They would __if food was difficult to find, so they celebrated when they had food.

A．kill

B．disappear

C．starve

D．start

8个月皮肤蜡黄，虚胖，头部全身震颤，红细胞2．1×10¹²／L，血红蛋白80g／L。应诊断为（）

A.溶血性贫血

B.营养性缺铁性贫血

C.缺乏叶酸所致的巨幼红细胞性贫血

D.营养性混合性贫血

E.缺乏维生素B12所致的巨幼红细胞性贫血