—Jean, I didn’t do very well in this test.

—____. I’m sure you will make great progress if you improve the way you study.

A．Not at all

B．Don’t lose heart

C．I hope so

D．Never mind

下列程序的运行结果是：【 】　　#include ＜string.h＞　　char *ss(char *s)　　{　return s+strlen(s)/2;}　　main(　 )　　{　char *p,*str=”abcdefgh”;　　　p=ss(str);　printf(“%s\n”,p);}