这种信算什么意思？

大家来看看，这种信算什么意思？ 算系里给了ad吗？ 最后拿到offer有多大希望？ Congratulations for being selected for admission to our MSSc in Advertising programme in 2007/08! Our School will recommend you to the Graduate School of CUHK for admission. The Graduate School would scrutinize your qualification and, if they see fit, they will issue admission letter to you in mid-May. Please reply to them before the specified deadline.