un. 扩充的线性规划系统

英语语法：过去将来完成进行时

过去将来完成进行时指动作持续到过去某时后的另一时刻且进行下去，常用结构为would/should have been doing。例如： A: What would John have been working on after 11pm last Thu evening? 约翰上周四晚11点后将一直

发表于:2018-12-18 / 阅读(155) / 评论(0)

英文语法词汇

走进剑桥大学第7期:没有铆钉的数学轿

The Mathematical Bridge 没有铆钉的数学轿 The Mathematical Bridge was built in 1749 by James Essex the Younger to the design of William Etheridge. It had subsequently been rebuilt to the same design in 1866 and 1905. 数学桥是1749年詹姆斯

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走进剑桥大学

世界节假日博览第47期:圆周率日

Pi Day is on March 14. This is the day when mathematicians and geometry enthusiasts around the world get together and celebrate the mathematical constant of Pi. There are two good reasons to hold Pi Day on March 14. The first is that in the American

发表于:2018-12-29 / 阅读(128) / 评论(0)

世界节假日博览

Schoolyard Habitats

By Jerilyn Watson Broadcast: November 20, 2003 This is Steve Ember with the VOA Special English Education Report. Educational gardens called

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VOA2003（下）-教育与新闻

Earthquake1 Warning System

Broadcast: May 16, 2003 By George Grow This is the VOA Special English Environment Report. Scientists in the United States have developed a computer program that they say could provide an early warnin

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VOA2003（上）-科技导航

北师大版高中英语模块10--Unit29(2)-5

[00:00.00]5 We all have genius within us [00:04.35]For years,scientists have speculated [00:06.66]that the talents possessed by [00:08.13]so-calledidiots savants- [00:10.46]as depicted by Dustin Hoffman in the film [00:12.97]Rain Man-may be accessibl

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北师大版高中英语模块10(选修)

VOA慢速英语 2008 1001b

This is the VOA Special English Health Report. Governments, businesses and other groups have promised to add three billion dollars to the fight against malaria. The promises came last week at a meeting at the United Nations in New York. The money wi

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VOA慢速英语2008（十）月

口译考试中听力要注意的词组（下）

51, fill a prescription 按处方抓药 Would you please fill this prescription for me? 52, fill in for 代替; 同义：fill ones place(position, shoes); take the place of; take over Say, Dave, can you fill in for me tonight at the restaurant? Id li

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英语口译

托福听力单句训练附答案:第94期

听力题目： 7. (A). Alex did fine in calculus. (B). Calculus was hard for Alex. (C). Alex had trouble getting to math class. (D). It used to be difficult for Alex to find us. 8. (A). Why is California so popular? (B). California is my favorite st

发表于:2019-01-18 / 阅读(224) / 评论(0)

托福听力单句训练

英语口语之精华语句

1. What college are you attending? 2. What are you majoring in? /What's your major? 3. What grade /class〖年级和班级〗are you in? 4. What school did you go to? /Where do you go to school? 5. How many courses are you taking this semester? 6. I'

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天天商务口语

英语六级听力考试预测模拟练习6

[00:00.00]Listening Comprehension (20 minutes) [00:-1.00]Section A [00:-2.00]Directions:In this section,you will hear 10 short conversations.At the end of each conversation,a question will be asked about what was said.Both the conversation and the qu

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英语六级听力练习集锦

走进牛津大学第26期:牛津大学最大的学部

The Medical Sciences Division is the largest academic division in the University of Oxford, and also an internationally renowned centre for biomedical and clinical teaching and research. 医学部是牛津大学最大的学部，也是一个国际知名

发表于:2019-01-29 / 阅读(176) / 评论(0)

走进牛津大学

VOA慢速英语20060323a

EDUCATION REPORT - Intel Science Talent Search Winners AnnouncedBy Nancy Steinbach Broadcast: Thursday, March 23, 2006 I'm Steve Ember with the VOA Special English Education Report. An eighteen-year-o

发表于:2019-01-30 / 阅读(187) / 评论(0)

2006年慢速英语（三）月

英语杂谈：58 The mathematical marriage predictor

You might not think that mathematicians have anything particularly relevant to say about your love life. But you'd be wrong--if we're talking about James Murray, a mathematician at the University of Washington in Seattle who teamed up with Psychologi

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英语杂谈

学个词Learn a Word 第1667-extended

今天我们要学的词是 extended。Extended 是形容词，延长的，长期的。He has been on extended sick leave since this summer. 他因为生病，从今年夏天就开始休长假。圣诞节前，Many retail stores are offering extended

发表于:2019-02-05 / 阅读(165) / 评论(0)

英语单词荟萃

“结石”怎么说

结石怎么说如果说，calculus（微积分）还有一层含义，即表示日常最令人痛之欲绝的结石，您会不会很很惊异？calculus（微积分）和calculus（结石）之间从词源上讲有无联系呢？今天的词海拾贝

发表于:2019-02-07 / 阅读(196) / 评论(0)

英语口语

2015年CRI Exclusive Interview with Sebastian Buckup, Head of Programming with the World Economic Forum

This year's Summer Davos wraps up in the city of Dalian Friday afternoon. Our reporter Luo Yu caught up with Sebastian Buckup, Head of Programming with the World Economic Forum, at the closing ceremony. He talks about what he thinks of this year's co

发表于:2019-02-13 / 阅读(214) / 评论(0)

2015CRI中国国际广播电台

职场英语Stating Your Education 说明教育程度

Stating Your Education（说明教育程度）Useful Courses for English teaching include: Psychology, teaching methodology, phonectics, rhetorie, grammar, composition. 对英语教学有用课程包括：心理学、教学方法论、语音学、修辞

发表于:2019-02-13 / 阅读(182) / 评论(0)

实用英语

PBS高端访谈:缅怀另类的天才:约翰·纳什

HARI SREENIVASAN: Returning now to the death of Nobel Prize-winning mathematician John Nash. I'm joined by Nash's colleague and friend Robbert Dijkgraaf, director of the Institute for Advanced Study in Princeton, New Jersey. So, first off, my condole

发表于:2019-02-17 / 阅读(178) / 评论(0)

PBS访谈社会系列

CCTV9英语新闻：Aleppo ceasefire extended by 48 hours

The ceasefire in the northern Syrian city of Aleppo that was due to expire last night has been extended by 48 hours. The extension comes after nearly 300 deaths in the city since the end of last month. Increased violence wrecked the 10-week-old parti

发表于:2019-02-18 / 阅读(192) / 评论(0)

cctv9英语新闻2016年

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