If no passers-by _____ a blind eye to the injured little Yueyue in Foshan Guangdong, she _____ alive now．

A．turned; would be

B．had turned; would have been

C．turned; would have been

D．had turned; would be

有如下类定义：class Sample {public;Sample(int x):ref(x){} //①private:Sample():ref(0){) //②static int va1=5; //③const int ref; //④};上述程序段中，错误的语句是( )。

A．①

B．②

C．③

D．④