His aunt ________ Beijing and she will stay there for three years.  [ ]

A. has gone for

B. has been to

C. has left

D. has left for

有关白血病的叙述，下列哪项是错误的（）

A.Ph染色体是只有慢性粒细胞白血病才有的特异性染色体

B.急性淋巴细胞白血病无Auer小体

C.急性粒细胞白血病骨髓象常有"细胞裂孔"现象

D.慢性粒细胞白血病急变期时中性粒细胞碱性磷酸酶（NAP）积分可增高

E.急性粒细胞白血病过氧化物酶染色阳性