—The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job?

—____ my students have a try?

A．Shall

B．Will

C．Could

D．Should

有以下程序

　　#include

　　int fun()

　　{ static int x=1;

　　x*2; return x;

　　}

　　main()

　　{int i,s=1，

　　for(i=1;i<=2;i++) s=fun();

　　printf("%d\n",s);

　　｝

　　程序运行后的输出结果是（）

A．0

B．1

C．4

D．8