阿摩線上測驗
16/s/ is voiceless, alveolar, fricative. /f/ can be described as:
(A) voiceless, labiodental, sibilant
(B) voiced, velar, nasal
(C) voiced, alveolar, stop
(D) voiceless, labiodental, fricative
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統計： A(69), B(20), C(19), D(410), E(0) #1308168
統計： A(69), B(20), C(19), D(410), E(0) #1308168
