THE Acting Assistant Director (Waste and Water) of the Environmental Protection Department, Dr Michael Chiu Tak-lun, urged school-leavers of Cheung Sha Wan Government Secondary School to scale greater heights through applying themselves to the best of their ability. Speaking at the school's speech day, Dr Chiu said since the pace of today's world was fast, many people wanted to get things done swiftly and a so-called ''fast-food'' culture had emerged. ''It's similar to ordering food from fast-food shops, we will sacrifice quality for speed, just as we may in our lives and value systems,'' he said. Dr Chiu went on to encourage students to try their best no matter what they did. ''Even if you cannot boast a good academic performance, you are still worthy,'' he said, quoting a Chinese saying: ''Heaven gave me talents which must have a use''. ''After you have finished climbing a mountain, you may think that you have tried your best, but look up and you will see another mountain top,'' Dr Chiu said. ''Life is like this. Therefore, when you have reached one mountain top, you must have the courage to climb another.'' While congratulating the graduates and prize winners, principal Chiu Ping-hoo also acknowledged the role of teachers and parents in these successes. ''I'd like all parents to know that their love and encouragement are absolutely essential to the children's healthy development and their achievement of academic excellence,'' he said. In his report, Mr Chiu said all Form Three students were promoted to Form Four. Also, of the 152 Form Five students who sat for the HKCEE, 82 per cent obtained Grade E or above in at least five subjects. They also scored a 100 per cent pass in seven subjects, including Additional Mathematics, Physics, Biology, Computer Studies, Chinese Literature, Government and Public Affairs and Religious Studies. The Form Seven students did equally well. All 30 students who sat for the A-level examination passed in Use of English and Chinese History, four obtained one distinction and one credit each, and 24 were offered places in local tertiary institutions.