It is _____ to spend money on preventing illnesses by promoting healthy living rather than spending on

trying to make people _____ after they are ill. [ ]

A. good … good

B. well … better

C. better … better

D. better … good

信号及通信设备，应装有防止强电及雷电危害的保安设备，电子设备应符合电磁兼容有关规定。