高效薄层层析法

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

发表于:2018-12-01 / 阅读(428) / 评论(0) 分类 上海牛津初中英语九年级

Wednesday's air quality index in Atlanta, Georgia, miles away from any of the fires, was unhealthy. In Chattanooga, Tennessee, it was 151. What exactly does that mean? SUBTITLE: What is the AQI? JENNIFER GRAY, CNN METEOROLOGIST: The one thing you nee

发表于:2018-12-02 / 阅读(136) / 评论(0) 分类 CNN美国有线新闻2017年1月

As the balloons rise higer still,they face an attact by an invisible bombardment,radiation.Every day the Sun radiates a titanic amount of energy,some of them in the form of high energy of ultra violet rays.These rays packed a powerful punch ,and in t

发表于:2018-12-03 / 阅读(58) / 评论(0) 分类 探索与发现2014年

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

发表于:2018-12-04 / 阅读(120) / 评论(0) 分类 听一分钟英文-O

This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? Athletes have obviously been tempted to use performance enhancing anabolic steroids. Drug testing may discourage such use. But a new study finds that some of the perfo

发表于:2018-12-24 / 阅读(96) / 评论(0) 分类 Scientific American(九)月

You could use the balloons not just to go to the edge of the space as we do now,but go all the way over the line, and actually to use balloons or airships to go all the way into space,space travel without rocket.Officially, the atmosphere ends and sp

发表于:2018-12-27 / 阅读(54) / 评论(0) 分类 探索与发现2014年

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

发表于:2018-12-29 / 阅读(150) / 评论(0) 分类 英语课程学习计划和讲义

To be living at the start of the new millenium is to exist in the most advanced technological era in history. It is easy2 to forget that we are still surrounded by countless opportunities to get close to the earth, the sea and all the otherwonders of

发表于:2018-12-30 / 阅读(102) / 评论(0) 分类 202 Useful Exercises for IELTS

By Parke Brewer Washington 30 January 2007 There are 32 teams in the National Football League and only two reach the coveted Super Bowl championship game each season. This Sunday it is the Chicago Bears and the Indianapolis Colts, playing in Miami, F

发表于:2019-01-09 / 阅读(111) / 评论(0) 分类 2007年VOA标准英语(一月)

High-Tech Edge Sharpens Olympic Games At the very first Olympic Games, in 1896, an American won a gold medal in the pole vault event after jumping 3.30 meters using a wooden pole. Four years ago in Beijing, an Australian won gold in the same event wi

发表于:2019-01-13 / 阅读(103) / 评论(0) 分类 VOA标准英语2012年(七月)

So awesome, right? Another example is Pentair. Pentair is a U.S. industrial conglomerate. 很棒,对吧?另一个例子是滨特尔。滨特尔是美国的工业集团。 And about a decade ago,they sold their core power tools business and reinve

发表于:2019-01-18 / 阅读(90) / 评论(0) 分类 TED演讲国际问题篇

听力题目: 17. (A). She chose some music to listen to. (B). She organized some photographs. (C). She read the menu and made a selection. (D). She moved the furniture in the room. 18. (A). Was there a performance last night or not? (B). Which cri

发表于:2019-01-18 / 阅读(63) / 评论(0) 分类 托福听力单句训练

听力题目: 17. (A). She chose some music to listen to. (B). She organized some photographs. (C). She read the menu and made a selection. (D). She moved the furniture in the room. 18. (A). Was there a performance last night or not? (B). Which cri

发表于:2019-01-18 / 阅读(55) / 评论(0) 分类 托福听力单句训练

Science Fiction-style replications, as seen in TV shows like Star Trek, might be a step nearer to becoming reality. Digital technology means it's now possible to make 3D objects from downloaded designs. Our reporter Li Dong has the details. These fun

发表于:2019-01-19 / 阅读(87) / 评论(0) 分类 世界各地新闻集锦

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

发表于:2019-01-20 / 阅读(115) / 评论(0) 分类 购物英语对话

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

发表于:2019-01-21 / 阅读(116) / 评论(0) 分类 纯正英语一分钟

To be honest, we are totally in awe of people whose job is to face these in real life. But the grenade made into this A-to-Z is the Rocket Propelled Grenade, or RPG, because that is what gave us one of the best booms in Mythbusters history. Alright,

发表于:2019-01-23 / 阅读(73) / 评论(0) 分类 探索与发现2013年

U.S. National Research Council calls for more exploration Rosanne Skirble | Washington, DC 08 April 2010 Photo: Smithsonian National Museum of Natural History Rick Potts has led excavations at early human sites in the East African Rift Valley, and cu

发表于:2019-02-12 / 阅读(85) / 评论(0) 分类 VOA标准英语2010年(四)月

April 13,2000P.O. Box 36BIIT UniversityBeijing,China 100000Dear Sir/Madam: Are you searching for a telecommunications manager with expertise in project management and team leadership? I specialize in creating and implementing high-performance strateg

发表于:2019-02-18 / 阅读(79) / 评论(0) 分类 求职英语

Ladies and Gentlemen: please welcome Lakers' president of basketball operations Earvin Magic Johnson. 先生们,女士们,欢迎湖人运营总裁埃文魔术师约翰逊 What's up, Lakers nation? 湖人族,大家好! We are here to celebrate

发表于:2019-02-26 / 阅读(127) / 评论(0) 分类 篮球英文堂
学英语单词
?-ketobutyrate
accrued expenditure basis
acoustic resonance
administrative ecology
admitters
apicella
apocrisiarii
arapeshes
BATAN (Batan Tenaga Atom Nasional)
bead tube
bee radiator
bierd
canned meat
cesium ammonium bromide
check-lists
child acute laryngitis
chuck body
cinetonucleus
circulation channel
coalition for networked information
combustion mode
commoncollector
community coalition action theory
delivery instructions
dimethyl phthalate
Dinophysidales
dipsomaniac
discoidal division
divisional manager
empty field myopia
enchancement factor
engine-maker
epicranial plate
EX-lo
fool's mates
foretopgallantmast
furfurol tests
Gossypium religiosum
ham facing
handprintings
hard vacuum tube
hexahydrobenzyl alcohol
heyman
hull stress measurement
Hutton Lake National Wildlife Refuge
hydrosilylation
image type
impersonal micrometer
in layers
invariant ideal
ioxitalamate
Jehovism
joven
land-minest
lift a ban
light shaft
lophiodont
lower fibre
Maesa ambigua
male screwbolt
Meliau
Meliki
molecular separator
naviculocuboid
nitroglycerins
non-compliance with a warranty
openside plane
operator domain
Osman II
phenylethyla mine-N-methyl transferase
polarizing quartz
pools zone
principle of minimum
quiet internal gear pump
radar tracking control
Roccapalumba
rosin varnish
route cross section
Ruppia maritima
say it
scattering volume
Serinc
shaft misalignment
shoulder-elbow distance
slow setback
SMIDSY
social leader
stare with astonishment
Super Eight
sweerness
TDF (tape data family)
temperate phage
temporary starch
thalrugosaminine
thermoregulatory mechanism
to lie in state
turbulent relaxation phenomenon
unaccompanied shipment
vincinine
Witzhave
wood window
X-ray room