反Z变换

英语作文怎样复习

作文和听力，阅读一样，可以早做准备。现在流行的复习方法是从下半年复习，甚至是考试前3个月才开始复习。复习的教材无一例外的是考试虫系列的万能作文：背一二十篇作文模式，背一二

发表于:2018-12-12 / 阅读(61) / 评论(0)

英语学习方法

SSS 2009-02-11

This is Scientific American's 60-Second Science. I'm Christie Nicholson . Got a minute? The lure of gambling clearly comes from the chance of winning. But how exciting is it to almost win? A study in the February 12th issue of the journal Neuron look

发表于:2019-01-08 / 阅读(116) / 评论(0)

Scientific American(二)月

SSS 2011-08-12

This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a Minute? What's the best way to find out if an unknown mixture contains a specific substance, like an environmental contaminant? You could use an expensive, bulky gas chromatogr

发表于:2019-01-08 / 阅读(113) / 评论(0)

Scientific American(八)月

现在英国流行哪种口音

在中国，普通话作为官方语言的地位日益巩固。然而在英国，为什么大多数的英国人不遵循标准的发音[standard pronunciation or RP(received pronunciation)]，却喜欢操着一口地方口音呢？难道英国人不认

发表于:2019-01-11 / 阅读(77) / 评论(0)

实用英语

投资者寻求避险:黄金、石油价格上涨

Gold, Oil Prices Up as Investors Seek Safe Haven 投资者寻求避险:黄金、石油价格上涨 NEW YORK The up-and-down prices of oil and gold mirror the unsettled world situation, and both reflect the economic squeeze most nations currently face

发表于:2019-01-14 / 阅读(82) / 评论(0)

VOA标准英语2016年(三月)

雅思阅读中的文法结构剖析

1. The work that Tim Pons and his colleagues published last week is basic research into the portion of the brain, the cortex, that one scientist says is responsible for all the interesting things we do. 剖析：在这个长句中, 共有两个定语从

发表于:2019-01-17 / 阅读(124) / 评论(0)

雅思英语

经济学人117:温室气体监测而非热空气

Science and Technology Greenhouse-gas monitoring Not hot air 科技温室气体监测而非热空气 A new, private initiative should help show which gases come from where 一项新的私人倡议或许能够表明各种气体从何而来 IN 1955 a

发表于:2019-01-26 / 阅读(63) / 评论(0)

经济学人科技系列

经济学人23:政治家,演说家,改革推动者约翰·布莱特

Books and Arts; Book Review;19th-century British politics;Third man; 文艺；书评；19世纪英国政坛;第三人; John Bright: Statesman, Orator, Agitator.By Bill Cash. 《约翰布莱特：政治家, 演说家, 改革推动者》;比尔凯西。

发表于:2019-01-26 / 阅读(77) / 评论(0)

经济学人人物系列

生活大爆炸第二季第十三集_3

Popular choices include, tea,coffee,cocoa. Popular: 流行的 cocoa: 可可最受欢迎的有茶咖啡可可 I see. No,no,no,wait. Don't hang up yet. hang up: 挂断了解了解别先别挂 What about a recreational activity? recreational activity:

发表于:2019-01-28 / 阅读(72) / 评论(0)

生活大爆炸第二季

万物简史第62期:事物的测定(9)

Principia's production was not without drama. To Halley's horror, just as work was nearing completion Newton and Hooke fell into dispute over the priority for the inverse square law and Newton refused to release the crucial third volume, without whic

发表于:2019-01-29 / 阅读(54) / 评论(0)

万物简史

万物简史第59期:事物的测定(6)

Quite what Halley expected to get from him when he made his unannounced visit in August 1684 we can only guess. But thanks to the later account of a Newton confidant, Abraham DeMoivre, we do have a record of one of science's most historic encounters:

发表于:2019-01-29 / 阅读(49) / 评论(0)

万物简史

杠杆ETF首次登陆香港交易所

Hong Kongs first leveraged exchange traded funds have launched in a bid to tap Asian demand for structured products, even as western regulators are examining the mechanics of leveraged and other riskier forms of ETFs. 香港首批杠杆交易所交易基

发表于:2019-02-01 / 阅读(61) / 评论(0)

英语新闻

如果你的数学老师长这样还能专心听课吗

Heres one way to make sure you have perfect attendance in your class: 让你把全部注意力放在课堂上只有一种方法： Meet Pietro Boselli: Obviously, hes ridiculously good-looking. 来见见我们的彼得罗博塞利：看吧看吧，他真

发表于:2019-02-06 / 阅读(91) / 评论(0)

阅读空间

智能手机影响夫妻生活

You know how it goes: youre trying to talk to your grandchildren, but theyre constantly checking their beeping phones. Im listening . . . they insist. Except you know only too well theyre not. At home, over dinner, you want to catch up with your husb

发表于:2019-02-07 / 阅读(111) / 评论(0)

阅读空间

揭秘爱尔兰的"爱情合约"

爱尔兰是信奉天主教的国家，禁止离婚。所以，两人结婚时必须选择婚姻关系的期限1年至100年。这种婚姻法的高明之处在于，婚姻的期限恰好与结婚的费用成反比。如果你选择了1年期限，将支

发表于:2019-02-09 / 阅读(50) / 评论(0)

英美文化

万物简史第231期:马斯特-马克的夸克(3)

Particles can come into being and be gone again in as little as 0.000000000000000000000001 second (10-24). Even the most sluggish of unstable particles hang around for no more than 0.0000001 second (10-7). 粒子可以在短达0.000 000 000 000 000 0

发表于:2019-02-17 / 阅读(72) / 评论(0)

万物简史

像爱尔兰人一样去结婚

和同事聊天时,她突然问我:当时,他是怎么向你求婚的,浪漫吗?我一愣,随即笑了:我老公是很木讷的人呢,你说会浪漫吗?虽然这样说,我心里却泛起甜丝丝的感觉来。他确实从来不浪漫,他的求婚没有

发表于:2019-02-18 / 阅读(93) / 评论(0)

英语美文

怎样从泡沫中获益？

Over the last 13 years, investors have experienced some of the largest financial bubbles in history. Asian currencies rose and fell, technology and Internet shares suffered staggering losses, oil and other commodities rode a wild roller coaster, and

发表于:2019-02-18 / 阅读(70) / 评论(0)

阅读空间

英语六级作文常用词组句型

一．上升增长1．add up to 增加了eg. The total amount of added up to 14 billion pounds（14%） in 1994. 2． to jump to / to soar to 一跃达到/ 猛增到 eg. The total working days lost soared to 10 million in 1979. 3．an increase of ab

发表于:2019-02-18 / 阅读(112) / 评论(0)

四六级写作指导

这些经济热词你都懂吗？

Law of Supply Demand: This is the founding block of economics. Whenever supply of something increases its price decreases and whenever supply decreases price increases. Thus, when you have excess production of corn, food prices decrease and vice vers

发表于:2019-02-25 / 阅读(85) / 评论(0)

英文语法词汇

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