John fell asleep _____ he was listening to music. [ ]

A. after

B. before

C. while

D. as soon as

男，30岁，发热、出血、贫血、齿龈增生。全血细胞减少，骨髓增生极度活跃，原始细胞占85%，过氧化物酶(±)，非特异性酯酶(+++)。诊断为

A．急淋白血病L型

B．急粒白血病M型

C．急粒白血病M型

D．急粒白血病M型

E．急粒白血病M型