—Is this her watch?
—________. [ ]
A. No, it is.
B. Yes, it's.
C. Yes, it is.
C
疥疮散功效与作用
有以下程序 main(){int a=0,b=0;a=10: /* 给a赋值b=20: 给b赋值 */printf("a+b=%d\n",a+b);/*输出计算结果*/ }程序运行后的输出结果是【 】。
A.a+b=10
B.a+b=30
C.30
D.出错