24. plastic 塑料, 塑料的 a plastic substance 可塑材料　 plastics　 塑料制品(复) 塑料学(单)

23. put forward a plan 提出计划 draw up a plan 制定 carry out plan 实施 according to plan 　

22. plain　 平原, 简单的, ,平易的　 This is plain to everyone.这对每个人来说都很明白。　

　 be in plain clothes 穿着朴素　　 plain living　 简朴的生活

21. get the first place 得第一名take one's place/seat 就座　 take the place of = in place of 取代

take place = occur = happen　　 Great changes have taken place in Shanghai.

　　 place emphasis on 对…加以强调　　 place an order for　 订购了…　　　

20. pity　 遗憾　　　　 have pity on　 对…表同情　　 do sth out of pity 出于同情去做…　　

　　 It is a pity that ...　　　 What a pity !

19. take a picture of = take a photo of　　　 get a clear picture of 对…有较清楚了解

18. physical environment 自然环境　 physical change 物理变化

17. persuade sb to do sth　　　 persuade sb into doing　 说服了

16. in person 亲自；当面

personal 个人的 personal opinion , personal experience, personal rights 人权

15. persevere in doing　 坚持(强调做好的事) persist in doing 坚持(固执做…)