[化] 1,2,3,4-萘四酮

[00:02.28]Dads Mandolin [00:06.89]My father was a self-taught mandolin player. [00:11.14]He was one of the best string instrument players in our town. [00:14.84]He could not read music, but if he heard a tune a few times, [00:19.17]he could play it.

发表于:2018-11-30 / 阅读(175) / 评论(0) 分类 英语专业晨读美文

nobody likes getting shots, but what if you could make the needles so tiny that they broke skin painlessly. engineers from top university have created such micro needles, made from major protein in silk, fibrolin. the work is in the journal of advanc

发表于:2018-12-02 / 阅读(99) / 评论(0) 分类 Scientific American(十二)月

My father was a self-taught mandolin player. He was one of the best string instrument players in our town. He could not read music, but if he heard a tune a few times, he could play it. When he was yo

发表于:2018-12-07 / 阅读(292) / 评论(0) 分类 英语精美散文22篇

From VOA Learning English, this is the Health Lifestyle report. When trying to make a successful career, which is better: being a generalist or a specialist? In other words, should you generalize and know a little about a lot of things? Or should you

发表于:2018-12-08 / 阅读(67) / 评论(0) 分类 2018年VOA慢速英语(十)月

Scientists Discover New Animal 科学家发现新的物种 From VOA Learning English, this is SCIENCE IN THE NEWS. Im June Simms. And Im Bob Doughty. Today we tell about a new animal species native to South America. We tell how agricultural chemical

发表于:2018-12-16 / 阅读(50) / 评论(0) 分类 2013年VOA慢速英语(八)月

Could a Tattoo Cost You a Job? 文身会让你失去工作么? In the 1960s U.S., a tattoo was usually a sign of anti-social or illegal activity. Few people had them. Today, at least one in five Americans has a tattoo, including sports stars, actors

发表于:2018-12-16 / 阅读(86) / 评论(0) 分类 2015年VOA慢速英语(六)月

Man Hopes to Define Every English Word with a Limerick There are many different methods for studying languages and learning new words. One man has come up with his own unusual way to define the meanings of words - through rhyming. He uses words that

发表于:2018-12-19 / 阅读(82) / 评论(0) 分类 2018年VOA慢速英语(三)月

24 MR. AND MRS. ANTOLINI had this very swanky apartment over on Sutton Place, with two steps that you go down to get in the living room, and a bar and all. I'd been there quite a few times, because after I left Elkton Hills Mr. Antolini came up to ou

发表于:2018-12-31 / 阅读(118) / 评论(0) 分类 有声英语文学名著

23 I MADE IT very snappy on the phone because I was afraid my parents would barge in on me right in the middle of it. They didn't, though. Mr. Antolini was very nice. He said I could come right over if I wanted to. I think I probably woke he and his

发表于:2018-12-31 / 阅读(91) / 评论(0) 分类 有声英语文学名著

An ass and an ox,fastened to the same yoke,were draging a waggon.While the ox was pulling with all his might he he broke a horn.The ass swore that he had got no help whatever from his weak companion.Exerting himself in the labour,the ox b

发表于:2019-01-09 / 阅读(160) / 评论(0) 分类 趣味英语

AS IT IS 2014-02-10 What Engineers Do, and How They Learn 工程师们是怎样炼成的,他们平时都做些什么 Hello, and welcome to As It Is from VOA Learning English. Im Christopher Cruise in Washington. Today on the program, we explore the c

发表于:2019-01-12 / 阅读(84) / 评论(0) 分类 2014年VOA慢速英语(二)月

Painting Captures Moments after Lincoln's Assassination 画家用绘画捕捉林肯遇刺时刻 A rare painting showing the moments after U.S. President Abraham Lincoln was assassinated has been cleaned, repaired and restored. The oil painting is nam

发表于:2019-01-12 / 阅读(71) / 评论(0) 分类 2016年VOA慢速英语(五)月

Jonah Hex. Are these the boys you wanted? You surely have done us quite a favor. A transaction is all it was. I'll collect my hundred dollar bounty on them and be on my way. From Superman and Spider Man to Josie and the Pussycats, Hollywood has a lon

发表于:2019-01-13 / 阅读(109) / 评论(0) 分类 VOA标准英语2010年(六)月

SCOTT SIMON, HOST: The fires in Northern California have reminded many Americans of the courage, the heroism of the men and women who fight fires in forests and wilderness. A film called Only The Brave is based on the true story of the 19 Granite Mou

发表于:2019-01-16 / 阅读(63) / 评论(0) 分类 2017年NPR美国国家公共电台10月

LONDON, Aug. 9 (Xinhua) -- Chen Ruolin collected a high 422.30 points for the title of women's 10m platform diving at London Olympic Games on Thursday. It is the 200th gold medal China won from all the summer Olympic Games it participated in. Brittan

发表于:2019-02-07 / 阅读(82) / 评论(0) 分类 英语新闻

地点:莫妮卡与钱德勒的婚礼现场 人物:莫妮卡,钱德勒,菲比,瑞秋 事件:婚礼仪式结束后,摄像师为大家拍照留念,菲比为了掩护瑞秋,谎称自己怀孕了。 Monica: What are you talking about? P

发表于:2019-02-16 / 阅读(78) / 评论(0) 分类 英语PK台

图片1 图片2

发表于:2019-03-02 / 阅读(146) / 评论(0) 分类 加州英语分级GK

图片1 图片2

发表于:2019-03-02 / 阅读(133) / 评论(0) 分类 加州英语分级GK

图片1 图片2

发表于:2019-03-02 / 阅读(142) / 评论(0) 分类 加州英语分级GK

图片1 图片2 图片3

发表于:2019-03-02 / 阅读(145) / 评论(0) 分类 加州英语分级GK
学英语单词
acceptable limit
Amaranthus retroflexus L.
amphilinid
armilustrum
Aspleniinae
barium-chloride
batdom
be bathed with
Beddoes, Thomas Lovell
bog peat
bond interface
brawniest
butazophen
calamene
cespitation
chelicerates
chromium(iii) thiocyanate
codopant
combined train
communer
conditioned reaction
cookfire
copy proof
cruddies
cutaneous lymphogranuloma
direct impact amplifier
directionally selective neuron
dishman
disjointedness
Dorothy Hodgkin
dossals
endogenous bud
euproctis tomponis
fatty acid polyethylene glycol ester
forty-fourth
glomeruluss
Guallabamba
hexagon-headed bolt
importables
in a humorous vein
insurance society of new york
intercarpal
isococaine
karob
kennelly-heaviside layers
labour management
landmining
lashing eye
layer silicates
linear decision
Linggajati
linguo-axial
long stem cutting
lynde
mechanical gage
mechanical-foam nozzle
mesopelagic fishes
methergin
michalson
Myoko
neuromittor
non freezing mixture
Nueva Esperanza
on one 's own
Panguipulli
parlour grand piano
parricidal
pitchblock
plastic moderated reactor
pluck up one's courage
plushiness
Pollia minor
potassium-sodium exchange
prairie sunflowers
precast liquid missile
preview mode
prismognathus davidis cheni
re-titling
right to hold public office
Rockwell hardness B-scale
scallop shell
scalping sieve
secondary great circle
shawangunks
shriberg
site natural condition
spotting drill
staircase locks
started back
stem to stem
sublingual space
superheat fuel assembly cluster
tacchini
Tetracosamethylhendecasiloxane
thin film circuit
thyrotropin releasing hormone stimulation test
tube domain
unwheeme
verifying punch
vertebral fused portions
Vexillabium
with respect to