(来学网)某小儿,2个月。足月顺产,母乳喂养,为预防佝偻病服用维生素D,每日补充的合理剂量是
  • A.
    (来学网)200IU
  • B.
    (来学网)400IU
  • C.
    (来学网)2000IU
  • D.
    (来学网)5000IU
  • E.
    (来学网)10000IU