P

is the one if science oriented.

otherwise Y.

no idea about  which one is good for food science though

所有跟帖： 

• P's grading system scared away some kids/parents -老冷- ♂ (702 bytes) () 03/31/2011 postreply 10:17:35

• 哇，这是在给P打负面广告啊！上，有能力，有信心就上！咱牛娃哪有被这吓跑的 -cowhorse- ♀ (0 bytes) () 03/31/2011 postreply 10:22:31

• 说的太吓人鸟 -心晴天好- ♀ (69 bytes) () 03/31/2011 postreply 10:30:06