My life ____ a lot in the last few years. [ ]
A. change
B. changed
C. has changed
答案:C
级配碎石适用于各级公路的( )。
A.基层
B.面层
C.下面层
D.上面层
E.底基层
元好问尊称谁是“儒教大宗师”()
A、成吉思汗
B、努尔哈赤
C、忽必烈
D、窝阔台