Usually John would be late for meetings. But this time,           to my surprise, he arrived on time.  

A little       B. much        C. ever        D. even 

在下列函数的参数传递方式中，可以改变实参值的参数传递方式是( )

A．值传递
B．地址传递
C．返回值传递
D．A、B和C