单项选择题

MD5算法输入消息长度可以是任意长。
A、正确
B、错误

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不定项选择

对酚酞不显颜色的溶液一定是酸性溶液。

A．错误
B．正确

单项选择题

What does Rochester lose in the fire at Thornfield?

A．His hand and his eyesight
B．His eyesight and his fortune
C．His eyesight and his dog
D．His fortune and his fiancée