classes:  lecturer. Presentation and instruction are still many problems, do not have their own communication style, so as not to create passion and excitement for students, it is necessary to overcome changes in communication and presentation.  curriculum. Presentation and instruction are still many problems, do not have their own communication style, so as not to create passion and excitement for students, it is necessary to overcome changes in communication and presentation.  facility. Presentation and instruction are still many problems, do not have their own communication style, so as not to create passion and excitement for students, it is necessary to overcome changes in communication and presentation.  general. Presentation and instruction are still many problems, do not have their own communication style, so as not to create passion and excitement for students, it is necessary to overcome changes in communication and presentation.