()主要是指学校地区分布结构。
A.教育级别结构
B.教育类别结构
C.教育形式结构
D.教育布局结构
参考答案:D
— What about the protection?
— Let's keep the surface ________ dirt by putting a cover on it.[ ]
A. far from
B. free from
C. apart from
D. away from
为什么遮光避日反遭光害?