______是一种使持有者在到期日收到的金额，随某一外汇汇率变化而变化的债券。
参考答案：指数化货币期权票据
Much to our _________, Sam wasn’t _________ at the _________ news.
A．surprise; surprised; surprise
B．surprise; surprised; surprising
C．surprised; surprising; surprised
D．surprising; surprised; surprise
Could you tell us _____ happens when one student in class expresses a personal opinion ______
maybe upsets other students?[ ]
A. that; that
B. what; where
C. that; where
D. what; that
