He has finished _______ his homework. [ ]
A. do
B. doing
C. to do
D. does
答案：B
建立上述“青少年道德银行”有利于
A．满足个人利益及对社会的索取
B．建立道德评价机制
C．培养和提高公民集体主义道德观念
D．形成“人人为我”的氛围
紫气东来城关题额是由哪位皇帝题写的？
