treat的同義詞是什么

　　例句：

　　1. New ways to treat arthritis may provide an alternative to painkillers.

　　關節炎的新療法可能是止痛藥之外的另一種選擇。

　　2. They shouldn't treat their mother in this disrespectful way.

　　他們不能這樣無禮地對待親生母親。

　　3. Her cousin, a hairdresser, was perming her hair as a special treat.

　　她表兄是美發師，正在免費給她燙發。

　　4. No one knew how to treat this dreaded disease.

　　沒人知道如何治療這種可怕的疾病。