[网络] 母化合物;先导化合物

This is the VOA Special English Development Report. Right now, the top story in AIDS research involves newly announced findings about adult male circumcision. Two studies in Africa found that circumci

发表于:2018-11-27 / 阅读(590) / 评论(0) 分类 2006年慢速英语(十二)月

Could there be a substance that both gives us the munchies and can help combat obesity? There may indeed be, according to research published in the Proceedings of the National Academy of Sciences. The Monell Center in Pennsylvania partnered with Kyus

发表于:2018-12-02 / 阅读(275) / 评论(0) 分类 Scientific American(十二)月

1. Parts of North Carolina all the way up to Massachusetts have been rattled by an earthquake. The 5.9-magnitude quake was centered in Virginia and has caused minor damage and some injuries. 2. Hundreds of Libyan rebels have stormed one of Muammar Ga

发表于:2018-12-15 / 阅读(268) / 评论(0) 分类 美联社新闻一分钟2011(八月)

In the 1950s, Jim McFarland's grandmother took him on annual train trips from New York to see relatives in the South. And it's time again for StoryCorps, Americans interview each other. We hear their everyday stories and every week we find out how a

发表于:2018-12-19 / 阅读(199) / 评论(0) 分类 2007年NPR美国国家公共电台

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? Generations of American children have been told, Eat your broccoli! And for decades, researchers have known that broccoli and related vegetables like cauliflower and water

发表于:2018-12-24 / 阅读(252) / 评论(0) 分类 Scientific American(一)月

This is Scientific Americans 60 Second Science, I am Cynthia Graber, this will just take a minute. Compounds found in the herb thyme have antibiotic properties. Now scientists have demonstrated that thyme might have a future role in fighting acne. A

发表于:2018-12-24 / 阅读(358) / 评论(0) 分类 Scientific American(三)月

Ever wondered why mosquito eat some people up but leave others relatively unscathed. a new study find this prefential treament due to smells produced by the microscopic critters that cover our bodies. the reaserch is in the journal public library sci

发表于:2018-12-24 / 阅读(302) / 评论(0) 分类 Scientific American(一)月

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Take a deep breath. Taste anything? Actually, your lungs may, because scientists have discovered that the same receptors that exist on the tongue to tast

发表于:2018-12-24 / 阅读(240) / 评论(0) 分类 Scientific American(十)月

10 A Parent-Teacher Conference GLOSSARY parent-teacher conference a special meeting between a students parentsand teacher when they discuss how well (or poorly) the student is doing in school * At the parent-teacher conference, they found out that th

发表于:2018-12-26 / 阅读(318) / 评论(0) 分类 2010年ESL之日常生活

26 Renting an Apartment GLOSSARY apartment manager a person whose job is to take care of problems in an apartment building, collect the rent, and find peopleto live in the building * When our toilet stopped working, we called the apartment manager. v

发表于:2018-12-26 / 阅读(352) / 评论(0) 分类 2008年ESL之就医和人际交往

By Jerilyn Watson Broadcast: October 23, 2003 This is Steve Ember with the VOA Special English Education Report. Six-million people in the United States belong to 1)parent-teacher associations, or PTA

发表于:2019-01-02 / 阅读(221) / 评论(0) 分类 VOA2003(下)-教育与新闻

英语作文 A good parent-children relationship should be set up on the basis mutual understanding and respect. Parents can not impose their ideas on their children. They should treat their children as independent individual. It is advisable for the

发表于:2019-01-03 / 阅读(241) / 评论(0) 分类 英语作文

This book stinks! is really a bad review. But even a classic work can start to smell when it gets old enough. Now chemists have developed a technique that identifies what kind of degradation process an old book or historical document is going through

发表于:2019-01-08 / 阅读(234) / 评论(0) 分类 Scientific American(十一)月

This is Scientific Americans 60-Second Science, Im Steve Mirsky. Got a minute? The 2010 Nobel Prize in Chemistry goes to the University of Delawares Richard Heck, Purdues Ei-ichi Negishi and Hokkaido Universitys Akira Suzuki for their work in develop

发表于:2019-01-08 / 阅读(288) / 评论(0) 分类 Scientific American(十)月

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Wine can help keep conversation flowing at a dinner party. And now it looks like that wine may aid in materials science as well. Japanese researchers dis

发表于:2019-01-08 / 阅读(312) / 评论(0) 分类 Scientific American(三)月

Being a parent is the biggest responsibility we can have in our lives. Its scary if you think about it. You have to look after a tiny baby for years and years. It is your duty to make sure that little baby grows up into a wonderful, happy and respons

发表于:2019-01-21 / 阅读(231) / 评论(0) 分类 纯正英语一分钟

今天我们要学的词是helicopter parent。 Helicopter parent, 直升机父母?没错。Helicopter parents, like a helicopter, they hover closely overhead, rarely out of reach whether their children need them or not, 这些直升机父母,真的

发表于:2019-02-06 / 阅读(259) / 评论(0) 分类 英语每日一词

It is common for adults to use baby talk when interacting with very young children. This way of speaking attempts to copy the sounds babies make when they first try to talk. But is this form of communication helpful to a childs development? Several s

发表于:2019-02-17 / 阅读(287) / 评论(0) 分类 2019年VOA慢速英语(一)月

进行英语面试时,面试官会问到,你为什么觉得你胜任这项工作。那么你的回答就要让面试官相信你能把这份工作做好。本文列出了一些常见的问题和回答,仅供参考。 I (Interviewer 面试者) A

发表于:2019-02-18 / 阅读(257) / 评论(0) 分类 实用英语

Why is my verse so barren of new pride, 为什么我的诗缺乏点晴之笔, So far from variation or quick change? 行文沉闷呆板,千篇一律? Why with the time do I not glance aside 为什么我的诗不顺应时尚, To new-found meth

发表于:2019-02-24 / 阅读(295) / 评论(0) 分类 莎士比亚十四行诗全集
学英语单词
Abbe spherometer
adeno
air blower
air leak
amphetamine use disorder
attachment optical system
attercops
best girl
Bilolo
bowlines
broadus
bubble strether
cakes
chronic periostitis
circuit-breaker oil
Clipper chip
condition for the supply of plant and machinery for export
continental borderiland
corpses'
cutrake
deficit-neutral
definite cycle time
deutsche mark
dominant power
double-cover
escarbuncles
Estienne
flare control
flossed
fosburgh
gelatos
geometrical irregularity
Ggmnosperm
gocart
goniopora stutchburyi
good paper
halticorcus miwai
heart-check
high flux beam reactor (HFBR)
Hydrographic Office of Japan
hyperchloremias
ideal compressible fluid dynamics
index-linkings
indium hydrosulfide
lanceotoxin
language zones
lapps
levulinic aldehyde
liquor sodii citratis
low-density lipoproteins
malt-wort
manganese (II)sulfate
masonary
MCEC
Mercurichloride
midbeat
multifuel firing
oil head tank
otto reaction
overganging
oxidants
Pakhomovo
paranatal
partition coefficient(distribution coefficient)
photogrammetric instrumentation
pole of a great circle
precommunicating part
Prince Edward Island, Prov.of
proximation
Purnima
put someone through one's pace
Rabuteau's test
Randall County
re-engineers
reupholsterers
reverse LAN channel
rotary sand screen
run in test
second stage altitude
shop instructions
shortest common superstring
sinus ethmoidei anteriores
southern china
spray granulator
statement of estimated application of funds
stem plan
superofrontal
swordbird
take a profound interest
tantalum tool alloy
tender loving cares
trestletree
truncocolumellas
trunnion mounting
two circuit microprocessor
two-name
unadvisedly
volvuli
waveform height
weber-fechner
were out of use
whitesplains