豬流感食d咩可以預防??????????
By nancy yu (pupil) on 2010-01-07 Answers 1 Views 116
By jenny shum (middle-school student) on 2010-01-18
需要進食多d蔬果類或含高抗氧化成份的食品, 因為抗氧化是可以加強免疫力的