AWA 32题目谁知道

“A recent review of the West Cambria volunteer ambulance servicerevealed a longer average response time to accidents than was reported by acommercial ambulance squad located in East Cambria. In order to provide betterpatient care for accident victims and to raise revenue for our town bycollecting service fees for ambulance use, we should disband our volunteerservice and hire a commercial ambulance service.”

一份西Cambria报纸的社论片断：
最近的对西Cambria的志愿救护服务的回顾显示出其对事故的平均应对时间比设在东Cambria的一个商业救护班要长。为了给事故受害者提供更好的医护服务并通过收取急救服务费来提高我们镇的税收，我们应当解散志愿救护并雇佣商业救护服务。

上面是80题里面的三个论点

想请问大家的是  第三个论点说“改成商业是不见得就可以给该镇增加很多税收的”