题目

—________ the small town is!— Yes, it is more beautiful than ________ town that I visited last year.   A. How beautiful; the            B. How beautifully; the   C. How beautifully; a            D. How beautiful; a 答案：A新型净水剂高铁酸钾（K2FeO4）中，铁元素的化合价为（ ）A．+2价B．+3价C．+5价D．+6价