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Wild carrots probably evolved with the other flowering plants about 360 million years ago.
出自-2017年6月听力原文
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Machines do most of the planting and picking, and carrots are easy to store and ship.
出自-2017年6月听力原文
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Three university students in Santiago, Chile, have developed a plant-powered device to charge their mobile phones.
出自-2016年12月听力原文
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Mr.Kibara and hundreds of other farmers have been removing some of their tea bushes and planting a new kind of tea developed by the Tea Research Foundation of Kenya.
出自-2016年12月听力原文
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All appears to be well, but the farmers who planted the bushes are worried.
出自-2016年12月听力原文
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There have been half-hearted but well-publicized efforts by some food companies to reduce calories in their processed foods, but the Standard American Diet is still the polar opposite of the healthy, mostly plant-based diet that just about every expert says we should be eating.
出自-2015年12月阅读原文
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That lets us avoid building costly plants or buying expensive power at peak usage time.
出自-2013年6月阅读原文
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But when a grassy area was planted with bushes, the children got much more into fantasy play, and the social hierarchy was now based on imagination and creativity.
出自-2010年12月阅读原文
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Donna helped the people of the village to organize an irrigation project, and she also advised them on planting corps that didn't require much water.
出自-2013年12月听力原文
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The 4-H girls planted trees and took care of them during the early stages of growth.
出自-2013年6月听力原文
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Trees and flowers have all been planted in the shopping center, making the atmosphere pleasant
出自-2013年6月听力原文
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They beautified it with plants.
出自-2013年6月听力原文
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City officials cooperated with the 4-H members in planting trees, building cooking facilities, pick-me tables, swings and public rest rooms.
出自-2013年6月听力原文
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A plant uses only a small part of the energy produced by that process.
2016年12月四级真题(第二套)听力
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One of the student inventors, Camellia Rupcich, says the device changes the energy released from the plant into low-level power to charge phones.
2016年12月四级真题(第二套)听力
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More than a century has passed since explorers raced to plant their flags at the bottom of the world, and for decades to come this continent is supposed to be protected as a scientific preserve, shielded from intrusions like military activities and mining.
出自-2016年12月阅读原文
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Whether it is a transition from imported to domestic oil or from coal-powered electricity production to natural-gas power plants, politicians love to talk big.
出自-2015年12月阅读原文
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When investors put up money to build, say, a nuclear power plant, they expect to earn that money back over the planned life of the plant, which is typically between 40 and 60 years.
出自-2015年12月阅读原文
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Some coal power plants in the United States have operated for more than 70 years! The oldest continuously operated commercial hydro-electric plant in the United States is on New York's Hudson River, and it went into commercial service in 1898.
出自-2015年12月阅读原文
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Bowman cannot plant the seeds without Monsanto's consent.
出自-2013年12月阅读原文
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This varies dramatically depending on crop, from three calories for plant crops to 35 calories in the production of beef
出自-2013年12月阅读原文
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He planted soybeans (大豆)sold as cattle feed.
出自-2013年12月阅读原文
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He planted soybeans without paying for the patent
出自-2013年12月阅读原文
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Have we really gotten to the point that planting a seed can lead to a high-stakes Supreme Court patent lawsuit?
出自-2013年12月阅读原文
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Mass layoffs and plant closings have drawn plenty of headlines and public debate over the years, and they still occasionally do.
出自-2013年6月阅读原文
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In a late 1990s study of blue-collar employees at a General Motors plant (now closed) in Linden, N. J., the sociologist Ruth Milkman of City University of New York found that many line workers, in their off-hours, did home renovation and other skilled work.
出自-2013年6月阅读原文
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In addition, at that time a greater percentage of homes and electrical plants were run on petroleum than today.
出自-2013年6月阅读原文
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billion coal-burning energy plant.
出自-2012年6月阅读原文
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Dakota Gasification of North Dakota captures CO2 at a plant that converts coal into synthetic natural gas
出自-2012年6月阅读原文
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The plant's carbon-capture technologies would serve as a pilot project for other new coal-burning plants.
出自-2012年6月阅读原文
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David Card, an economist at UC Berkeley, notes that the ones who profit most directly from immigrants' low-cost labor are businesses and employers – meatpacking plants in Nebraska, for instance, or agricultural businesses in California.
出自-2011年6月阅读原文
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The traits that characterise him are very contradictory to the racial stereotypes that black people are aggressive and uneducated," says Ashby Plant of Florida State University.
出自-2010年6月阅读原文
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Sting in the tail Ashby Plant is one of a number of psychologists who seized on Obama's candidacy to test hypotheses about the power of role models
出自-2010年6月阅读原文
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That's an unusually large drop," Plant says.
出自-2010年6月阅读原文
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This suggests that Obama was strongly on their mind, says Plant
出自-2010年6月阅读原文
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Over time he might become his own entity," says Plant.
出自-2010年6月阅读原文
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All of them are manufactured in his own plant.
出自-2011年12月听力原文
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They found fossils of microscopic marine plants which suggest that the region was once open ocean not solid ice.
出自-2010年12月听力原文
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Also last year, Farrant and colleagues published a detailed molecular study of another candidate, Xerophyta viscosa, a tough-as-nail South African plant with lily-like flowers, and she says that a genome is on the way.
2018年6月六级真题(第一套)阅读 Section B
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As the plant dries, these resources take on first the properties of honey, then rubber, and finally enter a glass-like state that is the most stable state that the plant can maintain, Farrant says.
2018年6月六级真题(第一套)阅读 Section B
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Farrant and others in the resurrection business got together last year to discuss the best species of resurrection plant to use as a lab model.
2018年6月六级真题(第一套)阅读 Section B
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In 2018, farmers will plant the varieties with the most promise in the Ebro Delta and Europe's other two main rice-growing regions—along the Po in Italy, and France's Rhone.
2018年6月六级真题(第二套)阅读 Section C
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More than a century has passed since explorers raced to plant their flags at the bottom of the world, and for decades to come this continent is supposed to be protected as a scientific preserve, shielded from intrusions like military activities and mining
2016年12月六级真题(第三套)阅读 Section B
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The oldest continuously operated commercial hydro-electric plant in the United States is on New York's Hudson river, and it went into commercial service in 1898.
2015年12月六级真题(第一套)阅读 Section B