卖the key和其他参考书

简约

Chemistry 30 the key (new curriculum) $10 全新
Biology 30 the key $5
% {5 m0 u5 f' s# f0 y5 p; |! t: h6 _Chemistry 30 Notes and Problems $15 (原价$30) 全新
+ D- K% J5 z2 v8 `5 |English 30-1 the key (new curriculum) $10 全新
Social 30-1 they key (new curriculum) $10 全新

另有国内高中理科课本和参考书不下20来本, 若以上全购, 酌情赠送. 如要买国内参考书可来参观挑选, 每本2元.