西南交大网络教育英语1-5次离线作业作业(四线三格)

西南交大网络教育英语1-5次离线作业作业(四线三格)
西南交大网络教育英语1-5次离线作业作业(四线三格)

大学英语III第1次作业(离线作业)

41. Directions: For this part, you are allowed 30 minutes to write a composition on the topic “How to Keep Healthy”. You should write no less than 80 words.

How to Keep Healthy

People are beginning to attach much more importance to their health these days than ever before. They begin to realize that good healthis the most valuable possession a person can have. However, many people don't know how to stay healthy although great efforts have been made in this regard. In my opinion, there are three things we can do if we want to be in good.

First, we should have the right food, because proper nutrition is the most important for good health. Avoid foods with lots of sugar and fat. Eat plenty of high protein foods, vegetables and fruits. Do not overeat. Secondly, we should get proper amount of sleep, because without enough sleep, we will often feel tired and irritable. Allow ourselves at least eight hours of sleep each day. Have a nap at noon if time permits.

Finally, we should exercise regularly, because'life depends on exercise'. Regular exercise strengthens our hearts andlungs. In addition, it prevents us from putting on weight.

If everyone is to do so, there will be much less complaining about poor health and there will be much more happiness in our life.

大学英语III第2次作业(离线作业)

41. Directions: For this part, you are allowed 30 minutes to write a composition on the topic “My Favorite Season”. You should write no less than 80 words.

Summer

I like summer best!In summer,the weather is sunny and hot.I can eat my favourite food—ice creams!I'm very happy!I like swimming in the pool with my friends.In summer,the flowers are beautiful,the grss is very green.I can have a picnic with my parents.And we have fun!

I like summer best!Do you like it,too?SummerOf all the four seasons,I love summer most.Firstly, summer is my most favourite season because the longest vacations of the year are

in summer.I can have a lot of fun during summer vacations, include of camping with friends and family members, going to the beach or swimming at public pools, traveling and sightseeing locally and nationally. Secondly, summer is a pleasant season for all kinds of cold foods and juicy fruits. Ice cream is our all time favourite dessert. Yeh, I love ice cream so much. I have to eat some ice cream almost everyday in summer. There are a lot of fresh fruits selling everywhere. Watermelon is proudly rated to be the most demanding fruit in the season. All kinds of iced drinks are greatly demanded in summer.

My favorite season is spring. When spring comes. Snakes wake up. They find their tasty food. White rabbits run on the grass. Many fish are in the river. Spring is beautiful and green. In spring, the air is fresh, the sky is blue, the clouds are white. I often wear a red sweater and blue jean. I can fly kites on the green grass. In March we can plant trees. In spring, the weather is always sunny and warm, usually I go shopping. Sometimes I go hiking and climb mountains.

I like spring.My Favourate Season How glad I am that summer has come! I like summer best because I can have a very happy time then. Every summer I stay at my uncle's house in the country for some time and enjoy the life there. I can also catch worms that are not found in cities. In addition, we can see many kinds of birds. I think the country is certainly a better place than the city for vacation. Summer is my favourite season.

大学英语III第3次作业(离线作业)

41. Directions: For this part, you are allowed 30 minutes to write a composition on the topic “Private Cars”. You should write no less than 80 words.

Private Cars

Nowadays more and more families own private cars. Private cars, as the product of modem civilization, have been playing a vital role in people's daily activities. First, private cars are a convenient means of transportation. You can go wherever you like. Secondly, there is no doubt that private cars will have a great impact on the economic growth. The rapid car

industry growth will contribute much to keeping the country's economy growing at a higher rate in the near futrue.

But every coin has two sides. The development of the private cars will bring about a series of problems. For example, the polluted air given off by cars will do great harm to our health, too many private cars will lead to traffic jams and a great deal of energy will be wasted and so on.

So I think we should take advantages of private cars and make them serve us better. Meantime we hope that satisfactory solutions to these negative problems will be found soon.

大学英语III第4次作业(离线作业)

41. Directions: For this part, you are allowed 30 minutes to write a composition on the topic “A City to Remember”. You should write no less than 80 words.

an unforgettable day

Today I found time was a cruel thing. Whatever man is, time always goes on. It won’t stay to wait for somebody. You can’t use anything to exchange time. Time is also a fair thing.

Although you have a lot of money or you enjoy high reputation, time won’t leave them more. Today I found I hadn’t enough time. Although I have more than a-month holiday, but I found I had a lot of things to do. I had a lot of homework to do and I am essential to complete the homework as soon as I have time.

大学英语III第5次作业(离线作业)

41. Directions: For this part, you are allowed 30 minutes to write a composition on the topic “Online Shopping”. You should write no less than 80 words.

Online Shopping

Nowadays with the ever rapid development and increasingpopularity of the information technology ,shopping on the internet has been a fashion especially among the youngsters.

Online shopping has made our daily life more convenient and comfortable. For example ,shopping on the internet can save students a great deal of time on the way between home and store,so they would be able to concentrate more time and energy on theiracademic work. The internet has shorten

the distance between manufacturers and consumers and thus we can even buy goods in other countries .On the other hand ,lack of the face to face deal makes online shopping less reliable and trustworthy. What’ s more the delivery will increase the risk of items’ damage.

In my opinion,shopping on the internet is a irreversible trend. More and more people will be accustomed to it. It will be much more popular in the near future. And at the same time we should take some measures to make it perfect.

西南交大-大学英语3-离线作业

2013—2014学年第一学期 离线作业 科目:大学英语III 姓名:李冬军 学号: 1524582 专业:车辆工程2015-26班(专本) 西南交通大学网络教育学院 直属学习中心

大学英语III第1次作业主观题 Directions: For this part, you are allowed 30 minutes to write a composition on the topic “How to Keep Healthy”. You should write no less than 80 words. What is the most important thing in the world? I think it is health. You can take away our money, house, car, or even our clothes and we can survive. But if our health was taken away, we would surely die. That is why we always try to eat in a healthy way and exercise regularly. What's more, I think friends are an important part of one's health. Many studies show that people with a wide range of social contacts get sick less than those who don't. I always feel better when I am with friends than when I am alone. When I am with my friends, I always laugh. Laughing is also an important part of health. I like to laugh with my friends. By eating properly and exercising regularly, I can keep my body at a proper weight and keep healthy. By spending time with my friends, I can keep my mind as well as my body happy. These things sound easy to do, but not many people can manage them. I think a strong will is necessary if we want to keep healthy.

西南交大远程教育之数字电路

第一次 15.试根据真值表给出输入输出(输入为AB 输出为Y)的逻辑关系,在表内的空格处填上相应逻辑门的名称。 答:或非、与、异或、或 16.二进制计算:0011+1011= ,1100 –0101= 。 答:10100(最高位是进位)、11111(最高位是借位) 17.逻辑函数的最小项之和表达式= =∑m(),其最简与-或表达式为。 答:,∑m(1,3,4,5), 18.n个变量的逻辑函数有________个最小项,任意两个最小项的乘积为_________,所有最小项之和为_________。 答:2n 、0、1 19.用卡诺图法化简下列各式 (1) (2) (3) (4) (5) 答: 解:(1) (2) (3)

(4) (5) 第二次 6.求出图4.6(a)、(b)所示电路输出F的逻辑表达式。 图4.6(a)图4.6(b) 答: .解:图4.6(a)的输出逻辑表达式: 图4.6(b)的输出逻辑表达式: 7.写出图4.7所示电路输出F的逻辑表达式。 答: 解:图4.7的输出逻辑表达式: 8.试用8-1数据选择器74151组成三输入信号的奇偶校验电路。当输入信号中1的个数为偶数时,输出为1,否则输出为0。设输入为 A、B、C,输出为F。要求完成以下各项: (1)列出真值表;(2)写出函数表达式;(3)画出逻辑电路图。 答: 解:(1

0 0 0 1 0 0 1 0 0 1 0 0 0 1 1 1 1 0 0 0 1 0 1 1 1 1 0 1 1 1 1 0 74151 E 1 F (2)输出逻辑表达式: (3)电路图 9.试设计一个监视交通信号灯工作状态,逻辑电路正常工作时,任何时刻必须有一盏灯亮,而其他情况均为电路发生故障,这时要求能发出故障信号。用1个3-8译码器74138和必要的门实现,画出逻辑电路图。 答: 解:设R,Y,G分别表示红,黄,绿三个灯的状态,为1时表示灯亮; F为输出的故障信号,电路发生故障时F=1,否则F=0。 R Y G F 0 0 0 1 0 0 1 0 0 1 0 0 0 1 1 1 1 0 0 0 1 0 1 1 1 1 0 1 1 1 1 1 输出函数表达式为: 将R,Y,G分别接74138的A2,A1,A0,则:

大学英语II第三次作业(西南交大)

一、单项选择题(只有一个选项正确,共40道小题) 1. –What time is it? –____________________. (A) My watch keeps good time (B) My watch is five minutes fast (C) My watch says three o’clock (D) I say three o’clock 正确答案:C 解答参考:[第三单元] 本题问句是“现在几点钟”,C项“我的表是三点钟”。A项“我的表走时准确”,B项“我的表快五分钟”,D项“我说是三点钟”都不符合习惯表达法。 2. –Could you tell me the time, please? –____________________. (A) Yes, I can (B) No, I can’t (C) It’s four thirty (D) It’s Friday 正确答案:C 解答参考:[第三单元]C 本题仍是问时间,回答应该直接告诉对方时间,故C项正确。 3. –What day is tomorrow? –Today is Tuesday. So it’s________. (A) Monday (B) Wednesday (C) Thursday (D) Saturday 正确答案:B 解答参考:[第三单元]B 本题问“明天是星期几”,回答“今天是星期二,所以明天是星期三”。 4. –When is your birthday? –____________________. (A) It’s April 18th (B) It’s Sunday (C) It’s August

西南交大-大学英语II-第1-5次作业

2015—2016第二学期 离线作业 科目:大学英语II 姓名:金宇 学号: 专业:铁道工程技术 2015-48班(高专) \ 西南交通大学远程与继续教育学院 直属学习中心

Directions: For this part, you are allowed 30 minutes to writ e a composition on the topic “My Favorite Sport”. You shou ld write no less than 80 words. I like doingsports very much, such as running, skating, swimmin g and so on.But playing basketball is my favorite . Playing basketball can make me stronger and stronger. And keepi ng playing it can make my basketball skills better. Playing basketb all is not only very interesting but also helps me make many friend s . I don't forget when I was very young my father sent me a basketb all as my bithday gift and he taught me how to play it. From then o n I loved playing basktball very much. I also enjoy watching NB A games on TV and Kobe Bryant is my favorite baskteball playe r. I hope I can have a chance to see an NBA game in person . I wi sh I can play basketball with Kobe Bryant one day .

西南交大网教大学英语IV离线作业全答案

《大学英语IV》第1次作业 ***(学号:********) 41. Directions: For this part, you are allowed thirty minutes to write a composition on the topic “My I deal Job”. You should write no less than 100 words. My ideal job is to be able to work this morning, 9:00, 5:00 pm from work, there is a bright and spa cious office, there is a beautiful female secretary, wages 20,000 yuan, from time to time and then s ent some incentive shuttle bus to and from workthe weekend to rest without overtime, and can be paid leave, five insurance payments, on the whole, God, I'm not dreaming. 《大学英语IV》第2次作业 ***(学号:********) 41. Directions: For this part, you are allowed thirty minutes to write a composition on the topic “My Favorite Means of Getting Information”. You should write no less than 100 words. My favorite means of access to information on the network, the network information very broad c overage, has a collection of all walks of life, the search method is very simple, with a computer ca n sit at home, do not have to run between the Library. But the search also requires skill, such as ke ywords, search keywords is incorrect, it will affect the search results. 《大学英语IV》第3次作业 ***(学号:********) 41. Directions: For this part, you are allowed thirty minutes to write a composition on the topic “H ealth and Wealth”. You should write no less than 100 words, and base your composition on the o utline given below. 1) 有人认为健康重要,而有人认为财富重要; 2) 你的观点。 If you have a day in front of the health and wealth of trade-offs, I would not hesitate to choose hea lthy, alive in my mind is the greatest wealth, only to have a strong physique, we are better able to e njoy, if webody as a whole by the disease plagued, even if there is no amount of money, what with

西南交大网络教育学院《高电压技术》第1~4次作业

《高电压技术》第1~4次作业 本次作业是本门课程本学期的第1次作业,注释如下: 一、单项选择题(只有一个选项正确,共10道小题) 1. 国际电工委员会(IEC)和我国国家标准规定,标准雷电冲击电压波为:________。 (A) 1.2/50μs (B) 1.2/2~5μs (C) 100/2500μs (D) 500/2500μs 你选择的答案: A [正确] 正确答案:A 解答参考: 2. 流注理论未考虑的现象。 (A) 碰撞电离 (B) 表面电离 (C) 光电离 (D) 空间电荷对电场的影响 正确答案:B 解答参考: 3. 稍不均匀电场中不可能存在稳定的电晕放电,一旦出现局部放电,即导致整个气隙的击穿,它的冲击系数。 (A) 远大于1 (B) 约等于1 (C) 远小于1 (D) 不确定 正确答案:B 解答参考: 4. 任何电介质都不同程度地具有一定的导电性能,表征电介质导电性能的主要物理量是。 (A) 介电常数 (B) 电导率

(C) 介质损耗 (D) 击穿电场强度 正确答案:B 解答参考: 5. 局部放电的监测方法中,不属于非电监测方法的是。 (A) 噪声检测法 (B) 介质损耗法 (C) 光检测法 (D) 化学分析法 你选择的答案: B [正确] 正确答案:B 解答参考: 6. 随着输电线路长度的增加线路的波阻抗将。 (A) 不变 (B) 增大 (C) 减小 (D) 可能增大也可能减小 你选择的答案: A [正确] 正确答案:A 解答参考: 7. 波在线路上传播,当末端短路(接地)时,以下关于反射描述正确的是。 (A) 电流为0,电压增大一倍 (B) 电压为0,电流增大一倍 (C) 电流不变,电压增大一倍 (D) 电压不变,电流增大一倍 正确答案:B 解答参考: 8. 220kV输电线路应有的耐雷水平是_________。 (A) 20~30kA

西南交大网络教育《大学英语Ⅲ》主观题离线作业(打印)

Directions: For this part, you are allowed 30 minutes to write a composition on the topic “How to Keep Healthy”. You should write no less than 80 words.

Directions: For this part, you are allowed 30 minutes to write a composition on the topic “My Favorite Season”. You should write no less than 80 words.

Directions: For this part, you are allowed 30 minutes to write a composition on the topic “Private Cars”. You should write no less than 80 words.

Directions: For this part, you are allowed 30 minutes to write a composition on the topic “A City to Remember”. You should write no less than 80 words.

Directions: For this part, you are allowed 30 minutes to write a composition on the topic “Online Shopping”. You should write no less than 80 words.

西南交大大学英语I-第4次作业题答案

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5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. –What do you think I should do? – _________________ (A) I don’t know. (B) That’s not my business. (C) You must talk with him. (D) You’d better talk with him. 你选择的答案: D [正确] 正确答案:D 解答参考:[第五单元]D 当对方问你建议时,你应该委婉地提出自己的看法。你可以表示You’d better … 而不是粗暴地拒绝或是说你“必须”如何 2. –What about going shopping together? – _________________ (A) It sounds good. (B) I prefer go alone. (C) I am occupied. (D) I have no time. 你选择的答案: A [正确] 正确答案:A 解答参考:[第五单元] A 当对方建议一起做某事,你不能参与,可以先表示歉意。你能够参与,可以说 It sounds good 说明你很感兴趣 3. –If you were in my position, what would you do? – _________________ (A) Hi! It’s you problem. (B) I weren’t you. (C) If I were you, I would give up. (D) I don’t know. 你选择的答案: C [正确] 正确答案:C 解答参考:[第五单元]C 当对方问“要是你是我,你会怎么办?”的时候,如果你有建议,则可以说 If I were you, I would… 如果你也不知如何是好,则可以说Sorry, I don’t know 4. –I can’t sleep well recently. – _________________ (A) Me, too. (B) You work too hard. (C) Why don’t you talk to your doctor? (D) Why bother? 你选择的答案: C [正确]

西南交大网络教育《计算机绘图A》期末考试

《计算机绘图A》 一、单项选择题 1. 世界坐标系原点的位置,将(C)由LIMITS命令对绘图界限的设置来确定 2. 在点的坐标输入中,实现相对坐标输入的方法为(D)在坐标数据前加矽号 3. 在AutoCAD中,用户坐标系是—(B)由用户根据需要设定,数量不限 4. 对一条点划线执行OFFSET^令,偏移出的直线将是(B)点划线 5. 对于正在操作的命令要想终止它,需(B) 按Esc键 __________ 6. 将某一图层锁定,则该图层(B)仍可见,但不能编辑 7. 将某一图层冻结,则该图层(D)不能显示、编辑、输出,不参加重新生成运算 8. 将某一图层关闭,则该图层(B)不能显示、编辑和输出 9. 将某一图层设为不可打印,则该图层(A)可见、可编辑,但不能打印输出 10. 用MIRRORS镜像图形时,原图(A)可由用户决定是否保留 一、单项选择题 1. 用WBLOC命令进行图块存盘,可以保存的对象为(D)以上均可 _ 2. 用BLOCK命令将当前图形定义成块后,当前图形将(B)由用户决定是否保留 3. 用INSERT命令进行图块的插入,可以插入的对象为—(D)以上均可 4. AutoCAD中的表面模型(C)不仅定义了三维物体的轮廓,而且还定义了它的表面,具有面的特征 5. 三维面(3DFACE命令可构造出空间任意位置的平面,一个三维面___________ (B)是3或4个顶点的多边形平面 6. 三维多义线(3DPOLY命令_ (A) 只能画直线段,不能画圆弧,亦不能定义线宽 11. 构造线命令XLINE是无限长直线,但它可以被断开和修剪正确 12. 执行线型比例命令LTSCALE只是为了改善非实线线型的显示效果,并不影响这些线型 的实际输出错误 13. 绘制实心区域命令SOLID只能绘制三角形或四边形的填充区域正确 14. 二维多段线命令PLINE,可以画直线段和圆弧段,但不能定义线宽错误 15. 重画命令REDRAW和重新生成命令REGEN作用是相同的,都是进行屏幕图形刷新的

大学英语作业(西南交大)

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