位势序列

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(406) / 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(187) / 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(224) / 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(130) / 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(136) / 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(142) / 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(75) / 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(181) / 评论(0) 分类 Scientific American(十)月

2)Everydoghashisday!凡人皆有得意时! dog--中西文化不同! Youarealuckydog! -Youarereallyaluckydog! -Whatmadeyousaythat? -Foryouwerebornintheyearof1976andintheyearof1977,therewasanearthquakeinyourhometown. Aslongasyouhavethepotentialsandcapabilities,you

发表于:2018-12-24 / 阅读(170) / 评论(0) 分类 笨小孩学口语

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(126) / 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(215) / 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(141) / 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(139) / 评论(0) 分类 Scientific American(五)月

由于传统的英语教学里面不涉及小作文的内容,所以雅思写作的小作文部分一直是很多同学的软肋。不会说名称,不知如何分析对比,即使有思路却不知如何表达,成为很多同学的问题。下面

发表于:2019-01-18 / 阅读(135) / 评论(0) 分类 雅思英语

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(102) / 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(142) / 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(112) / 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(84) / 评论(0) 分类 英语听力练习题

Responding to the eight major initiatives on China-Africa cooperation announced by Chinese President Xi Jinping at the now-concluded 2018 Beijing Summit of the Forum on China-Africa Cooperation, numerous African ambassadors in Washington say they see

发表于:2019-02-22 / 阅读(160) / 评论(0) 分类 2018CRI中国国际广播电台

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(116) / 评论(0) 分类 柯南脱口秀
学英语单词
-end
activity index
administrative requisition
aircraft engine parts
Aluminac
always-reliable
Araiostrotion
assayings
association class
Ban Si Suk
Bartonellaceae
bilge main
brine well
Brythons
center of attention
chemical tendering
Cipocereus
collar stretcher
comes down on
concha de alava
cyclocrinitid
cymatium pyrum
developmental stages
disorder of phosphorus metabolism
doltishness
dor beetle
effective cutting length
Ehab
electrostatic fluidized bed
elek
exhibited
finance accounting
flat manifold
fly a kite
gassous
genus cordias
glass fibre reinforced elastomer
grain-boundary angle
hand bottom tap
have much ado
heip
higher intermediate point
humeroradial
hydrothermal lens
injectable
inlet valve rocker
items in stock
jacques etienne montgolfiers
Jinja fly
joret
law of bankruptcy
let on
lig. corniculopharyngicum
luminaires
manufacturing applications
maximum ball diameter
meta-stable output configuration
methyl-acetoacetic acid
microsparry
Microula muliensis
motorin'
Mytear
neiman-marcus
non-harmonic tidal constants
oleophylic fertilizer
PDEs
pel-
pix lock
plate-girder bridge
pneumatic to current converters
private final consumption expenditure
pro-hunter
progressive vaccinia
Psidium littorale
queen post truss
racingly
red-heat
reduction of legal capital
resazurin test
return promise
Sardoal
shake someone down
signalling condition
special tax reduction
steam-mechanical mixed atomizer
stellatoes
stiff-neckedness
sub specie aeternitatis
subastral point
such is the case
sulphur printing
superqueue
swinging ground
taenia thalami
tank washing gun
time firing device
top-level function calls
tracing needle
Twin Lakes
underslung hoist
unsabred
us scaffolding