听力原文:M: How long can I keep the books?
W: For three weeks. You must renew the books if you want to keep them longer. Otherwise you'll be fined.
Q: Where does the conversation probably take place?
(9)
A.At a book store]
B.In a classroom.
C.In a library.
D.In a reading room.
第8题
以下选项中不合法的用户标识符是()。
A.abc.c
B.file
C.Main
D.PRINTF
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