Yunnan is       colorful     millions of people come to enjoy themselves every year.                                                                      

A．too…to

B．so…that

C．not…until

D．so…but

男性，40岁，痔疮出血1年，乏力、面色苍白3个月。查体：贫血貌，巩膜无黄染。血象：白细胞4.6×10⁹/L，红细胞3.9×10¹²/L，Hb 65g/L，血小板330×10⁹/L

该患者为何种细胞形态学贫血

A．正细胞性贫血

B．大细胞性贫血

C．小细胞低色素性贫血

D．巨幼细胞贫血