单项选择题

A．Someone spilled water on it.
B．Someone lost it.
C．It was made of low quality metal.
D．The standard for measuring had changed.
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单项选择题
According to the author, cats________.
A．are not domestic animals at all
B．are fiercer than dogs
C．are both meek and independent
D．can sometimes be very hostile to people
单项选择题
The transition from emergency relief to reconstruction has gone smoothly in all these tsunami-stricken areas.
A．Y
B．N
C．NG
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