預防老年癡呆題答案 Posted on 2018-01-16 by dylan816 1 月, 2018 (1+1+1)! 2+2+2 3*3-3 √4+√4+√4 5+5/5 6+6-6 7-7/7 3√8+3√8+3√8 √9*√9-√9