[数] 中心单代数

JUDY WOODRUFF: Now a look at how required math classes may factor into the academic success or failure of high school and college students. Hari Sreenivasan has the story as part of our weekly education series, Making the Grade. ANDREW HACKER, Author

发表于:2018-12-05 / 阅读(99) / 评论(0) 分类 PBS访谈教育系列

Simple Plan--Untitled (MV) Inevitably labeled pop punk, Simple Plan's sophomore album finds the Montreal quintet settling in as a straight-ahead rock band. Yes, lyrically, their concerns remain grounded in the adolescent petulance and alienation of

发表于:2018-12-07 / 阅读(143) / 评论(0) 分类 娱乐新天地MV 2006

Stereotypes are usually the last thing to change in the face of contradictory evidence. A case in point is the long held belief that boys are better at mathematics than girls. Well a meta-analysis to be published in the journal Psychological Bulletin

发表于:2019-01-08 / 阅读(102) / 评论(0) 分类 Scientific American(一)月

A 33-year-old financial analyst in California recently quit his job to devote himself to an unpaid job teaching math on the Internet, and his lessons are reaching almost 100,000 people a month. In this week's edition of Making a Difference, we introd

发表于:2019-01-13 / 阅读(109) / 评论(0) 分类 VOA标准英语2010年(三月)

Hospitals can be dangerous places. We go there to get well, but sometimes people get sicker or even die because of infections they contract in the hospital. A new program to reduce infections with relatively simple and inexpensive quality control mea

发表于:2019-01-14 / 阅读(103) / 评论(0) 分类 VOA标准英语2011年(二月)

I'm here today to talk about the two ideas that, at least based on my observations at Khan Academy, 今天,我要分享两个观点,至少基于我对可汗学院的观察得出的, are kind of the core, or the key leverage points for learning.

发表于:2019-01-18 / 阅读(101) / 评论(0) 分类 TED演讲科学篇

A new program to reduce hospital infections with relatively simple and inexpensive quality control measures is saving lives, according to a new study. 研究显示,采取一些比较简单和低成本的医疗质量控制措施,就可以减少感染

发表于:2019-01-19 / 阅读(85) / 评论(0) 分类 VOA双语新闻 2011年2月

A simple friend has never seen you cry. A real friend has shoulders soggy from your tears. A simple friend doesn't know your parents' first names. A real friend has their phone numbers in her address

发表于:2019-01-20 / 阅读(154) / 评论(0) 分类 阅读空间

By Carol Pearson Washington 14 August 2007 Aspirin A new study shows that five simple health measures could help you and many others live a longer life. VOA's Carol Pearson reports on the simple and cost effective steps recommended in this study. A n

发表于:2019-01-20 / 阅读(124) / 评论(0) 分类 2007年VOA标准英语(八月)

If I could write a letter to me And send it back in time to myself at 17 First I\'d prove it\'s me by saying look under your bed There\'s a Skoal can and a Playboy no one else would know you hid And then I\'d say I know it\'s tough When you break up

发表于:2019-02-02 / 阅读(116) / 评论(0) 分类 美国乡村音乐

Language is hard. In fact, it's infinitely harder and more complicated than math. And yet, nearly every small child can learn and master language. 语言真的很难。老实讲,它比数学要复杂得多,也困难得多。不过,几乎所有的

发表于:2019-02-03 / 阅读(97) / 评论(0) 分类 英语新闻

351. odd a. 奇特的,古怪的;奇数的 352. omit vt. 省略 353. opponent n. 敌手,对手 354. opportunity n. 机会,时机 355. orchestra n. 管弦乐队 356. semester n. 学期;半年 357. se

发表于:2019-02-03 / 阅读(268) / 评论(0) 分类 英文语法词汇

At first glance Esther Okade seems like a normal 10-year-old. She loves dressing up as Elsa from Frozen, playing with Barbie dolls and going to the park or shopping. 第一眼看上去,十岁的埃丝特奥卡德好像和同龄孩子没什么不一样

发表于:2019-02-05 / 阅读(96) / 评论(0) 分类 阅读空间

经典英文句子帮你记单词 1. With my own ears I clearly heard the heart beat of the nuclear bomb. 我亲耳清楚地听到原子弹的心脏的跳动。 2. Next year the bearded bear will bear a dear baby in the rear. 明年,长胡子的熊将

发表于:2019-02-06 / 阅读(167) / 评论(0) 分类 实用英语

Brad Paisley -- Letter To Me 写给自己的信 If I could write a letter to me And send it back in time to myself at 17 First I'd prove it's me by saying look under your bed There's a Skoal can and a Playboy no one else would know you hid And then I

发表于:2019-02-07 / 阅读(107) / 评论(0) 分类 经典英文歌曲

If I aint got nothing, I got you If I aint got something I don't give a damn, cause I got it with you I don't know much about algebra, but I know one plus one equals two And it's me and you, thats all we'll have when the world is thru Cause baby we a

发表于:2019-02-11 / 阅读(128) / 评论(0) 分类 The Voice 美国好声音

But when they really get pushy, people really get pushy, I say, I do it because you do it for your kid. 但是当他们变得有进取心时,我们就会变得更有进取心,我说:我这样做就像你们为自己的儿子做的原因一样。

发表于:2019-02-13 / 阅读(99) / 评论(0) 分类 TED演讲国际问题篇

Leaders: Big economic ideas Breakthroughs and brickbats 社论:重大经济思想突破与板砖 What economists can learn from the discipline's seminal papers 经济学家能够从这一学科的经典论文中所学到的 It is easy enough to cri

发表于:2019-02-17 / 阅读(124) / 评论(0) 分类 经济学人财经系列

MELBOURNE, Jan. 12 (Xinhua) -- As the hot favorite for the women's title of 2013 Australian, Serena Williams is simply enjoying being in the moment. I get asked that all the time, but I feel like I'm just in the moment right now, Williams said. For t

发表于:2019-02-18 / 阅读(103) / 评论(0) 分类 英语新闻

You see, the autistic mind tends to be a specialist mind 自闭症患者通常都是有特别的心智的 good at one thing, bad at something else. 她们往往在某一方面做得很棒,在其他方面做得很糟 And where I was bad was algebra.

发表于:2019-03-04 / 阅读(153) / 评论(0) 分类 TED演讲教育篇
学英语单词
abkultur
accidental torque
air-cleaning facility
allantoic
aluminum gate and sillicon gate differences
antidepressants
Aporosa
armigeres (leicesteria) flavus
bearinghousing
bond debts
borovoes
Brittas B.
brocialism
cascan
chain story
cheap and nasty
Chenopodium gracilispicum
chopt
coal firing boiler
coating hood
copper-nickel
corrugant
corrugated finned tube exchanger
detractours
dot-pattern generator
double ureter
dratio
effective grounded
effective inflow
eucommea rubber
false lupine
felis temminckii
fibre bundles
flocculated colloid
Gates of Paradise
gelatine dynamite
genus spheniscuss
Gibbs function criterion
glands of Leydig
glanz
grain products
Granuloreticulosea
hesitations
hinge tooth
hyperacoustic zone
hyperpower
i'll see you
infinite conical horn
involuntary group
kain
lament over
laundry and hot shower tank
liquid clutch
liquid fluorocarbon
load coil
loss carry back carry forward credits
ma and pa
maximum toggle speed
microbiophagy
mixed chart type
mobbs
multiple film
never top 40 (juke box)
non-productive branch
over-full
PAF (price adjustment formula)
paraduodenal fossae
Pecten analis
pesticide
pointer array
predictors of technology
producibility index log
quiet as a mouse
R.C. (reinforced concrete)
radio interference filter
rectifying junction
Rickord's chancre
rosulated leaf
s.m.p.
salvene
santa rosa i.
sapo domesticus
Sclavo's serum
self-latching relay
self-shifting synchronizing clutch
Seventh-Day, seventh-day
shapur
space station equipment
stop work request
stopcock
stypses
supershifted
temperature increase
the topic of the day
to blaze
tpm (total productive maintenance)
travelling-wave aerial
uridylated
vermilion cinnabar
waymentation
wind gaw