Mike is a middle school student. He goes to school from Monday to Friday. His home is about 5 miles from school. He usually walks to school. It takes him 30 minutes to walk there. Nancy's home is a little farther. It's 20 miles from school. So she often takes the school bus. It takes her 15 minutes to get to school. Bob lives outside the city. It's a town 30 miles away from his school. He takes the subway. It takes him 8 minutes to get to school by subway. He can have breakfast at home and then leave for the subway station. He studies very hard.

文化创作必须坚持“走下去、走进去、走出去”的道路，与之相对应的有效做法是（   ）

①深入基层、立足社会实践     ②加强交流、推动文化传播

③高举旗帜、引领先进方向     ④深入人心、反映群众呼声