I had not driven many miles when I was ______ by a policeman. He asked to see my licence.[ ]

A. pulled up

B. picked up

C. brought up

D. taken up

急性非淋巴细胞性白血病的特征之一是（）

A.好发于儿童

B.瘤细胞核染色质粗大、成堆

C.瘤细胞有嗜苯胺蓝颗粒

D.B细胞起源者居多

E.DNA多聚酶（TdT）阳性