四、英文作文：（30 分） Write an English essay of about 300 words to address the following: Artificial intelligence (AI) is becoming increasingly common in education, and students now can use AI tools for many learning tasks that once required help from teachers. Do you think the growing use of AI will change the role of teachers in education? If so, in what ways might their role change? If not, why do you think their role will largely remain the same?