[科技] 自然科学理论

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NO BOUNDARIES Imagine this: you are twenty-one years old and a promising graduate student at one of the top universities in the world. One day, your doctor tells you that you have an incurable disease and may not have more than twelve months to live

发表于:2018-12-04 / 阅读(61) / 评论(0)

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February the 12th is Darwin Day. It is to celebrate the anniversary of the birth of Charles Darwin on February 12, 1809 and his life as a scientist. This day also aims to encourage children to get into science. Darwin was one of the worlds greatest s

发表于:2018-12-04 / 阅读(77) / 评论(0)

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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 this is found in the kinetic

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VOA慢速英语2009-EXPLORATIONS - The Father of Evolution Turns 200

VOICE ONE: I'm Steve Ember. VOICE TWO: Charles Darwin And I'm Barbara Klein with EXPLORATIONS in VOA Special English. This month is the two hundredth anniversary of the birth of one of the most influential thinkers in science history. Charles Darwin

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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(356) / 评论(0)

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NO BOUNDARIES Imagine this: you are twenty-one years old and a promising graduate student at one of the top universities in the world. One day, your doctors tells you that you have an incurable diseas

发表于:2018-12-12 / 阅读(221) / 评论(0)

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UNIT 4 Look into Science! Lesson 25: Let's Do an Experiment!

[ti:UNIT 4 Look into Science! Lesson 25: Let's Do an Experiment!] [0:00.466]UNIT 4 第四单元 [0:02.644]Lessons 25～32 第25~32课 [0:05.438]Look into Science! 观察科学！ [0:07.483]You Will Learn 你将学到 [0:08.630]Functions 实际应用

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发表于:2018-12-15 / 阅读(173) / 评论(0)

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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Its called the broken windows theory and it says that in a neighborhood where buildings have broken windows, people are more likely to engage in bad beha

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Darwin Under Attack In US Science Classroom 美国自然科学课堂抨击达尔文进化论 The USconstitution guarantees separation of church and state. This means among other things that religious

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SCIENCE IN THE NEWS - Evolution and Intelligent Design By Jill Moss Broadcast: Tuesday, March 15, 2005 (MUSIC) VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Sarah Long. VOICE TWO

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科技之光

SCIENCE IN THE NEWS - Stephen Hawking and Black Holes / Quan

SCIENCE IN THE NEWS - Stephen Hawking and Black Holes / Quantum Theory By Caty Weaver Broadcast: Tuesday, August 17, 2004 VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Bob Dought

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A:Its been a long time since I last saw you. Where have you been? B: The exams and plans I have to turn in in are driving me crazy, I dont even have time to sleep. A: Its the same for me. Im up to my neck in work, but at least finals are coming soon

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VOICE ONE: This is SCIENCE IN THE NEWS in VOA Special English. I'm Bob Doughty. VOICE TWO: And I'm Doug Johnson. November twenty-fourth marked the one hundred fiftieth anniversary of one of the most influential books ever written. Naturalist Charles

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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

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In general when we refer to a theory we mean something that's not proven yet. In science it's different, as Yael and Don discuss in this Moment of Science. Y: Today, on A Moment of Science, we clear up the difference between a scientific theory and a

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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 this is

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absolute blood count

acrocladium cuspidatum(l.)lindb.

age variability scale

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allopregnandiol

artificial hypothermia

at the minute

atomic defect absorption

baby doll

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bed piece