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Digital textbooks are transforming the way...
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英语听力
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01:11 |
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The Federal Aviation Administration...
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英语听力
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00:58 |
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In Dakar, psychiatric patients...
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英语听力
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01:06 |
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Conversation One
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英语听力
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02:49 |
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Conversation Two
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英语听力
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04:41 |
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Less than 20 miles from Singapore's skyscrapers...
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英语听力
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01:35 |
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Once upon a time, societies were organized...
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英语听力
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01:39 |
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Speech during Freshmen's Week
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英语听力
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03:22 |
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The family of Sarai Sierra...
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英语听力
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00:58 |
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The bloodshed at In Amenas...
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英语听力
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00:52 |
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French forces say...
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英语听力
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01:05 |
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Male and Female Roles in Marriage
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英语听力
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00:39 |
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People worldwide celebrate New Year in different ways...
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英语听力
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01:25 |
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Limiting the Growth of Technology
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英语听力
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01:11 |
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It's a mixed picture over the next few days...
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英语听力
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01:16 |
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Think Positive and Feel Positive
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英语听力
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00:48 |
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In the foreground...
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英语听力
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01:28 |
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Ben became interested in Mongolia...
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英语听力
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01:50 |
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Conversation Two
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英语听力
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01:45 |
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In a suburb in northern Johannesburg South Africa...
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英语听力
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01:23 |
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Online Education (口白)
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英语听力
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04:28 |
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第26期人生感悟(6)
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英语听力
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03:16 |
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第23期人生感悟(3)
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英语听力
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02:01 |
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第21期人生感悟(1)
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英语听力
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02:53 |
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第13期青春励志(13)
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英语听力
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02:07 |
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第7期青春励志(7)
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英语听力
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03:04 |
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第6期青春励志(6)
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英语听力
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04:10 |
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第5期青春励志(5)
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英语听力
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03:22 |
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第4期青春励志(4)
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英语听力
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02:15 |
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第3期青春励志(3)
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英语听力
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03:30 |