Peter usually gets up early ____ the morning.
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He put up a map on the back wall because there was a hole ___ it.
All the cups are made of glass ____ the green one. It’s madeof metal.
---______ the heavy rain, we didn’t go camping last Sunday.---What a pity!
云计算具有的特点不包括（）
A. 虚拟化
B. 高可靠性
C. 高可扩展性
D. 高成本
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