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【单选题】
关于TCP和UDP端口,下列哪种说法是正确的A.
TCP和UDP分别拥有自己的端口号，它们互不干扰，可以共存于同一台主机
B.
TCP和UDP分别拥有自己的端口号，但它们不能共存于同一台主机
C.
TCP和 UDP的端口没有本质区别，但它们不能共存于同一台主机
D.
当一个TCP连接建立时，它们互不干扰，不能共存于同一台主机
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【单选题】听力原文：When is the band going to perform? (A) Last night. (B) The day after tomorrow. (C) Yes, they are banned from performing. (18)
A.
B.
【单选题】听力原文：W: When is the earliest flight from Washington to New York? M: There is a shuttle at six, and if that's full, there's another at seven. Q: What can be inferred from the conversation? (19)
A.
The woman has a choice of early flights.
B.
Not many planes go to Washington.
C.
The woman should take the earlier flight.
D.
The six o'clock flight is already filled.
【单选题】听力原文：When is the next train to Shanghai? (5)
A.
It's over there.
B.
It's 9:30.
C.
It's too late.
D.
It sounds good.
【单选题】听力原文：W: When is the library open on Saturdays? M: From 8 am to 6 pm. How long is the library open on Saturdays?
A.
8 hours.
B.
12 hours.
C.
10 hours.
D.
16 hours.
【简答题】让学生掌握的基本结构的教学原则包括________、结构原则、程序原则、强化原则。
【简答题】成卷的压花壁纸（宽60cm，以纸为底版，用塑料涂面，并经压花制得)
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