_______ for the doctor’s careful treatment, he _______ till last year.

A．If it is not; can’t live

B．Were it not; couldn’t live

C．Had it not been; couldn’t have lived

D．If it were not; wouldn’t live

以下程序是求100以内能被5和被7同时整除的所有数之和。 main() { int i=0，s=0； while(i＜100) if(______) s=s+i++； printf("s=%d\n"，s)； }