目标USAPhO Gold的话, 试试PhysicsWOOT.
所有跟帖:
• 谢谢!这个课是 text based, no talking from the teacher. My kid did not -四叶之草- ♀ (0 bytes) () 12/07/2021 postreply 22:42:00
• My kid does not like text based class -四叶之草- ♀ (0 bytes) () 12/07/2021 postreply 22:46:00