She looks much ________ because she eats ________ than before.

A．healthier; more healthily

B．healthier; healthily

C．healthy; healthier

D．healthy; healthily

当全淹没干粉灭火系统保护可燃液（气）体时，启动干粉灭火系统之前可以不切断气体、液体的供应源。（）