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问题 选择题

若（x+k）（x-5）的积中不含有x的一次项，则k的值是[ ]

A.0

B.5

C.-5

D.-5或5

答案

答案：B

补全对话，情景问答
给下列的问句选择合适的答语。
( ) 1. Is his home far from here?
( ) 2. Thank you.
( ) 3. Where is your school?
( ) 4. How do you get there?
( ) 5. Where are you going?		A. You're welcome!
B. I'm going to the bank.
C. It's next to the science museum.
D. Yes, it is.
E. I get there by plane.
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单项选择题

根据《跟单信用证统一惯例》(《UCP500》)，处于第一付款人地位的是( )。

A．进口方

B．开证行

C．通知行

D．议付行
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