设有变量说明int(*ptr[m])；其中的标识符ptr是( )。

A) m个指向整型变量的指针
B) 指向m个整型变量的函数指针
C) 一个指向具有m个整型元素的一维数组的指针
D) 具有m个指针元素的一维指数组，每个元素都只能指向整型变量

After he was promoted to the present position, he is not so hardworking as he ______.   [ ]

A. was used to    

B. used to be    

C. was used to being  

D. used to