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Around 800 A.D., people in Central Asia managed to develop a new kind of carrot—a purple carrot—that attracted more interest from international traders.
出自-2017年6月听力原文
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When the tea is boiled, the drink has a purple color.
出自-2016年12月听力原文
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Its leaves are purple and brown.
出自-2016年12月听力原文
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He says there are not enough buyers willing to pay more for the purple tea.
出自-2016年12月听力原文
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He says the market for the tea is unstable and he is often forced to sell his purple tea for the same price as green tea leaves.
出自-2016年12月听力原文
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But Mr.Kibara says he has not received a higher price for his purple tea crop.
出自-2016年12月听力原文