Write a composition on the following topic which starts with a statement followed by denial and correction. The topic has been given a detailed outline that you can follow. (See Page 219 of the textbook)
Statement:
Books are the main sources of human knowledge.
Denial and correction:
a recording of the past
not cover all the things for the future
many mysteries unsolved
hard for people to cope with practical problems
develop our ability through practice and observation
not rely on books only