E__homework_2678C_第4次作业_119074266_作业+4
homework参考答案
prepare an orange;
P(empty);
P(empty);
put an apple on the plate; put an orange on the plate;
V(apple ); }}
V (orange); }}
第二章
son(){ while(1) { P(orange);
daughter(){ while(1) { p(apple); take an apple from the plate; v(empty); eat the apple; }}
P(Emptyseat); P(mutex); 查登记表,登记姓名,座 位号等;
V(mutex);
阅读; P(mutex); 查登记表,置空;
V(mutex); 离开;
V(Emptyseat); }
哲学家就餐问题
➢给所有哲学家编号,奇数号的哲学家必 须先拿左边的筷子,偶数号的哲学家必 须先拿右边的筷子。
2.8
3
10.4 0.5 13.0 13.5 3.1
6.2
4
10.5 0.3 13.5 13.8 3.3
11.0
平均周转时间: (2.0+2.8+3.1+3.3)/4=2.8 • 平均带权周转时间:
(2.0+2.8+3.1+3.3)/4=2.8
第三章
(2)采用短作业优先调度算法,则其调度顺序是1、 4、3、2
,总的运行时间为:
20+30+10 + 40+20+10 + 10+30+20=190ms 其程序运行时间关系图如下图所示:
第一章
第3-4次作业 答案操作系统 大学课程 作业
0 3 3 0
1 0 0 2
0 0 2 0
0 6 4 2
这时如果P0先归还它占有的(0 0 1 2),那么available的值是(1 1 1 2),可以找到一个执行次序p0,p2,p1,p3,p4保证所有进程都可以安全执行完,会处于安全状态,因此这个请求会被满足。
附加题
1.N个进程共享M个资源,一次只能保留或者释放一个资源。每个进程最大需要单元的数目不超过M,并且所有的最大需求的总和小于M+N。说明不会发生死锁。
第三次作业
7.1什么是忙等待?操作系统中其他种类的等待有什么?忙等待是否可以完全避免?为什么?
答:所谓忙等待是不断测试等待一个条件满足。
除了忙等待之外,操作系统中还有一种等待是让进程在等待状态阻塞等待一个条件满足,当条件满足时,通过中断告知进程。
忙等待的进程浪费CPU的时间,降低了效率,并且有可能导致优先级反转。但是并不能完全避免忙等待。如果在等待时间不是很长,并且系统内部进程的数量小,并且对CPU利用率要求不高的无优先级或者不同优先级的进程不会有同一个临界区的小型系统而言,可以考虑使用忙等待的方式解决简单的问题。另外,在多CPU的小型系统中,忙等待所导致的优先级反转的问题并不存在,因此这样的有优先级的小型系统也可以使用忙等待。
Semaphore bucket=3, well=1, jar=10, empty=1, full=0;
Void littlemonk()
{
while(1)
{
wait(empty);
wait(bucket);
wait(well);
取水;
signal(well);
wait(jar);
放水;
signal(jar);
课件计算机应用基础第四次作业答案.docx
一、单项选择题(只有一个选项正确,共17道小题)1. 在Word 的编辑状态,要将文档中选定的文字移动到指定位置去,首先对它进展的操作是单击______。
(A) "编辑"菜单下的"复制"命令(B) "编辑"菜单下的"去除"命令(C) "编辑"菜单下的"剪切"命令(D) "编辑"菜单下的"粘贴"命令你选择的答案:C [正确]正确答案:C解答参考:2. Word程序启动后就自动翻开一个名为______的文档。
(A) Noname(B) Untitled(C) 文件1(D) 文档1你选择的答案:D [正确]正确答案:D解答参考:3. 在Word的编辑状态下,连续进展了两次'插入'操作,当单击一次'撤消'按钮后______。
(A) 将两次插入的内容全部取消(B) 将第一次插入的内容全部取消(C) 将第二次插入的内容全部取消(D) 两次插入的内容都不被取消你选择的答案:D [错误]正确答案:C解答参考:4. 退出Word 2003 环境的最快方法是单击窗口按钮____ 。
(A)(B)(C)(D)你选择的答案:A [错误]正确答案:D解答参考:5. 在Excel 2003中,假定单元格B2和B3的值分别为6和12,那么公式=2*(B2+B3)的值为______。
(A) 36(B) 12(C) 24(D) 6你选择的答案:C [错误]正确答案:A解答参考:6. 在Excel 2003中,选择一块单元格区域后,假设要实现合并及居中的功能那么最少需要单击格式工具栏中相应的______。
(A) 2个按钮(B) 3个按钮(C) 4个按钮(D) 1个按钮你选择的答案:D [正确]正确答案:D解答参考:7. PowerPoint中,为某一张幻灯片修改设计模板效果的操作方法是_______。
大学英语第四次作业及答案
大学英语第四次作业及答案R2开始时间2013年09月29日星期日09:09完成于2013年09月29日星期日09:35耗时26 分钟7 秒分数20.0/20.0成绩100.0/满分100.0反馈您已完成答题!具体成绩和答案会在测验截至后公布。
窗体顶端题目1正确获得1.0分中的1.0分Flag question题干I was satisfied with her explanation, _________.选择一项:a. so were my classmatesb. so did my classmatesc. so my classmates didd. so my classmates were题目2正确获得1.0分中的1.0分Flag question题干We all thought ____ a pity that you were unable to attend our meeting.选择一项:a. thatb. thisc. itd. which题目3正确获得1.0分中的1.0分Flag question题干When father was young, he ______from morning till night. 选择一项:a. was made workingb. made to workc. was made workd. was made to work题目4正确获得1.0分中的1.0分Flag question题干Would you like something_________ ?选择一项:a. drinkingb. for drinkingc. drinkd. to drink题目5正确获得1.0分中的1.0分Flag question题干What a bad memory I've got! I even forgot ____the book with me. 选择一项:a. takenb. takec. takingd. to take题目6正确获得1.0分中的1.0分Flag question题干The children _______ play with them.选择一项:a. want me forb. want that Ic. want me tod. are wanting that题目7正确获得1.0分中的1.0分Flag question题干The film brought the hours back to me ______ I was taken good care of in that remote village. 选择一项:a. untilb. whenc. thatd. where题目8正确获得1.0分中的1.0分Flag question题干_______ him go out if he wants to.选择一项:a. Letb. Permitc. Leaved. Allow题目9正确获得1.0分中的1.0分Flag question题干I hate the news, _____made us very sad.选择一项:a. whichb. whatc. itd. that题目10正确获得1.0分中的1.0分Flag question题干The reason I didn't go to Canada was _______ a new job. 选择一项:a. how I gotb. that I gotc. because I gotd. why I got题目11正确获得1.0分中的1.0分Flag question题干It was a great pleasure ________ me to be invited to the party. 选择一项:a. forb. toc. ofd. on题目12正确获得1.0分中的1.0分Flag question题干I don't know _______ to deal with such matter.选择一项:a. whatb. whichc. /d. how题目13正确获得1.0分中的1.0分Flag question题干You'd better ______in bed. It's bad for your eyes.选择一项:a. not readb. don't readc. readd. not to read题目14正确获得1.0分中的1.0分Flag question题干Did you notice the guy ______ head looked like a big potato? 选择一项:a. whob. whosec. whomd. which题目15正确获得1.0分中的1.0分Flag question题干After the Minister of Education had finished speaking at the press conference, he was made ____all sorts of awkward questions.选择一项:a. answerb. to answerc. answeredd. answering题目16正确获得1.0分中的1.0分Flag question题干He put forward a theory, _______ of great importance to the progress of science and technology. 选择一项:a. I think it isb. which is I thinkc. I think which isd. which I think is题目17正确获得1.0分中的1.0分Flag question题干Miss Wang wanted to know _______for the film.选择一项:a. why was he lateb. why he was latec. why is he lated. .why he is late题目18正确获得1.0分中的1.0分Flag question题干His salary as a driver is much higher than ________. 选择一项:a. is a porterb. as a porterc. a porterd. that of a porter题目19正确获得1.0分中的1.0分Flag question题干It is the best ______ I have seen.选择一项:a. thatb. whoc. whomd. which题目20正确获得1.0分中的1.0分Flag question题干Don't forget ________ the window before leaving the room. 选择一项:a. to have closedb. to closec. closingd. having closed窗体底端。
《计算机应用基础》1-3次作业
《计算机应用基础》1-3次作业计算机应用基础第1-3次作业作业一:________计算机硬件基础1.1 主板主板是计算机的核心部件,负责连接所有硬件设备和处理器。
1.1.1 常见主板类型●ATX主板:________最常见的主板类型,适用于大多数桌面计算机。
●mATX主板:________小型化的ATX主板,适用于小尺寸计算机壳体。
具有较少的扩展插槽。
●ITX主板:________更小型化的主板,适用于小型电脑和嵌入式系统。
1.1.2 主板组成部分●芯片组:________负责连接处理器、内存和其他设备,在主板上发挥桥梁作用。
●插槽和插座:________用于安装处理器、内存和扩展卡。
●连接器:________连接各种硬件设备,如硬盘、显示器、键盘等。
●BIOS芯片:________存储基本输入输出系统(BIOS)程序,负责启动计算机。
作业二:________操作系统基础2.1 操作系统概述操作系统是计算机系统的核心软件,负责管理计算机的硬件和软件资源,提供用户和计算机之间的接口。
2.2 常见操作系统类型●Windows操作系统:________由微软公司开发,广泛用于个人电脑。
●macOS:________由苹果公司开发,用于苹果电脑。
●Linux:________开源操作系统,适用于各种计算机设备。
2.3 操作系统功能●进程管理:________负责进程的创建、调度和终止。
●内存管理:________管理计算机的内存资源,包括内存分配和释放。
●文件系统:________提供对文件的管理和操作。
●设备管理:________管理计算机的硬件设备,如打印机、网络适配器等。
作业三:________常见应用软件3.1 办公软件办公软件是用于办公任务的软件,包括文字处理、表格计算、幻灯片演示等功能。
3.1.1 Microsoft OfficeMicrosoft Office是一款常用的办公软件套装,包括Word、Excel和PowerPoint等多个组件。
homework_04
Homework 04Student Name: Student No.:Your file name should be: your name_your student number. For example: lucy_123456.docI. Multiple Choice (Select the best answer)1. A(n) __c___ has a design that reduces the chance of wrist and hand injuries.a. gaming keyboardb. cordless keyboardc. ergonomic keyboardd. function key2. Some phones use __a___, where you press one key on the keypad for each letter in a word and software on the phone predicts the word you want.a. predictive text inputb. text messagingc. ergonomicsd. optical character recognition (OCR)3. Touch screens that recognize multiple points of contact at the same time are known as __b___.a. touch-sensitive padsb. multi-touchc. graphics tabletsd. digitizers4. Architects, mapmakers, designers, artists, and home users create drawings and sketches on a __c___.a. trackballb. terminalc. graphics tabletd. touchpad5. __d___ is the computer’s capability of distinguishing spoken words.a. Voice inputb. VoIPc. MIDId. Voice recognition6. ___c__ allows users to record, compose, mix, and edit music and sounds.a. Kiosksb. Voice inputc. Music production softwared. Voice recognition7. RFID is a technology that uses __c___ to communicate with a tag placed in or attached to an object, an animal, or a person.a. a thin wireb. pixelsc. radio signalsd. light waves8. With ___c__, the computer will detect human motions.a. a head-mounted pointerb. an on-screen keyboardc. gesture recognitiond. a computerized implantII. Short Answer (Write a brief answer to each of the following questions)1.What are three different types of mouse devices?Optical mouse, laser mouse and wireless mouse.What makes them different from each other?An optical mouse uses devices that emit and sense light to detect the mouse’s movem ent. A laser mouse uses a laser and is more expensive than an optical mouse. An air mouse allows you to control objects, media players, and slide shows by moving the mouse in predetermined directions through the air. A wireless mouse, or cordless mouse, transmits data using wireless technology. at least five mouse operations.Point,click,right-click,double-click and triple click.Describe and give examples of each of the mouse operations that you chose.PointMove the mouse until the pointer on the desktop is positioned on theitem of choice.Example:position the pointer on the screen.ClickPress and release the primary mouse button, which usually is the leftmouse button.Example:select or deselect items on the screen orstart a program or program feature.Right-clickPress and release the secondary mouse button, which usually is the rightmouse button.Example:display a shortcut menu.Double-clickQuickly press and release the left mouse button twice without movingthe mouse.Example:start a program or program feature.Triple-clickQuickly press and release the left mouse button three times withoutmoving the mouse.Example:select a paragraph.3.What is OCR (optical character recognition)?It is software that enables scanners to read and convert text documents into electronic files.What is OMR (optical mark recognition)?It is optical reader technology that reads hand-drawn marks such as small circles or rectangles.4. What is the most widely used biometric device today?The most widely used biometric device today is a fingerprint reader.Describe how the device works.It captures curves and indentations ofa fingerprint (Figure 5-37). The reader can beset up to perform different functions for dif-ferent fingers.4.What is the Americans with Disabilities Act (ADA)?It is federal law that requires any company with 15 or more employees to make reasonable attempts to accommodate the needs of physically challenged workers.How might gesture recognition and computerized implant devices help physically challenged users in the future?Both in the prototype stage, they attempt to provide users with a natural computer interface. With gesture recognition, the computer will detect human motions. Computers with gesture recognition capability have the potential to recognize sign language, read lips, track facial movements, or follow eye gazes. For paralyzed or speech impaired individuals, a doctor will implant a computerized device into the brain. This device will contain a transmitter. As the user thinks thoughts, the transmitter will send signals to the computer.III. True/False (Mark T for True and F for False)__T___ 1. Once data is in memory, the computer interprets and executes instructions to process the data into information.___T__ 2. An input device is any hardware component that allows users to enter data and instructions into a computer.___F__ 3. The command associated with a function key performs the same task within each program with which you are interacting.___T__ 4. A touchpad is a small, flat, rectangular pointing device that is sensitive to pressure and motion.___T__ 5. Touch-sensitive pads typically contain buttons and/or wheels that are operated with a thumb or finger.___F__ 6. To capture a signature, a user speaks his or her name into a signature capture pad.___F__ 7. Resolution is the smallest element in an electronic image.___F__ 8. A whiteboard is a meeting between two or more geographically separated people who use a network or the Internet to transmit audio and video data.___F__ 9. Scanners capture data from a target document, which is the original form of the data.___T__ 10. A flatbed scanner works in a manner similar to a copy machine except it creates a file of the document in memory instead of a paper copy.___T__ 11. A DVD kiosk is a self-service DVD rental machine that connects to a host computer through a network.___T__ 12. A keyguard is a metal or plastic plate placed over the keyboard that allows users to rest their hands on thekeyboard without accidentally pressing any keys.。
(精华版)国家开放大学电大《C语言程序设计》网络课形考网考作业及答案
(精华版)国家开放大学电大《C语言程序设计》网络课形考网考作业及答案(精华版)国家开放大学电大《C语言程序设计》网络课形考网考作业及答案100%通过考试:2022年秋期电大把该网络课纳入到“国开平台”进行考核,该课程共有4个形考任务,针对该门课程,本人汇总了该科所有的题,形成一个完整的标准题库,并且以后会不断更新,对考生的复习、作业和考试起着非常重要的作用,会给您节省大量的时间。
做考题时,利用本文档中的查找工具,把考题中的关键字输到查找工具的查找内容框内,就可迅速查找到该题答案。
本文库还有其他网核及教学考一体化答案,敬请查看。
课程总成绩=形成性考核某50%+终结性考试某50%形考任务1一、选择题〔共40分,每题2分〕题目1在每个C语言程序中都必须包含有这样一个函数,该函数的函数名为〔〕。
选择一项: A.main恭喜你,答对啦!!题目2C语言源程序文件的缺省扩展名为〔〕。
选择一项: D.c题目3由C语言目标文件连接而成的可执行文件的缺省扩展名为〔〕。
选择一项: B.e某e题目4程序运行中需要从键盘上输入多于一个数据时,各数据之间应使用的分隔符为〔〕。
选择一项: D.空格或回车题目5每个C语言程序文件的编译错误被分为〔〕。
选择一项: B.2类题目6不符合C语言规定的复合语句是〔〕。
选择一项: D.{y=10}题目7C语言程序中的根本功能模块为〔〕。
选择一项: D.函数题目8在一个函数定义中,函数头包括的3个局部依次为函数类型、函数名和〔〕。
选择一项: C.参数表题目9在一个程序文件中,假设要使用#include命令包含一个用户定义的头文件,那么此头文件所使用的起止定界符为一对〔〕。
选择一项: B.双引号题目10在C语言程序中,多行注释语句使用的开始标记符为〔〕。
选择一项: B./某题目11在printf()函数调用的格式字符串中,假设使用格式符为“%c”,那么对应输出的数据类型为〔〕。
选择一项: A.char题目12在printf()函数调用的格式字符串中,假设使用格式符为“%5d”,那么规定对应输出的数据占用的字符位置个数为〔〕。
“PEP”2024年小学四年级上册第4次英语第四单元暑期作业(含答案)
“PEP”2024年小学四年级上册英语第四单元暑期作业(含答案)考试时间:80分钟(总分:140)A卷考试人:_________题号一二三四五总分得分一、综合题(共计100题共100分)1. 选择题:What do we call the first meal of the day?A. LunchB. DinnerC. BreakfastD. Snack2. 填空题:I like to collect _______.3. 选择题:What do you call a person who studies animals?A. BiologistB. ZoologistC. EcologistD. Ornithologist4. 填空题:Plants can help us learn about ______ (科学).5. 听力题:I have a ______ for math. (test)6. 选择题:What type of animal is a dolphin?A. FishB. AmphibianC. MammalD. Reptile答案: CA snake can be very ______.8. 选择题:What is the term for a person who is trained to treat animals?A. VeterinarianB. DoctorC. ZookeeperD. Biologist答案:A9. 听力题:A _______ is a measure of how much energy is needed to change temperature.10. 选择题:What do you call a young seal?A. PupB. KitC. CalfD. Cub11. 填空题:My cousin lives in ____.12. 选择题:What do you call a person who teaches students?A. DoctorB. TeacherC. ChefD. Engineer答案:B13. 听力题:The chemical symbol for silver is ______.14. 填空题:My sister has a __________ (可爱的) smile.15. 选择题:What do we call a collection of stars?A. GalaxyB. UniverseC. PlanetariumD. Solar System答案:AWe can _______ (一起) do yoga.17. 选择题:What do we call a person who cleans houses?A. GardenerB. CleanerC. ChefD. Mechanic18. 填空题:The _______ (The Berlin Conference) divided Africa among European powers.19. 填空题:My backpack is filled with ______.20. 听力题:The chemical formula for nitrogen trioxide is _______.21. 听力题:The ________ (experience) was unforgettable.22. 填空题:In the evening, I help my mom ________ (做饭). We prepare a delicious ________ (晚餐) together.23. 填空题:A dolphin can recognize itself in a ________________ (镜子).24. 选择题:What do we call a large, flying bird?A. SparrowB. EagleC. PenguinD. Ostrich25. 听力题:The __________ is the measure of how much solute is dissolved in a solution.26. 听力题:She loves to _____ (dance/sing) at parties.27. 听力题:The flowers smell _____ (sweet/bad).The boy likes ________.29. environmental awareness) promotes stewardship. 填空题:The ____30. 填空题:My friend enjoys _______ (动词) on weekends. 她的活动很 _______ (形容词).31. 听力题:We eat ______ (breakfast) in the morning.32. 填空题:The __________ (历史的动力) often comes from change.33. 听力题:My sister enjoys listening to ____ (music) while studying.34. 填空题:A _____ (蝙蝠) can fly at night and uses echo location.35. 填空题:In school, we have a library where we can borrow ______ (书籍). I love discovering new stories.36. 选择题:What is the name of the famous explorer who sailed across the Pacific?A. Ferdinand MagellanB. Christopher ColumbusC. Vasco da GamaD. James Cook37. 填空题:The _______ (鸽子) coos softly.38. 选择题:What do we call a person who makes bread?A. BakerB. ButcherC. ChefD. Cook39. 填空题:A _____ (果树) produces fruit each year.40. 选择题:What do you wear on your head?A. ShoesB. HatC. ShirtD. Pants41. 填空题:The sea horse is a unique _______ (生物).42. 填空题:The ________ is known for its beautiful feathers.43. 听力题:I see a _____ (朋友) at the coffee shop.44. 填空题:________ (生态系统动态) guide conservation.45. 听力题:We are _______ (going) to a concert.46. 听力题:An animal that eats only plants is called a ______.47. 听力题:The freezing point of water is _____ degrees Celsius.48. 填空题:My sister enjoys __________ (科学实验).49. 填空题:We have a ______ (丰富的) schedule filled with activities.50. 听力题:The __________ is a feature of deserts.51. 小狼) runs fast in the wild. 填空题:The ___52. 听力题:The playground is ___ (fun) to play in.53. 选择题:Which is the largest planet in our solar system?A. EarthC. SaturnD. Mars答案:B. Jupiter54. 选择题:What is the capital city of Kazakhstan?A. AlmatyB. Nur-SultanC. ShymkentD. Aktobe55. 选择题:What do we call a baby cow?A. CalfB. KitC. LambD. Foal答案:A56. 听力题:The book is on the ___ (table).57. 填空题:The _____ (四季变化) influences plant life cycles.58. 听力题:Jupiter has a famous storm called the Great _______ Spot.59. 听力题:Heat can make things ______ (expand).60. 听力题:A solution is a mixture where one substance ______ in another.61. 选择题:What is the name of the famous festival celebrated in India?A. ChristmasB. DiwaliC. HalloweenD. Thanksgiving答案:B62. 选择题:What do you call a place where you can see art?A. LibraryC. TheaterD. Park答案: B63. 填空题:My sister likes to sing __________. (歌曲)64. 填空题:My brother is a _____ (学生) who excels in math.65. 听力题:The process of ______ involves the gradual breakdown of rocks.66. 听力题:The ocean is _____ (deep/shallow).67. 填空题:The __________ is a large forest in Germany. (黑森林)68. 填空题:A zebra's stripes help it confuse ________________ (捕食者).69. sustainable development) meets present needs without harming future generations. 填空题:The ____70. 选择题:What do you call a baby alligator?A. HatchlingB. PupC. CalfD. Kit答案: A71. 听力题:I wear _____ (耳环) for special occasions.72. 选择题:What do you call the fear of heights?A. AcrophobiaB. ClaustrophobiaC. AgoraphobiaD. Nyctophobia答案:AThe _______ (青蛙) croaks loudly at night.74. 选择题:What is the capital of Spain?A. BarcelonaB. MadridC. ValenciaD. Seville答案: B75. 听力题:Chemical properties describe how a substance interacts with other ________.76. 听力题:The chemical formula for decanoic acid is ______.77. 选择题:What do you call the process of a seed growing into a plant?A. GerminationB. PhotosynthesisC. PollinationD. Fertilization答案:A78. 听力题:A catalyst is not consumed in a ______ reaction.79. 听力题:The __________ is known for its beautiful sunsets.80. 填空题:I love to _______ (写) letters to my friends.81. 选择题:What do you call the first book in the Bible?A. GenesisB. ExodusC. LeviticusD. Numbers答案:A82. 填空题:She is a dancer, ______ (她是一位舞者), and performs on stage.A _______ (小松鼠) hoards food for winter.84. 听力题:I want to ________ my friends.85. ts are known for their ______ leaves, which can trap moisture. (一些植物以其厚重的叶子而闻名,这些叶子可以捕捉水分。
英语作业第四次
您的本次作业分数为:97分词汇与结构20131.【第四次】The young _______ eaten up almost everything on the table.A isB areC hasD have正确答案:D词汇与结构20132.【第四次】As his personal secretary, I have ______ to his office.A wayB systemC advanceD access正确答案:D词汇与结构20133.【第四次】When Lily came home at 5 pm yesterday, her mother ______dinner in the kitchen.A cookedB was cookingC cooksD has cooked正确答案:B词汇与结构20134.【第四次】Selecting a mobile phone for personal use is no easy task because technolgy ___so rapidly.A is changingB has been changedC will have changedD will change词汇与结构20135.【第四次】For a ______ of reasons, our team will not be participating in the upcoming match.A differenceB varietyC communityD branch正确答案:B词汇与结构20136.【第四次】A woman came in, ______ by her daughter.A followedB followingC followD being followed正确答案:A词汇与结构20137.【第四次】--What will you buy for your boyfriend’s birthday? --I want to buy a ______ wallet for him.A black leather smallB small black leatherC small leather blackD black small leather正确答案:B词汇与结构20138.【第四次】It is the best ____________ I have seen.A thatB whoC whomD which词汇与结构20139.【第四次】I prefer classic music ___ pop music.A thanB onC withD to正确答案:D词汇与结构201310.【第四次】What is the train ___________ to Birmingham?A feeB tripC fareD cost正确答案:C词汇与结构201311.【第四次】This is George, ______ class you will be taking.A whoseB whomC whoD his正确答案:A词汇与结构201312.【第四次】The reporters had to fight each other for a chance to ______ the famous singer.A instructB questionC interviewD invest词汇与结构201313.【第四次】On average, a successful lawyer has to talk to several ________ a day.A customersB supportersC guestsD clients正确答案:D词汇与结构201314.【第四次】As the bus came round the corner, it ran ________ a big tree by the roadside.A intoB onC overD up正确答案:A词汇与结构201315.【第四次】A: Must we finish the work right now? B: No, you ________. You can do it tomorrow.A needn’tB shouldn’tC mustn’tD can’t正确答案:A交际英语201316.【第四次】--What would you like to have, meat or fish? --____________________________________.A Either will doB Yes, I like meatC Yes, I like fishD No, they are not my favorite正确答案:A交际英语201317.【第四次】--I can't repair your recorder until tomorrow, I'm afraid.--That's OK, there's _______.A no problemB no wonderC no doubtD no worry正确答案:A交际英语201318.【第四次】--Could you tell us where the post office is? --______A No, I am busy.B Sorry, I am new to the city too.C It is not next to the hospital.D You can buy a map.正确答案:B交际英语201319.【第四次】--Could you be so kind as to turn down that rock "n" roll? I am preparing for tomorrow's exam. --________.A It’s none of your business.B What are you doing?C Sure. Sorry to disturb you.D No, I don’t think so.正确答案:C交际英语201320.【第四次】--Susan is absent from today's writing class. --____. As far as I know she has never missed a class.A How come?B So what?C Why?D What for?正确答案:A完型填空201321.【第四次】One night, a thief broke into an old man's house. He ___1___ a noise and woke up the old man and his wife. The husband told his wife to be silent, while he said loudly, "My dear, these days thieves are cleverer. If they take ___2___ their clothes and put them on the table, the people in the room will fall asleep and can't wake up." When the thief ___3___this, he took off his clothes at once and was ready to set out to work. At this___4___, the husband suddenly shouted in a loud voice:"Stop thief! Stop thief!" The thief was very frightened. He ran away as fast as be could and ___5___ his clothes on the table.1.A:made B:moment C:off D:left E:heard2.A:made B:moment C:off D:left E:heard3.A:made B:moment C:off D:left E:heard4.A:made B:moment C:off D:left E:heard5.A:made B:moment C:off D:left E:heard正确答案:1-A, 2-C, 3-E, 4-B, 5-D阅读理解201422.【第四次】Mr. Tom Forester lived by himself a long way from town. He hardly left his home, but one day he went into town to buy some things in the market. After he had bought them, he went into a restaurant and sat down at a table by himself. When he looked around, he saw several old people put glasses on before reading their newspapers. So after lunch he decided to go to a shop to buy himself some glasses too. He walked along the road, and soon found a shop. The man in the shop made him try on a lot of glasses, but Tom always said, "No, I can't read with these."The man became more and more puzzled (迷惑的) , until finally he said, "Excuse me, but can you read?""No, of course I can't!" Tom said angrily. "If I was already able to read, do you think I would have come here to buy glasses?"A with his family in a cityB with his family in the countrysideC alone in a cityD alone in the countrysideA oftenB alwaysC almost neverD everydayA with glasses onB with glasses offC with glasses of beer in front of themD with glass pipes in their mouthsA drinking glasses and cupsB glass for windows and doorsC glasses for people who could not readD glasses for people who could not see wellA He went to the wrong kind of shop.B He didn’t try on all the glasses in the shop.C He thought that a person who had not learned to read would be able to do so if he wore glasses.D He left his money in the restaurant.正确答案:1-D, 2-C, 3-A, 4-D, 5-C阅读理解201423.【第四次】Sixteen-year-old Maria was waiting in line at the airport in Santo Domingo. She was leaving her native country to join her sister in the United States. She spoke English very well. Though she was very happy she could go abroad, she was feeling sad at leaving her family and friends. As she was thinking all about this, she suddenly heard the airline employee asking her to pick up her luggage and put it on the scales (称). Maria pulled and pulled. The bag was too heavy and she just couldn't lift it up. The man behind her got very impatient. He, too, was waiting to check in his luggage."What's wrong with this girl?" He said, "Why doesn't she hurry up?" He moved forward and placed his bag on the counter, hoping to check in first. He was in a hurry to get a good seat. Maria was very angry, but she was very polite. And in her best English she said, "Why are you so upset? There are enough seats for everyone on the plane. If you are in such a hurry, why can't you give me a hand with my luggage?"The man was surprised to hear Maria speak English. He quickly picked up her luggage and stepped back. Everyone was looking at him with disapproval.A: T B: FYou believe that the work of the airline employee mentioned in the story is to check people's luggage at the airport.A: T B: Fshould not be unhappy and worried.A: T B: F"Everyone was looking at him with disapproval."This sentence means that thepeople around felt sorry for Maria's manners. A: T B: Fthat she was young but behaved properly.A: T B: F正确答案:1-B, 2-A, 3-A, 4-B, 5-A。
英语第4次作业
英语第4次作业本次作业是本门课程本学期的第4次作业,注释如下:大学英语i第4单元作业题一、单项选择题(只有一个选项正确,共40道小题)1.―howaboutgoingroller-skatingtogether?―_______________[本题2分](a)oh,no.(b)sorry,ican‘t.(c)抱歉,但不要觉得这是错误的。
(d)我看到了。
你选择的答案:c[正确]正确答案:c答案参考:[4单元]C问题d一起滑旱冰怎么样回答d抱歉,我不喜欢更符合上下文和更有礼貌的滑旱冰。
2.―doyouwanttowatchafootballmatchbetweenchinaandjapanoncctv-5thisafternoon?―_______________. 我正在打篮球。
(a)不,我没有(b)sorry,i‘mnotafootballfan.(c)itismyhobby.(d)that‘smyfavorite.你选择的答案:b[正确]正确答案:b你想看今天下午中央电视台第五台播出的中日足球赛吗?虽然它可以完成对话,但没有显得太直率。
这不像b项中的抱歉那么温柔和礼貌。
D抱歉,我不是一个足球迷。
我更喜欢打篮球3.―______________―我没有。
我最喜欢的运动是慢跑。
我不喜欢玩游戏。
[这个问题得2分](a)areyouinterestedinfootball?(b)footballismyhobby.(c)youareinterestedinjoggin g.(d)whichisyourfavoritesport?你选择的答案:a[正确]正确答案:a答案是D,不是。
我最喜欢的运动是慢跑。
我不喜欢球类运动。
你喜欢足球吗。
4.―whatdoyoulikedoing?―_______________[本题2分](a)我喜欢聊天。
(b)ihopeicanchatwithyou.(c)i‘mnotfondofpopmusic.(d)我在网上聊天,听音乐。
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作业 4
1、输入一个正整数n,再输入n个学生的成绩,计算平均分,并统计不及格成绩的个数。
#include "stdio.h"
#include "conio.h"
main()
{ int Failed,i,n;
float Mark,Sum;
printf("Please input n:");
scanf("%d",&n);
Failed=Sum=0;
for(i=1;i<=n;i++)
{
printf("Please input Mark %d:",i);
scanf("%f",&Mark);
Sum=Sum+Mark;
if(Mark<60)
Failed++;
}
printf("aver=%f\n",Sum/n);
printf("Failed=%d\n",Failed);
getch();
}
.
2、输入一个职工的月薪salary,输出应交的个人所得税tax(保留两位小数)。
计算方法:tax=rate(salary-850)/100
当salary≤850时,rate=0;
当850 <salary≤1350时,rate=5;
当1350 <salary≤2850时,rate=10;
当2850 <salary≤5850时,rate=15;
当5850 <salary时,rate=20;
#include "stdio.h"
#include "conio.h"
main()
{ double money,rate,Tax;
printf("Please input money:");
scanf("%lf",&money);
if(money<=850)
rate=0;
else if(money<=1350)
rate=5;
else if(money<=2850)
rate=10;
else if(money<=5850)
rate=15;
else
rate=20;
Tax=rate*(money-850)/100 ;
printf("Tax=%.2f",Tax);
getch();
}。