Plastic
- 14. Reference
1. http://www.hxys.com/hangye/hanguozhengxingmingyizaijingduoweiyouyi.htm
2. https://www.flickr.com/photos/flocci/57674200/in/photolist-8ji1a9-8aMhC-66AwL-6TJu9t-
88KM5C-mBZovG-8SNxMK-73aUXm-6MrqSD-hSmRXv-6zvS9S
3. http://gz.ifeng.com/meirong/wuchuang/detail_2012_08/24/304172_0.shtml
4. https://www.flickr.com/photos/senscience/3966547431/sizes/l/in/photolist-7gfUS- 7gd3p-7gd3k-
7gd3j-7gdo3-7gdo2-7ge5b-7geG2-7ge57-7geFX-7geG4-7gdo6-cXe9zb-73vAmP/
5. http://en.wikipedia.org/wiki/Smile_surgery
6. http://commons.wikimedia.org/wiki/File:Sad_Woman.jpg
7. https://www.flickr.com/photos/charlesfred/601977622/in/photolist-9WjTyG-VchYw-dD97ya-
NmCr8-a1UPRS-a1RXB4-9LFMC-VaNnn-9iCvk4-5o9ep2-4HWQMf-rztTa-8jjHQ-6UP1aE-
37iFJd-54NqLj-UedH-5B4A4t-dHqUe6-8QUZBJ-bxJS3d-8QRUug-7oXSgH-LKLjs-3TzF9-
5m9HVk-5pj4nD-5meqQ7-csh72Q-4F7An-NmwwV-nDmTS-nDn7k-nDmT3-7pd2EK-7AHKH1-
LKV16-LKUti-LKRyP-4dSvsh-c5gd53-dThxuS-629MfR-dqDiQp-dqDs75-dqDsid-dqDift-ieRsSa-
ajZJPd-ajWXfa/lightbox/
8. http://www.taopic.com/tuku/201110/111626.html
9. http://pixabay.com/en/symbol-yellow-symbols-money-gold-39023/
10. http://img.4plebs.org/boards/pol/image/1393/61/1393617769857.jpg
11. https://www.flickr.com/photos/eekim/5117417303/sizes/l/in/photolist-4HzU3R-4vnTUG-8Nd6SP-
6t6L-9fBpKd-dQ3CLL-575yGt-5iRyG4-8cH2R-9W9LFU-hsF4i/