单代数的判别式

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(67) / 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(114) / 评论(0) 分类 娱乐新天地MV 2006

English英语 Japanese日语 Chinese语文 mathematics数学 science理科 gymnastics体育 history历史 algebra代数 geometry几何 geography地理 biology生物 chemistry化学 physics物理 physical geography地球物理 literature文学 sociolo

发表于:2018-12-19 / 阅读(110) / 评论(0) 分类 英文语法词汇

获得52.2k好评的回答@Isaac Hanemann: Among my peers, the most common reasons to sit in front are: 在我的同龄人中,坐在前排的最普遍的原因是: ?Poor vision 视力不好 ?Poor hearing 听力不好 ?Harder to fall asleep (my

发表于:2019-01-03 / 阅读(52) / 评论(0) 分类 阅读空间

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(73) / 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(83) / 评论(0) 分类 VOA标准英语2010年(三月)

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(59) / 评论(0) 分类 TED演讲科学篇

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(127) / 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(94) / 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(78) / 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(69) / 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(233) / 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(72) / 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(138) / 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(76) / 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(100) / 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(68) / 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(89) / 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(79) / 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(124) / 评论(0) 分类 TED演讲教育篇
学英语单词
acanthocyclops morimotoi
achillurabainiasis
Aeschynanthus poilanei
amidin
analytical type chromatograph
antih(a)emorrhagic vitamin
assum
autotoxemias
Bi'r'Alī
BPE
BTG (beacon trigger generator)
carlene
Chokpar
CILRT (containment integrated leak rate testing)
Cirsium souliei
cleaner discs
command status register
compositorial
consular relations
corpus ventrale
country of destination
Cremnosedum
cylinder head water nozzle
delta-winged aircraft
diffused profile
efflorescency
einstein's universe
ergostat
erstwhile
escolars
even Jove nods
execration
expert systems technology
extra-personal
fast neutron spectrometry
finned tubes exchanger
fixed field accelerator
flutter tonguing
forge delay time
fringe radiation
geniculate antenna
gummatous syphilis
her face
hump-shoulder
hydroelectric generating station
ictal
impedance, characteristic
Information Services
international knot
keep one's voice down
knallgas
laughtre
lfe history
life values inventory
Liouville's icterus
low-tower system
Manila card
Mathias formula
mercapt-
miller index
mtpa
negative tank
original hypothesis
part - time employment
phagotrophy
pithovirus
play-seer
pondward
proportionative
public security measure
radiation chemistry of water solution
reasonability
reaumur's law
reckons without
retained deciduous teeth
reussin
run-off rails
sample sum
sand horn
scare-bug
sea peak
seignorage
self hardening sand mixture
sequential switcher
sharedeals
short time count
snatch out of the fire
snow bin
software-transparent cache
spatial isolation
standard regional route transmitting frequencies
sterile deionized water
stramonium fluidextract
suaveoline
subduals
subfactor
sweepages
talking asshole
tights
trifling with
Vena interventricularis posterior
wrap-round