The middle C lies in?
A、The lower 1st ledger line under the treble;
B、The 1st ledger line under the bass;
C、The upper 1st ledger line of the bass;
D、2nd line
发布时间：2025-03-04 05:55:53
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答案：The lower 1st ledger line under the treble;
The upper 1st ledger line of the bass
