The professor could tell by the ________ look in her eyes that she did not understand a single word

of his lecture. [ ]

A. cold

B. blank

C. innocent

D. fresh

Burkitt淋巴瘤/白血病急性淋巴细胞白血病（ALL）的特点为（）

A.具有法-美-英（FAB.协作组-L3的形态学特点，白血病细胞空泡多见

B.通常具有MyC基因重排

C.细胞倍增时间短

D.采用强烈、短促的化学治疗能显著提高疗效

E.异基因移植可显著改善疗效