We didn't catch the train on ______ of the traffic congestion.
A. basis
B. charge
C. account
D. behalf
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算法具有5个特性，以下选项中不属于算法特性的是( )o
A. 有穷性
B. 简洁性
C. 可行性
D. 确定性
63（）
A. taste
B. drink
C. smell
D. feel
下列属于压缩气体的是（）。
A. NH3
B. O2
CO2
D. Cl2
I don't know his address, ______.
A. otherwise I will to him
B. otherwise I would write to him
C. otherwise I had written to him
D. otherwise I would have written to him
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