双向数列

Editors note: This is the third episode of four-part series on verb tenses. Be sure to listen to part one and part two first. For VOA Learning English, this is Everyday Grammar. Today we are going to talk about the perfect verb tenses. Perfect tenses

发表于:2018-11-27 / 阅读(451) / 评论(0) 分类 2016年VOA慢速英语(十二)月

Section A [00:01.23]1. M: I haven't decided which subject to major in [00:04.96]physics or chemistry. [00:07.76]W: It isn't easy to choose,is it? [00:10.21]Q: What does the woman mean? [00:13.87]2. W: The map shows that this street goes downtown. [00

发表于:2018-11-29 / 阅读(239) / 评论(0) 分类 决胜四级听力必备

Section A [00:01.54]1. M: My grandpa died in 1978. I was 18 years then. [00:08.20]W: That means he would be 76 if he were alive. [00:11.49]Q: How old was his grandpa when he was dead? [00:14.45]2. M: Why are you going so fast? [00:17.53]Where are you

发表于:2018-12-01 / 阅读(294) / 评论(0) 分类 决胜六级英语听力

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Its the time of year to take a look backand thats just what the journal Science did as they listed their most important breakthroughs of 2008. At the v

发表于:2018-12-02 / 阅读(181) / 评论(0) 分类 Scientific American(十二)月

图片 by Jason Marshall Its not often someone suggests that knowing some math could make you the life of the party, but thats exactly what Im going to do. Yes, a properly timed delivery of a few fun facts about the famed Fibonacci sequence just migh

发表于:2018-12-07 / 阅读(169) / 评论(0) 分类 数学英语

[ti:UNIT 7 Enjoy Your Hobby Lesson 56:Unit Review] [0:01.051]Unit 7 [0:02.631]Enjoy Your Hobby [0:04.894]Lesson 56: [0:06.943]Unit Review [0:08.907]I. [0:10.231]Building Your Vocabulary [0:12.963]A. [0:14.500]Fill in each blank with the proper word o

发表于:2018-12-10 / 阅读(178) / 评论(0) 分类 河北教育初中英语(初中起点)八年级上

发表于:2018-12-12 / 阅读(120) / 评论(0) 分类 医务英语

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The human genome was sequenced, and in the process of moving that forward the technology that was developed was incredible. And because of their efforts in human genome,

发表于:2018-12-24 / 阅读(223) / 评论(0) 分类 Scientific American(十)月

Describing Order and Sequence Patrick: Okay, your first task is to put all of these files in order. Maya: Wow, there must be hundreds of files in this storeroom. How am I supposed to organize them? Patrick: Create a basic filing system. Put things in

发表于:2018-12-27 / 阅读(169) / 评论(0) 分类 2014年ESL之商务英语

图片 by Jason Marshall Some math is functional. Some math is fun. And some math is simply stunning. If that last description sounds improbable to you, then today just might change your mind. Because now that weve covered enough ground, were going t

发表于:2019-01-02 / 阅读(262) / 评论(0) 分类 数学英语

This is Scientific American's 60-Second Science. I'm Steve Mirsky, got a minute? Neandertals were our closest relatives. And now we know a lot more about them. Because researchers have for the first time sequenced a complete Neandertal genomethat of

发表于:2019-01-08 / 阅读(188) / 评论(0) 分类 Scientific American(八)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? Robin Williams thought that the platypus was cobbled together by an inebriated deity: Lets take a beaver. Lets put on a ducks bill. Now we know how weird the platypus is

发表于:2019-01-08 / 阅读(181) / 评论(0) 分类 Scientific American(五)月

以 Bumpy Ride 而一炮走红的瑞典/刚果新人歌手Mohombi,去年发布了与RB巨星Akon合作的新曲Dirty Situation,如今已发布专辑 Movemeant。 他是第一个签入著名瑞典音乐制作人RedOne旗下的新歌手,单曲 Bu

发表于:2019-01-11 / 阅读(192) / 评论(0) 分类 天籁音乐

异地恋。Long distance relationship现在大家都知道了吧,但是因为美国的地理,有一个词叫bi-coastal relationship,是不是很独特呢?

发表于:2019-01-15 / 阅读(156) / 评论(0) 分类 OMG美语

Fred: Hi, Shibika, so this is almost the end of the year, 2007. Can you tell me a bit, how was your year this year? Shibika: Yeah, I had pretty nice year actually. I went through a lot of ups and downs, and yeah, at first I did really well in my clas

发表于:2019-01-20 / 阅读(231) / 评论(0) 分类 原版英语对话1000个

古埃及金字塔是奴隶制帝王的陵墓,最宏大的当为吉萨三座大金字塔。塔基呈方形,每边长230米,高146米,用230余万块巨石(每块平均重达2.5吨)垒成,国王墓室用一块400吨重的石板垒成。整体规

发表于:2019-02-01 / 阅读(139) / 评论(0) 分类 阅读空间

BEIJING, Aug. 22 (Xinhuanet) -- Researchers have discovered how a human egg captures an incoming sperm for fertilization, paving the way to help couples suffering from infertility, according to media reports on Monday. An international team of resear

发表于:2019-02-08 / 阅读(192) / 评论(0) 分类 英语新闻

Listen to the schedule of a business trip. Fill in numbers l-8 to point out the sequence of the schedule. I'm leaving for Milan on the 7th of June. l'II arrive there on the 8th evening at about 7:OOpm. Then, l'II take a shuttle bus to the hotel. On t

发表于:2019-02-17 / 阅读(149) / 评论(0) 分类 英语听力练习题

Listen to the dialogues and write the correct sequence of l-6 as mentioned in the dialogues. A:How do I search books from the computer? B:First, key in your PIN number. Then, it goes to the Library's Homepage. Then, you can choose any way you want to

发表于:2019-02-17 / 阅读(130) / 评论(0) 分类 英语听力练习题

Thank you for being here,Fareed.Nice to have you on the show. 多谢你抽空前来 法里德 很高兴你能来上节目 Let's get started first with your background.I do think I know a lot about you. 首先聊聊你的背景 我觉得我很了解你

发表于:2019-02-23 / 阅读(176) / 评论(0) 分类 柯南脱口秀
学英语单词
adjustable standard
apple fruit licker
applicably
baffling
bible-thumpers
binding
bisschop
body shear bolt
brandee
bulloches
calyptothecium ramosii
cantlet
capitiluvium
centres of curvature
chafe
circulation dryer
clerkish
clock system
collective education
colored sweating
complicated target
crowdions
cut-out wind speed
descending phrase
dicoccous
diffugient
discharge union
dopa decarboxylase
duty-frees
E6-AP
Echinus esculentus
environmental suitability
enzootic bovine hematuria
EOD (end of data)
equatorial projection
fallout shelter
family actinomycetaceaes
fifth cousin
flax rettirg
fracture surface
gamma absorption
gas tap
granulocytopenia
hard vector surface
Hyclorate
IRIR
lap dovetail
Le Mont-St-Michel
location-factor
mancias
mass physiology
megacycle region
megalopses
melting theory
Mencué
Merlara
nesapidil
night-time reconnaissance system
nimonal modulation rate
no par value stock
Nodus lymphaticus foraminalis
non-answers
non-insulin-dependent diabetes mellituss
non-nationals
parentine
peneplane
peripheral belief
photo electric switch
pickerel weeds
ppb, ppb.
print device
Rawa Mazowiecka
religious outcast
sangrita
scharves
shop clerk
single abrader
skid road
smell power
soda lime tube
ssadh
SSCP services manager
standing out for
stands for
Stodgers
supermolecular complex
Tainan County
Taylorian
therapeutic names
thruff
to one's benefit
Tresllian's sign
tuna-fishing
twisting load
tying products
uniform section blade
utivarachna taiwanicus
walled base
Welzow
worksheet information
yoking together
zonal index