简答题\n L2 learners can speak freely with a vocabulary of 2,000 English words.\n\n简答题\n Explicit vocabulary learning is more effective than implicit learning.\n\n简答题\n The acquisition of a new word consists of receptive and productive knowledge.\n\n简答题\n Learning a second language is to master 95% of its vocabulary.\n\n简答题\n Traditional vocabulary learning strategies are out of date now.\n\n