位序列独立性

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(505) / 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(288) / 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(340) / 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(209) / 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(201) / 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(201) / 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(146) / 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(263) / 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(202) / 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(301) / 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(235) / 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(213) / 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(224) / 评论(0) 分类 雅思英语

只要坚强一点点:A Little Bit Stronger Artist:Sara Evans Song:A Little Bit Stronger Woke up late today and I still feel the sting of the pain But I brushed my teeth anyway I got dressed through the mess and put a smile on my face I got a l

发表于:2019-01-31 / 阅读(201) / 评论(0) 分类 流行英文歌曲

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(171) / 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(229) / 评论(0) 分类 英语新闻

JUBA, July 9 (Xinhua) -- The Republic of South Sudan declared independence Saturday, waiting to be recognized as the 193rd member of the United Nations and hoping to keep peace with the north after decades of war. Speaker of South Sudan Legislative A

发表于:2019-02-09 / 阅读(163) / 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(176) / 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(156) / 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(208) / 评论(0) 分类 柯南脱口秀
学英语单词
accessed bit
air-texturing technique
algormortis
annular plate valve
anti-itch
assorting effect
axis cylinder
Ben Jonson
Benbow, John
blood-staining
braided river
brand-names
breeding cow
Bromocryptin
brown hay
by-pass water meter
callaloos
Celtic law
chain molecule
chloride rubber paint
cold front rain
cold rolled section
conclusum
confirmor
containment building
continuous passenger traffic
Contract Price Adjustment
crotaline
dental gangrene
description of graphics macros
discharging quay
eastlund
educational broadcasting
factory overhead burden
Fagerlindia scandens
fragment particle
gold-trafficker
gpttatus
hand-to-mouth purchasing
have someone upon the hip
helical instability
high chromium content ceramet
hippotragus
Hollywood
hyperthelia
IIS - Internet Information Server
individual attributes
infauna
interlimb angle
lentiginosis
links and links knitting
logic system function test
marshalss
Maxwell Wagner mechanism
meditatio
microvariometer
monochoriate
moudon
mucorrhea
narrow-line spectrum
nasal chisel
nonrestraint
optimizing principle
outwale
Pedicularis tsekouensis
periodic frame
pipe synchronization
planting spade
Poiseux
pyrotritaric acid
ramp type
raw information
return conduit
reversible competitive antagonism
rhodotorula slooffiae
scanning pitch
shallow dredging
Sicar's sign
side-facing seat
silver halide
single-focusing mass spectrograph
site quality of locality
Startup program
Stijl,De
strlated muscle disc
Strobilanthes densa
tenonitis of biceps brachii
topology tree
TORMANTOR
trichogrammatoidea bactrae
unadapted
univoltinism
uranium hexaethoxide
Veratrum mengtzeanum
Verneuil process
Vernonia arborea
vesicula optica
waistcoateers
weak caustic liquor
wet extrusion molding
ytb
zinc-base alloy for die casting