inquiring       
adjective (UK also enquiring) uk/ɪnˈkwaɪə.rɪŋ/ us/ɪnˈkwaɪr.ɪŋ/
 (人的行为)探究求索的,追根问底的;(人的神色)好奇的,探询的
(of someone's behaviour) always wanting to learn new things, or (of someone's expression) wanting to know something
  You have a very inquiring mind, don't you? 你喜欢刨根问底,对吧? 
 He gave her an inquiring look. 他审视了她一下。