我国工程岩体分级标准中岩石的坚硬程序确定是按照()。
A.岩石的饱和单轴抗压强度
B.岩石的抗拉强度
C.岩石的变形模量
D.岩石的粘结力
参考答案：A
少先队阵地是指什么？
— It's burning hot today, isn't it?
— Yes.________yesterday.[ ]
A. So was it
B. So it was
C. So it is
D. So is it
