: This site offers a vast library of junior high and high school mock papers that are often available for free download.

: If you are looking for a specific city's "一模" (first mock exam) from December 2021, search for "2021年12月 [City Name] 一模 试卷 zip" .

: Specifically for mathematics, this site hosts historical mock exams dating back to 2003, organized by year and region. How to Find Your Specific ZIP File

: A comprehensive resource for junior high mock exams. You can browse their 2021 Mock Exam section which includes papers and answer keys.

: Platforms like Gaokao Zhitongche maintain extensive archives of past papers that can be downloaded to your mobile device.

: This platform provides teacher-verified exam resources, including mock series for all major subjects.

While specific download links for internal school files often expire or change, you can find these 2021 archives through several dedicated educational platforms. Recommended Download Portals

: Many universities and high schools (like South Medical University or Lanzhou University of Finance and Economics ) post their December exam notices with attached ZIP files containing schedules or practice materials.