高效[能]薄层分析仪

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(533) / 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(225) / 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(149) / 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(192) / 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(157) / 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(104) / 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(235) / 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(166) / 评论(0) 分类 202 Useful Exercises for IELTS

This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a Minute? What's the best way to find out if an unknown mixture contains a specific substance, like an environmental contaminant? You could use an expensive, bulky gas chromatogr

发表于:2019-01-08 / 阅读(188) / 评论(0) 分类 Scientific American(八)月

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(170) / 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(185) / 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(162) / 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(119) / 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(110) / 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(154) / 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(189) / 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(186) / 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(137) / 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(153) / 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(145) / 评论(0) 分类 求职英语
学英语单词
2-tetradecene
A checks
Aerobacter levaus
anticlinanthous
autologous serum hemolysis test
baixas
baked fresh ham
beeftree
Bertiella mucronata
breaking-up price
cameleopards
canaliculi of bone
Chrysoflagellida
cisaprides
colour passbands
concentrated liquid developer
conditional binding receipt
connecting method of consumer with heat-supply network
conserves
cover folding
deflationary monetary and fiscal policy
delivery points
derrick boom for dipper
differential winding
diplacin
double disharmonic hearing
dry shaver motor
echiodon coheni
electronic channel
Endabash
euroforms
flow-charting
flowy
fortran identifier
fractional porosity
friction-compensated
full-journal bearing
Galera, Cerro
geoeffective
Hawaiki
heat up and cool down rate
high pressure dyeing
hydrodynamical particular
institute of marketing and industrial market research
interwinding capacity
jet atomizer
karoes
Katwijk aan den Rijn
Kohlu
La Rhune
Little Pend Oreille National Wildlife Refuge
longitudinal thoracic vein
look nut
lower filling knife
magog
make sth out
matrix basis
maximum tire speed
metalcore
midfoot
muelleri
nervi mandibularum
net unit value
Nevskoye, Ozero
observation room
ostil
overbilled
overriding a veto
pae
peace sign
personative
photolithograph
planktology
prathion
private management domain (prmd)
process monitoring system
proprietary agent
Quanzhou kilns
Radoszewice
reform in education
relative generation number
rifled bore
RMSE (root-mean-square error)
round set hammer
script graphics tablet
self-sufficient economy
shrink-ring of commutator
source authentication
straightbead
straw-poll
Talets, Ozero
th-grade
the underprivileged
tirelarigot
traffic barring
troopials
typhodial
unimplied
vertical sounding
wenchy
Xinmin
zeolite water softening