On the 1th to 5th chapter of the Modern software Engineering-construction law

The first chapter of the question: in my understanding of the first chapter, I focus on the software development process of the problem, for these 5 difficult to solve, I am still a little confused, I think with the development of software tools will alleviate these difficulties, but the tools are not more demanding, for a team close not need more stringent?

Chapter Two: In the unit test and regression test, we change the unit test how to describe the specific, and if by a single person operation, that in the temp cooperation how to Division of labor.

Chapter III: In this chapter, I think of an outsider question, occupation and document, whether because of occupation and take document measures, or a person ability according to document performance?

The fourth chapter: in 2 people cooperation, debugging work should be divided, the final debugging as the most important, should be the ability of high, or should be handled by the operator? Will it be easy to cause confusion?

The fifth chapter: Talk about the team's mode, because of the individual and select the mode, but in the team, the mode is switch use, or single mode use, then how to change.

On the 1th to 5th chapter of the Modern software Engineering-construction law