话题：师生两人对彼此的回顾（阅读）
词汇：重点词汇： suppose, become interested in, subject, boring, make everything interesting, practical examples, simplify, pour, powder, flame, set off, lack confidence, give a presentation, bad behaviour, spit, drag, decrease the size of classes, worthwhile
相关词汇： rocket, triangle, angle, atom, acid, onion, laboratory
语法：I wish构成的虚拟句式
