What would you do _ your father wouldn't help you? [ ]
A. why
B. because
C. if
答案:C
逻辑框架法在项目研究中分为( )。
A.采集阶段
B.解读阶段
C.分析阶段
D.计划阶段
E.结论阶段
简述艺术鉴赏中的审美升华。