A、A person should know more technologies. B、A person should focus on something. C、A person should work in more than one branch.

W: I know you and Jane used to do eveiything together. I thought you really enjoyed each other’s company.
M: We did, but since she started her new job, all she does is hang out with her new friends from work.
Q: What does the man mean?

W: Have you noticed that in modern society, more and more new technologies are produced in frontier branches of science? It is an all-round person who can work in more than one branch.
M: Don’t forget if you are good at everything, you are good at nothing.
Q: What does the man imply?