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【单选题】
在PowerPoint2003中，设置幻灯片背景的按（）工具栏上。A.
常用
B.
格式
C.
绘图
D.
表格和边框
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举一反三
【单选题】Why are just two black and white colors preferred to multiple colors in paintings?
A.
In ancient times, it used to be expensive to produce different colors and Chinese as pragmatical people liked frugality.
B.
Two colors - black and white - are related to Daoist ideals of simplicity and authenticity, they represent the reality as it is. Also, a line or a shape is valued more than color.
C.
Multiple colors represent chaos - the opposite of Dao, this why should be avoided.
D.
Not black and white, but black, red and white Chinese artists prefer in paintings.
【简答题】碱金属原子光谱的精细结构是由于电子的 和 相互作用,导致碱金属原子能级出现双层分裂( s 项除外)而引起的。
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