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发表于:2018-12-02 / 阅读(172) / 评论(0)

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发表于:2018-12-10 / 阅读(357) / 评论(0)

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[00:10.79]There is a zoo in our city. [00:38.24]My parents often take me there on holidays. [00:44.41]I like animals. I have a lot of toy animals in my room. [01:36.26]In the zoo I can see tigers, [01:40.99]elephants, monkeys, pandas, bears, snakes a

发表于:2018-12-10 / 阅读(150) / 评论(0)

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发表于:2018-12-13 / 阅读(221) / 评论(0)

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发表于:2018-12-13 / 阅读(178) / 评论(0)

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Lesson 23: Famous Zoos [00:05.49]Zoos are old! [00:09.25]One of the world's first zoos was in Egypt,about 3,500 years ago. [00:18.81]This zoo kept monkeys and giraffes in small cages. [00:25.94]Only kings,queens and important people went to this zoo.

发表于:2018-12-13 / 阅读(206) / 评论(0)

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发表于:2018-12-18 / 阅读(106) / 评论(0)

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发表于:2018-12-18 / 阅读(109) / 评论(0)

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发表于:2018-12-31 / 阅读(113) / 评论(0)

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发表于:2019-01-09 / 阅读(194) / 评论(0)

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发表于:2019-01-10 / 阅读(137) / 评论(0)

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发表于:2019-01-13 / 阅读(105) / 评论(0)

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Panel Urges Study of Nanomaterial Risks The nano market is booming. In 2009 developers generated $1 billion from the sale of nanomaterials. The global market for products that rely on these materials is expected to grow to $3 trillion by 2015. Yet wi

发表于:2019-01-14 / 阅读(133) / 评论(0)

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STEVE INSKEEP, HOST: One year from now, South Korea will host the Winter Olympic and Paralympic Games. One Olympic tradition is to select mascots. The Koreans chose two animals native to the country, a white tiger and a black bear. But as NPR's Elise

发表于:2019-01-16 / 阅读(119) / 评论(0)

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发表于:2019-01-24 / 阅读(97) / 评论(0)

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发表于:2019-02-02 / 阅读(115) / 评论(0)

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发表于:2019-02-03 / 阅读(150) / 评论(0)

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发表于:2019-02-07 / 阅读(114) / 评论(0)

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发表于:2019-02-13 / 阅读(88) / 评论(0)

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发表于:2019-03-15 / 阅读(377) / 评论(0)

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