(2) When the library buys a batch of new books, I think it should buy more books that students like to read, such as science and literature, and less books that students don't like to read, such as history books.

So the answer is: when purchasing a batch of new books in science and technology and history libraries, I think we should buy more books that students like to read, such as science and literature, and less books that students don't like to read, such as history.