Who did the teacher ___ as article for the wall newspaper?

A．has write

B．has written

C．have write

D．have written

《建筑材料放射性核素限量》（GB6566—2001）中规定，制样时应先将检验样品破碎，磨细至粒径不大于（）mm，将其放入与标准样品几何形态一致的样品盒中，称重（精确至（）g）、密封、待测。