单项选择题
Which of the following is NOT correct about lexicon?
A.According to Levelt (1989), lexical learning is the driving force of L2 production.
B.Perceptive knowledge and productive knowledge are both aspects of lexical knowledge.
C.Although lexical errors are disruptive to communication, they are less common than other types of errors in L2 learning.
D.Lexicon plays an important role in language learning, teaching and assessment.