练习题 1) It is said that a new robot ____by him in a few days. A) designed B) has been designed C) will be designed D) will have been designed 2)We are late. I expect the film ____by the time we get to the cinema. A) will already have started B) would already have started C) shall have already started D) has already been started 3) She will stop showing off if no notice____ of her. A) is taken B) takes C) will be taken D) has taken 4) Diamond ____in Brazil in 1971. A) is found B) has been found
C) was found D) had been found 5)“Have you moved into the new flat?” Not yet. The room____.” A) has been painted B) is painted C) paints D) is being painted 6) My pictures ____until next Friday. A) won't develop B) aren't developed C) don't develop D) won' t be developed 7) Tim ____since he lost his job three weeks ago. A) had been unemployed B) was unemployed C) has been unemployed D) has unemployed 8) A great number of colleges and universities ____since 1949. A) has been establish B) have been established C) have established D) had been established
天津理工大学考试试卷 ～2010学年度第二学期 《编译原理》期末考试试卷 课程代码： 0660116 试卷编号： 1-A 命题日期： 2010 年 6 月 15 日 答题时限： 120 分钟考试形式：闭卷笔试 大题号 一二三四 总分 一、单项选择题（请从4个备选答案中选择最适合的一项，每小题2分， 得 分 1 2 3 4 5 6 7 8 9 10 D C B D D B C B D C 1. 编译程序是对（） A. 汇编程序的翻译 B. 高级语言程序的解释执行 C. 机器语言的执行 D. 高级语言的翻译 2. 词法分析器的输出结果是（） A．单词的种别编码B．单词在符号表中的位置 C．单词的种别编码和自身值D．单词自身值 3. 在规范规约中，用（）来刻画可规约串。 A．直接短语 B．句柄 C．最左素短语 D．素短语 4. 与正规式(a* | b) * (c | d)等价的正规式是（） A．a* (c | d) | b(c | d) B．a* (c | d) * | b(c | d) * C．a* (c | d)| b* (c | d) D．(a | b) * c| (a | b) * d 含有Aα·，则在状态K时，仅当面临输入符号a∈FOLLOW(A)时，才采 5. 若项目集I K 取Aα·动作的一定是（） A．LALR文法 B．LR(0) 文法C．LR(1)文法 D．SLR(1)文法 6. 四元式之间的联系是通过（）实现的。
A. 指示器 B. 临时变量 C. 符号表 D. 程序变量 7．文法G ：S x Sx | y 所识别的语言是（ ） A ．xyx B ．(xyx) * C ．x n yx n (n ≥0) D ．x * yx * 8. 有一语法制导翻译如下所示： S b Ab {print “1”} A (B {print “2”} A a {print “3”} B Aa) {print “4”} 若输入序列为b(((aa)a)a)b ，且采用自下而上的分析方法，则输出序列为（ ） A ．32224441 B. 34242421 C ．12424243 D. 34442212 9．关于必经结点的二元关系，下列叙述不正确的是（ ） A ．满足自反性 B ．满足传递性 C ．满足反对称型 D ．满足对称性 10．错误的局部化是指（ ）。 A ．把错误理解成局部的错误 B ．对错误在局部范围内进行纠正 C ．当发现错误时，跳过错误所在的语法单位继续分析下去 D ．当发现错误时立即停止编译，待用户改正错误后再继续编译 二、判断题（每小题1分，共5分） 得 分 1. 文法G 的一个句子对应于多个推导，则G 是二义性的。（× ） 2. 动态的存储分配是指在运行阶段为源程序中的数据对象分配存储单元。（√ ） 3. 算符优先文法采用“移进－规约”技术，其规约过程是规范的。（ × ） 4. 删除归纳变量是在强度削弱以后进行。（ √ ） 5. 在目标代码生成阶段，符号表用于目标代码生成。（ × ） 5分，共15分） 得 分 1. 构造正规式(0∣1)* 00相应的正规式并化简。（共5分） （1）根据正规式，画出相应的NFA M （2分） I I 0 I 1 {x,1,2} {1,2,3} {1,2} {1,2,3} {1,2,3,4} {1,2} {1,2} {1,2,3} {1,2 } {1,2,3, {1,2,3,4} {1,2 } X 12 3 4 01
**** 大学课程考核试卷 xxxx---xxxx学年第一学期xxxx级xxxx专业（类） 考核科目大学英语三课程类别必修课考核方式闭卷卷别 B （注：考生务必将答案写在答题纸上，写在本试卷上的无效） I. Listening Comprehension (30 marks) Part 1: Short dialogues (10 marks, 1 mark each) Directions: Listen to the short dialogs and then choose the correct answers to the questions. 1. A. She did not take the shopping list along with her. B. She did not write a shipping list. C. She does not want to shop in a crowded supermarket. D. She wants to finish shopping quickly. 2. A. Write a statement for the woman. B. Revise what the woman will write. C. Fill in forms for the woman. D. Apply to an American university for admission. 3. A. Contemporary women no longer want to obey their husbands. B. Modern girls no longer love their husbands. C. At the marriage ceremony the bride should promise to obey her husband. D. At the marriage ceremony the bride should show loyalty to her husband. 4. A. She is weak in doing projects. B. She is weak in studies. C. She tends to work whole-heartedly. D. She is not willing to start a project. 5. A. The football match should be called off. B. The meeting should not include new items. C. The meeting should have another two items. D. The football should be included in the agenda. 6. A. It is important to offer an online friend a drink. B. It is delightful to get a drink from an online friend. C. Ensure that nobody puts anything harmful into your drink.
大学英语语法专项练习题 一、时态 1. By the end of April Peter here for three months. A. will have stayed B. will stay C. stays D. has stayed 2. I'm awfully sorry, but I had no alternative. I simply _____ what I did. A. ought to have done B. have to do C. had to do D. must do 3. We ________our breakfast when an old man came to the door. A. just have had B. have just had C. just had D. had just had 4. Ever since the family moved to the suburbs last year, they________ better health. A. could have enjoyed B. had enjoyed C. have been enjoying D. are enjoying 5. I bought a new house last year, but I ______my old house yet, so at the moment I have two houses. A. did not sell B. have not sold C. had not sold D. do not sell 6. I decided to go to the library as soon as I ________. A. finish what I did B. finished what I did C. would finish what I was doing D. finished what I was doing 7. He _________when the bus came to a sudden stop. A. was almost hurt B. was hurt himself C. was to hurt himself D. was hurting himself 8. I suppose that when I come back in ten years' time all those old houses _______down. A. will have been pulled B. will have pulled C. will be pulling D. will be pulled 9. Bob's leg got hurt ________the Purple Mountains. A. while he is climbing up B. while we were climbing up C. while we climbed up D. while he climbed up 10. Pick me up at 8 o'clock. I _______ my bath by then. A. may have B. will be having C. can have had D. will have had 11. If you smoke in a non-smoking section people________. A. will object B. objected C. must object D. have objected 12. By the end of this month, we surely _______ a satisfactory solution to the problem A. have found B. will be finding C. are finding D. will have found 13. We __________to start our own business, but we never had enough money. A. have hope B. hope C. had hoped D. should hope 14. The gray building is where the workers live, and the white one is where the spare parts______ A. are producing B. are produced C. produced D. being produced 15. While people may refer to television for up-to-the-minute news, it is unlikely that television __________the newspaper completely. A. will replace B. have replaced C. replace D. replaced 16. It's reported that by the end of this month the output of cement in the factory ________by about 10%. A. will have risen B. has risen C. will be rising D. has been rising 17. Until then, his family___________ from him for six months. A. didn't hear B. hasn’t been hearing C. hasn't heard D. hadn't heard
天津理工高等数学试题 一、填空题 1.设sin z xyz 1,-=则 z yz x cos z xy ?=?-. 2.设L 为圆周22x y 4+= ，则对弧长曲线积分=12π? . 3.交换积分次序( )22 2y 410y 0x 2dy f x,y dx =dx y)dy ????. 4.方程2x y"4y'4y e -++=的一个特解是2x x e -212 . 二、选择题 1.函数( )2222x y 0f x,y 0x y 0 +≠=+=?在点（0，0）处A . A.连续 B.两个偏导数都存在，且为0 C.两个偏导数都存在，但不为0 D.全微分存在 2.设有空间区域2221:x y z 1,z 0Ω++≤≥； 2222:x y z 1,x 0,y 0,z 0Ω++≤≥≥≥,则C . A.12xdv 4xdv ΩΩ=?????? B.12 ydv 4ydv ΩΩ=?????? C.12zdv 4zdv ΩΩ=?????? D.12 xyzdv xyzdv ΩΩ=?????? 3.设∑为球面222x y z 1++=的外侧，则222 x dydz x y z ∑++?? 等于C . A.0 B. 22y z 1+≤?? C.43π D.22x z 1 +≤-?? 4.下列微分方程中，通解为()2x 12y e c cos x c sin x =+的方程是B .
A.y"4y'5y 0--= B.y"4y'5y 0-+= C.y"2y'5y 0-+= D.2x y"4y'5y e -+= 三、计算二重积分2y 2D e dxdy y ??.其中D 为3x y =与5x y =所围区域. 1e 12- 五、设y u y f 2x,x ??=? ??，f 具有二阶连续偏导数，求 22 11222223u 2y 2y y 2f f f f x y x x x ?''''''=+--??. 六、设()f x 是一个连续函数，证明： （1）()()22f x y xdx ydy ++是一个全微分；（2）()()()u 2201d f u du f x y xdx ydy 2??=++ ??? ?，其中22u x y =+. 证明：（1） ()()()( ) 222222222222222222f x y xdx ydy xf (x y )dx yf (x y )dy (xf (x y ))2xyf (x y )y (yf (x y ))(xf (x y ))2xyf (x y )x y f x y xdx ydy ++=+++?+'=+??+?+'=+=??∴++ （2） ()()22 u x y 2222002222111d f u du f u du f (x y )d(x y )2221f (x y )(2xdx 2ydy)f (x y )(xdx ydy).2 +??==++ ???=++=++?? 七、求：由曲面2222z 0,z y 1,x y 4== +=+=所围空间立体Ω的体积. 解： 22010V dxdydz d d dz 14d d dz 3πρρρθθρρπΩΩ ====????????? 是一个全微分。
大学英语期末考试（A） 第一部分：单选题 1. The starting current of an a.c. motor is_____ the rated current. A. the same as B. much larger than C. less than D. equals 2. With a_____ load the voltage and current are in phase. A. pure resistance B. capacitive C. inductive D. None of the above 3. The emergency generator or emergency battery is connected to_____ on most large ships. A. distribution boards B. section boards C. emergency switch boards D. main switch boards 4. Switchboards may be of the dead-front type in which all live parts are installed behind_____ and only the operation handles and instruments are on the front. A. the capstan B. the collector C. the panels D. the surface 5. Remote control means that_____. A. the system is manned manually B. the system is situated remotely from the operator C. the system is controlled automatically D. all the above 6. The difference between measured and desired values is called_____. A. make-up B. desired value C. deviation D. set value 7. Prior to any overhaul work on electric equipment, it is important to ensure the circuits are_____. A. live B. dead C. excited D. on line 8. Before starting an engine by air ,the engine must _________ A. be turned by a turning gear for at least one minute B. be turned by a turning gear for at least two minutes C. be turned at least one complete turn D. be turned at least two complete turns 9. Shore power must be_____ during dock repair. A. disconnected B. switched off C. cut off D. connected 10. The switchboards for a.c. systems differ from the d.c. switch gear in that the open type panels are generally_____ and the dead-front switch gear is the common rule. A. permissibly B. permissible C. no permissible D. not permissible 11. Current changing in direction and rising and falling in value is_____.
大学英语语法试题及答案(2) 第 2 单元题目： 1.More people visit the Air and Space Museum honoring men and women who have pioneered flight and the exploration of space than _____ any other monument or museum in the entire country. A) visit B) to visit C) visited D) visiting 题目： 2.I work in a little room off the main entrance _____ museum, checking coats and other articles which people do not want to carry around as they tour the building. A) to B) of C) at D) for 题目： 3.What apparently had happened, three years ago, was that Kate _____ to a different building. A) went B) has gone C) had gone D) would go 题目： 4.She had waited at another museum for days and had spent all her money _____ to find Sidney. A) tried B) trying C) to try D) try 题目： 5.Without facts we cannot form a worthwhile opinion for we need to have factual knowledge _____ our thinking. A) which to be based B) which to base upon C) upon which to base D) to which to be based 题目： 6.Helen believes if a man robs her of five dollars it is the same as if he _____ a hundred. A) takes B) will take C) took D) has taken 题目： 7.He had a cottage which consists _____ three rooms, a bathroom and kitchen. A) of B) with C) in D) by 题目： 8.Behind him Paul could hear the angry man _____ to break the door open. A) trying B) to try C) tried D) try 题目： 9.Some companies have introduced flexible working time with less emphasis on pressure _____. A) than more on efficiency B) and more efficiency C) and more on efficiency D) than efficiency 题目： 10.The gardener is taking care of the place, no one _____ there at present. A) living B) lives C) lived D) to live 题目： 11.The City Bank will pa fifty pounds to _____ who helps the police to catch the man. A) someone B) nobody C) anyone D) somebody 题目： 12.When Paul Carson saw the big red American car coming towards him, he stopped his won car at the side, _____ room for it to pass. A) to make B) made C) making D) make 题目： 13.What bothers me is _____ I paid for all this stuff that we don't want anymore. A) what B) that C) which D) who 题目： 14.A hinge joint is _____ permits forward and backward movement of a door. A) the B) whose C) what D) those 题目：15.Garage sales in the United States serve many purposes _____ cleaning out unwanted items and making money. A) besides B) except for C) except D) apart from 题目： 16.This is _____ the most difficult job I have ever tackled. A) by rights B) by itself C) by oneself D) by far
1. 编译程序是对（ ） A. 汇编程序的翻译 B. 高级语言程序的解释执行 D.高级语言的翻译 2?词法分析器的输出结果是（ ） A .单词的种别编码 C ?单词的种别编码和自身值 B .单词在符号表中的位置 D .单词自身值 3.在规范规约中，用（ A .直接短语 ）来刻画可规约串。 B .句柄 C .最左素短语 D .素短语 4. 与正规式(a | b) (c | d)等价的正规式是( ) * * * * A . a (c | d) | b(c | d) B . a (c | d) | b(c | d) C. a (c | d) | b (c | d) D. (a | b) c| (a | b) d 5.若项目集I K 含有A 2009?2010学年度第二学期 《编译原理》 期末考试试卷 课程代码： 0660116试卷编号：1-A 命题日期： 2010年 6月 15日 答题时限： 120分钟 考试形式：闭卷笔试 得分统计表： 大题号 总分f -一一 -二二 -三 四 一、单项选择题（请从4个备选答案中选择最适合的一项，每小题 2分，共20 分） ?，则在状态K 时，仅当面临输入符号a FOLLOW （A ）时，才采取 A ?动作的一定是（ ） A. LALR 文法 B. LR （0）文法 C. LR （1）文法 D. SLR （1）文法 天津理工大学考试试卷
S b Ab {pri nt 1” A (B {pri nt 2” A a {pri nt 3” B Aa) {pri nt 4” A.指示器 B.临时变量 C.符号表 D.程序变量 7. 文法G: S x Sx | y 所识别的语言是（ ） * * * A. xyx B. （xyx ） C. x n yx n （n 》0） D. x yx 若输入序列为b （（（aa ）a ）a ）b,且采用自下而上的分析方法，则输出序列为（ ） A. B. 34242421 C. D. 9. 关于必经结点的二元关系，下列叙述不正确的是（ ） A .满足自反性 B .满足传递性 C.满足反对称型 D .满足对称性 10. 错误的局部化是指（ ）。 A .把错误理解成局部的错误 B.对错误在局部范围内进行纠正 C.当发现错误时，跳过错误所在的语法单位继续分析下去 D .当发现错误时立即停止编译，待用户改正错误后再继续编译 二、判断题（每小题1分，共5分） 得分 1. 文法G 的一个句子对应于多个推导，则 G 是二义性的。（X ） 2. 动态的存储分配是指在运行阶段为源程序中的数据对象分配存储单元。 （V ） 3. 算符优先文法采用“移进-规约”技术，其规约过程是规范的。 （X ） 4. 删除归纳变量是在强度削弱以后进行。（V ） 5. 在目标代码生成阶段，符号表用于目标代码生成。 （X ） 三、简答题（每小题5分，共15分） 得分 1. 构造正规式（0 I 1） 00相应的正规式并化简。（共5分） （1）根据正规式，画出相应的 NFA M （2分） （2）用子集法将NFA 确定化（2分） I I 0 I 1 1 8. 有一语法制导翻译如下所示：
Is It Better to Buy or Rent? The price of housing has kept increasing in recent years, which causes a big headache for people living in cities. A lot of people cannot afford to own a real estate property, so they choose to rent instead of buying an apartment. This group of people does not want to bear burden of mortgage so that they opt for a practical solution. Renting an apartment makes them have a place to stay and thus they can focus on work as well as personal life. Some other people, however, believe that an apartment owned by themselves makes them feel safe and relieved, so they are willing to sacrifice some other aspects of life to borrow money from the bank to buy an apartment. As far as I am concerned, to buy or to rent is all about it will be better to rent first and wait for the good timing when the price is going down to buy. Topic 2: On Job Hopping It seems that nowadays, very few young people are willing to stay in a job position for long, let alone for the whole life. They change jobs constantly. This results from several factors. Firstly, young people like fresh things, and it is easy for them to be fed up with old routine work. So when they stay in a position for a while,the excitement will fade out. They are quite realistic and not willing to waste time in a job they are not interested in. Thirdly, some young people are not satisfied with current salary, believing they deserve better pay. In my opinion, constant job hopping will not benefit young people in their career development. Every job has its own merits and young people can certainly learn something from it as long as they are patient and wise enough. Every job experience is valuable down the career path and young people shall be able to make the most of it. Topic 3: Online Social Network Modern people will be no stranger to online social network. Facebook, Renren and Kaixin001 are probably the most populous networks among Chinese netizen. In these networks, people interact with each other, be it a stranger or a friend, and have a lot of fun in the virtual world. This phenomenon could be a result of the fast development of the Internet and people's great interest of the virtual world. I think it is a very good new platform for people to keep in touch. But it should not be overused. Firstly, some people are addicted to it, which makes them want to get online 24 hours a day. When people spend too much time on one thing,they will naturally have not enough time for study and for work. Secondly, online social network change people's behavior of interacting with others. In virtual world, you just click the mouse and type in words instead of having a face-to-face talk. This will not benefit people's long term friendship, and even harm their interpersonal relationships in real world.
＜英语语法＞ 阅卷须知：阅卷用红色墨水笔书写，得分用阿拉伯数字写在每小题题号前，用正分表示，不得分则在题E号前写0;大题得分登录在对应的题号前；统一命题的课程应集体阅卷，流水作业；阅卷后要进行复核，发现漏评、漏记或总分统计错误应及时更正； Rewrite the follow ing senten ces using the two patters. (40%) We expect that he will be coming. a) It is expected that he will be coming. b) He is expected to be coming. 1. People think that he is coming. 2. They believe that he is hon est. 3. We know that you were in town on the night of the crime. 4. we un dersta nd that she was the best sin ger that Australia has ever produced. 5. People suppose that he is in Paris. 6. People say that the murderer is hidi ng in the woods. 7. There is a report that unidentified flying objects were seen over New Jersey last night. 8. There is a rumour that he has escaped to Dubli n. 9. People expect that electricity supply will be adequate n ext year. 10. People know him to be a good teacher. Part II A) Rewrite the following sentences using “ adjective+infinitive ” constructions.(10%) It is easy to remember this rule. This rule is easy to remember. 1.1 was sorry whe n I lear nt that he had had an accide nt. 2. You will be sad whe n you hear what I have to tell you. 3. They would be very surprised if they were to receive an invitation. 4. She is happy that she has found such a nice place to live in. 5. I was afraid at the thought of going past the hau nted house alone. 6. Bob was pleased whe n he heard he had bee n promoted. 7. I very much want to meet you. 8. We received your telegram and were delighted. 9. It was sen sible of you to stay in doors. 10 The clerk answered the call promptly. B) Replace the words in italics by an infin itive or an -ng con structi on .(10%) The headmaster suggested that I should try the exam in ati on aga in the followi ng year. The headmaster suggested my tryi ng the exam in ati on aga in the followi ng year.
2014 ～2015 学年度第二学期 《数据库系统概论》期末考试试卷 课程代码：0660096 试卷编号：命题日期：2015 年11 月22 日答题时限：120 分钟考试形式：闭卷笔试 一、单项选择题（请从4个备选答案中选择最适合的一项，每小题2分，共40分） 注意：须将本题答案写在下面的表格中，写在其它地方无效 1. 数据库系统与文件系统的根本区别在于（） A. 提高了系统效率 B. 方便了用户使用 C. 数据的结构化 D. 节省了存储空间 2. 数据库系统的核心是（） A．数据库B．数据库管理系统 C．数据模型D．软件工具 3.用二维表结构表示实体以及实体间联系的数据模型称为（） A．网状模型B．层次模型 C．关系模型D．面向对象模型 4. 数据库的概念模型独立于（） A．具体的机器和DBMS B．E-R图
C．信息世界D．现实世界 5. 层次型、网状型和关系型数据库划分原则是（） A．记录长度B．文件的大小 C．联系的复杂程度D．数据之间的联系 6.设在某个公司环境中，一个部门有多名职工，一名职工只能属于一个部门，则部门与职工之间的联系是（） A. 一对一 B. 一对多 C. 多对多 D. 不确定 7．在数据库的三级模式结构中，描述数据库中全体数据的全局逻辑结构和特征的是（）A．外模式B．内模式C．存储模式D．模式 8.在数据库结构中，保证数据库独立性的关键因素是（） A．数据库的逻辑结构B.数据库的逻辑结构、物理结构 C．数据库的三级结构D.数据库的三级模式和两级映像。 9．关系模型中，一个关键字是（） A．可由多个任意属性组成B．至多由一个属性组成 C．可由一个或多个其值能惟一标识该关系模式中任何元组的属性组成 D．以上都不是 10．同一个关系模型的任两个元组值（） A．不能全同B．可全同C．必须全同D．以上都不是 11. 有关系：R(A, B, C)，主码＝A；S(D, A)，主码＝D，外码＝A（参照于R）。关系R和S 的元组如表1、表2所示，指出关系S中违反关系完整性规则的元组是（）表1 R 表2 S A．A（1，2）B．（2，Null）C．（3，3）D．（4，1） 12．有一个关系：学生（学号，姓名，系别），规定学号的值域是8个数字组成的字符串，这一规则属于（） A. 实体完整性约束 B. 参照完整性约束 C.用户自定义完整性约束 D. 关键字完整性约束 13. 现有如下关系：患者（患者编号，患者姓名，性别，出生日期，所在单位）医疗（患者编号，医生编号，医生姓名，诊断日期，诊断结果）其中，医疗关系中的外码是（） A. 患者编号 B. 患者姓名