跨国经常性所得
参考答案：是指跨国纳税人在一定时期内，可以恒久或经常获得的所得，而不是临时性的所得。
—How about surfing the Internet this evening?
—______. but I'll be busy with tomorrow's exam. [ ]
A. That's right
B. I can't
C. It sounds great
D. No, I'm terribly sorry
试述投资的定义及其含义。
