贫血最常见的临床表现是\n \n\n \n A.
窦性心动过速\n \n \n B.
心脏扩大\n \n \n C.
口腔炎、舌炎\n \n \n D.
皮肤和黏膜苍白\n \n \n E.
毛发干枯无光泽