unit 1 education part one speaking part two listening part three video clip overstressed students unit 2 environment part one speaking part two listening part three video clip―water contamination unit 3 inter part one speaking part two listening part three video clip―watch tv on the intemet unit 4 advertising part one speaking part two listening part three video clip―apprentice unit 5 ychology part one speaking part two listening part three video c1ip―the copycat of the serial rapist unit 6 culture part one speaking part two listening part three video clitarbucks in china’s forbidden city unit 7 technology part one speaking part two listening par[three video clip can robot rost sagging rirth rata? unit 8 medicine part one speakirig part two eigtening part three video clipalternative cure vocabulary
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