The feature that distinguishes "a blackbird" and "a black bird" isA.tone.B.aspiration.C.in

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The feature that distinguishes "a blackbird" and "a black bird" is

A.tone.

B.aspiration.

C.intonation.

D.stress.

请帮忙给出正确答案和分析,谢谢!

热搜:a是b的充分条件,b是a的必要条件吗