Title: אופציונלי

Text: One of the puzzles Meyer most loved was figuring out why, during some songs, listeners never seemed to change the radio dial. Among DJs, these songs are knows as "sticky." Meyer had tracked hundreds of sticky songs over the years, trying to divine the principles that made them popular. כל פסקה תהיה מבחן.

Save test: השתמש בזה אם אתה רוצה לשתף את המבחן הזה בהקלדה (רק למשתמשים מאומתים).