拟随机数的序列

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(217) / 评论(0) 分类 Scientific American(十二)月

by Jason Marshall Would you believe its possible to send someone a secret message secured with absolutely unbreakable encryption using only a bit of simple arithmetic? Well, it isthe solution is surprisingly simple and was used by British, German, an

发表于:2018-12-07 / 阅读(165) / 评论(0) 分类 数学英语

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(210) / 评论(0) 分类 数学英语

It is Jason Statham, he is the star of the new movie safe, he has to save a math prodigy from a ruthless gang or really a couple of them, the movie opens April 27th , joining us now the toughest staff of the tough in Hollywood, Jason Statham, Jason,

发表于:2018-12-11 / 阅读(125) / 评论(0) 分类 访谈录2012年

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(268) / 评论(0) 分类 Scientific American(十)月

06 Guessing a Number GLOSSARY contest a competition; an event where many people participate to try to winsomething * The contests first-place winner will win a new car, and the second-place winnerwill win a new bicycle. guess an answer that one provi

发表于:2018-12-26 / 阅读(248) / 评论(0) 分类 2010年ESL之日常生活

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(205) / 评论(0) 分类 2014年ESL之商务英语

by Jason Marshall In the last few articles, weve talked about fractions and percentages, and soon enough well see that these ideas naturally lead us into the world of decimal numbers. But before we head down that path, lets take a quick detour to tal

发表于:2019-01-02 / 阅读(258) / 评论(0) 分类 数学英语

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(305) / 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(243) / 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(221) / 评论(0) 分类 Scientific American(五)月

hen you need a piece of information, is it at your fingertips? Or are you constantly chasing your info like papers in the wind? 当你需要一则信息时,它就在你手头吗?或者你总是像追逐飘在风中的纸片一般寻找你要的信息

发表于:2019-01-08 / 阅读(244) / 评论(0) 分类 英语阅读理解

Basic Steps Help Protect Personal Information From Hacking U.S. government officials say the surveillance covered only metadata - the patterns of the phone calls and internet messages - not the substance of the communications. According to reports, a

发表于:2019-01-14 / 阅读(151) / 评论(0) 分类 VOA标准英语2013年(六月)

Random numbers are hugely important for modern computing. They're used to encrypt credit card numbers and emails. To inject randomness into online gaming. And to simulate super complex phenomena, like protein folding or nuclear fission. But here's th

发表于:2019-01-20 / 阅读(180) / 评论(0) 分类 2016年Scientific American(九)月

By Tendai Maphosa London 23 November 2007 A former United Nations Special Envoy for AIDS in Africa, Stephen Lewis warns that revised UNAIDS HIV statistics should not be seen as a signal that the fight against the pandemic can be relaxed. He says that

发表于:2019-01-31 / 阅读(217) / 评论(0) 分类 VOA常速英语2007年(十一月)

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(176) / 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(235) / 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(179) / 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(160) / 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(219) / 评论(0) 分类 柯南脱口秀
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