PapaCambridge 上面有全科每届的pastpaper和markscheme。网址：https://papacambridge.com/home/index.html ...
Chemistry AQA and OCR (A) - 22-23rd December. Check them out now!These are video solutions for Paper 2 OCR (A) Chemistry A-level, June 2019 series. You can find the pdf of the model solutions, as well as the question paper and the mark scheme on our OCR (A) Chemistry A-level ...
Physics and math tutor上有，自己去下载