差异展示PCR

by Jason Marshall In past articles weve talked at length about three of the big four traditional processes used in basic arithmetic: addition (see also How to Add Quickly), subtraction, and division. However, for one reason or another, we havent yet

发表于:2018-12-07 / 阅读(144) / 评论(0) 分类 数学英语

图片1 图片2 图片3 by Jason Marshall Today we're turning our attention to using everything we've learned so far to help you solve math problems faster than you ever thought was possible. In this article youll learn two tips to help you add quick

发表于:2018-12-07 / 阅读(207) / 评论(0) 分类 数学英语

图片1 图片2 图片3 图片4 图片5 图片6 图片7 图片8 图片9 by Jason Marshall Continuing our quest towards turning you into a quick-calculating machine, today were building upon last weeks tips with one additional very important tip that

发表于:2018-12-07 / 阅读(130) / 评论(0) 分类 数学英语

A zoo employee was bitten by an African puff adder, a large poisonous snake. He was trying to put the snake into a bag so that it could be moved to a new snake house. The snake handler was wearing heavy gloves and thick boots, but the adder sank its

发表于:2018-12-11 / 阅读(145) / 评论(0) 分类 原版英文小故事

This is the VOA Special English Economics Report. President Obama held a White House conference this month to discuss ways to prevent bullying in school. But bullying is a problem not just among young people. Workplace bullying can involve threats, b

发表于:2018-12-16 / 阅读(213) / 评论(0) 分类 2011年VOA慢速英语(三)月

Math Program Adds Up for Kids A pilot project is being launched in Malawi and Bangladesh to teach kids that math is fun and that it matters. Save the Children calls it the Numeracy Boost program. Former U.S. public school teacher Shirin Lutfeali help

发表于:2018-12-16 / 阅读(124) / 评论(0) 分类 VOA标准英语2012年(七月)

More Afghan Opium May Mean More Pakistani Addicts In Pakistan, the number of people addicted to heroin and other opiates, like these in Karachi, are on the rise. Mohammad Qurban has been an addict for 20 years. This is his second time in rehab. There

发表于:2018-12-16 / 阅读(106) / 评论(0) 分类 VOA标准英语2012年(十二月)

Todd: Masako, I was very surpised to hear that you are actually a grandparent. Masako: Yes, yesTodd: You look very young. I was very shocked. Tell me about your grandchild. Masako: She's a baby. Of course. A baby, a baby girl. And her name is, it's H

发表于:2019-01-02 / 阅读(143) / 评论(0) 分类 英语访谈对话

Grammar Girl here. I'm on vacation this week, but before I left I updated one of the early episodes that I took down a few months ago. I hope you enjoy this new and improved version. Today's topic is addictive versus addicting, and we'll get to use a

发表于:2019-01-02 / 阅读(169) / 评论(0) 分类 英语语法 Grammar Girl

by Jason Marshall Weve spent the last few articles building our numerical vocabulary from the ground up. Today, were going to talk about something that sounds hard, but is actually pretty easy...and very useful too: the commutative property of additi

发表于:2019-01-02 / 阅读(233) / 评论(0) 分类 数学英语

by Jason Marshall Todays article will walk you through the first steps of kicking your calculator dependency. This isnt something we can accomplish in a single article, so well be revisiting this topic periodically. Today, were kicking things off by

发表于:2019-01-02 / 阅读(238) / 评论(0) 分类 数学英语

Maria was learning to add numbers. She liked to add numbers. It was easy to add numbers. She could add one and one. She knew that one and one are two. She knew that two and two are four. She knew that three and three are six. But that was it. She did

发表于:2019-01-06 / 阅读(131) / 评论(0) 分类 超级简单英语阅读

when the night has come and the land is dark and the moon is the only light we'll see no, i won't be afraid no, i won't be afraid just as long as you stand stand by me so darling, darling, stand by me, oh, stand by me oh, stand, stand by me stand by

发表于:2019-01-10 / 阅读(151) / 评论(0) 分类 The Voice 美国好声音

I feel the earth move under my feet I feel the sky tumbling down I feel my heart start to trembling Whenever you're around Oh baby When I see your face Mellow as the month of May Oh darling I cant stand it When you look at me that way I feel the eart

发表于:2019-01-10 / 阅读(177) / 评论(0) 分类 The Voice 美国好声音

By Dan Robinson Capitol Hill 14 March 2006 Wednesday the Liberian president will address what is called a joint meeting of Congress, an honor given to foreign leaders, the most recent being Italy's pr

发表于:2019-01-11 / 阅读(198) / 评论(0) 分类 2006年VOA标准英语(三月)

AS IT IS 2013-05-27 Help for Heroin Addicts Hello, and welcome to As It Is -- VOAs daily magazine show for people learning American English. Im Christopher Cruise. Today on the program, we report on how vaccines are being used in the fight against ch

发表于:2019-01-12 / 阅读(166) / 评论(0) 分类 2013年VOA慢速英语(六)月

Todd: Masako, I was very surpised to hear that you are actually a grandparent. Masako: Yes, yes Todd: You look very young. I was very shocked. Tell me about your grandchild. Masako: She's a baby. Of course. A baby, a baby girl. And her name is, it's

发表于:2019-01-16 / 阅读(111) / 评论(0) 分类 原版英语对话1000个

Todd: OK, Jeff, we're talking about odd jobs. Good jobs, bad jobs, strange jobs we've done. What's an odd job you've had Jeff? Jeff: Todd, one of my oddest odd jobs might be was when I was backpacking through Europe after university, I ran out of mon

发表于:2019-02-06 / 阅读(125) / 评论(0) 分类 原版英语对话1000个

遥望那段漂浮着柳絮和直到世界末日歌声的时空,才发现...放下后,除了年华,我们什么也没失去。却得到更多。 You're not the only girl in town All my friends keep tellin' me You're not hte only girl in town Bu

发表于:2019-02-11 / 阅读(259) / 评论(0) 分类 音乐天堂

Thank you. Thank you, very much. Chancellor Kohl, Governing Mayor Diepgen, ladies and gentlemen: Twenty four years ago, President John F. Kennedy visited Berlin, and speaking to the people of this city and the world at the city hall. Well since then

发表于:2019-03-16 / 阅读(331) / 评论(0) 分类 名人演讲
学英语单词
a rude awakening
abruptions
activation overvoltage
altitude alkalemia
apple fritters
arc dome
arizonan
authentication algorithm
basmen
battery farming
biomass-based
Brucelleae
burst out doing
cajuputole
caudal sympathetic nervous system
Ceilán
chloro-lactic acid
chyacking
computed tomography apparatus
condition of crime
congenital jaundice
corncrakes
cytoplasm (strasburger 1882)
deformation of the image
Dioscorea alata
duodenoscope
energy gradient line
Euahlayi
exemption for dependents
exterminated
fractionation radiation
gene therapy
geospatial engineering
give it the deep six
hydrogen corrosion
in-line piston pump
interpel
Jerez de la Frontera
jonkel
karyopherin
lantern tree
lenarz
Les Monges
light loaded network
lispe orientalis
litoral
look ... in the face
low-energy electron beam monitor
magic mountain
manipulable
Melilotoides ruthenica
metallized ceramics
mirobalane
monoskis
montpeliers
most definitely
non-linear amplifier
nonadopter
nutational
orbital floor syndrome
overflow critical depth
pabulation
paeumonopaludism
para-hydroxybenzoic acid
period end/year-end close
petty-bourgeoisies
phage-resistant
Phenprenazone
phosphorus and potassium
planned special exposure
plow pan
polyphaser
ponciruss
prontosil album
quod
rafidah
ready prompt
redundant memory
route of circulation
Russet Burbanks
Russianize
self-balanced
sex discrimination
sharp dissection
Silivri
single-silk enamel
solar energy materials
spring for air pump
squigglies
standby line
strawberry foot rot
super-heated
superglacial stream
this is my street
tip-back
trap theory
unacceptability
undamped natural frequency
vms (video modulation system)
womaning
xiphoid-process
zebina affinis