The officials soon realized that, _________, things would get worse.

A．unless dealt with it properly

B．if not properly dealing with

C．unless properly dealt with

D．if dealt not properly with

铁粒幼细胞性贫血与缺铁性贫血鉴别主要选择下列哪项检测( )

A．红细胞内游离原卟啉测定
B．MCV、MCH、MCHC
C．骨髓铁染色
D．血清铁饱和度
E．血清总铁结合力