1. The foundation is weak, (Crazy English Middle School Edition is relatively simple, and you can't see your personal level. CET-4 or CET-6, you can watch English Salon (actual combat version, you can choose audio-visual version if you like audio-visual materials). If so, I don't recommend reading too much. It is enough to learn the textbook well.
2. If you have a strong foundation in English, you can watch American TV plays or movies with original sound, with original sound or without subtitles. It is very helpful for listening and speaking ability. I personally recommend reading National Geographic and Discovery. The main advantage is that they are more formal, without swearing, and help to enrich professional vocabulary, especially if you are a natural science major.
3. If you want to take the foreign language exam for studying abroad, you can look at the relevant exam materials.
4. If you want to take the postgraduate entrance examination, you can read English World and The Economist.
Individuals do not advocate blind extensive reading, which is not practical enough.