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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
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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 produc
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During the weekend, about 10,000 people visited the US air force Globemaster at Christchurch airport. The Antarctic summer season opened today and the Globemaster was ready to take scientists and maintenance staff to Scott Base and McMurdo Base. Scot
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We certainly will go into the whole lot ,and then as I said will take a position on it, so we certainly dont want to brush anything under the carpet, we dont really sweep under the carpet, this is a serious issue and we certainly will look into it in
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VOICE ONE: I'm Bob Doughty. VOICE TWO: And I'm Faith Lapidus with EXPLORATIONS in VOA Special English. Today we travel south to one of the coldest, windiest and least populated places in the world, Antarctica. The word Antarctica comes from a Greek
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1. 关于主题型 Example 1: Oceanography has been defined as The application of all sciences to the study of the sea Before the nineteenth century ,scientists with an interest in the sea were few and far between .Certainly Newton considered some th
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