单元：List-13.txt

• period
• feed
• breath
• bent
• chance
• park
• project
• trick
• cry
• rent
• nationality
• begin
• symptom
• windy
• indeed
• have
• prove
• burst
• advance
• gym
• wise
• culture
• companion
• dare
• train
• relax
• honest
• stick
• consult
• disease
• direct
• tasty
• loose
• chemical
• widespread
• handwriting
• anything
• knowledge
• exhibition