First of all, it doesn't hurt you at all. If you finish learning New Concept 2, your English is far from perfect. Generally, there is no average score, which depends on people. If you are not over 50, it is difficult for a good school to admit you! IELTS vocabulary is useless, and it is useless to surprise at this time. Its vocabulary is very biased and needs a long time to accumulate. Just be careful in the exam. Candidates of your age don't have listening and speaking skills, and the real question of AEAS will never be found unless you go to Shanghai for training! I wish you success in your exam!