叠彩雅思6.5分寒假班,雅思.桂林雅思培训,桂林出国语言培训,雅思辅导班、雅思备考,桂林环球雅思经典格言:喜欢小孩子孩,善待小孩子孩。。
桂林环球雅思培训课程:
雅思基础(保
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雅思精品(6分)班
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6.5分高分班(选修外教口语)
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雅思mini精英班
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雅思“6分无限时”班
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高中生雅思“6段式”
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6.5分高分(选修词汇或语法)
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“4+1”式预备a套餐班
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“4+1”式预备b套餐班
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雅思狂人写作系列课程
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海外求生口语班
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雅思全真语法课
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雅思外教口语集训课程
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“四大名教”精讲点题班
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r1(高分级) r2(强化级)课程
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雅思语法提高班
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叠彩雅思6.5分寒假班,雅思.
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r3(预备级+强化级)课程
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雅思全真词汇班
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雅思强化(6分)班
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桂林雅思培训,桂林出国语言培训,雅思辅导班、雅思备考,桂林环球雅思经典格言:学而不厌,诲人不倦。——《论语·述两》叠彩雅思6.5分寒假班,雅思.。
叠彩雅思6.5分寒假班,雅思.雅思模拟试题在雅思备考过程中所起的作用不可小觑,通过模拟练习题,我们可以很直接地了解到自己的备考状况,从而可以更有针对性地进行之后的复习。希望以下内容能够对大家的雅思备考有所帮助!
Search begins for 'Earth' beyond solar system
Staff and agencies
Wednesday December 27, 2006
Guardian Unlimited
1. A European spacecraft took off today to spearhead the search for another "Earth" among the stars.
2. The Corot space telescope blasted off aboard a Russian Soyuz rocket from the Baikonur cosmodrome in Kazakhstan shortly after 2.20pm.
3. Corot, short for convection rotation and planetary transits, is the first instrument capable of finding small rocky planets beyond the solar system. Any such planet situated in the right orbit stands a good chance of having liquid water on its surface, and quite possibly life, although a leading scientist involved in the project said it was unlikely to find "any little green men".
4. Developed by the French space agency, CNES, and partnered by the European Space Agency (ESA), Austria, Belgium, Germany, Brazil and Spain, Corot will monitor around 120,000 stars with its 27cm telescope from a polar orbit 514 miles above the Earth. Over two and a half years, it will focus on five to six different areas of the sky, measuring the brightness of about 10,000 stars every 512 seconds.
5. "At the present moment we are hoping to find out more about the nature of planets around stars which are potential habitats. We are looking at habitable planets, not inhabited planets. We are not going to find any little green men," Professor Ian Roxburgh, an ESA scientist who has been involved with Corot since its inception, told the BBC Radio 4 Today programme.
6. Prof Roxburgh said it was hoped Corot would find "rocky planets that could develop an atmosphere and, if they are the right distance from their parent star, they could have water".
7. To search for planets, the telescope will look for the dimming of starlight caused when an object passes in front of a star, known as a "transit". Although it will take more sophisticated space telescopes planned in the next 10 years to confirm the presence of an Earth-like planet with oxygen and liquid water, Corot will let scientists know where to point their lenses.
8. Measurements of minute changes in brightness will enable scientists to detect giant Jupiter-like gas planets as well as small rocky ones. It is the rocky planets - that could be no bigger than about twice the size of the Earth - which will cause the most excitement. Scientists expect to find between 10 and 40 of these smaller planets.
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雅思考试备考课程 25年培训经验,桂林雅思培训,桂林出国语言培训,雅思辅导班、雅思备考,桂林环球雅思经典格言:人生就是:定性、知事、选梦、遇人、择城、终老。叠彩雅思6.5分寒假班,雅思.。
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