有关铁代谢的检查中，较灵敏地反映体内贮铁情况，在缺铁的铁减少

搜题请搜索小程序“爱下问搜题”

问题单项选择题

有关铁代谢的检查中，较灵敏地反映体内贮铁情况，在缺铁的铁减少期即有改变的指标是（）

A.血清铁

B.血清铁蛋白

C.总铁结合力

D.骨髓可染铁

E.红细胞游离原卟啉

答案

参考答案：B

选择题

He was such _____ good speaker that he held our attention every minute of _____ three-hour lecture.

A．/, the

B．a, /

C．a, the

D．a, a

选择题

— Is there anything wrong, Bob? You look sad.

— Oh, nothing much. In fact, I _____ of my friends back home. [ ]

A. have just thought

B. was just thinking

C. would just think

D. will just be thinking