【正确答案】正确答案：A slip of the tongue is a kind of speech errors, which is conscious or unconscious deviations from the apparently intended form of an utterance. In the process of speech sound production, a slip of sound is easily occurred. In the perspective of speech sound production, it refers to some phonological process. (1) Addition: something is added to the target utterance, e. g. "I didn't explain it carefully enough" for "I didn't explain it carefully enough". (2) Anticipation; in anticipation of a forthcoming segment, we replace an earlier segment with the later segment, e. g. "bake my bike" for "take my bike". (3) Perseverance; an earlier segment replaces a later one (while also being articulated in its correct location) , e. g. " ...he pulled a pantrum. " for " ...he pulled a tantrum". (4) Blends: occur when more than one word is being considered, and the two blend into a single item, e. g. "Don't bother me in the sleast." for "Don' t bother me in the slightest. (5)Deletion; something is omitted, e. g. "...mutter intelligibly. " for "... mutter unintelligibly.