题干
—It's important for us to know all the subjects.
—Yeah, group work is my favorite.
A：how to study
B：when to study
C：which to study
D：what to study
答案(点此获取答案解析）
A
，半径为3的扇形面积是
÷ 
= 
……6中，除数最小应为几，当商是8时，被除数最小应为几?