Which of the following is NOT correct? （ ）
A.A word is a meaningful group of letters. B.A word is a unit of meaning. C.A word is a sound or combination of sounds. D.A word is a form that cannot function alone in a sentence.正确答案D
Which of the following is NOT correct? （ ）
A.A word is a meaningful group of letters. B.A word is a unit of meaning. C.A word is a sound or combination of sounds. D.A word is a form that cannot function alone in a sentence.正确答案D
