*A speech--a basically colloquial and familiar style.

e.g. Use direct speech to recreate the scene of his encounter with his tall student in his office.

*Not very complicated sentences

But there is a few long and involved sentences in the second part of the text.

e.g. Sentences in paragraph 12 and 14.

*Humorous and mildly sarcastic term.

e.g. a beanplole with hair on top, this specimen, This particular pest.