UNIT 1 TEXT Ⅰ "We've Been Hit!" TEXT Ⅱ Rethinking Skyscrapers UNIT 2 TEXT Ⅰ The Virtues of Growing Older TEXT Ⅱ Closing the Gap UNIT 3 TEXT Ⅰ My Stroke of Luck TEXT Ⅱ A New Attitude to Gratitude UNIT 4 TEXT Ⅰ Cultural Encounters TEXT Ⅱ DoesYour Body BetrayYou? UNIT 5 TEXT Ⅰ Fourteen Steps TEXT Ⅱ The Power of Belief