属于前体药物的是( )
A．塞替派
B．白消安
C．甲氨蝶呤
D．卡莫氟
E．环磷酰胺
参考答案：A,D,E
You need to take your job _____ if you want to keep it.
A．curiously
B．seriously
C．nervously
D．humorously
行纤维鼻咽镜检查时，如为腺样体肥大则可见（）
A.表面粗糙、呈菜花样肿块
B.表面光滑、有血管纹的红色肿块
C.表面光滑，如荔枝肉状透明肿块
D.表面光滑、有纵形裂隙的分叶状淋巴组织
E.表面光滑、黄白色肿块
