题目

The cinema was crowded with many people, ____many children_______ on      their parents’ laps.       A. including? seated                              B. including? seating       C. include ?sat                                   D. included? sitting 答案：A金属材料在日常生活中应用非常广泛：(1)保温瓶胆壁上的金属是       ，常温下呈液态的金属单质______ ；(2) 在某些铁制品表面涂上一层铝粉可以有效防止锈蚀，由此可知“铝的化学性质比铁稳定”，这个结论是否正确？        ，原因是