A:儒家学派
B:道家学派
C:墨家学派
D:法家学派
膳食宝塔级数
Ⅴ级
Ⅳ级
Ⅲ级
Ⅱ级
Ⅰ级
食物分类
油脂类
豆类和奶类
鱼禽肉蛋类
果蔬类
谷类
每日摄取量
小于25g
100﹣150g
125﹣200g
400﹣750g
450﹣500g
——Be quiet! Mr Smith is coming.——Don't worry. It__________be him. Mr Smith is much taller.
This time____ ____ ____didn't do well in the exam.
如果(m+3)x2-mx+1=0是一元二次方程,则 ( )