固氮基因

初级英语听力(新版) Lesson 17

初级英语听力(新版) Lesson17 What's the postage on these letters to Thailand, please? I'll have to check. Do you need anything else? Yes. A three pence stamp, please. That'll be eighty-five pence in all. I wish you wouldn't have your TV so lou

发表于:2018-12-01 / 阅读(247) / 评论(0)

初级英语听力新版

TED演讲:原子究竟有多小?(1)

You probably already know everything is made up of little tiny things called atoms 你也许已经知道所有的东西都是由微小的原子组成。 You might even know that each atom is made up of even smaller particles called protons, neutrons

发表于:2018-12-08 / 阅读(148) / 评论(0)

TED演讲教育篇

SSS 2011-01-25

This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. The Chesapeake Bay could get helped by a new antipollution expert: farmed oysters. For decades, the Chesapeake has been plagued by excess nutrients, such

发表于:2018-12-24 / 阅读(168) / 评论(0)

Scientific American(一)月

VOA慢速英语20060228a

AGRICULTURE REPORT - Bird Flu: Composting the Remains of Farm BirdsBy Mario Ritter Broadcast: Tuesday, February 28, 2006 I'm Steve Ember with the VOA Special English Agriculture Report. Farmers usuall

发表于:2019-01-02 / 阅读(137) / 评论(0)

2006年慢速英语（二）月

VOA慢速英语20060221a

AGRICULTURE REPORT - Legumes: Good for People and SoilBy Bob Bowen Broadcast: Tuesday, February 21, 2006 I'm Steve Ember with the VOA Special English Agriculture Report. Many different kinds of plants

发表于:2019-01-02 / 阅读(148) / 评论(0)

2006年慢速英语（二）月

Preparing for a Walk in Space

Broadcast: June 4, 2003 By Paul Thompson VOICE ONE: This is Ray Freeman. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLORATIONS. Today, we tell about how astronauts prepa

发表于:2019-01-02 / 阅读(257) / 评论(0)

VOA2003（上）-科技导航

SSS 2008-09-01

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?. [Spray sound.] Killing bugs? No. [Spray sound.] Deodorizing the bathroom? No. [Spray sound.] Checking for explosives, yes. Because chemists at the University of Califor

发表于:2019-01-08 / 阅读(241) / 评论(0)

Scientific American(九)月

SSS 2011-07-05

This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. If youve ever wondered where the Earth came from, the answer, it seems, is blowin in the windthe solar wind. Or so say scientists who, after examining sola

发表于:2019-01-08 / 阅读(199) / 评论(0)

Scientific American(七)月

VOA慢速英语 2007 0605a

This is the VOA Special English Agriculture Report. Sorghum farmers in eastern Uganda, working with scientists, have tested some lower-cost ways to improve their soil. Little rain and poor soil fertility are problems in that area, as in other parts

发表于:2019-01-11 / 阅读(172) / 评论(0)

VOA慢速英语2007年（六）月

VOA标准英语2011--Fukushima Plant Operator: Nitrogen Pumpi

Fukushima Plant Operator: Nitrogen Pumping Operation Going Well A plan to inject nitrogen into the containment vessel around reactor 1 at the Fukushima Daiichi power plant appears to be working, the plant owner said Thursday. Higher pressure levels h

发表于:2019-01-14 / 阅读(167) / 评论(0)

VOA标准英语2011年(四月)

托福阅读分析备考面面观

托福考试（TOEFL）是国际上最有影响力，使用最广泛的的英语水平测试之一。托福除了作为美国主流学校入学所需的标准化考试，申请签证和工作的过程中也会有需要托福成绩的机会，所以不少

发表于:2019-01-18 / 阅读(164) / 评论(0)

托福英语

外贸口语一点通第196期:货物保险之巧问巧答

Could you find out the premium rate for porcelain? 您能查一下瓷器的保险费吗？ OK, just a second. 可以，请稍等。 No problem. 没问题。 Can you tell me if particular average insurance includes compensation of goods damage? 请问单

发表于:2019-01-23 / 阅读(152) / 评论(0)

外贸英语一点通

经济学人69:欢迎来到人类纪

The geology of the planet 地球的地质情况 Welcome to the Anthropocene 欢迎来到人类纪 Humans have changed the way the world works. Now they have to change the way they think about it, too 人类改变了世界运行方式，现在，人类不

发表于:2019-01-26 / 阅读(205) / 评论(0)

经济学人综合

AGRICULTURE REPORT - Corn, Part 1

AGRICULTURE REPORT — November 26, 2002: Corn, Part 1 By Mario Ritter This is the VOA Special English Agriculture Report. Corn is an important crop in many parts of the world. However, some people ar

发表于:2019-01-30 / 阅读(187) / 评论(0)

农业与发展

GRE阅读考试难句训练法（上）

1. It is one of natures great ironies that the availability of nitrogen in the soil frequently sets an upper limit on plant growth even though the plants leaves are bathed in a sea of nitrogen gas.(3+)下述情形真可谓是自然界的一个莫大讽

发表于:2019-02-01 / 阅读(132) / 评论(0)

GRE英语

GRE阅读方法：类比思维

GRE阅读复备考之类比思维。考生在做gre阅读复习过程中也可以运用类比的思维解题。在GRE阅读中绝对不少见，也就是常说的类比题。主要说下述哪一选项所述现象和原文第N行的说法比较相像

发表于:2019-02-17 / 阅读(155) / 评论(0)

GRE英语

美国研究生入学考试难句解读-20

Onesuchnovelideais thatofinsertingintothechromosomes (25)ofplantsdiscretegenesthatarenot apartoftheplants’naturalconstitution: specifically,theideaofinsertinginto nonleguminousplantsthegenes,ifthey c

发表于:2019-02-18 / 阅读(140) / 评论(0)

英文语法词汇

英文摇滚歌曲：Fall Out Boy - Irresistible

Coming in unannounced, drag my nails on the tile I just follow your scent, you can just follow my smile All of your flaws are aligned with this mood of mine Cutting me to the bone, nothing left to leave behind You ought to keep me concealed just like

发表于:2019-02-18 / 阅读(153) / 评论(0)

英文摇滚歌曲

英语六级考试必会短语88句(1)

1.Above all：最重要的是，most important of all Above all， theyll have to discover how much nitrogen it possesses since nitrogen is4/5 of the air breathe.（2002-1） 2.Account for：解释。说明 How do you account for the truth？ 3.After

发表于:2019-02-18 / 阅读(120) / 评论(0)

大学四六级阅读

万物简史第341期:孤独的行星(6)

However, when at length they emerged into the fresh air of a London evening, 然而，当他们最后走进伦敦夜晚的新鲜空气里的时候， the bubbles sprang instantly to fizziness, memorably enlivening the digestive process. 气泡立刻泛

发表于:2019-02-25 / 阅读(133) / 评论(0)

万物简史

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behavior of the economy