治疗中枢神经系统白血病首选药物是（）
A.长春新碱
B.环磷酰胺
C.三尖杉碱
D.6-巯基嘌呤
E.甲氨蝶呤
参考答案：E
Look at those ________. They are _______. [ ]
A. photoes; hers
B. photos; his
C. photo; her
D. photoes; mine
对企业厂区以外的公共绿化用地和向社会开放的公园用地，暂免征收城镇土地使用税。( )
