thin-layer chromatography的变形

历年考研英语阅读理解mp3(98-3)

[00:00.00]在线英语听力室( www.tingroom.com )友情制作 [00:05.80]1998 Passage3 [00:08.62]Science has long had an uneasy relationship [00:11.94]with other aspects of culture. [00:14.56]Think of Gallileo's 17th-century trial for his rebelling belief [00

发表于:2018-12-01 / 阅读(314) / 评论(0)

历年考研英语阅读理解

上海牛津初中英语九年级下--CHAPTER 1

CHAPTER ONE [00:44.25]READING [00:45.74]Page 2 and 3 [00:48.43]THE YOUNG GREEN CONSUMER GUIDE [00:51.51]Review by Tony Ma [00:54.62]This book says that our world is in danger [00:59.32]It is vital that we do something to save the earth [01:04.21]Firs

发表于:2018-12-01 / 阅读(419) / 评论(0)

上海牛津初中英语九年级

听一分钟英文：Ozone Layer-臭氧层

I first heard about the ozone layer about twenty years ago. I was still in school. I thought it was interesting, but I didnt take it seriously. It was a bit like science fiction, I mean, how could there be a giant hole in the atmosphere? Over the yea

发表于:2018-12-04 / 阅读(106) / 评论(0)

听一分钟英文-O

英语课程计划-the Preservation of the Ozone Layer

There is a special day to recognize the importance of the ozone layer. In 1995, the United Nations General Assembly decided September 16th is the International Day for the Preservation of the Ozone Layer. This is the date on which countries signed th

发表于:2018-12-29 / 阅读(133) / 评论(0)

英语课程学习计划和讲义

经济学人:空气污染:吹走它(2)

Another good candidate would be a government-run plant at Badarpur, less than 50km from the middle of Delhi. 另一个较好的选择便是位于巴达普（距德里市中心不到50千米）的官办工厂。 According to the Centre for Science and

发表于:2018-12-29 / 阅读(54) / 评论(0)

经济学人科技系列

电信专业英英词典P-1

P-MAC packet media access controller PAD packet assembler-disassembler PCB printed circuit board PDS premises distribution system Personal Communications Personal communications provides at least one

发表于:2019-01-03 / 阅读(82) / 评论(0)

电信英语

雅思听力环保主题

听力考试一直以来都是中国语言学习者在顺利通过英语考试的过程中的一个老大难问题。有不少的考生在英语的读，写，译等诸多方面都表现出了很强的实力，可是偏偏在英语听力这个部分出

发表于:2019-01-08 / 阅读(112) / 评论(0)

雅思英语

生活因为希望才快乐

生活有希望，才快乐。在好莱坞人人都梦想得到奥斯卡奖，连乞丐都满怀着希望，乞丐要饭时，旁边立了块牌子，上面写着： Help keep my Oscar Hopes Alive. 帮帮忙，让我保持我的奥斯卡希望。对生

发表于:2019-01-08 / 阅读(63) / 评论(0)

英语美文

美语中的感叹词用法

美语中，一些感叹词的意义跟字典上的解释不尽相同，要在日常生活中才能体会到。让我们看看以下几个例子： Oh的字典意义是嗬；哦；哎呀，表示惊讶、的恐惧等。但将这个词连起来用，却

发表于:2019-01-09 / 阅读(74) / 评论(0)

实用英语

职业技术英语口语第85期:环境问题空气污染

Air pollution 空气污染 A: I've heard of ground-level ozone but can you explain what it is exactly? A:我听说近地面臭氧，但是你能确切解释一下是什么吗？ B:Yes, it's one of the main air pollutants. Factories don't emit it dire

发表于:2019-01-14 / 阅读(67) / 评论(0)

职业技术英语口语

3D Printer

Science Fiction-style replications, as seen in TV shows like Star Trek, might be a step nearer to becoming reality. Digital technology means it's now possible to make 3D objects from downloaded designs. Our reporter Li Dong has the details. These fun

发表于:2019-01-19 / 阅读(71) / 评论(0)

世界各地新闻集锦

购物英语对话-Exchanging a DVD Player(1)

A: May I exchange this DVD player? B: Certainly. Do you have your receipt? A: Here you are. B: Now, why do you want to exchange it? A: It won't play a DVD. B: I'm sorry. I'll get you a new player. A: At first, I thought it was me. B: Okay, here's a n

发表于:2019-01-20 / 阅读(100) / 评论(0)

购物英语对话

购物英语对话-Exchanging a DVD Player(2)

A: I'd like to exchange this DVD player. B: Of course. Do you have your receipt? A: Here it is. B: Now, could you tell me why you want a different one? A: It refuses to play my DVDs. B: That's strange. Let me get you a new one. A: All my friends trie

发表于:2019-01-20 / 阅读(59) / 评论(0)

购物英语对话

纯正英语一分钟-ozone layer

发表于:2019-01-21 / 阅读(107) / 评论(0)

纯正英语一分钟

PBS高端访谈:南极臭氧层空洞有所缩小

HARI SREENIVASAN, PBS NEWSHOUR WEEKEND ANCHOR: Scientists studying climate change in Antarctica reported this week that the hole in the protected ozone layer of the earth's atmosphere has shrunk. The discovery of the hole in the mid-1980s led to a wo

发表于:2019-01-27 / 阅读(72) / 评论(0)

PBS访谈环境系列

Official cars ordered off roads during hazardous pollution

BEIJING, Jan. 29 (Xinhua) -- Thirty percent of official cars in Beijing should not be used when there is extremely bad pollution, traffic authorities confirmed Tuesday. The order was implemented on Monday evening to help combat the fourth round of he

发表于:2019-02-04 / 阅读(190) / 评论(0)

英语新闻

口语:周末了我们去滑雪吧

口语:周末了我们去滑雪吧 1. Layer up 一层一层把自己裹起来 Although it can be tempting to purchase the biggest, thickest items of clothing for a ski holiday, the best way to maintain heat is by layering lots of thin layers. When y

发表于:2019-02-09 / 阅读(63) / 评论(0)

英语口语

常用英语口语：寄印刷品

M: Excuse me! W: May I help you? M: Yes, I'd like to send this book to France. W: Let me weight it first. That'll be 14 dollars. M: Can it go in an envelop? W: Of course, it's 4 dollars now. M: Do I need stamps? W: No, you don't. We use computers now

发表于:2019-02-21 / 阅读(46) / 评论(0)

英语口语

你不来我不敢老去

你不来我不敢老去 Actually, I'm old That I've to let the small tree in front of the door for me shed the leaves off I'm too old as to shell off a layer of earth And another layer of earth once more Seeing these layers of earth I know that goi

发表于:2019-02-25 / 阅读(63) / 评论(0)

阅读空间

雅思范文：能源危机的解决

此题感谢lgc，是6月28日雅思写作大题目。关于能源危机的解决。此文思路清晰，结构除了建议部分稍显单薄，还是十分合理的，最关键的是本文的词汇功力，可以看出作者应该按照我上课的要

发表于:2019-02-26 / 阅读(135) / 评论(0)

雅思英语

最新学习文章

热门学习文章

热门标签

英语听力 VOA标准英语 VOA 英语歌曲口语听力提高听力材料听力教程英语学习 NPR 英语口语 VOA慢速英语美国国家电台儿童英语 VOA英语小学英语 cnn VOA常速英语标准英语英文歌曲听电影学英语英语单词英文电影慢速英语 CRI 美联社新闻美国有线新闻加州分级澳洲新闻流行歌曲常速英语 ABC新闻快递疯狂英语英语读物听力棚车少年经济学人英语词汇商务英语 VOA双语新闻 BBC 中国电台大学英语 Treasures 加州语文 BBC英语英语听力网站 VOA英语教学词汇万花筒 SSS VOA英语听力 AP 新概念分级英语英语广播听力精选英语播客英文绘本 TED演讲赖世雄英语MP3 CCTV9英语新闻 lesson 英语新闻初中英语学英语英语语法历史上的今天英文广播剧英语游戏原版英语小说英语有声读物书虫英语牛津英语读物访谈录新闻一分钟考研英语英语每日在线听新闻 Us 新概念英语地道英语单词第二册自然百科高中英语 sports 实用英语 MP3听力辛沛沛 ESL英语第一册英语每日一句 unit 新东方 GRE 每日一词 BBC听力

学英语单词

aberrant ureter

abscess drainage

airstair

arithmetic operations

arrow's impossibility axiom

artificial deposition

bar theory

batch reactor

bee-flower

Bell operating company

bidenticulatus