he first address the audience as friends
D) is definitely an academic skills.
A) - I would say as well, especially academic writing.
About B and C- I would say it depends - reading what? novels? organizing what? your paper? out of the two I would say that C) organizing is the better choice but it is also useful in science.
I would go with the first one makes,more,sence
Li soon discovered, however, that Student Huang's visit<span> was no </span>coincidence; it was in fact gift of money from Prefect<span> Lin Yuncheng of Runing, a town near Macheng.</span>
Her donating books to the library was very much appreciated
