What is the problem in this article supplements the information in writing, I don't know, for example, the acronym "sap ทืที่สำคัญ and find the words in the sentence to indicate certain backpack?
What are the problems in studying this chapter. To know the information in writing, abbreviations Glossary science major. And finding words that bordered indication in the sentence.
What are the problems in learning this chapter is Not knowing the information in writing, such as abbreviations words on the phone and find the key words a performance indicator told in a sentence.