1. 首先获得职业评估后,才能申请EOI筛选号的,和申请485TR无直接关系(因为职业评估递交后,拿到了ref number档案号后,就可以递交485TR申请了)
2. 485签证获得后是必须要买健康保险的,这是移民局的要求: http://www.immi.gov.au/visas/students/485/applicants.htm
Health insurance
You must have adequate health insurance in Australia unless you are covered by Medicare. You should ensure your insurance will provide at least the level of coverage required for the purpose of your stay. Your health insurer may be in either Australia or overseas.
Your health insurance must commence before you make your visa application. If you have travel insurance, the insurance must at least cover your arrival in Australia.
3. 如果你现在不能尽快递交PR申请的话,建议你买了保险,否则may result in the cancellation of your 485 TR visa