中四化學

[img]http://2uploadhk.com/upload/imgfiles/1227866040.jpg[/img]
[img]http://2uploadhk.com/upload/imgfiles/1227866094.jpg[/img]
[img]http://2uploadhk.com/upload/imgfiles/1227866139.jpg[/img]
[img]http://2uploadhk.com/upload/imgfiles/1227866188.jpg[/img]

樓主，全是死圖
要我地點教你？

唔洗啦,我識做了........