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单项选择题 （        ）是技术美的基本条件，核心思想是用尽可能少的材料、能源、时间和人力的消耗来创造技术美 A. 审美 B. 经济原则 C. 操作 D. 效用

多项选择题 中班儿童打击乐活动《赛马》教学过程中,能力目标有( )。 A. 身体协调能力、 B. 创造力、 C. 想象力、 D. 认知能力。