设一棵二叉树的中序遍历结果为DBEAFC，前序遍历结果为ABDECF，则后序遍历结果为______。
ACBEGFD
B. ABCDEFG
C. ACBEDFG
D. ABCEDFG
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A．She is a travel agent.B．She is a（real) estate agent.C．She sells cars.D．She sells hot
A. She is a travel agent.
B. She is a(real) estate agent.
C. She sells cars.
D. She sells hotels.
A．At all the entrances.B．At some entrances.C．At all the exists.D．At some exists.
At all the entrances.
B. At some entrances.
C. At all the exists.
D. At some exists.
A．The computer class will be held tomorrow morning.B．She will give the man the class s
A. The computer class will be held tomorrow morning.
B. She will give the man the class schedule in the afternoon.
C. She can't give the man the information he wants today.
D. She doesn't know how to get the class schedule.
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