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

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

小学英语词汇 xy

[00:00.00]year [00:02.49]年 [00:04.99]yellow [00:08.10]黄色的 [00:11.21]yes [00:14.00]是，是的 [00:16.80]yesterday [00:21.05]昨天 [00:25.31]you [00:27.66]你 [00:30.01]young [00:33.23]年轻的 [00:36.44]your [00:38.77]你的

SSS 2009-04-22

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Just when you thought youd heard everything, scientists have found that the reason you can hear everythingincluding things that are very quietis because

英文书摘精选 How Does Ice Cool Drinks?冰块是如何使饮料冷却的?

Heres something we tend to take for granted: drop a few ice cubes into a glass of water at room temperature, and in a few minutes the water will cool. How does this work? 有件事情我们总觉得理所当然：室温下把一些冰块放入水中，

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

英语听力文摘 English Digest 620、冰块如何使饮品冷却？

How Does Ice Cool Drinks? Heres something we tend to take for granted: drop a few ice cubes into a glass of water at room temperature, and in a few minutes the water will cool. How does this work? Heat is a measure of molecular activity: the faster a

英语博客：Xyla

Xylitol is a wood sugar that I've been using for a few years. It has many benefits. A dentist friend(1) told me that because its molecular structure(2) is different to normal sugar, plaque bacteria cannot absorb it; they try to, but they can't. Becau

60秒科学:Water Blankets Forming Planets

Water Blankets Forming Planets A study in the journal Science finds much more molecular water in regions where planets are forming around young stars. The mechanism to keep the water from being destroyed by UV radiation appears to involve some of the

音乐咖啡厅:Blaxy Girls - If You Feel My Love

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SSS 2009-10-07

The 2009 Nobel Prize in Chemistry goes to Venkatraman Ramakrishnan of the MRC Laboratory of Molecular Biology in England, Yale Universitys Thomas Steitz, and Ada Yonath of the Weizmann Institute of Science in Israel for their studies of the ribosome.

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高中英语人教版高一年级上18

[00:11.60]WARMING UP [00:16.04]How many new uses can you think of for the folowing items? [00:36.49]reminds us of the appearance of nanotechnology, [00:53.76]according to which nothing is useless and [01:04.91]no garbage or waste material to speak of

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

科学美国人60秒 SSS Nobel in Chemistry for Molecular Machines

This years Nobel Prize in Chemistry is about the worlds smallest machines. G?ran Hansson, secretary general of the Royal Swedish Academy of Sciences, earlier this morning. The Royal Swedish Academy of Sciences has decided to award the 2016 Nobel Priz

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

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

纯正英语一分钟-ozone layer

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

经济学人141:癌症与肥胖

Sicience and technology 科学和技术 Cancer and obesity 癌症与肥胖 Malignant flab 恶性松弛 At last, an understanding of how overeating causes cancer 吃得过多如何导致癌症 OVERWEIGHT women are more likely to develop breast cancer

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