贸易汇率
参考答案：
又称“商业汇率”，主要用于出口贸易的货价及其从属费用的收汇兑换
---Is everyone here today?
----____________
A．No, Jack isn’t here.
B．Yes, please.
C．Yes, it is.
D．Let’s go.
I suggest you choose _____ you think is kind and friendly.
A．whom
B．who
C．whoever
D．whomever
