Ⅰ.单词预习 1． vt.促进，提升→ n．促进，提升 2． vt.犯(错误)，干(坏事)→ n．承诺，承担的义务 3． adj.自信的→ adv.自信地→__________ n．自信 4． v．反应→ n．反应 5． n．勇气→ v．鼓励

promote

promotion

commit

commitment

confident

confidently

confidence

react

reaction

courage

encourage