数菜籽 11月9日 晴今天科学课,李老师走进教室就问了我们两个问题:“你们猜一猜,每棵油菜上大约有多少个菜荚?每个菜荚里有多少颗菜籽...
一、The analisis of students: Children are developing quickly as individuals. They have a very short attentio...