1. | X 0 0 0 | X 0 0 0 | 2. | X XX X 0 | X XX X 0 | 3. | X X X X | X X X 0 | 1 2 3 4 5 6 7 i | i 1 i - | . . 1=C 4 4 X X X X | X X X 0 | X X X X | X X X 0 | X X X 0 | X X X 0 | X . X X X | X X X | 4 4 1=C 钹钹 小军鼓小军鼓 | X XX X 0 | X XX X 0 | 1=C 4 4 1=C | X 0 0 0 | X 0 0 0 | 大低音鼓大低音鼓 4 4 这节课我学到了什么?