精选优质文档-倾情为你奉上必修5Unit 1characteristic n. _radium n. _painter n. _put forward _scientific adj. _conclude vt. & vi. _conclusion n. _draw a conclusion _analyse vt. _infect vt. _infections adj. _cholera n. _defeat vt. n . _expert adj. n_attend vt. _physician n. _expose vt. _exp