[有机化学] 合成有机化学

Autobiography of Nobel Prize Winner: Jean-Marie Lehn I was born on September 30 1939 in Rosheim, a small medieval city of Alsace in France. My father, Pierre Lehn, then a baker, was very interested in

发表于:2018-12-05 / 阅读(94) / 评论(0) 分类 英语沙龙2004全年合辑下

By Mario Ritter Broadcast: July 8, 2003 This is Steve Ember with the VOA Special English Agriculture Report. Recently, a listener in Nigeria told us about an organization called World-Wide Opportuniti

发表于:2018-12-07 / 阅读(121) / 评论(0) 分类 VOA2003(下)-农业与经济

Blended Organic-Conventional Farming Could Feed World In rural Maryland, an hour-and-a-half drive from Washington, Bill Mason is tilling his fields to plant organic maize and soybeans. About two-thirds of his 340 hectares are organic, but not all of

发表于:2018-12-08 / 阅读(108) / 评论(0) 分类 VOA标准英语2012年(六月)

Sam: Now our count it down to Earth Day. We are showing you how to green in every aspect of your life, how to go green. And we are kicking off this series this morning with Deirdre Imus, the author of Growing Up Green!---Baby and Child Care. Now her

发表于:2018-12-11 / 阅读(68) / 评论(0) 分类 访谈录2008

1. What's your major in college? 你的专业是什么? 2. What did you major in? 你的专业是什么? 3. What are you majoring in? 你的专业是什么? 4. Why are you so interested in English? 为什么你对英语那么感兴趣? 5. I t

发表于:2018-12-25 / 阅读(122) / 评论(0) 分类 面试口语脱口而出

There is nothing like the suggestion of a cancer risk to scare a parent, especially one of the over-educated, eco-conscious type. So you can imagine the reaction when a recent USA Today investigation of air quality around the nation's schools singled

发表于:2018-12-27 / 阅读(108) / 评论(0) 分类 英语听力小短文走遍全世界

Murchison Meteorite's Chemical Bonanza The 1969 Murchison meteorite was known to harbor complex organic compounds, but a new analysis in Proceedings of the National Academy of Sciences finds that it may also contain millions of chemicals and shed lig

发表于:2019-01-02 / 阅读(169) / 评论(0) 分类 60秒科学

The United States space agency says its Mars exploration vehicle has discovered chemical substances necessary for life. Scientists reported that NASAs Curiosity rover found large amounts of organic molecules in 3.5 billion-year-old rock in an area ca

发表于:2019-01-03 / 阅读(88) / 评论(0) 分类 2018年VOA慢速英语(六)月

As It Is - Remember Your Chemistry Classes? An international team of researchers recently reported creation of a new element that is 40 percent heavier than lead. The researchers successfully developed what they are calling Element Number 117 at a la

发表于:2019-01-03 / 阅读(126) / 评论(0) 分类 2014年VOA慢速英语(八)月

Broadcast: Mar 17, 2003 Rain hits the 1) shingles on the large covered porch that leads up to David Masumoto's farmhouse. From the porch he can see 90-year-old 2) raisin 3) vineyards his family has te

发表于:2019-01-03 / 阅读(136) / 评论(0) 分类 VOA2003(上)-科技先知

今天我们要学的词是organic。 Organic, 有机的,绿色的。 Organic product, 有机产品。近年来,美国很多消费者开始崇尚绿色、有机食品。不过,统计数字显示, Organic food accounted for only 3.5% of the fo

发表于:2019-01-11 / 阅读(107) / 评论(0) 分类 英语每日一词

AGRICULTURE REPORT - Study Points to Risk in Common Method of Enriching Soil By Jerilyn Watson / Broadcast: Mon, 12 Nov 2007 16:00:00 UTC This is the VOA Special English Agriculture Report. For more than half a century, many farmers worldwide have a

发表于:2019-01-11 / 阅读(113) / 评论(0) 分类 VOA慢速英语2007年(十一)月

AS IT IS 2016-10-05 Nobel in Chemistry Goes to Makers of Worlds Smallest Machines 2016诺贝尔化学奖:世界上最小的机器 Three scientists have won the Nobel Prize in Chemistry for their work in developing tiny machines. The three men are Jea

发表于:2019-01-12 / 阅读(106) / 评论(0) 分类 2016年VOA慢速英语(十)月

More Land Being Used for Organic Farming More land around the world is being dedicated to organic farming. The Worldwatch Institute says since 1999 theres been a more than three-fold increase to 37 million hectares. Organic farming is farming without

发表于:2019-01-13 / 阅读(104) / 评论(0) 分类 VOA标准英语2013年(一月)

Having the opportunity to take on a diverse range of classes such as economics and chemistry along with her music studies is the perfect combination for Diane. Marsha James | Washington DC 10 August 2010 Oberlin Conservatory of Music Student Diane Ly

发表于:2019-01-13 / 阅读(103) / 评论(0) 分类 VOA标准英语2010年(八)月

Voice 1 Hello. Im Marina Santee. Voice 2 And Im Elizabeth Lickiss. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 Milk chocola

发表于:2019-01-19 / 阅读(91) / 评论(0) 分类 环球英语 Spotlight

AGRICULTURE REPORT - Compost: an Organic Way to Better Soil and Crops By Gary Garriott Broadcast: Tuesday, July 05, 2005 I'm Gwen Outen with the VOA Special English Agriculture Report. Many farmers im

发表于:2019-01-30 / 阅读(175) / 评论(0) 分类 农业与发展

By Tom Rivers London 07 October 2009 Ada Yonath (file photo) Two Americans and one Israeli share this year's Nobel Prize in Chemistry for their work showing how the DNA code is translated into life itself. Americans Venkatraman Ramakrishnan and Thom

发表于:2019-02-03 / 阅读(101) / 评论(0) 分类 VOA标准英语2009年(十月)

By Kevin Billinghurst Stockholm 10 October 2007 The 2007 Nobel Prize for Chemistry has been awarded to Gerhard Ertl of the Max Planck Society in Berlin. Kevin Billinghurst has the story from Stockholm. The Royal Swedish Academy of Sciences honors Pr

发表于:2019-02-04 / 阅读(117) / 评论(0) 分类 2007年VOA常速英语(十月)

The Organic Foods Are organically grown foods the best food choices? The advantages claimed for such foods over conventionally grown and marketed food products are now being debated. Advocates of organic foods -- a term whose meaning varies greatly -

发表于:2019-02-25 / 阅读(77) / 评论(0) 分类 双语有声阅读
学英语单词
acarnidine
adjoint group
adjustable blot
admissible estimate
all over oneself
alsip
ammonolysis
at.no.
balsa rafts
barge train towed alongside
bearing instability
bureit
Campbell Town
cardinal newmen
centigrammes
Cherveix
colored lamp
complex impedance measurement
copper emerald
cranking out
Dashbalbar
dhsi
disk stroboscope
downcomer pipe
EFAC
episio
epithelioid glands
esophagorrhea
evolution criterion
expiatory
factored in
fall into disfavor
finance law
flash-evaporation
free problem of fixed-end-point
Gauribidanūr
germanic group
get square with someone
godfatherhood
greater palatine canal
hand throw crossover
heat insulating coat
heteronormal
Highgate Cemetery
Holmes light
indigo white
indirect experience
isolated prime ideal
kinleys
lacrimal groove.
lamiflo
lapse provision
larsp
leaps
Liparis latifolia
LORADS
magnetisable
market prospects
measuring filler
micropyrometer
million - dollar question
miskeyite
Nernsts theorem
nimorazole
normal axis
Onzonilla
pandanaceous
paratoluic acid
patella alta
payloads
perianal abscesses
phosphato-molybdic acid
platinite alloy
poblacion
porctoplegia
pyonephrosis
raticide
regenerated collagen suture
reich-wing
removable subdie
required airflow
Rhododendron bullatum
salicylaldehydes
Salix doii
sanicles
Sauzal
second division
shock countermeasure
singultient
sisymbrium officinales
stern construction
suboptical diffraction pattern
suction valves
swelling chlorite
Torrence, Frederic Ridgely
triocil
tube dryer
unifactor theory
vfss
Volatile.
waveguide twists
well-married