Unit 2 A Path to FollowA FAMOUS QUOTEWhen one door of happiness closes, another opens. Helen Adams Keller 一扇幸福之门关闭时，另一扇便会开启。 海伦亚当斯凯勒 Helen Adams Keller （1880-1968）, US author, political activist and educator. Though blind and deaf from an early age, she learned to read, write, and communicate with sign language, and travelled the world over, crusading for improvement in the education and life of the physically disabled.海
