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银行在办理委托收款划款时，发现付款人存款账户不足支付的，应立即向收款人发出未付款通知书。 ()

A. 正确
B. 错误

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听力原文：M: What would you do if you heard a strange noise in the middle of the night？
W: I'd lie awake a little while, waiting to see if it happened again. And if it did, I'd get up.
Q: How would you describe the woman？
(14)

A. Cowardly.
B. Anxious.
C. Lazy.
D. Courageous.

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听力原文：M: Did you make a reservation on the 9:00 flight？
W: I thought you wanted to take the 8:00 one. It's too late to change now.
Q: What happened to the woman？
(15)

A. She made a reservation for the 9:00 flight.
B. She changed the reservation.
C. She found they were late for the 8:00 flight.
D. She misunderstood the man.

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关于IL一2的生物学效应，错误的是

A. 以自分泌方式发挥作用
B. 促进T细胞增殖分化
C. 抑制Thl细胞分泌IFN-r
D. 增强NK细胞的杀伤活性
E. 促进B细胞增殖分化

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下列有关概率与频率，说法正确的是

A. 概率常用符号M表示
B. 频率常用符号P表示
C. 概率是描述某随机事件发生可能性大小的指标
D. 概率就是频率
E. 概率的取值范围介于一1和+1之间

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银行在办理委托收款划款时，发现付款人存款账户不足支付的，应立即向收款人发出未付款通知书。 ()

A. 正确 B. 错误

听力原文：M: What would you do if you heard a strange noise in the middle of the night？W: I'd lie awake a little while, waiting to see if it happened again. And if it did, I'd get up.Q: How would you describe the woman？(14)

听力原文：M: Did you make a reservation on the 9:00 flight？W: I thought you wanted to take the 8:00 one. It's too late to change now.Q: What happened to the woman？(15)

关于IL一2的生物学效应，错误的是

下列有关概率与频率，说法正确的是

A. 正确
B. 错误

听力原文：M: What would you do if you heard a strange noise in the middle of the night？
W: I'd lie awake a little while, waiting to see if it happened again. And if it did, I'd get up.
Q: How would you describe the woman？
(14)

听力原文：M: Did you make a reservation on the 9:00 flight？
W: I thought you wanted to take the 8:00 one. It's too late to change now.
Q: What happened to the woman？
(15)