脑转移鞘内注射,首选药( )
A.氟尿嘧啶B.环磷酰胺C.甲氨蝶呤D.氟尿嘧啶+更生霉素E.联合治疗
参考答案:C
下列有关“纳税”的叙述,哪一项是正确的( )
A.高收入者多纳税,低收入者少纳税
B.纳税会增加个人负担,降低家庭生活水平
C.纳税靠自愿,不能靠强制
D.我们未成年人没有任何收入,因此纳税与我们无关
____you are familiar with the author’s ideas, try reading all the sections as quickly as you possibly can.
A.Now that
B.Ever since
C.So that
D.As long as