单项选择题

A．They make some signs.
B．They stay away from other birds.
C．They keep silent,
D．They hide themselves.
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单项选择题
A．6:15.B．6:40.C．5:35.D．5:15.
A．6:15.
B．6:40.
C．5:35.
D．5:15.
单项选择题
A．410 dollars a monthB．430 dollars a monthC．450 dollars a monthD．500 dollars a month
A．410 dollars a month
B．430 dollars a month
C．450 dollars a month
D．500 dollars a month
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