Dime un buen acertijo por favor

Read the excerpt from "amigo brothers.” felix and antonio turned and faced each other squarely in a fighting pose. felix wasted no time. he came in fast, head low, half hunched toward his right shoulder, and lashed out with a straight left. he missed a right cross as antonio slipped the punch and crossed and countered with one-two-three lefts that snapped felix’s head back, sending a mild shock coursing through him. if felix had any small doubt about their friendship affecting their fight, it was being neatly dispelled.

Which of the following is not a required characteristic of a well-written melody? variation in pitch shape lyrics phrase

Какие народы относятся к числу коренных обитателей кубанских земель? носителями каких языков они являются?