单项选择题

A．They use many different methods.
B．All birds follow major geographical features.
C．All birds use their memory of a map.
D．We have no information about this.
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单项选择题
A．They don’t get rid of flabby arms.B．They can damage arm muscles.C．They aren’t acceptable to most people.D．They can raise one’s blood pressure.
A．They don’t get rid of flabby arms.
B．They can damage arm muscles.
C．They aren’t acceptable to most people.
D．They can raise one’s blood pressure.
单项选择题
A．Before the man bought a new house.B．After the man and the woman talked about the purchase for the first time.C．After the man bought a new house.D．After the man has given up looking for a new house.
A．Before the man bought a new house.
B．After the man and the woman talked about the purchase for the first time.
C．After the man bought a new house.
D．After the man has given up looking for a new house.
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