单词：aluminum phenoxide
单词：aluminum phenoxide 相关文章
This is the VOA Special English Development Report. Researchers say they have found a way to extend the storage life of a drug used to treat H.I.V. Their work could give infected mothers in the developing world a new way to prevent the spread of the
2010年VOA慢速英语(五)月
New Documentary Explores Aluminum's 'Dark Side' Aluminum is everywhere, including in products that make us feel better, safer and cleaner. Like antacids, sunscreen and antiperspirants. But Austrian filmmaker Bert Ehgartner says theres another side to
VOA标准英语2013年(五月)
Andrea: Hello, Im Andrea Rose and youre listening to bbclearningenglish.com. Today in Entertainment, we speak to well-known American horror writer Stephen King, who has just released his new novel, Blaze. The author of over 50 best-selling horror no
Entertainment
TEST 3 Listen carefully to the conversations and short passages [00:07.99]and choose the best answer to each of the questions. [00:13.56]1.A)She is pitiful. B)She is too shy to apply. [00:33.41]C)They are afraid of her. D)She is intelligent. [00:41.2
英语六级听力练习集锦
1. cellophane /'seləfeɪn/ -- cellulose substance that shows through; transparent cellulose substance used as a wrapper When used as a wrapper, cellophane lets the purchaser see the contents of the package. 用玻璃纸包装使购买者能看到包内
突破英文词汇
Hungry Lasagna So you made lasagna last night, and it was delicious. You saved the leftovers by wrapping aluminum foil over the top of the pan, and putting it in the fridge. When you get hungry today, you go to look for that lasagna, but it looks lik
英语听力文摘 English Digest
Stephen Foster, 1826-1864: America's First Popular Songwriter He wrote more than two hundred songs during the eighteen forties and eighteen fifties. VOICE ONE: I'm Shirley Griffith. VOICE TWO: And I'm Steve Ember with the VOA Special English program
名人轶事
How does acid deposition affect human health? We eat food, drink water, and breathe air that has come in contact with acid deposition. Canadian and U.S. studies indicate that there is a link between t
知性英语
PEOPLE IN AMERICA -October 20, 2002: Stephen Foster By Shelley Gollust (Photo - University of Pittsburgh) VOICE 1: I'm Shirley Griffith. VOICE 2: And I'm Steve Ember with the VOA Special English progr
People in America
What Stephen Covey Taught Me About Work and Life My heart is heavy today. I just learned of the death of one of the most influential individuals in my life, a man who changed the way I think about the world and who guided me toward my current career
阅读空间
I like to joke that I am who I am today because I did everything wrong in my 20's. I've always been fearless, and it often got me in trouble. I wasn't afraid to start a business, borrow a bunch of money, or quit a well-paying job to travel the world.
英语美文
Several accords signed to boost relations between Turkey and Cameroon Ntaryike Devine, Jr. | Yaounde, Cameroon 17 March 2010 It was the first trip to Africa for the Turkish president, who arrived in Cameroon yesterday accompanied by 120 businessmen,
VOA标准英语2010年(三月)
AUDIE CORNISH, HOST: The White House is postponing most of its steel and aluminum tariffs for at least another month. Tariffs were due to kick on - to kick in on a number of countries at midnight tonight. They're part of a broader effort to crack dow
2018年NPR美国国家公共电台5月
DAVID GREENE, HOST: A lot of the aluminum and steel we use here in the United States is imported from other countries. And that, according to a report from the Commerce Department, is a threat to national security. Last week, department officials rec
2018年NPR美国国家公共电台2月
Soon after taking up his position, Davy began to bang out new elements one after anotherpotassium, sodium,magnesium, calcium, strontium, and aluminum or aluminium, depending on which branch of English you favor. 上任不久，戴维开始宣布发现一
万物简史
By Nina Maria Potts Brussels 05 April 2007 Watch Biofuels report The EU is emerging at the forefront of the fight against climate change. Pledging to cut greenhouse gas emissions by 2020 and boost renewable sources, EU politicians seem keener than e
2007年VOA标准英语（四月）
U.S. retail sales fell half a percent in June providing more evidence that the U.S. economic recovery will slow down in the second half of the year. But the weaker than expected consumer spending appeared to have little impact on Wall Street as inves
VOA标准英语2010年(七)月
Congratulations, you've arrived on the hottest surface in the solar system. Here, the official temperature is eight hundred seventy degrees Fahrenheit. Day or night, equator or pole, the searing heat never varies more than a few degrees, and thats wh
自然百科2012年
Building a Better Mirror for Telescopes 为望远镜打造更优质镜面 To study the heavens, it's all about the photons. We in astronomy are always greedy. We want every photon we can collect. Drew Phillips, astronomer at University of California
2017年Scientific American(九)月