邻域序列

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(453) / 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(244) / 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(296) / 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(183) / 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(171) / 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(181) / 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(122) / 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(226) / 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(171) / 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(262) / 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(191) / 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(181) / 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(141) / 评论(0) 分类 阅读空间

ALL-WHITE neighbourhoods are effectively extinct, according to The End of the Segregated Century, a recent report by the Manhattan Institute, a New York think-tank. Only 0.5% of Americas 70,000 neighbourhoods are now all-white. In fact, American citi

发表于:2019-02-07 / 阅读(171) / 评论(0) 分类 经济学人综合

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(193) / 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(152) / 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(131) / 评论(0) 分类 英语听力练习题

With the rapid pace of China's development in the past three decades, the old community culture that was forged during the planned economy is gradually falling apart. But square dancing, which has aroused lots of controversy in the past several years

发表于:2019-02-19 / 阅读(181) / 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(179) / 评论(0) 分类 柯南脱口秀

Poverty, crime and education 贫困、犯罪与教育 The paradox of the ghetto 贫民窟的悖论 Unnervingly, poor children seem to fare better in poor neighbourhoods 令人奇怪的是,穷人家的孩子若是生活在贫困区域,表现反而更

发表于:2019-02-24 / 阅读(137) / 评论(0) 分类 经济学人文艺系列
学英语单词
abiogenic organic molecule
aflatoxins M
Aiari, R.
al ashmunayn
at a low ebb
betouch
bias crosstalk
biocommunication
branch carry setting
butch game
cettia fortipes dividiana
chaplet area
cheese-bowl
citizen's right
Clypeaster
contrast telephotometer
country map
Culworth
customer vendor perception
direct cooling
dohyo matsuri
emergency capacity
epicists
exter
external feedback
extrusion under vacuum
faceted pebble
fartherthwaith
fax gateway
file extraction cycle
filesizes
filterpress
firepits
Fribourg, Cant.de
genetic types of natural gas
genus Cryptobranchus
gland end cover
going down on
gold hydroxise
GVHD
hasquet
heat-transfer cycle
hernial reposition
HGML
ice-bunker
integer quantum hall effect
intrinsically stable superconductor
irrotulate
kathianiidae
Lautoka
level vial
licensed products
maledery
mangnotantalite
Maria I.
merkt
misliterate
morehand
myeloclast
net cycle time
no-strike list
O. Ni
odd-even bit
old moneys
opening of bids
pearlite (perlite)
pickling additive
put the lid on sth
pyrolysis tube furnace
quakings
radiosonde observation (raob)
recieves
recourse to barred claims by set off
redemandable
refinability
regular organization
ring of numbers
robinett
rope-lay conductor
safety spring trip
sanguinolaria atrata
seethed
self orthogonal block code
sentencehood
shortcutted
Sinfra, Dép.de
Spirochaeta pseudoicterogenes
St-Chély-d'Aubrac
steinar
STRIKEX
syntax representation
thermal water pollutilon
through the agency of a broker
Toomas
tooter
trademark symbol
Transnational Income
true absorption coefficient
verify mode
wire stirrer
xxviest