心脏毒性强的药物是（）
A.环磷酰胺
B.柔红霉素
C.甲氨蝶呤
D.长春新碱
E.顺铂
参考答案：B
Tom ________ in the library every night over the last three months.[ ]
A. works
B. worked
C. has been working
D. had been working
易侵犯中枢神经系统的白血病是（）
A.急性粒细胞性白血病
B.急性单核细胞性白血病
C.急性早幼粒细胞性白血病
D.急性淋巴细胞性白血病
E.慢性粒细胞性白血病
