东晋()北伐一直打到关中，在蓝田大败前秦军队，进军长安附近的灞上。
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在单译码结构中，地址输入线n=4，经地址译码器译码，可译出()个状态。
A. 4
B. 12
C. 16
D. 20
What's Mr. Hun doing？
A. He's speaking to someone else on the telephone.
B. He's answering someone's questions.
C. He's working in his lab.
What does the man mean？
A. He wants to know the woman's plan.
B. He has a meeting on Tuesday.
C. He wants to go to the cinema.
What day will it be tomorrow？
A. Friday, October the 13th.
B. Tuesday, November the 13th.
C. Friday, December the 6th.
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