Class

Class（共10篇）

Class 篇1

一、学情简析

本单元的主要内容是祈使句, 学生已经学会“Open the window, please.”和否定句“Don’t open the door.”两种句式, 初步掌握了“请别人干某事”和“叫别人不要干某事”的英语表达法。

二、设计思想

《英语课程标准》中提出, 小学英语课堂要树立“语言学习的外延和生活外延相等”的观念, 教师要围绕“in life, by life, for life (在生活中、通过生活、为了生活) ”的主题设计教学活动, 从生活和英语的结合中, 探索有效途径。

三、目标

1. 能看懂、会读E部分对话。

2. 掌握祈使句的肯定形式“...please.”和否定形式“Don’t…”。

3. 能听读、辨认辅音字母r和s在单词中的读音。

四、重点

1. 能看懂、会读E部分对话。

2. 能听懂、会说、会读和会写祈使句, 并能在适当的场合正确使用祈使句。

五、难点

1. 能听得懂、会说、会读和会写祈使句, 并能在适当的场合正确使用祈使句。

2. 能听读、辨认辅音字母r和s在单词中的读音。

3. 对本单元知识的综合运用, 进行相应的文明礼貌教育, 提高学生的综合素质。

六、教具

录音机、PPT课件、图片

七、教学过程

Step 1:Warming up

1.I say you do:Stand up.Sit down.Open your books.Come here.Draw a cat.Close your eyes.

2. PPT呈现教师的自我介绍 (伴节奏感强的音乐)

Morning, morning, good morning;Alice, Alice, I am Alice;Rabbits, rabbits, I like rabbits;Running, running, I like running;Puzzles, puzzles, I like puzzles.

(设计意图:以旧带新, 把学生拉入学英语的氛围中, 调动学生参与的积极性。)

3.Free talk

T:Good morning.I like rabbits.How about you?S1:Me, too.Do you like rabbits?

S2:I like dogs.

T:I like running.And you?S3:I like jogging.

T:I like puzzles.And you?S4:I like puppets.And you?S5:I like kites.

T:I have some puzzles.Let me show you them.

Step 2:PPT呈现Part E, watch cartoons and do some exercises.

1.PPT呈现拼图 (E部分图) 的图片,

T:Look!It’s a puzzle.Shall we do the puzzle now?

PPT:凌乱的拼图和短语do the puzzle及句型Shall we do the puzzle?

T:Look!Who are they?S6:David and his father.

T:What’s on the desk?S7:A puzzle.

T:I like doing the puzzle.How about David?It’s eight forty-five.Can David do the puzzle?Let’s watch the cartoon.

2.Answer the questions.

T:What’s the time?S8:It’s eight forty-five.

T:Is it time to do the puzzle?S9:No, it isn’t.

3.Listen to the tape and read Part E.

4. Look and complete. (情景:9点25分, Ben想要看电视, 妈妈建议他睡觉。Ben接受了建议。)

Ben:____the time?Mum:It’s____twenty-five.

Ben:Shall we____TV now?Mum:No, it’s late to watch TV.

Ben:OK.Mum:It’s time to_______to bed.

Ben:All right.Good night, Mum.

5.Now can you give me the answer?Let’s check the answers.

(设计意图:英语教学要培养学生听说读写的能力, 有效的练习能让学生更熟练地掌握所学内容。)

Step 3:Story time.

PPT呈现:Xiaotu guaiguai

1.T:Listen to it and try to understand it.

2.Try to fill in the blanks, use.“come, copy, sit, eat, open drink, draw”. (选词填空)

a.兔妈临出发前交代: (1) Don’t____the door and the windows. (2) ____the new words and____dogs for me a home.

b.小兔们知道兔妈回来了说: (3) ____in, please. (4______down, please. (5) ______some cakes. (6) _____some milk, please.

c.大灰狼站在门外说: (7) _____the door for me, please。

3.Check the answers.PPT:open, Copy, draw, Come, Sit, Eat Drink, Open

4.Read the sentences together.

(设计意图:讲故事好比投下“石子”, 荡起学生用英语思维的涟漪。)

Step 4:学习Part G1, 让学生带着问题观看动画。

T:The rabbits are clever.Here is a dog.It is clever, too.Let’s watch the cartoon.

1.Let’s watch it.

2.T:Listen to it again.This time you can try to read after it.

3.教“give”。Can you read the word“big”“five”?板书:big, five---give

Follow me, please.Give, give, give me a book, give me a pen, give me a ruler... (辅以动作)

4.Judge the sentences. (判断下列句子是否与动画相符, 相符的写“T”, 不相符的写“F”。) Let’s have a try.

a.Liu Tao gives the dog a cap. ()

b.The dog gives Liu Tao a hat. ()

c.The dog gets the bone (骨头) . ()

答案:F F T

5. 给动画配音. (提示学生用短语look at this, come here, si down, give me the cap.)

Let’s watch the cartoon again.Have a try.

(设计意图:给动画配音, 调动学生“玩中学”的积极性, 使学英语的兴趣在玩中得到激发。)

Step 5:学习Part F

T:I like dogs.How about you?S13:I like dogs, too.

T:I like rabbits, too.Look, some rabbits are coming.How happy they are!

1.T:How many rabbits can you see?S14:One...seven.Seven rabbits.

T:Do you like running?S15:Yes.

T:Where are the rabbits?S16:On the sofa.

2.PPT:七只兔子和seven, rabbits, running, on the sofa, 让学生进行句子接龙。

S17:Seven rabbits are running.S18:Rabbits are on the sofa.

S19:Seven rabbits are running on the sofa.

3.趣读句子, 变速读。Seven rabbits are running on the sofa.

练一练, 比一比, 看谁读得又快又准。

4.T:还有哪些单词含有字母r或s?

PPT:read, ruler, brown, rubber, right, write, sweater, skirt sock, six, sit, small.

T:Read after me, please.Ss:OK.

T:Can you read the words?Ss:Yes.

(设计意图:多种形式带领学生学习新知, 让更多的学生乐于参与学习。)

Step 6:拓展延伸, 播放不文明行为录像, 将某一镜头定格, 引导学生说Don t...

S20:Turn off the light.S21:Turn off the tap.S22:Don’t write on the wall.S23:Don’t draw on the desk.S24:Don’t stand up.Sit down, please.

(设计意图:用学生喜闻乐见的方式进行文明礼貌教育, 讲文明, 促和谐。)

Step 7:Homework:1.Copy Part E one time.2.搜集或自制几条文明标语。

附:英文版小兔乖乖故事

Xiaotu guaiguai

Rabbit Mum has seven rabbits.One morning, she carries her basket and says, “Don’t open the door.Don’t open the windows.Copy the new words and draw dogs for me at home.Mum will come back again!”At seven, she goes out.

Ten minutes later (十分钟后) .It’s seven forty.Bad Wolf comes.He finds little rabbits are at home, and their mother is not at home.So he wants to eat the little rabbits.“Open the door please.I am your mum.Open the door for me, please.”he says copying Rabbit Mum’s voice (模仿兔妈妈的嗓音) .

The little rabbits are afraid.They say, “No, we do not open You are not Mum!”They don’t open the door.Time fIies. (时间过得飞快) It’s eight forty.Mum comes back.Bad Wolf quickly goes away (快速逃走了) Mum knocks at the door (敲门) , “My dear white rabbits, open the door quickly.Mum is back.I want to come in.”

“All right, Mum.Come in, please.”Little rabbits know that Mum comes back, and they open the door.They say to their mother, “Si down, please.”“Eat some cake.”“Drink some water, please.”When they see many carrots (胡萝卜) , little rabbits are very happy.

Class 篇2

We are not going to have any classes/lessons next week.下星期我们不上课。

2)class和lesson还有其它含义，这时两者通常是不能互换的。例如：

A)class可以作“课堂;班级;阶级”解，lesson没有此意。例如：

There are forty-six students in our class. 我们班有四十六名学生。

B)lesson可以作“功课;科目;(课本中的)一课;教训”解，但class不可以。例如：

汽车CLASS-A曲面设计 篇3

CLASS－A曲面包含造型工程品质和CLASS－A内在品质两层含义：

造型工程品质：造型品质的衡量则是仁者见仁，智者见智，很难形成统一的评判标准。同捷的要求是主要特征必须有参考依据，整车造型风格必须协调统一；确保工程品质，外观品质基准书，断差表现出产品的雕塑感和品质感，提高制造和設计的一致性。

CLASS－A内在品质：CLASS－A曲面的特征制作、控制方法，各部件之间配合规律，曲面检查、评价方法等。CLASS－A曲面的过渡或圆角区域满足曲率或以上连续，特征线、边界线光顺；反射线、斑马纹分布均匀且粗细均匀变化；控制顶点分布规则，各行控制顶点间角度变化均匀。

求特征线合理拆面：对于复杂的汽车车身曲面来说，用一张曲面表达不到位，必须用多张曲面拼接而成，要求面与面拼接后各个参数没有明显的畸变。在拼接过程中经常要处理曲面与曲面之间的过渡曲面或圆角等，在构造过渡圆角曲面的过程中，影响过渡圆角曲面的因数很多，但最重要的是两曲面的理论交线。一般来说，希望要构建过渡圆角曲面的2个(组)基本曲面应该建立到或超过理论交线。这为基面调整带来方便，也为模具和工装設计提供工艺补充面，同时还可以利用交线来控制主面的质量。

四边构面合理变形：CLASS－A曲面的要领是用正向的思路来做点云拟合创建数学模型，我们用四边面的方式来制作曲面，单个曲线要光顺，对应边的曲线趋势要一致，如果造型特征不一致，中间必须增加线串控制。特征线、曲面的边界线、线与线之间的对比关系，线条之间的关系处理好了，就能得到一张好面。面与面之间的连续性需要通过特征线来控制，各个特征线合理了，面与面之间的连续性就很好控制。

特征弧高：在CLASS－A曲面制作过程中需要做特征弧高评价，用曲率来表示，即弧高除以弦长再乘100％，高可见区单特征曲面的曲率应不小于6％。加弧高时要注意造型特征变化和特征特性，根据不同的造型风格合理設计特征弧高，合理的弧高能准确体现造型风格。

Class 篇4

本刊讯 (供稿张立猛) 沃特世ACQUITY UPLC®系列的新成员——A C Q U I T Y U P L CH-Cla s s系统继在上海、北京、广州、香港、台湾与全球同步发布后, 得到广大用户的认可和充分好评。为让更多国内用户尽早了解该系统以及该系统如何帮助用户实现商业价值, 沃特世公司于2010年3月开始, 在哈尔滨、天津、石家庄、苏州、杭州、武汉、成都、深圳、沈阳、大连等21座城市举办新技术与应用研讨会, 介绍新型ACQUITY UPLC, 并由沃特世公司管理层及资深应用工程师在现场进行详细讲解。

沃特世公司的ACQUITY UPLC系列已经可以满足用户对有限样品分析、制造过程中的样品分析、常规分析、研究与开发的需要;可以根据用户的需要, 选择最适合的UPLC产品。此项新技术无疑将对制药、食品、环境等众多领域产生深远影响。

《梨泰院class》剧情观后感 篇5

这是由金善允执导的新剧《梨泰院class》，该剧改编自同名网络漫画，讲述的是一群年轻人对不公平世界的反叛，他们因各种原因聚集在“梨泰院”这条街道上，各自追求自己的价值观，并谱写创业神话的故事。该剧由朴叙俊、金多美、权娜拉领衔主演，目前豆瓣评分8.8分。

这部剧到目前为止才播出了4集，就已经在各视频平台上引起热烈反响，除了新鲜讨喜的主角人设，演技和剧情都值得一品。

前两集的内容交代了男主的身世，可以用一个“惨”概括，讲述了原本拥有大好前程的高中生朴世路因维护弱小与霸凌校园的富二代发生冲突，被退学，父亲也因此失业、被杀害，男主试图殴打报复富二代未果又坐牢的故事。

一开始没有主角光环的加持，如此憋屈的情节却被演员的演技抵消了，“信念”二字就写在男主硬气的脸上，扎心台词确立男主的价值观，看的那叫一个爽!三年牢狱、七年漂泊，朴世路终于归来，在梨泰院这条街上开始创业之路。

第3集开始，高能的女主出现了——赵伊瑞，长相甜美、德智体美全面发展的高智商小恶魔，拥有76万粉丝的社交媒体人气博主，拥有反社会人格的独特女生，同时又伸张正义、以牙还牙。

女主的人设并不“善良”，她危险、自私、勇敢又任性，但又比一根筋的男主多了一些谋略。

高中时期，女主赵伊瑞目睹同学被区政厅厅长的女儿霸凌，她录下厅长女儿施暴的全过程并上传到SNS上，迅速获得全网热议和讨伐。区政厅厅长找到女主想用权势压迫她，并掌掴女主，但早就料到事情发展的女主，提前让好友拍摄下厅长威胁自己的过程，并表示会继续将事态扩大，男主突然出现“英雄救美”，没想到女主却趁机狠狠还了厅长一巴掌……

看腻了傻白甜、玛丽苏、圣母的女主，这种一上来就高智商虐反派、爽快抽耳光的女主人设真的太香了……

再说一下感情线，朴世路一直暗恋在孤儿院长大的女二吴秀雅，男主漂泊归来之后，二人才重新见面以朋友相处。前两集一开始，弹幕就已经对利己主义的吴秀雅开启“攻击模式”，然而细想，一个长久在温饱线挣扎、接受男主仇家资助的女孩如果是“圣母”那就不合理了。

一根筋坚定信念的男主朴世路、反社会人格女主赵伊瑞、利己主义的女二吴秀雅，三人在同一个镜头中出现的时候，好戏就来了。

未成年的赵伊瑞在男主店里喝酒，吴秀雅为保住工作，向警察举报了暗恋自己十年的男主。此时赵伊瑞已经对男主产生了兴趣，吴秀雅也感受到危机，二人针锋相对、势均力敌，谁也不是软包子。

面对比自己成熟漂亮的大姐姐，一般的小女孩早就紧张兮兮沉不住气了，然而女主却一直智商在线，几个回合下来，反将一军。女二最终向男主坦白自己举报的事实，然后离去。

如此大气坦荡有个性的女主，直接打破韩剧的“八集定律”，不拖沓、不狗血，感情线一下明朗起来。

Class 篇6

In China’s main urban centers, Beijing and Shanghai, the middle class accounted for 46 percent and 38 percent, respectively, of the local population.

The report, published by the Chinese Academy of Social Sciences (CASS), defines the middle class as people who spend only 30 to 37.3 percent of income on food. More specifically, the report’s lead author, Zhang Lifeng, said they are mostly people in households with a per-capita annual disposable income of between 16,300 yuan ($2,556) and 37,300 yuan ($5,848).

Tan Tan, a young staff in a private company in Beijing with a monthly salary of 5,100 yuan ($800), belongs to the middle class category as defined by the report. But she said she didn’t feel “middle class” at all.

Tan spends about two thirds of her disposable income on daily necessities, such as rent, utilities, food, clothing, transportation and phone bills. She saves about 17,000 yuan ($2,665) a year on average.

She believes “middle class” refers to a lifestyle far removed from her own. Facing rising housing prices and inflation, Tan said she found her finances constantly stretched and didn’t have the peace of mind with which she associates a middle-class lifestyle.

“I do not own a house. The money I save in a year is not enough to buy 1 square meter of living space,” Tan said.

Like Tan, many statistically qualified middle-class Chinese people are struggling to pay mortgages, cars, medical bills and their children’s education.

Vague definition

Although the term middle class is widely used, there is no universally accepted definition for it.

The middle class in other countries is usually defined by income and occupation, said Zhang, lead author of the CASS report and a researcher with the academy’s Institute for Urban and Environment Studies.

“The American middle class consists of households with an income between$40,000 and $200,000, which accounts for 80 percent of the country’s population, while the German middle class includes households with an income between $30,000 and$800,000, or about 55 percent of the population,” she said.

The first references to a modern Chinese middle class were made in the late 1980s after China implemented the reform and opening-up policy. Only since the turn of the century have mainstream Chinese scholars been studying the middle class, said Cheng Li, a senior fellow at the U.S.-based Brookings Institute.

According to international standards, to be middle class in a developing country requires a daily income of between $4 and$6, said Li Shi, a professor at the School of Economics and Business Management of Beijing Normal University.

By this standard, China has a very large middle class, but the accuracy of this standard is debatable as developing countries vary wildly.“Whether China has a middle class is contingent on how we define it,” Li said.

Chinese researchers usually use income, profession and education as most essential criteria in determining middle-class status, and some scholars also use consumption level in their studies.

In 2005, the National Bureau of Statistics

released a survey, which showed the urban middle class should have an annual income between 60,000 yuan ($9,405) and 500,000 yuan ($78,376). At the time the bureau estimated that the middle class constituted 5 percent of urban Chinese residents.

In her newly published report, Zhang classified households with an Engel’s Coefficient of between 0.3 and 0.373 as middle class. The Engel’s Coefficient refers to the share of food in total household expenditure.

Zhang chose to use consumption level rather than income as a measure of middleclass status, because, she said, Chinese citizens are often hesitant to disclose their full incomes, and there are huge disparities in living costs between China’s regions.

According to the UN Food and Agriculture Organization, the Engel’s Coefficient for the richest segment of society is typically below 0.3 and for the wealthy stands at between 0.3 and 0.4. Zhang said she chose the 0.3 to 0.373 range for China’s middle class after taking into account Chinese citizens’ consumption and living patterns and China’s socio-economic system.

But Zhang’s conclusion that China had 230 million middle-class urban residents in 2009 has been widely criticized. A netizen known as Wuyue Sanren said the Ministry of Finance’s (MOF) statistics show only 24 million people in China make more than 3,500 yuan ($549) per month, the personal income tax exemption threshold effective

on September 1. “How can a person with income below the income tax exemption threshold level qualify as a middle class?”Wuyue Sanren said.

Zhang said the MOF’s data were based on individuals’ reported incomes, while hers were based on household spending. Since many Chinese people have off-book income, Zhang said she believed household spending provides a more accurate picture of people’s lifestyles.

Wang Jian, Secretary General of the Chinese Society of Macroeconomics of the National Development and Reform Commission, said he thought Zhang’s estimate was more or less accurate.

Wang admitted China’s present high inflation had placed an enormous strain on all citizens, but he said even struggling mortgage payers remained middle class in comparison to people who cannot even afford a down payment. Painstaking growth

“Currently, the shape of China’s income structure is not an olive with a bulging middle and tapering ends, but a pyramid with a large group of low-income people at the bottom,” said Li at Beijing Normal University.

But Zhou Tianyong, a professor at the Party School of the Central Committee of the Communist Party of China, tends to believe China’s income structure takes an inverted T shape, with the middle to high-income popu- lation constituting the vertical bar and the bulk of the people being the horizontal bar at the bottom.

Zhou said the best way to produce an olive-shaped income structure in China is to boost the growth of small and medium-sized enterprises.

“In China, the number of owners and managers of small and medium-sized enterprises is relatively small, as the growth of small and medium-sized enterprises is inhibited by heavy taxes and difficulties in fundraising,” Zhou said.

Using data released by the State Administration for Industry and Commerce, Zhou calculated China had 12 enterprises per thousand people, whereas China’s Taiwan and South Korea each had 50 enterprises per thousand people.

“If China has 50 enterprises per thou

sand people and each company is run by at least two people, then one 10th of the country’s population will be middle class,”he said.

China’s growing income disparity between a high-income elite and the struggling remainder of the population remains an impediment to changing the structure of the country’s income pyramid.

“With the growing income gap, it is difficult to have a fast-growing middle class, said Chi Fulin, a researcher with the China Institute for Development and Research, a think-tank based in south China’s Hainan Province.

Chi believes a rapid expansion of the middle class will only happen if China increases wages in its service and hi-tech sectors. “It is difficult for an economy dominated by investment and industry rather than services to breed a mass middle class,” he said.

According to Bai Chongen, a professor at the Tsinghua University’s School of Economics and Management, the share of household income in total national income dropped from 63 percent in 1993 to 52 percent in 2007, whereas in the same period, the share of government revenues increased 9 percentage points, and that of enterprises’ income went up 2 percentage points.

He called on the government to increase expenditure on public programs and distribute dividends of state-owned enterprises to citizens, saying these efforts will greatly reduce the burden on citizens.

Class 篇7

Datamax-O’Neil在考量了泛太制帽各方面需求之后, 为客户设计了量身定做的打印解决方案。泛太制帽最终应用了I-Class系列工业级条码打印机——I-4280。

Datamax-O’Neil I-4208打印机内置网卡, 方便于远程的电脑信息传递和信息操控。I-4208的分辨率分别为203dpi, 用来打印外箱和内盒的标签, 在满足识读精度的同时降低了客户原本需要外订标签的投入成本。除此之外, I-4208内置在线检测仪, 客户在使用过程中只需要设定好IP地址就能实现无人值守在线打印并检测。首先避免了人工检测, 其次大幅减少了不合格标签的生成数量, 提高了生产效率。

“在选择解决方案时, 我们最初考虑过用外置条码检测仪并实行人工检测, 但不能实现实时工作, 并且不合格的条码要通过另外补打的方式来实现。Datamax-O’Neil I-4 2 0 8内置的在线检测仪刚好符合我们的需求, 并且能实现实时补打。而且Datamax-O’Neil I-4208打印机提供的在线检测功能, 避免了不合格标签在生产线上的使用。”上海泛太制帽I T经理曹亮表示。

Class 篇8

1. 关于E-CLASS

E-CLASS又称网络班级，是在2009年年初，上海市教卫党委和市教委专题立项，委托上海教育系统网络文化发展研究中心和上海致光信息技术有限公司共同研发高校网络文化产品。项目一期研发周期为9个月[6]。

作为全市教育系统的网络思政教育平台，E-CLASS系统立足高校具体应用和思政工作需求，是健康的师生精神文化生活新空间;借鉴商业交互网站的技术理念优势进行研发，是校园传播先进文化的新途径;实现“学校—院系—辅导员—班级”的多层级管理，是优质的校园公共文化服务平台;该系统安全稳定、功能实用新颖，极大提升了新媒体背景下高校网络文化建设和管理工作的有效性，是高校网络育人工作的新阵地。

E-CLASS与QQ、MSN、飞信相比较，他们之间最大的共同点：都是即时聊天工具。但与其他聊天工具不同的是，E-CLASS发布的信息更贴近在校学生，纯净无广告，方便高校教师的后台管理。E-CLASS更像一个电子教室，将老师与学生、班级都清晰地罗列出来，有效地管理好所在的班级和专业。同时E-CLASS就是即时交流工具和论坛的相互结合，实现娱乐学习的紧密连接，让学生在接受学校信息的同时也能进行交互式的信息传递，这是QQ、MSN、飞信所不能达到的，E-CLASS也做出了一个完全不一样的交流平台，供教师与学生的互动，以便了解每个同学的学习动向。

2. 利用E-CLASS开展高校辅导员就业指导工作的特点

2.1 开放性

网络是开放的，理论上任何人都可以通过任何特定的站点在任何时间内实现登录。网络又是交互的，它能满足最大多数用户在最短时间内实现沟通和交流的需要[7]。网络的这种特点正好弥补了传统教育工作开展必须定时、定点、定人的不足。许多做过毕业班辅导员的老师都有同样的感受：毕业班班会难召集。诸如离校手续办理、户口档案管理、人事代理手续办理等程序性、政策性较强的工作往往需要在班会上统一宣传和教育，既要将每一个环节讲清，又要使每一个同学明晰。在这种情况下，E-CLASS空间开放性的特点将得到充分体现。辅导员可将班会召开与E-CLASS空间发帖相结合，将班会内容以帖子的形式发布到E-CLASS空间论坛，不能参加班会的学生可随时登陆群空间查看班会内容，并可通过跟帖或在线交流的方式向辅导员提出问题，其他同学也可通过查看帖子内容再次重温班会内容。

不仅如此，辅导员还可以通过E-CLASS空间的发帖功能，对学生进行职业生涯规划、形势与政策指导、择业标准和择业观念教育等方面的指导，帮助学生树立正确的就业观，传授择业技巧，培养和提高学生的就业能力。

2.2 隐秘性

网络的虚拟性和匿名性使得思想政治教育工作者可以用平等的身份与大学生在网络平台上交流。这种交流改变了单向强制的“灌输”教育方式，思想政治工作者与大学生可以打开心扉，畅所欲言，容易在比较宽松的网络环境中对学生进行潜移默化的教育[8]。每一个学生在身心素质、性格特点、能力特长、家庭情况等方面都有不同，面对同一问题的思考角度、解决方式也有所不同。因此，毕业生就业指导工作具有极强的针对性。有些学生由于种种原因，不愿意直接面对辅导员和其他同学。在E-CLASS里，辅导员与学生的地位是平等的，这是一个既可以任意选择、同时共享，又可以彼此分离、宽松隐秘的交往环境，缓解了传统的面对面的交往方式给人的心理压力。学生可以选择公开聊天，也可以以私聊的形式和辅导员进行单独沟通，也可以在不明确的个人身份的前提下和辅导员进行交流。因此，不仅是关于就业指导服务方面的问题，还包括私密的、生活上的、个人感情上的、人际交往等方面的问题，学生都可以开诚布公地和老师交流沟通，获取帮助。利用E-CLASS，能够调整师生代际关系，实现师生的平等交往，更有利于大学生就业指导工作的开展。

2.3 灵活性

网络的灵活性对于高校思想政治教育工作的影响主要体现在两个方面。首先，在时间上打破以往的工作时间限制，分布在互联网上的信息可随时供广大师生查阅和浏览。其次，在空间上突破了过去开展高校思想政治工作只局限于校内，而将目标分散在社会各个层次和部门，让大家广泛参与其中，动用全社会力量来推动和影响高校思想政治工作，从而收到更好的效果[9]。建立E-CLASS，能够充分运用网络时代人际交往的特点，有效地拓展大学生就业指导工作的空间。由于高校教师工作任务重，工作机制灵活，加之高校学生学习时间灵活性较大，高校辅导员在现实中与学生接触的机会较之中小学来说要少得多。E-CLASS的建立实现了高校师生的时空对接，通过网络将不同时间、不同地点的师生联系起来，及时发现问题，及时解决问题，及时提供服务，大大丰富了大学生就业指导服务的内容，增强了时效性，提高了工作效率。

2.4 主动性

网络打破了长期以来占据统治和支配地位的以教师为中心，“我讲你听”“我打你通”“我说你服”的简单的单向灌输模式。在网络中，老师与学生之间建立了一种相对平等的关系，使得老师跟学生之间的交流更加流畅，提高了学生在与老师沟通方面的主动性。

E-CLASS作为一种校园网络同样具有这种优势，任何人都可以随时加入正在讨论的任何一个话题之中，可以在群空间上发帖、评论，形成一对一、一对多、多对多、多对一等多种教育阵形。因此，同传统教育形式相比，E-CLASS更能吸引学生自主交流，主动倾吐自己的或他人的心声，使“各抒己见”的开放性交流和“促膝长谈”的私密式沟通相互间不受干扰成为可能。正如广告语所说，我的地盘我做主。在充分尊重并依托自主权的E-CLASS中，少了些压力，少了些强迫，多了些轻松，多了些主动。学生能够无所顾虑、主动向辅导员寻求就业指导服务。

2.5 传递性

利用E-CLASS，大家可以随时分享或者转帖一些优秀的博文、重要的通知，做到一人知晓全班甚至全校知晓，信息的传递性大大节省了以前的分批通知，加快了学生获取信息的速度，也提高了高校教师的工作效率，全面地扩展了信息的延伸性，并且教师也能在发布通知时，随时查阅学生的浏览量，进行进一步的安排，同时也拉近了彼此之间的距离。正是由于转帖工具的高效性，让学生在转帖中轻松地传递了信息，广而告之，提高了工作效率。

3. 利用E-CLASS开展就业指导工作的优势

3.1 随时随地开展就业指导

大学生就业指导工作是一个系统工程，具有系统化、规范化和科学化的特点，所以辅导员在进行就业指导时应该树立全程化的就业指导意识，即应将就业指导教育贯穿于学生从入学到毕业的全过程之中[10]。从帮助学生树立正确的就业观，开展职业生涯规划教育，引导学生认识、调整、完善自我，提高学生就业竞争力，到传授择业技巧、提高就业心理咨询服务、帮助学生处理就业信息、统计学生就业率，辅导员所承担的就业指导工作内容多，范围广，要求高。除了通过设置大学生就业指导课程，召开班会，举办专题讲座，组织参观，模拟面试等途径，更应该充分利用E-CLASS的开放性、稳定性、灵活性、主动性的特点，使大学生就业指导工作进网络，进宿舍，使学生可以随时随地查阅就业指导信息、招聘面试技巧、政策法规以及各项文件，根据个人情况及时提出就业服务需求。对于那些到外地就职或回生源地的学生，可以通过E-CLASS及时向辅导员汇报情况，及时得到帮助和指导。

3.2 完全开放的交谈空间

如前文所述，基于E-CLASS的交谈方式大致可分为公开聊天、私聊、发帖、跟帖、

讨论、向辅导员发送电子邮件等形式。E-CLASS能够实现全员线上线下交流，它赋予每位成员同等的话语权，实现交互学习和讨论，为实施大学生就业指导教育和民主管理提供可能。

面向全体群内成员的交流方式能够协助辅导员开展需要全员共知的知识和能力的传递和培养。如关于公务员报名和考试问题的问答，或许只是某个学生提出的疑问，但对于其他学生同样具有参考意义。因此，当辅导员在公开聊天的状态下与该学生探讨这个问题时，其他更多的同学将得到帮助和指导。虽然只是针对某个个体的具体指导，但其教育和引导的对象却是面向全体学生。如果辅导员将提问和回答的过程经剪辑后转帖到主社区时，这种完全开放的交谈方式将得到充分的体现，问题的提出和回答将由个别问题提升到共性范畴，其教育和指导意义将得到丰富和升华。

3.3 功能完备的信息载体

网络具有传播速度快、覆盖面广、自由度大、信息储备量大的特点。大学生可以在任何一个设有终端显示器的地方随时获取信息和发表心声，而且绝大多数是主动式参与[11]。

E-CLASS营造了一个公平、公正、公开、轻松的交流环境。可以通过E-CLASS进行文字聊天，在E-CLASS空间中编辑文字帖、发表图片。利用这些功能，辅导员在就业指导工作中，可以将需要完成的工作直接以文字、表格、图片等形式发送给学生。基于E-CLASS软件的不断开发完善，E-CLASS作为一个功能完备的信息载体，在高校辅导员就业指导工作乃至班级管理工作中的作用将日益明显。

3.4 长效畅通的联系渠道

就业工作中的关键一环就是就业信息的及时传递。许多毕业班在临近毕业面对用人单位的用人需求时往往联系不到毕业生参加招聘面试。因为毕业生课程一般安排较为灵活，有些毕业生整日在外奔波，有些毕业生时常更换电话号码，有些毕业生暂无通讯工具无法联络，等等。这样的情况下，如果减少信息传递的盲区，就能让更多的学生享有就业机会。

学生毕业后，辅导员还需要完成就业率统计工作，继续保持同未就业同学的联系，帮助这部分同学尽早就业。由于E-CLASS软件是一个免费软件，E-CLASS申请后也无需付费，辅导员所带的所有班级将在E-CLASS中保留，因此很多学生在毕业后仍可以继续使用E-CLASS，其稳定性更强，更利于维持长期、有效、畅通的联系。

4. 利用E-CLASS开展就业指导工作应注意的问题

4.1 指导学生正确使用网络

网络就像一把双刃剑，在给我们带来便利的同时，也带来了许多的隐患。如网恋、非法网站、网络游戏、网络暴力等充斥于网络中，污染了网络环境。同样网络在给高校思想政治教育工作带来机遇的同时也带来了很大的挑战。在清华大学高校德育研究中心举办的“高校德育论坛———网络思想教育研究全国学术研讨会”上，专家们一致认为，建设具有较高政治理论水平，能熟练掌握信息网络技术的高素质思想政治工作队伍，是搞好新形势下高校思想政治工作的基础[12]。因此，为了更好地发挥网络的优势，减少其不利影响，辅导员应首先引导学生正确使用网络，要明辨是非，适度而行，善于使用网络。

4.2 尽量避免不当言论对其他受众的影响和冲击

E-CLASS是一个开放的空间，从教师的角度来说，正面的信息可以教育和引导学生，负面的信息可以影响和冲击学生。从学生的角度来说，他们具有高昂的热情，但同时也缺乏足够的理性，在不同观点的争论中容易出现人身攻击现象，在涉及政治问题的讨论中容易出现过激言论，个别不负责任的人贴出某些内容不健康的文章，等等[13]。开放的环境下的教育和服务，要求辅导员具备相当的思想政治素质和思想教育能力，掌握大学生就业指导工作的知识和方法，具备掌控大局的能力，尽量避免个别问题的不当言论对其他学生的影响。

4.3 网络普及率、E-CLASS占有率及上网时间的多少都将对通过E-CLASS实施大学生就业指导工作的有效性造成影响

即使在网络已经基本普及的今天，仍不可避免的有些地区无法使用网络，部分学生没有E-CLASS，部分学生上网时间有限，这样的情况将削弱E-CLASS在学生教育管理和大学生就业指导方面的优势。

4.4 面对面的就业指导必不可少

美国著名学者杜威认为：“一个教育目的必须根据受教育者的特定个人的固有活动和需要。”[14]网络的发展为高校思想政治教育工作带来了很多的便利，打破了传统意义上的育人模式，在工作开展的时间和空间方面体现了更多的灵活性。然而，思想政治教育工作开展的对象是学生，每个人都有着各自不同的利益和需求，因此不能搞“一刀切”，必须针对不同的个体解决具体的问题。同样，通过E-CLASS开展的大学生就业指导工作是对日常的、面对面的就业指导工作的补充和完善，其并不能等同于师生之间面对面的就业指导和服务，更不能替代大学生就业指导课程、实践等环节的工作。因此，开展大学生就业指导工作应将E-CLASS的建设与班级的建设、发展结合起来，与日常的教育教学管理结合起来，使之产生最大的合力。

大学生就业工作是一项周期长、要求高、内容细、环节多、对象多的复杂的系统工程[15]。辅导员作为大学生接收就业指导教育的最直接渠道，承担着较之就业指导中心更深入、更细致、更全面的就业指导工作。如何在这个网络化时代，切实将网络与大学生就业工作结合起来，加强和落实辅导员在大学生就业指导工作中的角色和作用将成为高校顺利开展大学生就业指导工作的关键。

摘要：随着信息化时代的不断发展,网络对社会的渗透程度越来越深,互联网已逐渐成为人们生活的重要空间和工作学习的必要载体。如何利用网络来为大学生就业服务成为解决现在高校辅导员就业指导工作中所面临问题的重要途径,于是作为上海市教育系统的网络思政教育平台,E-CLASS(网上班级)应运而生。文章针对高校辅导员就业指导工作的实际,结合E-CLASS的优势和不足,就其在高校辅导员就业指导工作中的应用探讨了利用E-CLASS开展高校辅导员就业指导工作的特点、优势,并对E-CLASS和QQ、MSN、飞信等学生普遍熟悉和正在使用的交流工具进行比较,对完善E-class在高校就业指导工作中的应用提出若干建议。

Class 篇9

本文通过使用DisQuE™基质分散样品制备试剂盒快速地对样品进行处理, 并采用沃特世®ACQUITY UPLC®H-Class系统对其进行液相色谱-荧光检测, 在不到4分钟的时间即可完成对样品的PAH分析, 可快速实现对海产品中的PAH污染物的筛选。

实验仪器

DisQuE™基质分散样品制备试剂盒

一般称为“QuEChERS”的基质分散固相提取方法, 是一种简单直接的样品制备技术, 适用于各种食品中多种农药残留的分析。沃特世DisQuE™基质分散样品制备试剂盒包含2组离心管, 里面有预先称好的吸附剂和缓冲剂, 专门针对AOAC (美国官方分析化学师协会) 官方分析方法的使用而设计。

DisQuE™基质分散样品制备试剂盒包括:

DisQuE™提取管 (试管1) :50mL离心管中预装入1.5g无水醋酸钠和6g无水硫酸镁。

DisQuE™净化管 (试管2) :2mL离心管中预装入150mg无水硫酸镁和50mg PSA固相萃取填料。

DisQuE™基质分散样品制备试剂盒可提供快速、简便萃取海产品试样中PAH的方法。样品进化后不需浓缩或溶剂置换, 而且无需进行SPE固相萃取柱常用的平衡步骤, 使用方便, 省时省力。

ACQUITY®UPLC H-Class系统

ACQUITY UPLC®H-Class系统是一套经过优化的先进系统, 具有四元溶剂混合的灵活性和简易性, 并带有一个流通针式进样器, 可实现UPLC分离的先进性能——高分离度、灵敏度和高通量, 同时还保持了ACQUITY®系统所被公认的耐用性和可靠性。选择ACQUITY UPLC®H-Class, 可以在面向未来的LC平台上继续运行现有的HPLC方法, 并可实现向UPLC分离的无缝转换。样品经过前处理后, 即可使用集成系统工具和可靠的色谱柱工具包进行方法转换和方法开发, 以简化过渡流程。

实验方法

样品前处理

鱼虾样品通过搅拌器进行均质化处理之后, 将其加入至沃特世提供的DisQuE™提取管中。加入乙腈并用力摇动试管, 从而使海产品试样与乙腈和吸附剂形成一种混合液。对提取管进行高速离心, 使之出现一层清澈的上清液。将该层上清液等分成两份, 将其中的一份加入至DisQuE™净化管中, 然后进行摇动和离心;将第二份上清液转移至一个样品管中, 加水稀释后进样。

色谱分析

采用ACQUITY UPLC®H-Class系统与沃特世的PAH色谱柱, 在水、甲醇和乙腈组成的三元梯度下对这些化合物进行洗脱。ACQUITY®FLR检测器使用大容量的流通池, 每种PAH分析物的激发和发射波长均进行了时间程序的优化。总分析时间为3.5分钟。

图注:使用ACQUITY UPLC H-Class系统, 荧光检测器, 在4分钟内完成一次PAH分析。15种分析物分别为:1-萘2-苊3-芴4-菲5-蒽6-荧蒽7-芘8-苯并蒽9-屈10-苯并 (b) 荧蒽11-苯并 (k) 荧蒽12-苯并 (a) 芘13-二苯并 (a, h) 蒽14-苯并 (g, h, i) 15-茚并 (1, 2, 3-cd) 芘

结果与讨论

由实验可见, 通过使用DisQuETM基质分散样品制备试剂盒进行简单操作, 荧光检测式ACQUITY UPLC®H-Class系统可在4分钟内完成一次PAH分析。此解决方案对于每天需要对大量样品进行检测的工作者来说具有非常重要的意义。研究表明, 如果使用本实验方案, 一位化学师仅用3 0分钟就可制备出一个检测批次的12个样品, 每天可轻松处理超过150份样品, 大大节省检测时间、提高检测效率。

与此同时, 本方案可帮助实验室筛选海产品中的PAH残留, 无需高成本便能及时地给出结果;检测结果准确性高, 很大程度上减少消费者对食用海产品的顾虑。

Class 篇10

The central bank， the Peoples Bank of China （PBOC）， launched the scheme on October 30， though a timetable for when the reforms would take place was not released.

Zhang Zhi， a bank clerk， plans to invest in e-commerce giant Alibaba， which is listed on the New York Stock Exchange. “Ive been waiting a long time to buy Alibaba stock， and now the opportunity is coming，” he told International Finance News， a weekly newspaper published in Shanghai.

Under the new guidelines， the Shanghai FTZ will spearhead the countrys initiative to make the yuan a fully convertible currency. The zone will also take a leading role in the qualified domestic individual investor （QDII2） scheme and allow qualified individuals to directly invest in overseas businesses， real estate and financial products， according to a PBOC statement detailing the pilot scheme. Additional institutions and individuals will be allowed to trade securities and futures in domestic and foreign markets in the zone， which will also support establishing overseas private equity funds， according to the statement.

Making the yuan fully convertible and reviewing QDII2 are the major reforms detailed in the statement and are expected to be carried out during the first half of 2016， Chen Bo， Secretary General of the Institute of Free Trade Zone at Shanghai University of Finance and Economics， told International Finance News.

Looking abroad

The PBOC launched a free trade account in Shanghai in June 2014. Companies registered in the FTZ can use the account for financing， investment and other cross-border transactions.

The account allows free convertibility between domestic and foreign currencies based on that days exchange rate. Under current regulations， companies operating in the zone can borrow up to double their capital in foreign markets， which can then be fully converted into the yuan.

The new rules and QDII2 will extend those benefits to individuals and further loosen curbs on offshore borrowing. Individuals are currently allowed to exchange $50，000 worth of renminbi each year for traveling or spending， but Chen told International Finance News he expects this quota to increase with the new regulations.

In fact， he sees QDII2 as a type of innovation. Various reform measures have been carried out over the past year， but QDII2 is the most substantial advancement China has made toward improving individual investments， he said.

Chen said that he anticipates additional legitimate channels to be opened to allow domestic investors to put money in foreign stock markets and buy overseas-listed stocks， insurance or wealth management products.

“Overseas investment under the QDII2 system will bring a lot more business to financial institutions engaged in wealth management. After the system is issued， most of the investment will be made in financial， industrial and real estate sectors in foreign markets，” Xiao Benhua， a professor with Shanghai Finance University， told International Finance News.

Risks

While individuals will now be able to invest in overseas markets， the real winners of the reform are financial institutions that will be permitted to push their money abroad， Chen said in the article.

“But huge opportunities are also followed by huge risks，” he said.

The biggest challenge in making the yuan a fully convertible currency is supervision. Once the currency is liberalized， a large amount of capital will flow into China， causing the yuans exchange rate to fluctuate. To make the exchange rate more flexible， the PBOC will have to relinquish more controls to allow the fluctuations in the exchange rate. This raises concerns over whether the Shanghai FTZ is capable of controlling cross-border capital flow， according to Chen.

Indeed， some scholars say the yuan wont be fully convertible anytime soon because of the possible consequences of letting go of the controls. Xi Junyang， Deputy Director of the Research Center of Modern Finance at Shanghai University of Finance and Economics， told International Finance News that the controls prevent both a large amount of outbound capital that would impact Chinas sustainable economic development and a sudden inflow of foreign speculative capital that would impact the countrys financial stability.

Sun Lijian， Director of the Financial Research Center at Fudan University， thinks now isnt the right time to make the yuan fully convertible.

“Considering the history and Chinas current conditions， I think the disadvantages will outweigh the advantages if we advance free convertibility of renminbi now，” said Sun， in an interview with International Finance News.“Industry and finance are most important for a country， with industries being the base. If industries are not well developed and people are making money only through investment， this is speculation， which is not healthy. But this is exactly the situation in China.”

China doesnt have enough publicly-listed companies with good performance histories， Sun said. And once transnational corporations withdraw their money， Chinese companies will be left to operate independently. It would be dangerous， he said， for the government to make the yuan fully convertible now.

While Sun and other academics think its too soon， timing is of the essence for the government to free the currency as it is currently trying to get the yuan accepted into the IMFs basket of global reserve currencies.

Media reports published in October say the IMF plans to add the yuan to the Special Drawing Rights， which is used as a supplement for IMF member countries official money reserves and can be used for emergency payouts. The U.S. dollar， pound， yen and euro currently make up the reserve.

Zhou Xiaochuan， Governor of the PBOC， said at the IMFs annual meeting in April that China has achieved full or partial convertibility in 35 out of the 40 items the IMF uses to classify capital account transactions.

An HSBC report on renminbi published on October 20 said the yuan “ticks all the right boxes” to be included in the reserve.

“Others set the stage for the renminbi to play a more important global role over the longer term，” Paul Mackel， the reports author， wrote.