Among the following sounds ______is a voiceless alveolar fricative.A.[z]B.[s]C.[f]D.[v]

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Among the following sounds, ______is a voiceless alveolar fricative.

A.[z]

B.[s]

C.[f]

D.[v]

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。