It is not always easy for the public to see _______ benefit a new invention can be of to human life. [ ]

A. whose        

B. what    

C. which        

D. that

下列二维数组初始化语句中，正确且与语句int a[][3]=1,2,3,4,5等价的是( )。

A) int a[2][]=1,2,3,4,5;
B) int a[][3]=1,2,3,4,5,0;
C) int a[][3]=1,0,2,0,3,0;
D) int a[2][]=1,2,3,4,5,6;