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【简答题】
Java语言中___是所有类的父类。
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【单选题】听力原文：W: I wonder what I should say to my boyfriend when he comes late. M: Well, I guess. It just depends on what kind of relationship you have. The relationship between the two speakers is probably
A.
intimate friends.
B.
man and wife.
C.
psychoanalyst and patient.
D.
instructor and student.
【单选题】听力原文：M: I've just decide to order some books from this catalog. I wonder how I should pay for them. W: You can save two dollars by paying in cash or by check instead of using a credit card. How does t...
A.
Not by check.
B.
By credit card.
C.
Immediately.
D.
In cash.
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