极性序列

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(559) / 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(351) / 评论(0) 分类 决胜四级听力必备

locomotive startle strife pledge except gross telecomunication plunder adjustable poke testify polarity justification entertainment degradation outrage pop endeavour consistent porcelain avert oxidize metropolitan

发表于:2018-12-01 / 阅读(222) / 评论(0) 分类 用Mp3背六级单词

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(386) / 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(244) / 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(249) / 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(244) / 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(176) / 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(304) / 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(240) / 评论(0) 分类 2014年ESL之商务英语

This summer I was back in Ohio for a family wedding, and when I was there, there was a meet and greet with Anna and Elsa from Frozen. Not the Anna and Elsa from Frozen, as this was not a Disney-sanctioned event. These two entrepreneurs had a business

发表于:2018-12-28 / 阅读(204) / 评论(0) 分类 英语语言学习

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(334) / 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(278) / 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(264) / 评论(0) 分类 Scientific American(五)月

By analyzing different samples of lava, Herrero / Bervera has built up a picture of how the filed has changed since long before humans were around. They are actually the recorders of the Earth's magnetic field in hundreds of years, thousands of years

发表于:2019-01-22 / 阅读(198) / 评论(0) 分类 自然百科2011年

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(208) / 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(274) / 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(198) / 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(179) / 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(261) / 评论(0) 分类 柯南脱口秀
学英语单词
a turkey
A.con
accurate scanning
active rod grinding
actual point of frog
alien plant
antiship guided missile
antiwhip
antrimolite (mesolite)
arbalest
asf streaming redirector file
Asinara, I.
Bacillus capsulatus mucosus
building-block machine
Bulbophyllum chondriophorum
bull ladle
Burkina Faso franc
button in condensed milk
canonicus
chicanos
coefficient of direction
commercial science
court-marshal
diggers
dihYdroxydimethylbutyric acid
drainless
economic opportunity
epizoochore
extramarital
facies posterior hepatis
fluitante
foam washer
front-drives
Fructus Jujubae Saccharatus
gardasil
grade banding
green shoe provision
gyalecta pinneti ach.
haphazard selection
hidradenitis
hole
hybrid error control
hyperbaric oxygen
hypometamorphism
inpouring
Intelligent port selector.
internal communication system
jasomirgott
journal number
jousted
lead spindle
Leigong Paozhilun
lerry
less than normal refraction
live bait tank
microincineration
milors
minimalization
network-connecteds
nuclear waste repository
outsearch
over-stretching
Palos de la Frontera
Petrosimonia glaucescens
pineapple ice cream
plastic gauge
polus anterior (bulbi oculi)
power decay
pulphouse
Radiolaria
re-decoratings
redistribute
refreshment-trolleys
remote-access data processing
repressed inflation
ridge-like
rubber mallet
safe voltage
setting-out work
steatohepatitis
structural valley
superandio frequency
test input
trey
ultra-long-range
ultra-violet monitor
ultrasonic spectrometer
under beam girder
unitary budget
vapor liquid process
vector resolution
ventral cerebral vein
Voight's-effect
volcanic chrysolite
Voro
walking dysentery
Windows NT
wing-game
wolfflin
wood splitting machine
worm-gear drive
wrap around counter