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【单选题】
丁丁今年12岁，他所在的初中最近流行PS3游戏机，受同学的影响，丁丁也想购买一个。于是丁丁用过年的压岁钱自己购买了一台。则下列说法中正确的是( )。A.
本合同无效，因为丁丁无民事行为能力
B.
本合同无效，因为丁丁是背着父母购买的
C.
本合同有效，因为丁丁12岁了
D.
本合同效力未定，需要追认
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反馈参考答案：
举一反三
【简答题】在解决问题过程中,专家与新手的差异在于哪些方面?
【单选题】在假设检验中，记H0为原假设，H1为备择假设，则第一类错误是指( )
A.
H1为真，接受H1
B.
H1不真，接受H1
C.
H1为真，接受H0
D.
H1不真，接受H0
【单选题】Which commercial usage of the Internet does the author NOT refer to?
A.
Buying airline tickets.
B.
Trading stocks.
C.
Applying for a credit card.
D.
Opening a bank account.
【单选题】Which commercial usage of the Internet does the author NOT refer to?
A.
Buying airline tickets.
B.
Trading stocks.
C.
Paying bills.
D.
Opening a bank account.
【单选题】What will Ms. Bush probably buy?
A.
An excursion fare.
B.
A full return ticket
C.
A single ticket.
D.
Two tickets.
【单选题】Which of the following can be inferred from the talk?
A.
Mr. Cotton should come to the ticket office as soon as possible.
B.
Mr. Cotton gets the ticket at once.
C.
Mr. Cotton will get the ticket in the local post office.
D.
Mr. Cotton needs to go to the ticket office to get the ticket.
【单选题】听力原文：W: I thought you were going to drive carefully so you wouldnt get a traffic ticket. M: I was, but it didnt work out that way. Q: What happened to the man on that day?1．
A.
They had a misunderstanding four years ago.
B.
They really like each other very much.
C.
They've been angry with each other for a long time.
D.
They've never learned how to express their feelings.
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