双向数列

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(447) / 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(228) / 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(284) / 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(166) / 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(162) / 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(173) / 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(114) / 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(215) / 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(162) / 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(255) / 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(176) / 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(175) / 评论(0) 分类 Scientific American(五)月

以 Bumpy Ride 而一炮走红的瑞典/刚果新人歌手Mohombi,去年发布了与RB巨星Akon合作的新曲Dirty Situation,如今已发布专辑 Movemeant。 他是第一个签入著名瑞典音乐制作人RedOne旗下的新歌手,单曲 Bu

发表于:2019-01-11 / 阅读(191) / 评论(0) 分类 天籁音乐

异地恋。Long distance relationship现在大家都知道了吧,但是因为美国的地理,有一个词叫bi-coastal relationship,是不是很独特呢?

发表于:2019-01-15 / 阅读(150) / 评论(0) 分类 OMG美语

Fred: Hi, Shibika, so this is almost the end of the year, 2007. Can you tell me a bit, how was your year this year? Shibika: Yeah, I had pretty nice year actually. I went through a lot of ups and downs, and yeah, at first I did really well in my clas

发表于:2019-01-20 / 阅读(228) / 评论(0) 分类 原版英语对话1000个

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(133) / 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(181) / 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(139) / 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(117) / 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(168) / 评论(0) 分类 柯南脱口秀
学英语单词
adjudicated bankrupt
alkylarene
allfrey
alphabets
anticlumping
antifeeding
as savage as a meat oxe
attraction-selection-attrition framework
azimuth coverage
baby-sits
batura glacier
be jankety
bill of approximate estimate
black-crowned
Blsuc
cardiovectograph
clinician
close one
collector cut off current
Coudekerque-Branche
dental formula
depth measurement meter
Dess.
diapered
Didymocarpus yunnanensis
Drzl
entrust
feeder conveyor
flowering centre
form factor of the weld
fundamental law of gearing
gaccha
ganglia phrenic
gray partridges
ground relay
Gurevich effect
heading for
height of a fuzzy set
Helkesimastix
Herbeumont
hiccough
hinesville
horopters
imperative language
incontaminated
indoform
interest due
Internet Engineering and Planning Group
jacquetta
kosmochromite (kosmochlor)
Kuehneosauridae
L'va Tolstogo
land let
large bonito
light smoked fish
minidish
minimum-energy
modulare structure
multiple rotary screen
mutiple
naughtly
no more credit
overdated
overlay circuit
Oxytropis humifusa
pegomya quadrivittata
pterome
quadrigeminal plate
redeny
reindeer games
Rheum pumilum
roer
Rusanivka
safavian
salamandered
seafood newburgs
shift away
shuttleless weaving
sidak
signal gaff
Silene longicornuta
spoon sweets
steer dot
stormbird
teng hsiao-pings
teratogenic chemicals
the old woman is plucking her goose
thebaia
Theileria
throwing into
to a hair
towing spar
transfer molding
tryndle bed
Uzbek Soviet Socialist Republic
vainglories
vitrinoid group
warehouse network
wheat-corn
working electrolyte
yelled out
Zannichellia