前辅文
UNIT ? Why Do We Go to School?
UNIT ? Invest Your Passions
UNIT ? Cloned Meat OK
UNIT ? Dead Poets Society
UNIT ? Life After People
UNIT ? Influential Business People
UNIT ? Let’s Work Together
UNIT ? Enjoy Our Full Vacations
UNIT ? This Is Us
UNIT ? Code Breaker
UNIT ? Make Small Changes
UNIT ? Deal with Stress
UNIT ? Animal Migration
UNIT ? How to Wake Up Early
UNIT ? Don’t Compare Yourself to Others
UNIT ? An Inconvenient Truth
UNIT ? Autism
UNIT ? I Believe
UNIT ? The Dangers of Having Too Little to Do
UNIT ? The Biggest Mistake We Make in Life
TRANSCRIPTS & ANSWERS
