用进废退说, (演化学说中的)用进废退说;用与不用说

疯狂英语易背作文 23.Theory and Practice

23.Theory and Practice When talking about the importance of theory and practice,some people think theory is rather empty and abstract,so we should try to pratice a lot to obtain our goals;while others maintain that practice is rather too blind and wh

发表于:2018-11-28 / 阅读(384) / 评论(0)

疯狂英语易背作文

王强英语美文 10-The 50-Percent Theory of Life

生活半对半[The 50-Percent Theory of Life] I believe in the 50-percent theory. Half the time things are better than normal; the other half, they are worse. I believe life is a pendulum swing. It takes time and experience to understand what normal

发表于:2018-11-30 / 阅读(359) / 评论(0)

王强英语美文

儿童英语读物 The Box That Watch Found Chapter 9 Benny’s Theory

The Aldens followed the bike path through North Ridge Park on their way home from Cals house. The trees sheltered them from the wind, so it was easier pedaling here. The bike path became a narrow dirt trail through the thickest part of the woods and

发表于:2018-12-06 / 阅读(241) / 评论(0)

113 The Box That Watch Found

新东方优美背诵短文50篇 Unit27:Scientific Theories

27. Scientific Theories In science, a theory is a reasonable explanation of observed events that are related. A theory often involves an imaginary model that helps scientists picture the way an observed event could be produced. A good example of thi

发表于:2018-12-08 / 阅读(504) / 评论(0)

新概念优美背诵短文50篇

河北加拿大版初中英语--Lesson 27

Lesson 27: [00:03.58]Let's Do an Experiment! [00:07.24]One Experiment,Two Theories [00:11.81]A theory is an idea.A theory predicts what will happen. [00:18.57]An experiment shows what happens. [00:23.25]BRIAN:Did you read about this experiment,Danny?

发表于:2018-12-13 / 阅读(305) / 评论(0)

河北加拿大版初中英语

高中英语人教版必修5 01

[00:08.59]Great scientists [00:12.25]John snow defeats king cholera [00:19.38]John snow was a well-known doctor in London--- [00:25.42]so famous, indeed, that he attended queen Victoria to ease the birth of her babies. [00:33.46]But he became inspire

发表于:2018-12-13 / 阅读(287) / 评论(0)

高中英语人教版必修

新东方背诵文选 L40 Cohesion-tension Theory

Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. U

发表于:2018-12-15 / 阅读(384) / 评论(0)

新东方背诵文选

ECONOMICS REPORT - Work on 'Game Theory' Wins Nobel Prize fo

ECONOMICS REPORT - Work on 'Game Theory' Wins Nobel Prize for Two Economists By Mario Ritter Broadcast: Friday, October 14, 2005 I'm Bob Doughty with the VOA Special English Economics Report. Robert A

发表于:2019-01-02 / 阅读(266) / 评论(0)

健康与经济

六级词汇与结构练习（41）

坚持不懈，直到成功。我们每天的奋斗就像对参天大树的一次砍击，头几刀可能了无痕迹。每一击看似微不足道，然而，累积起来，巨树终会倒下。这恰

发表于:2019-01-03 / 阅读(208) / 评论(0)

四六级词汇与结构练习

纯正地道美语第94期(外教讲解):Big Bang Theory

Global View - Big Bang Theory (C0094) A: Whats up? You dont look too good. B: Yeah, my head hurts, thats all. Ive been in physics class all day. Its killer! A: I liked physics. Its all math, really; arcs, curves,velocity, cool stuff. B: Yeah, yeah, b

发表于:2019-01-07 / 阅读(316) / 评论(0)

纯正地道美语

2007年VOA标准英语-Scientists Develop New Theory on How Toddlers L

By Jessica Berman Washington 03 August 2007 There's a period in the development of toddlers when they seem to learn a new word every day. There are different theories about why young children undergo what experts call a word spurt. But one psychologi

发表于:2019-01-07 / 阅读(256) / 评论(0)

2007年VOA标准英语（八月）

UNIT 4 Look into Science! Lesson 26: One Wet Danny?

[ti:UNIT 4 Look into Science! Lesson 26: One Wet Danny?] [0:00.493]UNIT 4 第四单元 [0:02.588]Look into Science! 走进科学！ [0:04.930]Lesson 26: 第26课： [0:06.840]One Wet Danny? 丹尼湿透了吗？ [0:09.028]THINK ABOUT IT! 想一想 [0

发表于:2019-01-09 / 阅读(384) / 评论(0)

河北教育初中英语（初中起点）八年级下册

【有声英语文学名著】战争与和平 Book 9（10）

Chapter 10 - Prince Andrew is introduced to Pfuel This letter had not yet been presented to the Emperor when Barclay, one day at dinner, informed Bolkonsky that the sovereign wished to see him personally, to question him about Turkey, and that Prince

发表于:2019-01-18 / 阅读(303) / 评论(0)

有声英语文学名著

The Motion of Mars

63 火星的神秘运动 DATE=6-27-01 TITLE=SCIENCE REPORT - The Motion of Mars BYLINE=Mario Ritter (Start at 59

发表于:2019-01-30 / 阅读(253) / 评论(0)

科技之光

VOA标准英语2008年-Environmentalists Urge Australia to Disuse Shar

Environmentalists are calling on Australian authorities to stop using massive nets to keep sharks away from beaches. Officials say the nets, which will be erected Monday, have saved the lives of many swimmers and surfers. But environmentalists belie

发表于:2019-02-05 / 阅读(191) / 评论(0)

VOA标准英语2008年（九月）

幸福之道

The Road To Happiness It is a commonplace among moralists that you cannot get happiness by pursuing it. This is only true if you pursue it unwisely. Gamblers at Monte Carlo are pursuing money, and most of them lose it instead, but there are other way

发表于:2019-02-06 / 阅读(245) / 评论(0)

英语美文

英语听力—环球英语 1226 Birth Order Theory

Voice 1 Welcome to Spotlight. Im Rena Dam. Voice 2 And Im Liz Waid. Spotlight uses a special English method of broadcasting. It is easier for people to understand - no matter where in the world they live. Voice 1 Imagine a family with three children.

发表于:2019-02-14 / 阅读(309) / 评论(0)

环球英语 Spotlight

美剧《生活大爆炸》搞笑英文主题曲：Big Bang Theory

美剧《生活大爆炸》搞笑主题曲：Big Bang Theory Artist:Barenaked Ladies Song:Big Bang Theory Our whole universe was in a hot dense state, 宇宙一度又烫又稠密 Then nearly fourteen billion years ago expansion started. Wait... 140亿年

发表于:2019-02-20 / 阅读(256) / 评论(0)

流行英文歌曲

【趣谈英语】胎记谈-The Birthmark Theory

Pre-Listening Vocabulary blemish: an imperfection; a small flaw fade: to become less bright reincarnation: the belief that living beings die and then are reborn in a new form spear: a long sharp weapon that punctures the skin The Birthmark Theory Bir

发表于:2019-02-27 / 阅读(277) / 评论(0)

趣谈英语

omg美语：0308 OMG! 美语 Big Bang Theory: You Made My Day!

我们今天一起来看看白洁最喜欢的电视剧之一！Big Bang Theory! 生活大爆炸! 我们一起来学6季17集的美语说法！ 1) How'd it go? 过得怎么样？2) Body language 身势语。如果你能看出某人有什么感觉，那就

发表于:2019-03-02 / 阅读(266) / 评论(0)

OMG美语

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