My headache must have been caused by my bad ________. I often stayup too late.
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Is AIDS still regarded as a ____________ disease?
I finished all the difficult reading in 5 hours and felt quite ______
He blamed me so ____________ that I felt hurt and angry.
线性表是n个具有相同特性的（）构成的有限序列（n≥0）。
A. 数据对象
B. 字符
C. 数据元素
D. 数据项
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