May 16, 1929, when 270 men and women sat down to dinner at the Hollywood Roosevelt Hotel. There was no secret about the winners. The names of the winners had been known for months. Janet Gaynor, for example, had won as Best Actress. Douglas Fairbanks presented her with the famous gold statue. The little statue was not then called Oscar. Like a new actor, Oscar was unknown. About six years later, it somehow got that renowned name. A number of explanations have been offered for its origin, but nobody knows the true story for certain.Nowadays the results of the Oscar voting are kept secret. Only two people know the winners before the names are announced at the ceremony. The counting of votes is not done by one group of people but by different groups. Nobody except two members of an accounting(计票) company sees the final results.The information is not kept in open files. Winners‟ names are placed in closed envelopes. The accountants each carry a complete set of envelopes to the ceremony. One set is simply a spare to be used in case(万一) something happens to the other one.60. In Paragraph 2, the underlined word …renowned‟ means _______.A. strangeB. wonderfulC. much-dislikedD. famous61. May 16, 1929 marks _______.A. Douglas Fairbanks‟ first winning of an Academy AwardB. the first time Oscar got its nameC. the first time the Awards were kept secretD. Janet Gaynor‟s recognition as Best Actress62. Two sets of envelopes are prepared for the ceremony _______.A. one for New York, one for HollywoodB. in order to be perfectly safeC. one for the ceremony, one for the newspapersD. just because that is the customCBamboo is one of the nature‟s most surprising plants. Many people call this plant a tree, but it is a kind of grass.Like other kinds of grass, a bamboo plant may be cut very low to the ground, but it will grow back very quickly. A Japanese scientist recorded one bamboo plant that grew almost 1.5 meters in 24 hours! Bamboo grows almost everywhere in the world except Europe. There are more than 1,000 kinds of bamboo that grow around the world on both mountains and plains(平原).Not all bamboo looks the same. Some bamboo plants are very thin. They may only grow to be a few centimeters wide while others may grow to more than 30 centimeters across. This plant also comes in different colors, from yellow to black to green.Many Asian countries have been using bamboo for hundreds of years. They often use bamboo for building new buildings. As a matter of fact, the cables(绳索) that hold up the hanging bridge across the Min River in Sichuan are made of bamboo. The bridge has been in use for more than 1,000 years, and is still holding strong.In Africa, engineers are teaching poor farmers how to find water using bamboo. These African countries need cheap ways to find water because they have no money, and their fields often die from no rain and no water. It seems that bamboo is one of the best things they can use. Bamboo pipes and drills(钻) can help to make the poor thirsty fields to be watered.63. How is bamboo like grass?A. It is thin and easy to cut.B. It grows everywhere.C. It grows quickly after it‟s cut short.D. It is short and green.64. The sentence “while others may grow to more than 30 centimeters across.” means “some otherbamboo plants may grow to be very _______.”A. shortB. strongC. thickD. tall65. From the text we know ______.A. most people call bamboo plant treesB. a bamboo plant may grow 4.5 meters in three daysC. the bamboo plant changes its colors when it growsD. a bridge held by bamboo cable was built thousands of years ago66. Why did the engineers teach the poor farmers in Africa to make use of bamboo?A. Because it is cheap.B. Because it is colorful.C. Because it drills fast.D. Because it is used by Asians.67. Which of the following is NOT true?A. There are many different kinds of bamboo with different colors.B. Cables made of bamboo can last for over a thousand years.C. Bamboo can be used for buildings, bridges and watering projects(工程).D. Bamboo plants are able to grow well in any part of the world.DIn most towns today, you can see teenagers standing over electronic machines with flashing lights, shooting at spaceships from other planets and dropping bombs on strange monsters(恶魔). The machines have names like Space Warrior, Dark Invader and so on. It used to be believed that damage was done only to those strange visitors from outer space, but now it seems that they are striking back.Many teenagers like electronic games so much that they can‟t stop playing. They spend hours tightly holding the joystick controls and constantly pressing buttons marked “fire”. They develop pains on their fingers because of the constant pressure. They play and play that the pains have no chance to cure properly. The rapid wrist movement required to guide the spaceship across the screen causes another problem: the muscles of the wrist and arm become so inflamed and swollen(充血红肿) that they press against the bones. This condition is what doctors now call “Space Warrior‟s Wrist”.Other strange aches and pains are also likely to affect the elbows and shoulders.Another even more alarming problem is shown by the case of a 17-year-old girl, which was recently reported in the British Medical Journal. She had been playing various kinds of electronic games for more than two hours a day. Her father repaired games and machines and she could use the cassettes and systems in his workshop as often as she liked. One day, after playing a game called Dark Invader, she lost consciousness(晕倒) and fell to the floor.Doctors who examined her found she was suffering from an unusual illness caused by lights flashing at a particular frequency.68. Electronic games are found very popular with _______.A. people living in townsB. students studying in high schoolsC. girls working in their father‟s workshopsD. young people69. The case of a 17-year-old girl given by the writer shows that the writer _______.A. supports playing electronic gamesB. feels very sorry for the girlC. disagreed with young people‟s playing electronic gamesD. feels worried about young people‟s poor he alth70. From the passage we can know that playing electronic games is _______.A. enjoyable and helpful to the studyB. exciting but harmful to the health and studyC. interesting but harmless to the eyesD. amusing and pleasant卷II 主观题(60分)V. Vocabulary 20%A. Complete the sentences according to the first letters of the words given. 10%(0.5x20=10)1. Titanic crashed into an i______________ and then sank into the deep Atlantic.2. Doing scientific researches needs f___________ thinking, which means that we can‟t think infixed(固定的) ways.3. When facing the financial crisis(经济危机), all the employees thought of every possible way to helpthe company w_____________ the tough situation, which made the manager greatly pleased.4. He is such a s______________ person that he never listens to others‟ advice.5. There used to be many s______________ of animals on the island. Now most of them have died outbecause of the pollution.6. The position is very c______________ because only one person will be selected out of the 400 jobhunters.7. Summer vacation is a______________. What are you planning to do in the coming vacation?8. You can see yourself in the mirror because it r______________ light.9. I want to e______________ my holiday in Paris for another one week because there are so manyfantastic sights to see. Five days is not enough.10. If you want to be a polite person, you should be careful with your b______________ in public.11. A lot of people in the western part of the country are suffering from d______________. Neitheranimals nor people have enough water to drink.12. I‟m going to buy some nails and a saw from the h______________ store.13. His face r______________ disappointment when he heard the bad news.14. In 2014, young a______________ aged from 14 to 18 will take part in the Youth Olympics inNanjing.15. Try to avoid s_____________ exercise immediately after a meal. It‟s bad for your health.16. This ancient temple is l______________ on the top of the mountain and it attracts a great manytourists every year.17. After being surrounded by the enemy, the soldiers had to y______________ to them. Otherwise,they would be killed.18. Please r______________ him to bring the pictures to school; as you know, he is a forgetful person.19. This building will be c______________ in three months. After the construction is finished, we willmove into it.20. The archaeologists felt so surprised to see that the ancient works of art were preserved in suchgood c______________.B. Fill in the blanks with the proper forms of the given words. 5% (0.5x10=5)1.Every year, Yale University receives thousands of ___________ forms. These ___________ areall excellent students coming from all over the world. (apply)2.Her questions about my private life ____________ me a lot. Noticing it, she stopped asking me.But it is really an ____________ experience that I will never forget. (embarrass)3.All the characters in the book are ___________ and I can‟t even __________the ending of it.(imagine)4.They questioned the ____________ of the information in the file. They claim all the informationshould be kept ___________.(accurate)5. Nanjing was___________ by storms last night and the trees took a __________ in thestorm.(buffet)C. Choose the proper phrases from the box and complete the sentences with the right forms ofthem. 5% (1x5=5)1. This ancient building in the east corner of the city, attracting thousands of visitors every day.2. He the wisest man in the village and every villager shows respect to him.3. The top universities choose the students with creative and critical(批判的) thinking instead of those students only with high scores.4. the extremely hot weather, the farmers are still working hard in the fields.5. When night comes, all the streets neon lights in big cities.VI. Fill in the blanks with proper prepositions and adverbs. 5% (0.5x10=5)1. In China many people think that graduating ____________ college is very easy.2. Monica wore a new dress to the party last night and she looked very pretty ____________it.3. Y ou can‟t make the machine work ____________ such a high temperature, otherwise it will stop working.4. At weekends, you can see a lot of people lining ____________ in front of the cinema to buy tickets.5. In this match, you can have the chance to pit your strength ____________ the professional football players.6. --When you are free, do you mind helping me ____________ the housework?--Of course not, and I‟m coming in a minute.7. This building is the most beautiful one ____________ seen.8. Flowers can grow here all year ____________ because the climate here is very mild.9. --Can you help me work ____________ the total of all these numbers?--Why not use a calculator? It will be much easier.10. Nearer the poles, the sun‟s rays strike the Earth ____________ a low angle and the heat is not sointense.VII. Fill in the blanks with the proper forms of the given verbs. 5% (0.5x10=5)1.--- Hi, Terry, can I use your computer for a while this afternoon?--- Sorry. It ___________ (repair) now.2.This is the first time we___________ (see) a film in the cinema together.3.I was out of town at the time, so I did n‟t know exactly how it ___________(occur).4.--- What is the price of gas these days?---Oh, it ___________ (rise) sharply since last month.5.The staff were working till midnight even at weekends so that they ___________ (can finish) theirproject in time.6.Bill suggested ___________(hold) a meeting on what to do for the new project during thevacation.7.Tom was disappointed that most of the guests ___________(leave) when he __________(arrive)at the party.8. On Christmas Day, children couldn‟t wait ___________(open) their presents which _________(give)by their parents. But they all believed that their presents were from Father Christmas who didn‟t exist in the world at all.VIII. Rewrite the sentences without changing their meanings. 5% (1x5=5)1. When Mr. Green was young, his father always made him work from morning till night.When Mr. Green was young, he _____________ always _____________ ____________ ______________ from morning till night by his father.2.As we didn‟t reach them on the phone, we sent an email, instead._____________ ______________ them on the phone, we sent an email, instead.3.The hall can hold at least 100 people.100 people can ______________ _____________ the hall.4.After a day and a night, the professor succeeded in working out the answer.After a day and a night, the professor _____________ ____________ work out the answer.5. You are not a politician, and I am not a politician, either.You are not a politician. ______________ ______________ I.IX. Translation. 10% (0.5x20=10)1.在得知经理也卷入这个案件以后,所有人都显得很震惊。
龙岗区2010—2011学年第二学期期末高中学业评价试题高一化学A 卷本试卷共25小题,共6页。
总分100分,考试时间为90分钟。
注意事项:1.答卷前,考生首先检查答题卡是否整洁无缺损;考生务必用黑色字迹的钢笔或签字笔将自己的学校、姓名、考号和座位号填写在答题卡上。
2.选择题每小题选出答案后,用2B 铅笔把答题卡上对应题目的答案标号涂黑;如需改动,用橡皮擦干净后,再选涂其他答案;不能答在试卷上。
不按以上要求作答的,答案无效。
3.非选择题必须用黑色字迹钢笔或签字笔作答,答案必须写在答题卡各题目指定区域内相应位置上;如需改动,先划掉原来的答案,然后再写上新的答案;不准使用铅笔和涂改液。
不按以上要求作答的,答案无效。
4.考生必须保持答题卡的整洁,不折叠,不破损,考试结束后,将试卷和答题卡一并交回。
可能用到的相对原子质量:H=1 O=16 C=12 N=14 S=32一、单项选择题(本题包括15小题,每小题3分,共45分,每小题只有一个选项符合题意)1.下列有关127 53I 和13153I 说法,正确的是A .127 53I 和131 53I 的核外电子数不同B .127 53I 和13153I 的中子数分别为74和78 C .127 53I 和131 53I 属不同种元素 D .127 53I 和131 53I 是同一种核素2.短周期金属元素甲~戊在元素周期表中的相对位置如右表所示: 下面判断正确的是A .离子半径: 丙<丁<戊B .金属性:甲>丙C .氢氧化物碱性:丙>丁>戊D .最外层电子数:甲>乙3.如图所示,是由碳棒、铁片和氯化铜溶液组成的原电池,下列叙述正确的是A .碳棒为正极B .碳棒上的电极反应式为2H 2O + O 2 + 4e - = 4OH ―C .铁片上的电极反应式为2Cl ――2e -= Cl 2↑FeD.铁片为阴极4.下列涉及有机物的性质或应用的说法不正确...的是A.干馏煤可以得到甲烷、苯和氨等重要化工原料B.用于奥运“祥云”火炬的丙烷是一种清洁燃料C.用大米酿的酒在一定条件下密封保存,时间越长越香醇D.氯乙烯、聚乙烯、苯乙烯都是不饱和烃5.对于化学反应3W(g)+2X(g) 4Y(g)+3Z(g),下列反应速率关系中,正确的是A. υ(W) = 3υ(Z)B. 2υ(X) = 3υ(Z)C. 2υ(X) = υ(Y)D. 3υ(W) = 2υ(X)6.X、Y、Z、W均为短周期元素,它们在元素周期表中相对位置如图所示。
南昌大学2010~2011 学年第二学期期末考试试卷7.(0109)庚烷、1-庚炔、1,3-己二烯中区别出1-庚炔最简明的办法是采用:7Br2 + CCl4(B) Pd + H2(C) KMnO4,H+(D) AgNO3,NH3溶液8.(0045)烯烃与卤素在高温或光照下进行反应,卤素进攻的主要位置是:(A) 双键C原子(B) 双键的α-C原子(C) 双键的β-C原子(D) 叔C原子9.(0048)CF3CH=CH2 + HCl 产物主要是:(A) CF3CHClCH3(B) CF3CH2CH2Cl(C) CF3CHClCH3 与CF3CH2CH2Cl相差不多(D) 不能反应10.(0224)(CH3)2CHMgCl + 环氧乙烷生成哪种产物?11.(0225)下列化合物苯甲醇(I),二苯甲醇(II),三苯甲醇(III),甲醇(IV)与HBr反应的活性顺序为:(A) III>II>I>IV (B) IV>I>II>III (C) IV>III>II>I (D) I>II>III>IV 12.(0234)下列哪种化合物能形成分子内氢键?(A) 对硝基苯酚(B) 邻硝基苯酚(C) 邻甲苯酚(D) 对甲苯酚13.(0236)比较苯酚(I)、环己醇(II)、碳酸(III)酸性的大小:(A) II>I>III (B) III>I>II(C) I>II>III (D) II>III>I14.(0069)1-甲基-4-叔丁基环己烯与溴在稀甲醇溶液中的加成产物是:15.(7517)下列化合物碱性最弱的应是:(A) HC≡C-(B) (C6H5)3C-(C) H2C=CH-(D) C6H5-16.(0090)比较C≡C(I), C=C(II), C─C(III), C=C─C=C中的C2-C3 (IV)的键长次序为:(A) I>II>III>IV (B) III>II>IV>I(CH3)3CBrOCH3CH3C(CH3)3BrOCH3CH3(CH3)3CBrOCH3CH3(CH3)3COCH3CH3Br(A)(B)(C)(D)23. (0104)已知RC≡CH + NaNH 2 ──> RC≡CNa + NH 3,炔钠加水又能恢复成炔烃,RC≡CNa + H 2O ──> RC≡CH + NaOH ,据此可推测酸性大小为: (A) NH 3>RC≡CH>H 2O (B) H 2O>RC≡CH>NH 3 (C) H 2O>NH 3>RC≡CH (D) NH 3>H 2O>RC≡CH 24.(0106)炔烃经臭氧化可得到什么产物?(A) 过氧化物 (B) 醛或酮 (C) 环氧化物 (D) 羧酸 25.(0107)确定分子是否具有共轭结构,通常采用什么光谱? (A) 红外光谱(IR) (B) 紫外光谱(UV)(C) 核磁共振谱(NMR) (D) 质谱(MS) 26.(0108)区别丙烯、丙炔、环丙烷时鉴别丙炔最好的办法是采用: (A) Br 2, CCl 4 (B) KMnO 4, H +(C) 臭氧化 (D) Cu 2Cl 2, NH 3溶液 27.(0111)二溴苯有三种异构体o-,m-,p-,其熔点最高者为: (A) o-二溴苯 (B) m-二溴苯 (C) p-二溴苯 (D) 无法预测 28.(0129)用KMnO 4氧化的产物是:29. (0134)由 → 最好的路线是:(A) 先硝化,再磺化,最后卤代 (B) 先磺化,再硝化,最后卤代 (C) 先卤代,再磺化,最后硝化 (D) 先卤代,再硝化,最后磺化 30.(0146) 主要产物是:31.(0222)Williamson 合成法是合成哪一种化合物的主要方法? (A) 酮 (B) 卤代烃 (C) 混合醚 (D) 简单醚 32.下列分子式哪个对应的化合物为恰好是一个环或者一个双键?COOH C(CH 3)3CH 3COOH COOH COOH CHOC(CH 3)3(D)(C)(B)(A)ClO 2N NO 2SO 3H CH 2CH 2CH 2COClAlCl3CH 2CH 2CH 2CO(C)(A)COCH 2CH 2CH 3(D)(B)O33.下列化合物哪些加水产生氢气?34.35.下列哪种表明了上述化合物的酸性降低顺序?36.上述反应是下列哪种反应?(A)消除反应(B)亲核取代(C)亲电加成(D)亲电芳香取代(E)羟醛缩合37.这个化合物有几种立体异构体?(A)2种(B)3种(C)4种(D)5种(E)6种38.下列哪种为间-氟苯酚溴化过程中产生的最稳定共振式?39.为得到最高产率的叔丁基甲醚,下列哪种原料的组合是最恰当的?40.下列哪种反应得到1-戊醇为主要产物?,乙醚溶液中,然后。
成都外国语学校2010-2011学年度期末考试七年级数学试卷命题人:叶新全 审题人:叶新全A 卷(满分100分)一、选择题(每小题3分,共36分)1、 小海做了如下4道计算题:(1)m n m nx x x++=(2)339x x x ⋅=(3)m nm nx xx --⋅=(4)(0)mnm nx x xx -÷=≠ 你认为小海做对的有( )A 、 1道B 、2道C 、3道D 、4道2、 成都市出租车的收费标准是:起步价9元,当路程超过2 km 时,每超过1km 加收1.4元。
若出租车行驶a km(2a >),则乘客应付费( )元A 、 9 1.4a +B 、9 1.4(2)a +-C 、9 1.4a -D 、9 1.4(2)a -- 3、 若221(+)+b 2x ax x +=,则a, b 的值为( )A 、 1a=1, b=4 B 、1a=1, b=4- C 、 1a=2, b=2 D 、1a=0, b=2-4、 下列各题中,能用平方差公式计算的是( )A 、11()()22a b a b -- B 、11()()22a b a b --+ C 、11()()22a b a b --- D 、11()()22a b a b +--5、 如图,DE ∥AB ,13CAE CAB ∠=∠,∠CDE=75°,∠B=65°,则∠AEB 是() A 、 70° B 、 65° C 、 60° D 、 55° 6、 已知,如图,AB ⊥BC ,BE ⊥AC ,∠1= ∠2,AD=AB ,则( )A 、∠1=∠EFDB 、 BE=EC C 、 BF=DF=CD D 、 FD ∥BC7、 近似数0.10和53.2510-⨯的有效数字分别是a 和b ,那么baa b ⋅的值是( )A 、3B 、72C 、 16D 、 无法计算8、 现有长度为3、4、5、6的四根木棒,从中任取三根能组成三角形的个数为( ) A 、1 B 、2 C 、3 D 、49、 如图,AC 、BD 相交于点O ,∠1= ∠2,∠3= ∠4,则图中有( )对全等三角形。
河南省伊川高中II 部2010-2011学年高二下学期第二次月考文 数 试 题 出题人:张晓飞一、选择题(本大题共12小题,每题5分,共60分)1.已知,x y 之间的一组数据如表所示,对于表中数据,现在给出如下拟合直线,则根据最小二乘法思想判断拟合程度最好的直线是( )A . 1y x =+B . 21y x =-C . 1.60.4y x =-D .1.05.1+=x y2.甲乙丙丁四位同学各自对,X Y 两变量的线性相关性做实验,并用回归分析E )A .甲B .乙C .丙D .丁 3.据二分法原理求方程022=-x 的根,得到的框图称为( )A.工序流程图B.程序流程图C.知识结构图D.组织结构图 4.已知①正方形的对角线相等,②矩形的对角线相等,③正方形是矩形。
根据“三段论”推理出一个结论,则这个结论是 ( )A .正方形的对角线相等B .矩形的对角线相等C .正方形是矩形D .其它 5.下面使用类比推理恰当的是( )A .“若33a b ⋅=⋅,则a b =”类推出“若00a b ⋅=⋅,则a b =”B .“若()a b c ac bc +=+”类推出“()a b c ac bc ⋅=⋅”C .“若()a b c ac bc +=+” 类推出“a b a bc c c+=+()0≠c ” D .“()n n nb a ab =” 类推出“()n n nb a b a +=+”6.已知数列{}n a 的前n 项和()22n n S n a n =≥,而11a =,通过计算23,a a ,猜想n a =( )A .()221n + B .()21n n + C .221n - D .221n - 7.下列几种推理是演绎推理的是( )A .在数列{}n a 中,()111111,22n n n a a a n a --⎛⎫==+≥ ⎪⎝⎭,由此归纳出{}n a 的通项公式B.某高校高三(1)班有55人,(2)班有54人,(3)班有52人,由此得出高三所有班级的人数都超过50人。
高二生物第二次月考试题一、选择题(每小题只有一个正确答案,每小题1分,共60分)1.下列人体内水和无机盐平衡调节的叙述中,正确的是:A.血浆渗透压降低时,引起口渴B.机体失水时,抗利尿激素分泌减少C.细胞外液渗透压降低时,引起口渴D.抗利尿激素使细胞吸水能力增强2.关于内环境稳态调节机制的现代观点是A.神经调节C.神经—体液调节B.体液调节D.神经—体液—免疫调节3下列图示中,正确表示血浆、组织液和淋巴三者之间关系的是A BC D4.下列属于人在炎热环境中的身体变化是①皮肤血管收缩②增加皮肤的血流量③汗腺分泌增多④汗液几乎不分泌⑤代谢活动增强A.④⑤B.②③C.①④⑤D.①②⑤5.在一条离体神经纤维的中段施加电刺激,使其兴奋。
下图表示刺激时的膜内外电位变化和所产生的神经冲动传导方向(横向箭头表示传导方向)。
其中正确的是6.当人体内血糖浓度升高时,在体内的分泌量会增加的激素是A.甲状腺激素B.胰岛素C.盐皮质激素 D.生长激素7.在细胞免疫中,效应T细胞发挥免疫作用的机制是A.杀伤靶细胞,使之裂解B.与抗原结合使其失去活性C.直接吞噬靶细胞将其分解D、将抗原呈递给B淋巴细胞8.关于抗体的叙述中错误的一项是A.抗体能与相应的抗原特异性结合,产生免疫反应B.抗体的基本组成单位是氨基酸C.抗体是由B淋巴细胞直接产生并分泌的D.抗体和特异性抗原结合,产生的免疫反应属于体液免疫9.下列与免疫失调无关的疾病是A.过敏性鼻炎B.血友病C.艾滋病D.系统性红斑狼疮10.关于抗体的叙述中错误的一项是A.抗体能与相应的抗原特异性结合,产生免疫反应B.抗体的基本组成单位是氨基酸C.抗体是由B淋巴细胞直接产生并分泌的D.抗体和特异性抗原结合,产生的免疫反应属于体液免疫11.下列与免疫失调无关的疾病是A.过敏性鼻炎B.血友病C.艾滋病D.系统性红斑狼疮12.如图把含有生长素的琼脂小块,分别放在甲、乙、丙三株幼苗切面端的不同位置上,然后从左侧给予光照。
得分 阅卷人四、设计题(10分)请设计相同频率、相同幅值,但相位不同的两列正弦波的相位差的测量方案,要求:4、简述测量基本原理;5、绘出测量方案简图;6、简述测量过程。
答:本题答案分为如下几种:1、示波器直接测量法2、李萨如法测量相位差3、单片机测量电路法等几种方法,单纯利用第一种方法过于简单,适当给分,按第二种和第三种方法回答可以根据情况适当扣分。
下面给出参考答案:相位差测量的基本原理是基于频率信号的测量。
它可将不同相位的信号整形为方波信号送入单片机,这样就可将相位差的测量转变为求方波的脉宽,图4.1所示是其相位差测量电路。
该电路将两路信号输入到电路接入端,再分别经限幅、滤波和整形处理,然后将得到的两路方波信号各自输入到单片机的两个捕获端口。
之后,在单片机中经过计算,即可得到脉宽以及周期,最终得到两个周期稳定的模拟输入信号之间的相位差。
图4.2所示是其相位差波形图。
在图4.2中的两路相位不同的方波信号中,T1为信号1的上升沿到来时的时刻,T2为信号2上升沿到来时的时刻,如果可同时得到方波信号的周期T ,则它们之间的相位差的理论计算公式为这样,只需要得到这两路信号的上升沿时刻及其周期,便可计算出它们的相位差。
得分 阅卷人五、论述题(10分)请列举出不少于5种教材未涉及到的现代检测技术,并简述其用途。
答:本题主要考察学生对现代检测技术的最新进展的了解情况,可以是上课时补充的材料中的检测技术,也可以是通过其他途径了解到的检测技术的最新进展,因此,评分标准不唯一,只要符合题意即可,以下列出部分参考答案,每一条计2分,技术和用途各占1分。
1、生物传感器:电子鼻等,可用于气味的检测和分析。
2、核磁共振技术:医学诊断。
3、加速度传感器:电梯的控制 4、雷达检测技术:飞行器的检测 5、微粒检测技术:空气质量检测等图4.1相位差测量电路图4.2相位差波形图学院 专业 级 学号 姓名 ……………………密………………………封………………………线…………………………。
四年级数学第二学期模拟考试卷一、直接写出得数:(8分)0.1-0.06 = 0.3+0.4 = 0.3×4 = 0.6-0.2=0.5×0.6= 0.005×100 = 20÷1000 = 0.26+0.37=二、用竖式计算,最后两道要验算。
(14分).56+8.59 = 45.36-26.08= 1.36×0.4=48÷015= 5.6×4.7= 10÷0.25=三、计算下面各题:(12分)÷(2.8-1.2) 0.61×3.3+0.61×6.76.5×0.4÷0.05 1.68÷〔0.6×(5-3.6)〕四、解方程:(12分)112-X=45 X×23=184 3.6÷X=0.4537+X=13.5 26-2X=10 X+3X=48五、填空:(共20分,每空格1分,第2、5、7每空格0.5分)1、0.5里面有()个0.1,0.36里面有()个0.01。
2、8.95中的5在()位上,表示有()个(),9在()位上,表示有()个()。
3、由0.32变成0.032,小数点向()移动()位,小数就()倍。
4、0.26×0.07的积是( )位小数。
5、找规律填数。
0.4,1.2,3.6,( ),( )。
19.2,4.8,1.2,( ),( )。
6、1.89×2.9的积保留一位小数约是( ),保留两位小数约是()7、 82厘米=( )米 80千克=( )吨69克=()千克 1千克500克=()千克8、骰子有六个面,标有1~6个点,每投掷一次,点数大于3点有()种可能,小于3点有()种可能。
9、扑克牌每一种花式有13张,标有1~13点。
两人进行抽牌游戏,抽出的点数大于()时的一方为赢才最公平。
10、两根小棒长分别是5厘米、10厘米,再有一根()厘米的小棒就可以围成一个三角形。
座位号2010——2011学年第二学期中期试题九年级数学(满分150分,时间120分钟)一、细心选一选(本题有10小题,每小题3分,共30分)下面每小题给出的四个选项中,只有一个是正确的,请你把正确选项前的字母填在题后的括号内.注意可以应用恰当的方法来选取正确答案.1.4 -的相反数是( )A .4B .4 -C .41D .41-2.由四舍五入法得到的近似数6.8×103,下列说法中正确的是( )A .精确到十分位,有2个有效数字B .精确到个位,有2个有效数字C .精确到百位,有2个有效数字D .精确到千位,有4个有效数字 3.如图,把一个长方形的纸片对折两次,然后剪下一个角,为了得到一个锐角为60︒ 的菱形,剪口与折痕所成的角α 的度数应为( )A .15︒或30︒B .30︒或45︒C .45︒或60︒D .30︒或60︒ 4.已知()0332=++++m y x x 中,y 为负数,则m 的取值范围是( ) A. m >9 B. m <9 C. m ->9 D. m -<9 5.如图,边长为a 的六角螺帽在桌面上滚动(没有滑动)一周,则它的中心O 点所经过的路径长为( ) A .a 6 B .a 5 C .πa 2 D π πa 36.函数xy 2=与函数x y 2-=具有某种关系,因此已知函数xy 2=的图像,可以通过图形变换得到x y 2-=的图像,给出下列变换①平移②旋转③轴对称④相似(相似比不为1),则可行的是( )A .①③B .②③C .①②③D .①②③④7.如图下列四个几何体,它们各自的三视图(主视图、左视图、俯视图)中,有两个相同而另一个不同的几何体是( )A. ①②B. ②③C. ②④D. ③④8.若不等式组0,122x a x x +⎧⎨->-⎩≥有解,则a 的取值范围是( )A .a >-1B .a ≥-1C .a ≤1D .a <19.王老师上班途中要经过3个十字路口,每个十字路口遇到红、绿灯的机会都相同,王老师希望上班经过每个路口都是绿灯,但实际上这样的机会是( ) A .21 B .83 C .81 D .6110.如图,在矩形ABCD 中,BC=8,AB=6,经过点B和点D 的两个动圆均与AC 相切,且与AB 、BC 、AD 、DC 分别交于点G 、H 、E 、F ,则EF+GH 的最小值是( )A .6B .8C .9.6D .10二、认真填一填(本小题有8小题,每小题4分,共32分) 要注意认真看清题目的条件和要填写的内容,尽量完整地填写答案. 11.133-的整数部分是__________.12.因式分解:=-3mn mn _____________________.13.将一副三角板摆放成如图所示,图中1∠= 度.第10题图①正方体②圆柱 ③圆锥④球第7题图第5题图第13题图14.某班第二组女生参加体育测试,仰卧起坐的成绩(单位:个)如下:43、41、39、40、37.这组数据的中位数是___________;方差是_______________. 15.已知点A (1,k -+2)在双曲线xk y =上.则k 的值为_________.16.二次函数322--=x x y 的图象关于原点O (0,0)对称的图象的解析式是_________. 17.如图,图①是一块边长为1,周长记为P 1的正三角形纸板,沿图①的底边剪去一块边长为21的正三角形纸板后得到图②,然后沿同一底边依次剪去一块更小的正三角形纸板(即其边长为前一块被剪掉正三角形纸板边长的21)后,得图③,④,…,记第n (n ≥3)块纸板的周长为P n ,则P n -P n-1= .18.在⊙O 中,半径R=5,AB 、CD 是两条平行弦,且AB=8,CD=6,则弦AC=_________.三、全面答一答(一)(本小题有8个小题,共38分)解答应写出文字说明、证明过程或推理步骤.如果觉得有些题有点困难,那么把自己能写出的解答写出一部分也可以.19.(6分)如图,AB//CD ,∠ACD=72°﹒⑴用直尺和圆规作∠C 的平分线CE,交AB 于E,并在CD 上取一点F ,使AF=AC ,再连接AF,交CE 于K ;(要求保留作图痕迹,不必写出作法)⑵依据现有条件,直接写出图中所有相似的三角形﹒(图中不再增加字母和线段,不要求证明)﹒20.(6分)计算:(1)31123212÷-----)( (2)()30cos 42750-+21.(6分)2011年全国两会在京召开,公众最关心哪些问题?九年级⑴班学生就老百姓最关注的两会热点问题,在网络上发布了相应的调查问卷.到目前为止,共有不同年龄段的2880人参与,具体情况统计如下:抽取的31-35岁人群的关注情况所调查的2880人年龄分布情况⑴请将统计表中遗漏的数据补上;⑵扇形图中表示31-35岁的扇形的圆心角是多少度?⑶从上表中,你还能获得其它的信息吗?(写出一条即可)A B CD第19题图…① ② ③ ④第17题图22.(10分)2011年3月10日,云南盈江县发生里氏5.8级地震.萧山金利浦地震救援队接到上级命令后立即赶赴震区进行救援.救援队利用生命探测仪在某建筑物废墟下方探测到点 C 处有生命迹象,已知废墟一侧地面上两探测点A、B 相距3米,探测线与地面的夹角分别是30°和60°(如图),试确定生命所在点 C 的深度.(结果精确到0.1米,参考数据:≈2 1.41,≈3 1.73)23.(10分)某市一楼盘准备以每平方米5000元的均价对外销售,由于国务院有关房地产的新政策出台后,购房者持币观望.为了加快资金周转,房地产开发商对价格经过两次下调后,决定以每平方米4050元的均价开盘销售.⑴求平均每次下调的百分率;⑵某人准备以开盘均价购买一套100平方米的房子.开发商还给予以下两种优惠方案以供选择:①打9.8折销售;②不打折,送两年物业管理费.物业管理费是每平方米每月1.5元.请问哪种方案更优惠?四、全面答一答(二)(本小题有5个小题,共50分)解答应写出文字说明、证明过程或推理步骤.如果觉得有些题有点困难,那么把自己能写出的解答写出一部分也可以.24.(8分)端午节前,第一次爸爸去超市购买了大小、质量都相同的火腿粽子和豆沙粽子若干,放入不透明的盒中.此时若随机抽取,则取出火腿粽子的概率为31.妈妈发现小亮喜欢吃的火腿粽子偏少,第二次妈妈又去买了同样的5只火腿粽子和1只豆沙粽子,与第一次爸爸买来的粽子混合,这时随机取出火腿粽子的概率为21.⑴请计算出第一次爸爸买的火腿粽子和豆沙粽子各有多少只?⑵若妈妈从盒中取出火腿粽子4只、豆沙粽子6只送爷爷和奶奶后,再让小亮从盒中不放回任取2只,问恰有火腿粽子、豆沙粽子各1只的概率是多少?(直接写出结果)25.(8分)为了预防流感,某学校在休息天用药熏消毒法对教室进行消毒.已知药物释放y(毫克)与时间x(分钟)成正比例;药物释之间的两个函数关系式及相应的自变量取值范围;0.45毫克以下时,学生方可进入教室,26.(10分)如图,在平行四边形ABCD 中,过点A 作AE ⊥BC ,垂足为E ,连接DE ,F 为线段DE 上一点,且∠AFE =∠B. ⑴求证:△ADF ∽△DEC⑵若AB =4,AD =33,AE =3,求AF 的长.27.(12分)如图,在等腰梯形ABCD 中,AD ∥BC .O 是CD 边的中点,以O 为圆心,OC 长为半径作圆,交BC 边于点E .过E 作EH ⊥AB ,垂足为H .已知⊙O 与AB 边相切,切点为F .⑴求证:OE ∥AB ;⑵求证:EH=12AB ; ⑶若AD 与⊙O 也相切,如图二,已知BE(BC)=5,BH=3,求⊙O 的半径.图一 图二28.(本小题满分12分)矩形OABC 在平面直角坐标系中位置如图所示,A 、C 两点的坐标分别为A (6,0),C (0,-3),直线x y 43-=与BC 边相交于D 点.⑴求点D 的坐标;⑵若抛物线x ax y 492-=经过点A ,求此抛物线的表达式及对称轴;⑶设⑵中的抛物线的对称轴与直线OD 交于点M ,点P 为坐标轴上一动点,以P 、O 、M 为顶点的三角形与△OCD 相似,求出点M 和符合条件的点P 的坐标. ⑷设⑶中符合条件的△POM 面积为S ,求S 的最大值.。
2010-2011学年度济宁市高三第二次质量检测试题•1.B•A yān/yān,ē/ē,zhuī/chuí;•B qì/qǐ,xiāo/ xuē,cháng/chǎng;•C mān/mái,jiǎ/jiǎ,lòu/ lù;•Djié/jié,biàn/biàn,chà/zhà。
•2.A•B姆-拇•C减-简•D谍-牒言-颜•3.C•A“支持拥护”后的逗号应改为分号;•B应将“最差”后面的顿号去掉;•D“真心为民”后面的问号应改为逗号。
•4.A•B、倚马可待:倚在即将出发的战马前起草文件,可以等着完稿,比喻文章写得快。
属用错对象,此处应用“指日可待”。
•C、师心自用:形容自以为是,不肯接受别人的正确意见。
褒贬误用。
•D、春意阑珊:指春天快要过去了。
属误解词意,此处应用“春意盎然”。
•5.D•A成分赘余,应去掉“对于”;•B语序不当,应将“除”放在“海上自卫队”之前;•C成分残缺,应在“吊”前加“人们将他”或“小偷被”之类的词语。
•6.C•A、B、D项,都是文中具体所指的情感内容;•C项是在摆道理,是虚指,不是具体所指••7.D•最贴切的理解应含着两层含意:“过去”里含着“故乡”;“故乡”又涵盖着“国家”,尤其是对国外的游子来说。
•A、B、C三项都是说今天的游子有对故乡的深挚的、抹不掉的情感,未明显说出与国家或祖国的关系;•因此,D项更全面一些••8.B•B项,“从高向低”的流动也包括人口的流动•9.C•追查,追寻查找•••10.D•A前一个“以”,介词,把;后一个“以”,连词,表修饰关系。
•B前一个“为”,表反诘语气的助词;后一个“为”,结构助词,宾语前置的标志。
•C前一个“乃”,副词,于是,就;后一个“乃”,副词,却,竟然。
•D两个“因”都是介词,趁机,趁着。
••11.B(③表明马绍秉公勤政,⑤表明马绍廉洁奉公,严以自律)•12.C(海都叛乱时,逃出来的应是蒙古人,而不是汉人。
岗背小学2010-2011学年度第二学期四年级期末考试语文试题一、积累天地。
(34分)1、看拼音写词语,并按字母表顺序排列下列汉字。
(6分)d ào d ã ji àng k āng li ú ch àng x í guan( ) ( ) ( ) ( )2、字典小作家。
(3分)当你在作文中遇到不会写的字时,用 查字法;在阅读中遇到不会读的的字时,用 查字法;遇到既不认识的又辨不出什么部首的字时,用 查字法。
3、在括号里填上与“看”表达意思相近的词语。
(4分)(1)“六一”联欢会上,同学们津津有味地( )小琪表演的节目。
(2)路边放的盆花,是供行人( )的,不能随便采摘。
(3)对事物( )愈仔细,就了解地愈全面。
(4)我们怀着激动的心情( )了革命烈士纪念碑。
4、词语万花筒。
(4分)(1)写出与战争有关的成语:写出含有“不”的四字词语:(2)选择其中的一个词语写一句话。
5、我的收藏夹。
(5分)(1)独出前门望野田, 。
这是白居易作的关于田园乡村的诗句,我还积累了类似的诗句,如: 。
(2)赛场上,一直处于中等位置的王小强在最后的冲刺中居然超越上来,取得了胜利,我想起了一句歇后语: 。
(3)喜欢钓鱼的爸爸在蒙蒙细雨中钓鱼,妈妈催他回家,他笑道:“ 。
“(填古诗词名句)6、补充句子。
(2分)(1)这么感人的故事, ?(补充成反问句) (2)春天在哪里? 。
(补充成设问句) 7、句子大变身。
(3分)(1)我和妈妈深情地望着在蒙蒙细雨中远去的老师的背影。
(缩句)(2)春风吹在我的脸上舒服极了。
(改成比喻句)(3)通过这次劳动,使我得到了锻炼。
(用符号修改病句) 8、用下列词语组成意思不相同的句子。
(4分)学习 经常 张老师 我 李丽 同学 语文 帮助 知道(1) (2) 9、仿写句子。
(3分)童年是一幅画,画里有我们五彩的生活;童年是 ;童年是 。
3. 道路工程定测阶段测量工作的主要内容有( BCD )。
A放线测量 B中线测量 C纵断面测量 D横断面测量
6. 道路定测中,中平测量的任务是测算下列各点的高程( BD )。
A水准基点 B导线点 C中线点 D中线控制点
3. 若观测附合导线的左角,则导线角度闭合差分配的原则将余数凑整到测角的最小为分配到短边大角上去。
桥轴线:
简述题试简述经纬仪测绘地形图的方法和操作步骤。
用经纬仪视距法测绘地形,其一个测站上的工作有哪些?
答:在测站上安置好经纬仪后,量出仪器高,测定仪器的竖盘指标差,将水平度盘读数安置于零度,并照准另一控制点作为测
量水平角的起始方向。
旋转照准部,照准待测碎部点上的标尺,先读出水平度盘读数,然后使十字死的横丝对准标尺上的仪器
高处,读上下视距丝处读数,得出视距读数。
(答案斟酌)
何谓曲线主要点?如何推算其里程?
偏角法详细测设曲线,当偏角增加方向与平盘刻划方向一致时,称为正拨曲线。
偏角法详细测没曲线.当偏角增加方向与平盘刻划方向相反时,称为反拨曲线。
14.
6. 桥梁施工平面控制网的基本网形有( ABD )。
A.双三角形 B.大地四边形 C.菱形 D.双大地四边形简述桥梁施工平面控制网的典型网形式及适用情况。
双三角形,大地四边形,双大地四边形,三角形和四边形的混合
隧道洞外控制测量的作用在于( B )。
A.按必要精度测定各洞口控制桩间的相对位置
B.作为引测进洞和测定洞内中线的依据
C.将隧道中线与线路中线在平面位置上正确衔接
D.将隧道中线与线路中线在高程位置上正确衔接
解释名词
桥轴线长度桥梁工作线
桥轴线长度 : 桥轴线上两岸二控制桩之间的水平距离
桥梁工作线: 曲线桥上,梁中线随着线路中线的弯曲形成一条折线,称为曲线桥的桥梁工作线。
导线转角:相邻两直线之间的水平角
桥梁偏角:相邻梁跨工作线构成的偏角称为桥梁偏角
制定变形观测周期的依据是什么?如何制定变形观测的周期?
变形观测的周期随荷载的变化及变形速率而异。
在施工过程中,高层建筑物的变形观测,通常楼层加高1—2层,应观测一次,大坝的变形观测,则随着水位的高低,而确定观测周期;已经建成的建筑物,在初期,变形值大,周期宜短,当变形趋于稳定后,即可停止观测。
对于频临破坏的建筑物,或者是即将产生滑坡,崩塌的地面,其变形速率会逐渐加快,周期要逐渐缩短。
简述桥梁施工平面控制网的作用和特点。
桥梁平面控制网的目的是测定桥轴线长度和据以进行墩、台位置的放样,也可用于施工过程中的变形监测。
在布设平面控制网时,控制点应尽可能使桥的轴线作为三角网的一个边,对于控制点的要求,除了图形刚强外,还要求地质条件稳定,视野开阔,便于交会墩位。
什么叫正拨和反拨?
答:偏角值与度盘读数增加方向一致,则称为正拨
偏角值与度盘读数减少方向一致,则称为反拨
为什么要进行槽口放线,如何进行?
管沟开挖时的,其开挖深度是如何控制的?
在下图中(比例尺为1:2000),完成下列工作:
(1)在地形图上用圆括号内的符号绘出山顶(△),鞍部的最低点(×),山脊线(—〃—〃—),山谷线(……)。
(2)B点高程是多少?AB水平距离是多少?
HB = 200.5m
(3)A、B两点间,B、C两点间是否通视?
AB不通视 BC通视
(4)由A选一条既短、坡度又不大于3℅的线路到B点
(5)绘AB断面图,平距比例尺为1:2000,高程比例尺为1:200。
填表计算(35分)。