Unit One Who Is More Sympathetic?
Unit Two Diamond
Unit Three Bill Gates
Unit Four Ford
Unit Five Global Warming
Unit Six Bear
Unit Seven Three Gorges Dam
Unit Eight Chengdu
Unit Nine Hurricane
Unit Ten Human Brains
Unit Eleven Traditional Fishing
Unit Twelve Titanic
Keys for Unit One
Keys for Unit Two
Keys for Unit Three
Keys for Unit Four
Keys for Unit Five
Keys for Unit Six
Keys for Unit Seven
Keys for Unit Eight
Keys for Unit Nine
Keys for Unit Ten
Keys for Unit Eleven
Keys for Unit Twelve
Cripts for TV Episodes
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