当然不是这样硬性规定的。可操作的范围很大:前提是如果curve是合理且没有学生反对的话。其实还有很多别的办法。
所有跟帖:
• i c. I thought it is just based on mean and SD, which -Smart- ♂ (39 bytes) () 12/24/2017 postreply 22:46:23
• i c. I thought it is just based on mean and SD, which -Smart- ♂ (39 bytes) () 12/24/2017 postreply 22:46:23