step by step 第四册 lesson 135

UNIT 68 POPULAR SCIENCE (Ⅰ) Lesson 135 Part Ⅰ Warming-up Exercises Note-taking: Inventions The words you may need for your note-taking in this drill: gasoline / barometer / Polaroid / pendulum / D

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China builds first tower-type solar-thermal power station BEIJING, Nov. 12 (Xinhua) -- The first tower-type solar-thermal power station in Asia has been built in northwest Beijing, chief of the program said on Monday. Wang Zhifeng, a researcher at th

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SSS 2011-11-16

Ever wander through a supermarket and past the open refrigerated cases that house cream cheese, butter and OJ? The refrigerated shelves are protected by jets of air that blow across the front. These jets form an air shield to keep the warm air out. T

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By Barry Wood San Francisco, CA 03 May 2007 Today we present the first of a new weekly series of reports called Searching for Solutions. The series explores how governments, communities and individuals are trying innovative approaches to address long

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You need an AUV, an autonomous underwater vehicle. 你需要个AUV，一个自行式水下航行器。 It needs to be one smart puppy, able to navigate and make decisions on its own in an alien ocean. 它必须很聪明，能够自己导航在陌生的

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模仿句子 'Let's take back control of our country.' That was a slogan of the campaign calling for Britain to leave the European Union, but who exactly is steering the UK economy and markets through the choppy waters of Brexit?

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鼠标悬停在加粗部分，会显示相应词义和讲解哦！ But on the edge of town, drills were driven out of his mind by something else. As he sat in the usual morning traffic jam, he couldn'

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This years Budget is a zero Budget. The Minister of Finance, Bill English, said there is no more money. To find money for new programmes, it has to come from present programmes. For example, to find money for more teacher training, it has to come fro

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Today a new geo-thermal power station was opened in Kawerau, in the eastern Bay of Plenty. Geo means earth and therm means heat. The power station uses hot steam from the earth. Like the geo-thermal power station at Wairakei, which opened in the 1950

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Standing by the port deadlight, I spotted magnificent coral substructures, zoophytes, algae, and crustaceans with enormous quivering claws that stretched forth from crevices in the rock. 我在左舷的船窗边，望见了珊瑚累积成的十分美丽

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By Anjana Pasricha New Delhi 13 May 2007 Villagers are dwarfed by giant windmills built by the Danish Development Agency in northern Philippines (File) The Asian Development Bank is helping to finance a 100-megawatt wind energy plant in India as part

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Wind It Up 歌手：Gwen Stefani 专辑：The Sweet Escape Gwen Stefani - Wind It Up High on a hill was a lonely goatherd, lay-od-lay-od-lay-he-hoo Yodell back with the girl and goatherd, lay-od-lay-od-low Wind it up Wind it up, uh, uh, uh, uh Yodell

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YELLOWSTONE NATIONAL PARK Wyo. (AP) A tourist from China was fined $1000 for walking off a boardwalk at Yellowstone National Park and collecting thermal water apparently for medicinal purposes park officials said Wednesday. 黄石国家公园官方本周

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Dai: So, you mentioned coasteering. What is that? Sharron: Right. What it is... it's organized by some groups of people. It can be quite dangerous, but it's very well-run in that you all go out in wetsuits, and you'll go out for a few hours around th

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It happens every summer: offices turn on the air-conditioning, and women freeze into popsicles. But until now, there was no data to understand why women felt cold and were slipping on cardigans while men just rolled up their sleeves at the same tempe

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Chinas top planning body has relaxed working day restrictions on its coal mines after reduced output boosted prices, frustrating central planners desire to control both price and supply of the nations most important energy source. 中国最高规划机

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CANBERRA, Oct. 14 (Xinhua) -- Australian scientists have made the alarming discovery that sea levels have risen more in the past century than at any other comparable period in the past 6,000 years. Researchers from the Australian National University

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有一种思念叫望穿秋水，有一种寒冷叫做忘穿秋裤。最近，全国各地的天气都变凉了，大家翻箱倒柜找出了尘封已久、又恨又爱的抗冻神物--秋裤。面对这种全世界恐怕只有中国人才穿的裤子，