干扰食物铁吸收的因素是
A.三价铁B.还原铁C.铁蛋白D.植酸E.维生素C
参考答案:D
— What were you up to when your parents came in?
— I__for a while and__some reading.
A.was playing; was going to do
B.played; did
C.had played; was going to do
D.had played; did
为确诊伤寒,阳性率最高的检测是()。
A.血培养
B.骨髓培养
C.尿培养
D.胆汁培养
E.便培养