---What did your teacher say this morning?

--She asked me                 this morning.

A．how did Tom come to school

B．why was Tom late for school

C．when Tom would get to school

D．what will Tom do at school

“绿色开采技术”中（）形成煤层巷道支护技术与减少矸石排放技术。

A.一通三防

B.水资源保护

C.少占用农田和污染环境

D.土地与建筑物保护