The audio text should be natural speed, slow-motion to 75%. And it has to be Hejazi accent.
Grammar books and language classes don’t follow this principle, in part because it’s easy to plan lessons around themes like “family” and “fruit.” As a result, you’ll find niece and mother in the exact same place in your grammar book, regardless of their relative utility. In language classes, you’ll learn words for apricots and peaches when your time would be much better spent learning about laptops, medicine, and energy. These are the words of our lives. Why not learn them first? Enter the word frequency list. Researchers take a giant mass of text—millions of words from TV scripts, novels, newspapers, the Internet, news broadcasts, academic papers, and magazines—and jam it all into a computer. The computer counts the words and spits out gold: the words of a language in order of their importance.
