When I moved to the city two years ago, the government _____ several modern buildings here.  [ ]

A. built

B. will build

C. had built

D. has built

有以下程序段，且变量已正确定义和赋值 for(s=1.0, k=1; k＜=; k++) s=s+1.0/(k*(k+1)); printf("s=%f\n\n", s); 请填空，使下面程序段的功能与之完全相同 s=1.0; k=1; while( 【10】 ) { s=s+1.0/(k*(k+1)); 【11】 ; } prinff("s=%f\n’n", s);