Which is the correct description of the piano keyboard?
A、52whitekeys;
B、36blackkeys;
C、Thepianohas89keysintotal;
D、Thepianohas88keysintotal
发布时间:2025-12-18 02:20:05
A、52whitekeys;
B、36blackkeys;
C、Thepianohas89keysintotal;
D、Thepianohas88keysintotal