由于久期存在缺陷，对债券价格对利率的敏感性更准确地测量需要更高阶的价格一收益变动情况，最常用的方法就是凸性方法。()
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英美法认为，由于一方当事人的过失而造成的履约不可能均可作为合同落空处理。()
A. 正确
B. 错误
A．10B．40C．36D．72
A. 10
B. 40
C. 36
D. 72
听力原文：M: What do you think of this dresser？ Jack has agreed to let it go for $100.
W: Wow! It still costs an arm and a leg.
Q: What does the woman suggest？
(7)
A. She thinks he should bargain more.
B. She thinks the price is too high.
C. She thinks the dresser is too ugly.
D. She thinks the dresser is quite large,
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