平衡序列

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(547) / 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(330) / 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(374) / 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(232) / 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(234) / 评论(0) 分类 数学英语

Some people eat to live, but there are others who live to eat. To live a long and healthy life, we must learn to have a balanced diet. A balanced diet simply means a bit of everything. A diet which in

发表于:2018-12-08 / 阅读(440) / 评论(0) 分类 赖世雄初级美国英语

[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(234) / 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(167) / 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(289) / 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(223) / 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(319) / 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(261) / 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(245) / 评论(0) 分类 Scientific American(五)月

By Lisa Schlein Geneva 27 November 2007 The United States is urging the International Red Cross Movement to adopt, what it calls, a more balanced approach in dealing with the consequences of climate change. More than 1,500 representatives attending t

发表于:2019-01-31 / 阅读(214) / 评论(0) 分类 VOA常速英语2007年(十一月)

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(191) / 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(258) / 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(191) / 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(172) / 评论(0) 分类 英语听力练习题

Now just what are the tips in China's new dietary guidebook that will help you stay fit and keep the doctor away? Diversity is key. That means eating a balanced combination of all four of the major food groups on a daily basis. Carbohydrates from gra

发表于:2019-02-18 / 阅读(271) / 评论(0) 分类 cctv9英语新闻2016年

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(241) / 评论(0) 分类 柯南脱口秀
学英语单词
AC pumped gas
allowable stress intensity
amanthrene colors
application of surface
axio-occlusal
ayalas
be but a joke
bleaching stain
breathalizer
Bucklebury
cage jump set
carbon tetrabromide
castilia
centre wheel bridge tapped foot
cettia acanthizoides concolor
coder-decoders
commentative
computer-oriented documentation system
counter-motion
cryoalgae
dastardize
deck lamp
dehaired
devection
devies mt.
Dibenzocycloheptane
driving source
ego-persona
envelope delay data
etra
exclusive method
exit designator
fix a price
fixed grizzly
fox farm
FS (factor of safety)
gate arm
gelman
geosynclinal folding
giant-cell tumor of testis
halide salt
hand regulator
Heping Township
hexagon socket countersunk flat cap head screw
hypothetical memory
independent country
Indian okra
inland waterways
InterRail pass
ion exchange exhaustion circuit
ishwarane
junqueira
Kttstorfer number
leishmaniases
lubrication instruction
maximum likelihood large-sample test
mid-board
mikvot
mouse-gray
mugged off
mycodomatium
neode
neutron emission
oil exporting developing country
one-dimenstional structure
oniric
oscoda
outlie
pattern recognition (matching)
pedipalpal
people-in
phosphoenoltransphosphorylase
prejudiceless
propellant utilization system,PUS
psychosomatic training
Putnam Valley
quasi-polynomial
radio position-fix
Ramus acetabularis
rematerializations
Rhodiola tangutica
ring grooves
Salhyr
sandbach
Schaffer's acid
Schonlein
skimpy
slow (-neutron) flux
squirrel cage bar
Sri Muktsar Sahib
stair-step
T-socket
tesson
tin snips
transcendental singularity
unthread
unvital
valve grinding rubber
ventplug
white-gray
wild-flower
young mountains