正态平稳序列

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(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(235) / 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(288) / 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(179) / 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(167) / 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(176) / 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(118) / 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(220) / 评论(0) 分类 Scientific American(十)月

Ordering more stationary A: Okay, then, Mary. We need 10 more loose-leaf binders, five pounds of heavy duty white paper, and what else did I say? B: Two boxes of transparencies for the over-head machines. A: Right. And Id like one of those new electr

发表于:2018-12-25 / 阅读(160) / 评论(0) 分类 办公室英语口语

第66期:In a Stationary Store Y:I'd like to see that pen,please. Y:我想看一看那支笔。 X:You mean fihis one? X:您说这支吗? Y:No,the other one in the brown case. Y:不是,是棕色盒子的那一支。 X:Oh,this one.Here. X:哦,这

发表于:2018-12-26 / 阅读(169) / 评论(0) 分类 出国旅游口语一本通

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(166) / 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(258) / 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(185) / 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(176) / 评论(0) 分类 Scientific American(五)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(138) / 评论(0) 分类 阅读空间

Are you a normal person? 你是正常人吗? During a visit to the mental asylum, a visitor asked the director ..., What is the criterion that defines a patient to be institutionalized? Well... said the director, we fill up a bathtub, and we offe

发表于:2019-02-06 / 阅读(160) / 评论(0) 分类 趣味英语

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(190) / 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(147) / 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(173) / 评论(0) 分类 柯南脱口秀
学英语单词
-nomics
4th brain ventricle
acute delirium
Arapkir
aumf
banister
banking administration
barabattoia amicorum
basal contact
bch.
berkleasmium phyllostachydis
bitch box
blood-thymus barrier
Bromley-by-Bow
Cagan's adaptive expectation model
Capistrano Beach
celluar localization
chlorophyr
chrysosoma floccosum
coprophobic
crawler-type truck
cross screw
cyps
cytophagous
dendritic structure
designy
egorov
endless love
epithelial lining
erythrolitmin
extraordinary jubilee
failure cost function
fly-borne
follicular iritis
fragment peak
frugality
gershoff
greneker
head bolt
hexapodic
high frequency ferrite
humen
idle component
induction shock
jannell
kernel of an integral equation
kernicterus
laggers
leathem
lighting chain
liverishness
lygus bugs
lyv-
manish
mast cell disease
medical attendance
membrane element
mordant (agent)
much-hyped
muhafazah
multifidene
multiple-cell echo
narcotic antagonist
nasal deviation
Nicol's radiometer
nonseparable
nurstled
old shell
one-way cock
Onich
order of nature
persons of effective employment permit
pitching stability
proceed to something
product costs
Pungsan
quadruplegic
rakes off
rational traffic
read output signal
reduction semiconductor
rotor arm
Santa sacks
Schellingism
see the doctor
semipolar
Sigamine
simulator prototype development
soyproduct
starostin
tape safe
troubleshootings
upper respiratory infections
vacuum controller air conditioner
valley moor
vas
virtual memory facilities
whole foods
wiper insert
write protection ring
wroclaw (breslau)
wyndel