[化] 叔丁氧基

This is Scientific American's 60-Second Science. I am Adam Hamterture, got a minute? What's sixteen feet tall and 9,550 years old? Its the world's oldest tree. The worn and weathered spruce grows in Sweden's windswept tundra. But, until recently, wel

发表于:2018-12-24 / 阅读(129) / 评论(0) 分类 Scientific American(五)月

86 去痛片须慎用 DATE=8-16-01 TITLE=SCIENCE REPORT - OxyContin Warning BYLINE=Jerilyn Watson (Start at 1'02

发表于:2019-01-02 / 阅读(172) / 评论(0) 分类 科技之光

By Phuong Tran Dakar 14 January 2007 Miners handle stones on a hilltop of Mbola mines in Democratic Republic of Congo (File photo) The collapse of a diamond pit mine in the Democratic Republic of Congo earlier this month, in which 15 people were repo

发表于:2019-01-06 / 阅读(200) / 评论(0) 分类 2007年VOA标准英语(一月)

1. 9/11 attack ringleader Mohamed Atta is all smiles with another hijacker on a new video reportedly Atta's last will. The Associated Press secured exclusive rights to the video from the London Sunday

发表于:2019-01-08 / 阅读(227) / 评论(0) 分类 美联社新闻一分钟2006

1. Two more Amish schoolgirls died overnight following a deadly shooting in their one-room schoolhouse in Pennsylvania Monday. That brings the total number of girls fatally injured in the incident to

发表于:2019-01-08 / 阅读(163) / 评论(0) 分类 美联社新闻一分钟2006

By Dan Robinson Capitol Hill 26 October 2006 As members of Congress campaign for the upcoming legislative election, back in the U.S. Capitol a congressional ethics committee completed the third week of an investigation that could yet have a major im

发表于:2019-01-11 / 阅读(236) / 评论(0) 分类 2006年VOA标准英语(十月)

By Dan Robinson Washington 03 October 2006 The controversy over a former Republican congressman who resigned amid revelations he sent sexually suggestive messages to male pages continues to reverberate in Washington and across the United States. Pre

发表于:2019-01-11 / 阅读(177) / 评论(0) 分类 2006年VOA标准英语(十月)

STEVE EMBER: Im Steve Ember. BARBARA KLEIN: And Im Barbara Klein with EXPLORATIONS in VOA Special English. Today we talk about a method that helps provide low-income people with the financial services they need to improve their lives. Organizations a

发表于:2019-01-11 / 阅读(228) / 评论(0) 分类 2010年VOA慢速英语(六)月

By Dan Robinson Capitol Hill 13 October 2006 Several issues are expected to be key in influencing how people vote in next month's U.S. congressional elections, from public perceptions about President Bush's handling of the war in Iraq, [and] the sta

发表于:2019-01-16 / 阅读(175) / 评论(0) 分类 2006年VOA标准英语(十月)

Beginners. Well, it's time for a new dog. For the past year, we have been a one dog family. But, you know, our dog, Rosie, is a wildly social lady. She goes crazy any time she meets another dog, a cat, a mouse, or a bird, let alone a human. But, the

发表于:2019-01-28 / 阅读(147) / 评论(0) 分类 英语博客 A cup of English

By Melinda Smith Washington 14 May 2007 Top executives of the company that makes a powerful painkiller called Oxycontin admitted this week they lied about the drug's addictive qualities in order to boost sales. As VOA's Melinda Smith reports, worldwi

发表于:2019-02-03 / 阅读(193) / 评论(0) 分类 2007年VOA标准英语(五月)

By Dan Robinson Washington 05 October 2006 Majority Republicans in the House of Representatives have moved to prevent further damage from the scandal involving a former Republican congressman, Mark Foley, who resigned amid revelations he sent sexual

发表于:2019-02-03 / 阅读(152) / 评论(0) 分类 2006年VOA标准英语(十月)

By Dan Robinson Capitol Hill 10 October 2006 The Republican Speaker of the House of Representatives has pledged to fire anyone on his staff who may have tried to cover up improper Internet contacts between a former Republican congressman, Mark Foley

发表于:2019-02-03 / 阅读(148) / 评论(0) 分类 2006年VOA标准英语(十月)

By Dan Robinson Capitol Hill 15 November 2007 The longest-serving Republican speaker of the House of Representatives gave his formal farewell to Congress on Thursday. Dennis Hastert presided over the House for nearly a decade, a period that included

发表于:2019-02-03 / 阅读(149) / 评论(0) 分类 VOA常速英语2007年(十一月)

By Dan Robinson Washington 10 December 2006 Democrats and Republicans in the House of Representatives have combined conciliatory rhetoric with criticism over legislative goals as Congress moves toward adjournment. VOA's Dan Robinson reports from Cap

发表于:2019-02-05 / 阅读(186) / 评论(0) 分类 2006年VOA标准英语(十二月)

By Dan Robinson Capitol Hill 04 October 2006 An ethics committee in the House of Representatives meets Thursday amid the continuing scandal involving a former U.S. congressman, Mark Foley, and sexually explicit e-mails he allegedly sent to congressi

发表于:2019-02-05 / 阅读(178) / 评论(0) 分类 2006年VOA标准英语(十月)

Beginners. Today, Foxy had an appointment with the vet for vaccinations and a general check-up. She is about eight months old, so she needed her second set of vaccinations. The vet also needed to see if her growth was normal and healthy. I put her in

发表于:2019-02-07 / 阅读(172) / 评论(0) 分类 英语博客 A cup of English

RIO DE JANEIRO, Jan. 25 (Xinhua) -- Former Brazil international goalkeeper Dida will miss Gremio's Copa Libertadores qualifying decider against Ecuador's Liga de Quito next Wednesday with a shoulder injury. Dida hurt his right shoulder during last We

发表于:2019-02-18 / 阅读(153) / 评论(0) 分类 英语新闻
学英语单词
a toss - up
AAMIH
abronias
absorbable gelatin film
all one to
apprenticetraining
aromatic castor oil
as big again as
bailout bottle
be alone
beautifying
berels
bowling crease
break out into
Bromus erectus
buckhornite
busbar-protection
carbamate insecticides
caseiform
centrifugal water-packed gland
channel section steel
chizel
chromatic colour
clipping of noise
combustion unit
convenable
coped with
cousin-in-law
cross-hatch bubble device
cuadro flamenco (spain)
Damaturu
deferred constant
demichelis
deodourant
distribution circuit
dohong (tohong)
dry(gas)fractional(concentration)
east-wests
economic courts
fiber product
fire-righting
flou
forecast score
form context
fudge nuts
full-skirted
hardware address control
high-frequency bipolar transistor
Hornie
hydrogrossularite
hypsicephalic
ice-contact sediments
in terms
Iwon-man
jillian
kendi
known solution
lenner
Lokolenge
longicorn beetles
Luvia
Maselheim
mastonia aegle
messcook
monolithic integrator circuit
morbilli
oiran
ortho-formaldehyde
ouari
panormium
permacultures
phonemic morpheme
plasma tail
profixes
Proteus fluorescens
random access memory computer
re-looking
saturated voltage
saucing
screw the arse off
sequential mental process
ship-borne weather instrument
sine motor
sit at the desk
skivvy
something rare in the world
steaming out
steel one's heart to do something
tab settings
taxoid
taxs shield
teldra
the famous
Tipulidae
unswabbed
urrutia
water sealed gas holder
wellfeathered
wetting treatment
wifty
xylaria moelleroclavus
yersinia ruckeri