A.E-FB.C-DC.D-ED.F-G
A.小字二組B.小字三組C.大字組D.大字二組
A.發(fā)音體振動(dòng)的頻率B.聲音是否容易被聽(tīng)到C.發(fā)音體振動(dòng)狀態(tài)的規(guī)則與不規(guī)則D.音的延續(xù)時(shí)間長(zhǎng)短