A、By the last name. B、By the first name. C、By the middle name. D、By the full name. B题目询问美国人在公司如何相互称呼。女士问美国人之间怎么问候(greet)对方，男士说：“

W: What do you like about working in the US?
M: Well, people are very friendly. We all get on very well.
W: How do people greet each other?
M: Everyone uses first names. They all say "Hi" and ask "How are you doing". I like that.
W: What else do you like?
M: They have very nice offices, lots of space. Everything is very modem and new.
W: Is it different from working in our country?
M: Yes. Americans always wear formal clothes but we go to work in informal clothes.
W: Is there anything you don’t like?
M: The holidays. In the US they only have two weeks annual leave. In our country, we usually have four or five weeks.
9. How do Americans usually call each other in a company?
10. What does the man dislike about working in the US?