散布重复性DNA

赖世雄高级美国英语 lesson 10

Lesson 10， Marlena Smalls and The Gullah： The Revival of a Unique Community 原音再现？ Does the name Marlena Smalls ring a bell？ Probably not. At least not yet. If this large woman with an even larger smile and sparkling eyes has her way， howeve

发表于:2018-11-27 / 阅读(626) / 评论(0)

赖世雄高级美国英语

马克吐温最佳短篇小说 08 A True Story Repeated Word for Word as I Heard It

A True Story Repeated Word for Word as I Heard ItIt was summer time, and twilight. We were sitting on the porch of the farm-house, on the summit of the hill, and Aunt Rachel was sitting respectfully below our level, on the steps, for she was our serv

发表于:2018-12-06 / 阅读(278) / 评论(0)

马克吐温最佳短篇小说

数学英语 33 Is Multiplication Repeated Addition?

by Jason Marshall In past articles weve talked at length about three of the big four traditional processes used in basic arithmetic: addition (see also How to Add Quickly), subtraction, and division. However, for one reason or another, we havent yet

发表于:2018-12-07 / 阅读(186) / 评论(0)

数学英语

UNIT 2 DNA Lesson 10 What Is DNA?

[ti:UNIT 2 DNA Lesson 10 What Is DNA?] [0:02.300]UNIT 2 第二单元 [0:03.936]DNA [0:06.098]Lesson 10: 第10课： [0:07.918]What Is DNA? 什么是DNA？ [0:10.668]THINK ABOUT IT! 想一想！ [0:12.400] Do you and the students near you look the sam

发表于:2018-12-10 / 阅读(242) / 评论(0)

河北教育初中英语（初中起点）九年级下

【英语早间课堂】教您一招说婚姻(7)之二

今日课题：（续285期）各位亲爱的朋友们，非常高兴您如约守候早间课堂，我是Juliet。上回我们知道了wedded bliss是指婚后的生活极度幸福美满。今天我们回到例句中来看看这2个例句的意思。

发表于:2018-12-27 / 阅读(135) / 评论(0)

英语早间课堂

【英音模仿秀】重回开罗街头

模仿文本： But first, over the last few days, the streets of Cairo have once again been a scene of mass protests. Some have marched in support of the new president, Mohammed Morsi, while others oppose his recent move to take new powers. There ar

发表于:2018-12-28 / 阅读(151) / 评论(0)

英音模仿秀

研究:爱走神的孩子更聪明

hildren whose minds wander might have sharper brains, research suggests. 研究显示，那些爱走神的孩子也许脑子更灵活。 A study has found that people who appear to be constantly distracted have more working memory， giving them the

发表于:2019-01-08 / 阅读(221) / 评论(0)

英语阅读理解

VOA标准英语2011--Newly-Arrived Somali Refugees Crowd Dollo Ado Center

Newly-Arrived Somali Refugees Crowd Dollo Ado Center The flow of Somali refugees into Ethiopia appears to be picking up again as Kenyan troops advance into southern Somalia, raising security fears. As dusk falls at the Dollo Ado transit station on th

发表于:2019-01-14 / 阅读(228) / 评论(0)

VOA标准英语2011年(十月)

VOA标准英语2014--本地蜜蜂可能帮助拯救农作物

Native Bees May Help Save Crops 本地蜜蜂可能帮助拯救农作物 BELTSVILLE, MARYLAND In June, U.S. President Barack Obama called for a federal strategy to promote the health of bees and other pollinators that have been declining. The honeybee

发表于:2019-01-14 / 阅读(159) / 评论(0)

VOA标准英语2014年(八月)

伊朗将阻止美国对本国的影响

伊朗将阻止美国对本国的影响 WASHINGTON Iran's supreme leader, Ayatollah Ali Khamenei, vowed that even if a nuclear deal goes through, Iran will not open its doors to foreign influence. Khamenei's feisty speech Monday came as Iran's chief

发表于:2019-01-14 / 阅读(135) / 评论(0)

VOA标准英语2015年(十二月)

美国国家公共电台 NPR Old Boy Band Sings For Peace And Goodwill In 2017

DAVID GREENE, HOST: OK. Nigeria has this rich cultural heritage and many fine singers. But one group that burst onto the scene over the new year is grabbing a lot of attention. They sing for peace, and they have been called a boy band. Though, is tha

发表于:2019-01-16 / 阅读(282) / 评论(0)

2017年NPR美国国家公共电台1月

美国国家公共电台 NPR Librarian Nancy Pearl Picks 7 Books For Summer Reading

STEVE INSKEEP, HOST: Nancy Pearl is with us once again. It's the first day of summer, and Nancy, who regularly brings us book recommendations, has some for summer reading. Hope you get a chance to check them out. Hi there, Nancy. NANCY PEARL: Hi, Ste

发表于:2019-01-17 / 阅读(168) / 评论(0)

2018年NPR美国国家公共电台6月

留学书单：去美国求学之前必读的5本书

Heading Stateside for your own voyage of discovery? Take some inspiration from a couple of these titles. 即将去美利坚开启你的探索之旅吗？先来读读下面这几本书获得一点启发吧。 1. JACK KEROUAC, ON THE ROAD 1. 《在路上

发表于:2019-01-22 / 阅读(184) / 评论(0)

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【时间旅行者的妻子】87

Its Henry, right? I shake my head, and put my finger to my lips. We have arrived at the girls gym. We walk into the locker room and abracadabra! all the girls stop talking. Then theres a low ripple of talk that fills the silence. Helen and I have our

发表于:2019-01-29 / 阅读(178) / 评论(0)

时间旅行者的妻子

VOA标准英语2010-Climate Hastened Collapse of Angkor, Capi

Scientist uses tree rings to reconstruct 13th century climate Art Chimes | Washington, DC 05 April 2010 Photo: Photos.com Related Links: Angkor paper (full text) Buckley lab We started seeing these big, giant periods of drought that took place around

发表于:2019-01-31 / 阅读(153) / 评论(0)

VOA标准英语2010年(四)月

CCTV9英语新闻：园博会上羊驼吸引人群

Things are certainly wild over at the Garden Expo, apart from our much anticipated quacky visitor, the Expo is also hosting some smaller, cuddlier friends. 园博会上充满了新奇的事物，除了人们盼望已久的重量级嘉宾外，园博会

发表于:2019-02-05 / 阅读(187) / 评论(0)

CCTV9英语新闻2013年09月

高效英文电子邮件的7条守则

Your clients and colleagues dont have time to engage fully with every e-mail they get. Some of them receive hundreds of messages per day. Thats why they start with the ones they can deal with quickly. They may never get around to answering or even re

发表于:2019-02-08 / 阅读(221) / 评论(0)

阅读空间

保护网络个人隐私的方法

Facebook, Google, MySpace, Twitter, the proliferation of social networking means more personal information are accessible to strangers than ever before. Facebook、谷歌、聚友网、Twitter，随着社交网站的盛行，越来越多的个人信息

发表于:2019-02-17 / 阅读(157) / 评论(0)

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经济学人:脸书的未来:下一个雅虎？(2)

Executive turnover was a leading indicator of its decline; before Ms Mayer was hired it went through four chief executives in three years. 高管更换是其衰败的先行指标；在聘请梅耶尔之前，公司在三年内换了四位首席执行官

发表于:2019-02-24 / 阅读(171) / 评论(0)

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万物简史第353期:孤独的行星(18)

We don't really know for sure because we have nothing else to compare our own existence to, 我们确实不知道，因为我们没有任何别的东西可以用来跟我们自己的存在进行比较。 but it seems evident that if you wish to end u

发表于:2019-02-25 / 阅读(168) / 评论(0)

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agkistrodon contortrixes

almagrerite (zincosite)

boltonite (forsterite)