《处方管理办法(试行)》适用于

A．开具、审核、调剂、制剂相应机构和人员

B．开具、审核、调剂、制剂、保管处方的相应机构和人员

C．开具、审核、调剂、检验、保管处方的相应机构和人员

D．开具、审核、调剂、保管处方的相应机构和人员

E．开具、审核、保管处方的相应机构和人员

His parents were so poor that they couldn’t _______ to buy a computer for their only son .

A．pay

B．cost

C．spend

D．afford