The objectives of the Study The Scope of the Study

2. For the textbook author, although most of reading texts in the textbook are classified into medium level of difficulties, they also should design the appropriate texts in English teaching or English curriculum design for vocational school level with the suitable needs. It is suggested to design the next textbook by considering low level of clause complex and medium lexical density because it is in written text, it means to the vocabularies of words which have to be adjusted with their levels, so they can enhance the vocabularies based on their needs, not only the generic structure. 3. Anyone interested in understanding of reading text should be familiar with Grammatical Intricacy and Lexical Density LD. It is very clear who is difficult in processing the text must be caused of GI and LD in the text which is reading. 4. 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