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问题 选择题

—______ do know about Columbus?

—Oh, he is a great man who discovered America.       [ ]

A. What      

B. Who      

C. That    

D. Which

答案

A

多项选择题

下列可以作为市场细分的主要依据是( )。

A．政治因素

B．行为因素

C．心理因素

D．人口因素
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单项选择题

An analyst does research about yield spread. Which of the following embedded options in a bond is most likely t0 result in the highest yield spread over a comparable option-free Treasury security（）

A. Call option.

B. Floor on a floater.

C. Conversion option.
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