--- Do you think Bob will attend the meeting this afternoon?  

--- ______．

A．I hope not

B．I don’t hope so

C．I don’t think it

D．I hope he would

对成包皮棉进行马克隆值检验时，要求按批样数量的（）%随机抽取马克隆值试验样品，逐样测试马克隆值。