(2013·北京东城期末)—Do you know if Linda is willing to take charge of the program?

—________，does it?

A．It takes no time

B．It counts for nothing

C．It doesn't hurt to ask　　

D．It doesn't make sense

水泥混凝土抗冻性试验中，每经历50次或25次冻融循环后，应对试件进行检查．检查完毕装桶时，必须将试件调头。（）