[化] 六苯乙烷

There are many arguments about the advantages and disadvantages of examinations. Some people think that examinations can help them review the lessons regularly, while others maintain that too many examinations have frustrated them. To me I think an e

发表于:2018-11-28 / 阅读(177) / 评论(0) 分类 疯狂英语易背作文

[00:00.00]Module 1 LEARNING METHODS [00:05.54]Unit 3 Some of the exams were very difficult. [00:11.24]4 Listen and complete. [00:15.06]Mum,I have my report here. [00:18.39]Great. Can you give it to me,please? [00:21.26]Sure. [00:22.78]Oh, this is for

发表于:2018-12-04 / 阅读(146) / 评论(0) 分类 外研社新标准初中英语九年级

New IMAX Space Documentary Brings Images to Life 新的3D IMXA给生活带来新的享受 What we watched then were blurry and grainy TV transmissions. Now, the 45-minute IMAX documentary puts the aud

发表于:2018-12-08 / 阅读(101) / 评论(0) 分类 VOA2005(下)--环境科学探索

Many of the Burgess specimens have now been assigned to living phyla just where Walcott put them in the first place. 许多布尔吉斯标本现在已经归到活着的动物的门里就是沃尔科特最初放置它们的地方。 Hallucigenia and s

发表于:2018-12-18 / 阅读(144) / 评论(0) 分类 万物简史

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro

发表于:2018-12-24 / 阅读(116) / 评论(0) 分类 Scientific American(三)月

Fun Fact: Alligators Can Regrow Teeth 有趣的事实:短嘴鳄可以再长牙齿 Fun fact about alligators: they can regrow any of their eighty teeth up to fifty times. Which is pretty impressive, especially compared to us relatively dentally chal

发表于:2018-12-28 / 阅读(90) / 评论(0) 分类 初学者听力文摘精选

its time again for the A Moment of Science mailbag. A listener writes: Dear A Moment of Science, Ive always been fascinated by volcanoes. So I was wondering: How well can scientists predict when and where a volcano will erupt? Intersting question. Th

发表于:2018-12-31 / 阅读(87) / 评论(0) 分类 英语听力文摘 English Digest

By Nancy Steinbach EDUCATION REPORT -July 25, 2002: SAT Examination This is the VOA Special English Education Report. Each year, millions of people around the world apply to study at American colleges

发表于:2019-01-06 / 阅读(120) / 评论(0) 分类 教育与新闻

This is Scientific American's 60-Second Science. I am Steve Mirsky.Got a minute? Talk about your vicious cycles. A new study finds that belly fat could be making you hungrier. Which would lead to more belly fat. The research was performed at the Univ

发表于:2019-01-08 / 阅读(134) / 评论(0) 分类 Scientific American(四)月

Algae seem harmless enough. These precursors to plants thrive throughout the world's waters. But these single-celled plants have global consequences. We can thank them for oxygen in the atmosphere, oil in the lithosphere as well as dead zones in the

发表于:2019-01-08 / 阅读(132) / 评论(0) 分类 Scientific American(十一)月

By Michael Bowman Washington 24 August 2006 A U.S. congressional committee has issued a report alleging major gaps in U.S. intelligence on Iran's nuclear program and calling for a concerted effort to improve America's information-gathering capabili

发表于:2019-01-11 / 阅读(225) / 评论(0) 分类 2006年VOA标准英语(八月)

VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Bob Doughty. VOICE TWO: And I'm Faith Lapidus. This week, we will tell about newly-found organisms that are said to be among the oldest living organisms on Earth. And, we will tell a

发表于:2019-01-11 / 阅读(117) / 评论(0) 分类 VOA慢速英语2009年(五)月

Technology Report - Scientists Develop Smartphone App for Eye Exams This is the VOA Special English Technology Report. More than two hundred eighty million people around the world have vision problems or are blind. The World Health Organization says

发表于:2019-01-12 / 阅读(125) / 评论(0) 分类 2011年VOA慢速英语(五)月

By Andre de Nesnera Washington 20 April 2006 As Iran continues to defy the United Nations Security Council by enriching uranium -- a process that could lead to building nuclear weapons -- the internat

发表于:2019-01-13 / 阅读(160) / 评论(0) 分类 2006年VOA标准英语(四月)

'Terrorists in Love' Examines Islamic Radicals How does a young man transform from a law-abiding middle-class citizen into a terrorist? Ken Ballen, a former federal prosecutor, spent five years trying to find answers to that question. The result is a

发表于:2019-01-13 / 阅读(126) / 评论(0) 分类 VOA标准英语2011年(十一月)

By Sean Maroney New York 20 June 2007 In 1967, Israel countered what it saw as a threat of annihilation by its neighbors and defeated three Arab armies in six days. As a result, Israel nearly tripled the terroritory under its control and began an occ

发表于:2019-01-31 / 阅读(145) / 评论(0) 分类 2007年VOA标准英语(六月)

By Scott Stearns Dakar 10 November 2009 Prosecutors at the U.N. Special Court for Sierra Leone have begun their cross-examination of former Liberian President Charles Taylor who is facing charges of war crimes and crimes against humanity. Former Lib

发表于:2019-02-02 / 阅读(101) / 评论(0) 分类 VOA标准英语2009年(十一月)

By Deborah Tate Washington 18 July 2006 The Bush administration's nuclear accord with the Indian government was the focus of a Senate committee hearing Tuesday, with witnesses underscoring the benefits to both the United States and India. ---------

发表于:2019-02-03 / 阅读(188) / 评论(0) 分类 2006年VOA标准英语(七月)

By Deborah Tate Washington 12 July 2006 The Bush administration - pressing Congress to complete immigration reform legislation, is highlighting the contributions immigrants make to the U.S. economy. Carlos Gutierrez testifies on Capitol Hill, Wednes

发表于:2019-02-04 / 阅读(138) / 评论(0) 分类 2006年VOA标准英语(七月)

WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo

发表于:2019-02-04 / 阅读(258) / 评论(0) 分类 英语新闻
学英语单词
-tiazem
actiniums
air-feed leg drill
anchoritesses
axle assembling stand
bad-cop
Bedfordshire clanger
Berbines
biogeographic realm
check into
come down handsome
consulatnt service
control submarine chaser
corticosteroid myopathy
crystallographic axial ratio
diagenetic dolostone
diariamente
DIOX
dipygus tripus
drainage way
dynamic assembly of picture
eglantines
EHCS (electro hydraulic control system)
el camino
elastic-rebound
engine overhaul
enhaste
Ernest Shackleton
family Corynebacteriaceae
fertilizer efficiency
flittingly
frontal plain
full scale wind tunnel
gas mantles
gatherted
geographic square aearch
glomerulotubular
GTC order
gutirrez
hand someone his hat
high-temperature ductility
ianthinito
imparipinnate
insipiently
Isobicina
isolated adaptive routing
iterative division
Iława
karrons
kerb appeal
komega
Kondremul
lackners
line contact bearing
linear alkylate sulphonate
lobolos
magnesium copper sulphide rectifier
man-killers
maritime rescue
miscoined
offin'
On-the-Run Issue
order wire speaking key
orientationally
palm phone
perlocutionary
plumpe
porter's anchor
press hardening
pressure equilibrium constant
prop hydrotropism
protectivenesses
pulse detonation engine
reciprocating-plate feeder
reed indicator
reversibilities
Revolutionary Proletarian Army
rim of the flywheel
ringmagnet phone
rutenite (jaipurite)
sand sluicing canal
seam binding
ship lost or not lost
single species
slbc
smash product
split pastern
subconfluent
surge margin
swaits
tapped out
trabzonspor
triade
unfilmed
veno-occlusive disease of the liver
vibration measurement instrument
volando
warnage
wheel brake cylinder
xiao
you'ren't
zoophytic