目前，诊断椎管内肿瘤最为有效的检查手段是（）
A.X线平片
B.CT
C.磁共振
D.脊髓蛛网膜下腔碘油造影
E.脑脊液细胞学检查
参考答案：C
Tom: Would you like me to water your plants while you’re on your holiday?
Joe: ________
A．No problem. I was more than glad to do it.
B．I appreciate it, but I’m already finished watering them.
C．Thanks for offering your help, but my brother’s going to do it.
D．Certainly watering plants is my favorite pastime.
下列哪些激素是与核受体结合而发挥作用( )
A.糖皮质激素
B.雄激素
C.甲状旁腺素
D.雌、孕激素
E.1,25(OH)2 D3
