[化] 长链碳化合物

Section A [00:01.23]1. W: Have you checked it for me? [00:04.26]M: Yes.There are temporary vacancies at the moment,but you may look back in a month. [00:09.40]Q: What does the woman want to be? [00:12.38]2. M: I'd like to book a flight to Munich for

发表于:2018-11-29 / 阅读(273) / 评论(0) 分类 决胜四级听力必备

Scott:I think that's very possible. We believe a carefully crafted carbon program is something that probably is inevitable and probably positive. What we would ask is that people be mindful of the general population and not be so ideological that we

发表于:2018-12-04 / 阅读(131) / 评论(0) 分类 世界500强CEO访谈

As humans developed civilizations in Eurasia and Northern Africa, they also domesticated animals for food and labor: horses, cows, goats, pigs, sheep and a few others. But no evidence existed for the deliberate cultivation and breeding of animals in

发表于:2018-12-24 / 阅读(120) / 评论(0) 分类 2016年Scientific American(八)月

This is Scientific Americans 60-SecondScience. Im John Matson, got a minute? Say you need a diamond. You could go downto the jeweler, or you could put some carbon deep underground and let it sitfor a couple billion years. Or you could hop in a starsh

发表于:2018-12-24 / 阅读(143) / 评论(0) 分类 Scientific American(八)月

节奏蓝调:Alicia Keys动情英文新歌 美国著名女歌手Alicia Keys的最新专辑《The Element of Freedom》的首支单曲Doesn't Mean Anything。 Artist:Alicia Keys Song:Doesn't Mean Anything Used to dream of being a millionaire, wi

发表于:2019-01-07 / 阅读(169) / 评论(0) 分类 流行英文歌曲

It seemed like a good ideabecause rivers and ponds in Bangladesh were contaminated with bacteria, Bangladeshis switched to wells. But soon after, in the early 80s, researchers realized those wells were harming Bangladeshis with a new poisonarsenic. T

发表于:2019-01-08 / 阅读(157) / 评论(0) 分类 Scientific American(十一)月

AGRICULTURE REPORT - Scientists Find Compound in Smoke that Helps Seeds Grow By Mario Ritter Broadcast: Tuesday, July 20, 2004 This is Steve Ember with the VOA Special English Agriculture Report. A di

发表于:2019-01-11 / 阅读(196) / 评论(0) 分类 农业与发展

AS IT IS 2013-06-19 Citizen Scientists to Help Map CO2 Gas Each red dot on this screen shot from the Ventus website represents a power plant Welcome to As It Is, the daily magazine show from VOA Learning English. Im Mario Ritter. A music video shot i

发表于:2019-01-12 / 阅读(154) / 评论(0) 分类 2013年VOA慢速英语(六)月

AS IT IS 2013-05-29 A Call for Citizen Scientists to Help Map CO2 Gas Welcome to As It Is, the daily magazine show from VOA Learning English. Im Mario Ritter. A music video shot in space? That is now a reality. Today, we hear how Skylab led the way f

发表于:2019-01-12 / 阅读(176) / 评论(0) 分类 2013年VOA慢速英语(六)月

The United Nation's World Food Program says rogue members of Somalia's extremist al-Shabab group attempted to raid its compound late Sunday in the Somali town of Wajid, about 300 kilometers northwest of Mogadishu. World Food Program spokesman, Peter

发表于:2019-01-14 / 阅读(229) / 评论(0) 分类 VOA标准英语2009年(八月)

Exercise 11-9: Your Compound Nouns and Complex Verbs CD 4 Track 46 Using your compound nouns from Ex. 11-8, choose a verb and putit through all the changes.Remember that it helps to have a verb that startswith a vowel. Add explanatory words to round

发表于:2019-01-15 / 阅读(141) / 评论(0) 分类 标准美语发音的13个秘诀 CD4

What do these five words have in common: hotdog, fireworks, well-being, waistline, sunset and ice cream? They could all describe a fun holiday celebration. For example: My holiday was wonderful! I went to a friends party and we laughed, ate and had a

发表于:2019-01-21 / 阅读(248) / 评论(0) 分类 2018年VOA慢速英语(十二)月

Grammar Girl here. Today's topic is hyphens. On Monday afternoon Pat was watching the cable channel CNBC and called me over to the TV because the hosts were talking about hyphens. Yup, in the middle of a segment on the economy, they started talking a

发表于:2019-01-30 / 阅读(281) / 评论(0) 分类 英语语法 Grammar Girl

By Elizabeth Carlassare. Todays topic is compound interest. Albert Einstein is often quoted as having said something to the effect that compound interest is the greatest wonder of the universe. Its an urban legend, but it packs some punch! In todays

发表于:2019-01-30 / 阅读(225) / 评论(0) 分类 货币英语

By Carol Pearson Washington, DC 13 July 2006 watch Exercise and Aging report Populations in western counties are aging. But this trend is also emerging in developing countries such as China. Keeping people healthy as they age affects not only a coun

发表于:2019-02-03 / 阅读(179) / 评论(0) 分类 2006年VOA标准英语(七月)

Welcome to As It Is, the daily magazine show from VOA Learning English. Im Mario Ritter. A music video shot in space? That is now a reality. Today, we hear how Skylab led the way for astronauts living in a weightless environment for long periods. But

发表于:2019-02-16 / 阅读(139) / 评论(0) 分类 英语语言学习

ISLAMABAD, Feb. 25 (Xinhua) -- The living compound of the former al-Qaida chief Osama bin Laden in Pakistan's northwest city of Abbottabad is being demolished, said one local media report. Local Urdu TV channel Express said that the front part of bin

发表于:2019-02-18 / 阅读(162) / 评论(0) 分类 英语新闻

Voice 1 Hello, Im Marina Santee. Voice 2 And Im Ruby Jones. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, now matter where in the world they live. Background voice On your m

发表于:2019-02-21 / 阅读(155) / 评论(0) 分类 环球英语 Spotlight

Topics: Famous Americans: Booker T. Washington; things Americans believe are lucky; horribly versus terribly versus awfully; full tuition reimbursement; carbon copy Words: freedmen peer activism accommodating desegregation historically black universi

发表于:2019-02-23 / 阅读(167) / 评论(0) 分类 美语听力 English Cafe

Altogether there is about twenty thousand times as much carbon locked away in the Earth's rocks as in the atmosphere. 总的来说,被关在地球岩石里的碳,大约相当于大气里的2000倍。 Eventually much of that limestone will end up

发表于:2019-02-25 / 阅读(152) / 评论(0) 分类 万物简史
学英语单词
ac magnetic dipole field
adaptive reception
adjag
after one's own heart
ape man
araphia
asiablatta kyotensis
astronomical time scale
attrition medium
barons
benzois condensation
berobs
binsearch
brand purchase decision
builder patterns
burnt contact
Cabuna
castri
chain printers
cheerodon azurio
cigar filler tobacco
colour fastness to mercerizing
companion star
constant pressure flow controller
conveyancing counsel
culicoides (culicoides) gentiloides
disc flower
draw-bar yoke
dwarf astilbe
employee payment for removal
engineer's brake valve spindle
equilibrium flash vaporization
exposable
ferrimagnetisms
Fery pyrometer
flexible bond
Free Choice Principle
give due notice of a lack of conformity
granulomatous laryngitis
gyneco
handling condition
harry-starkers
highset output stage
ICB International Competitive Bidding
Keystone Heights
la-n
legacy tax
lift car annunciator
line of fire
loggerheaded
lxvii
Mahmoodābād
main engine installation
man machine problem solving
marginal data
mean turns
memory logic
mulga scrub
muncy
muntjacks
nonkarmic
nonprogramming user
on-line circuit analysis
onychoses
operating key
otc stocks
overseas investment loss reserve
paganizing
pardusco
peep show
phase conjugate
phenyldiethanol-amine
prorogation
pseudoprotodioscin
rotor cage
salamander-venom antitoxin
Samarang
sax
scurenalien
sea-air interaction
Sexdrega
shoe rack
sickle - cell anemia
solarization image
spatial mean value
sporo-pollen
stereopantometer
superadditive development
surplus to requirements
suttles
Sūrpura
tetraiodophthalein sodium
theme pack
tongue joint with lug
toowomba canary grasses
true precocious puberty
try machine
uslico
van Eyck
verminicide
wirewater
Zhu Jiang