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[跟可可背精美短文] 跟可可背精美短文 第42篇:Plankton浮游生物
在线试听和英语短文Plankton Scattered through the seas of the world are billions of tons of small plants and animals called plankton. Most of these plants and animals are too small for the human eye2008-12-23 编辑:admin
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[跟可可背精美短文] 跟可可背精美短文 第41篇:Piano钢琴
在线试听和英语短文Piano The ancestry of the piano can be traced to the early keyboard instruments of the fifteenth and sixteenth centuries -- the spinet, the dulcimer, and the virginal. In the seven2008-12-21 编辑:admin
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[跟可可背精美短文] 跟可可背精美短文 第40篇:Oil Refining炼油
在线试听和英语短文Oil Refining An important new industry, oil refining, grew after the Civil War. Crude oil, or petroleum -- a dark, thick ooze from the earth -- had been known for hundreds of years2008-12-19 编辑:admin
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[跟可可背精美短文] 跟可可背精美短文 第39篇:Oil and Water油和水
在线试听和英语短文Oil and Water To understand the emulsifying process, we must first accept the scientific principle that oil and water do not naturally mix. Quite literally, they find each other's2008-12-18 编辑:admin
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[跟可可背精美短文] 跟可可背精美短文 第38篇:Obtaining Fresh
在线试听和英语短文Obtaining Fresh Water from Icebergs The concept of obtaining fresh water from icebergs that are towed to populated areas and arid regions of the world was once treated as a joke mo2008-12-17 编辑:admin
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[跟可可背精美短文] 跟可可背精美短文 第37篇:Nitinol 镍钛合金
在线试听和英语短文Nitinol Nitinol is one of the most extraordinary metals to be discovered this century: A simple alloy of nickel and titanium, nitinol has some perplexing properties. A metal with a2008-12-16 编辑:admin
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[跟可可背精美短文] 跟可可背精美短文 第36篇:Museums 博物馆
在线试听和英语短文Museums From Boston to Los Angeles, from New York City to Chicago to Dallas, museums are either planning, building, or wrapping up wholesale expansion programs. These programs alre2008-12-15 编辑:admin
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[跟可可背精美短文] 跟可可背精美短文 第35篇:Muscles and Huma
在线试听和英语短文Muscles and Human BodyItisinthejointsofthehumanbodythatmovementsofthe bones take place.The movementitself iscaused bythe pullofsheetsandcordsof very tough tissue calledmuscle. Musc2008-12-13 编辑:admin
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[跟可可背精美短文] 跟可可背精美短文 第34篇:Movie Music 电影插曲
在线试听和英语短文 Movie Music Accustomed though we are to speaking of the films made before 1927 as "silent", the film has never been, in the fullsenseofthe word,silent.From the very beginning,mu2008-12-12 编辑:admin