--the naw chemical factory will be of great?to the town.
问题描述：
--the naw chemical factory will be of great?to the town.
--I don't agree with you .It will make the quality of the air worse.
为什么只能是benefit不能输treasure
答
--the new chemical factory will be of great benefit to the town.
treasure 具有较永恒的珍产的意思.
benefit 是有利益的意思,较符合句意.