单词：N-methylacetanilide
单词：N-methylacetanilide 相关文章
AS IT IS 2016-10-01 Report: Smoking May Permanently Damage Genetic Material 报告称吸烟或永久性损伤你的遗传物质 Here is another reason to not light up a cigarette. Smoking can permanently damage your genetic material, according to a n
2016年VOA慢速英语(十)月
Four months before the Bush administration leaves office in January, Defense Secretary Robert Gates laid out his vision for U.S. military strategy on Monday, saying the Pentagon needs to strike a balance between conventional capabilities and the abi
VOA标准英语2008年（九月）
This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Saliva contains many useful components: lubricants, enzymes for breaking down food and now compounds that can reveal a persons age. Thats according to a
Scientific American(六)月
Ever get a sour stomach after your morning coffee? Well, you might end up switching to a dark roastbecause that coffee concoction may leave you with a happier tummy. That's according to the research presented at the American Chemical Society meeting
Scientific American(三)月
You may have heard that humans and chimpanzees have something like 96 percent of our DNA in common. So why, then, are diseases like cancer so common in humans but so rare in chimps? If our DNA is nearly identical, shouldnt we be at risk for many of t
初学者听力文摘精选
Preity Zinta is one of Indias most celebrated actresses. She has appeared in both Bollywood and English-language movies. In addition to acting, she is a writer, stage performer and philanthropist. She is also a businesswoman and co-owns a top Indian
各国名人英文介绍
Stomach Cells Happier with Dark Roast Coffee Ever get a sour stomach after your morning coffee? Well, you might end up switching to a dark roastbecause that coffee concoction may leave you with a happier tummy. That's according to research presented
60秒科学
M Madasiatic acid 崩大碗酸 Magnoflorine 木兰花碱 Magnolia cortex P.E 厚朴提取物 Magnolol 厚朴酚 Maitake mushroom P.E 灰树花提取物（舞茸提取物） Malonyl Oleanolic acid Hemi
医务英语
AGRICULTURE REPORT - Restrictions on Methyl Bromide By Mario Ritter Broadcast: Tuesday, March 16, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Graphic Image Some chemicals
农业与发展
Carolyn Everson is Facebook's (FB) VP of global marketing solutions. When asked what's the best advice she got from Lean In--the No. 1 best seller by Facebook COO Sheryl Sandberg, she listed 10 of them as follow: 卡洛琳艾弗森是Facebook全球营销
求职英语
vanessa carlton--Nolita fairytale I know, you know, We don't see And so our truths wait patiently I walk the streets with a song in my head We ebb and we flow so Got my toes on my pup at the foot of my bed My heart always seems to know Now take the g
E乐吧
By Caty Weaver Broadcast: September 12, 2003 This is Bob Doughty with the VOA Special English Environment Report. Scientists in the United States have reported some good news about the 1)ozone in the
VOA2003（下）-环境与健康
By Dan Robinson Capitol Hill 20 March 2007 Democrats in the House of Representatives face uncertainty as they proceed with plans to bring legislation to the floor later this week to fund the wars in Iraq and Afghanistan and provide billions in domes
2007年VOA标准英语（三月）
Science and Technology Epigenetics and stress Baby blues 科技 外因遗传与压力 新生儿蓝调曲 A mother's stress while she is pregnant can have a long-lasting effect on her children's genes 母亲孕期压力过大会对孩子的基因造成长
经济学人科技系列
Body Clock Provides Clues to Aging 生物钟提供衰老的线索 If youre searching for the fountain of youth, you might find it in your DNA. Thats according to a new study that sheds light on the biological clock ticking in our genomes, why our bod
VOA常速英语2013年(十月)
1) outta = out + of 没了，走了 2) gotta = got + to 必须做 3) musta = must have = 一定 Were running outta time! 我们没时间啦！白洁最近听到一首很好听的中文歌叫：时间都去哪儿了。
OMG美语
今天我们要讲的习惯用语里有一个共同的词ace。打扑克的人都知道，最大的牌就是ace。有了ace，你就胜券在握，你轻易不会出ace，而是备而不用，要把好钢用在刀刃上。这样就产生了下面我们
美国习惯用语
1) head to head / toe to toe 直面对战 2) face to face 面对面 3) see eye to eye 意见相同
OMG美语
By Barry Wood Belgrade 04 February 2008 Incumbent president of Serbia Boris Tadic won Sunday's presidential election, defeating by a narrow margin a pro-Russian nationalist candidate. VOA's Barry Wood reports from Belgrade. Boris Tadic (l), 03 Feb 20
VOA常速英语2008年（二月）
It's never too late to start something new. 去尝试新事物永远都不用在乎年纪。 Anna Stoehr, the oldest resident of Minnesota, signed up for Facebook just in time to get all those happy birthday wall posts when she turns 114 this weekend
英语新闻