结合实际阐述现代教学媒体的选择与应用应遵循怎样的原则？
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麦芽的炮制方法是（）
A. 清炒
B. 麸炒
C. 土炒
D. 米炒
E. 烘焙
Because of（）,no separation is needed for the cargoes destined for New York.
A. their different packing
B. their same nature
C. their different destinations
D. their different nature
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