亲脂性较强，易通过血脑屏障的药物是
A．卡莫司汀B．氟尿嘧啶C．环磷酰胺D．巯嘌呤E．盐酸阿糖胞苷
参考答案：A
--- Which of the two poems do you like better?
--- ____ short one, of course. I think it’s really ___ most interesting one.
A．A, the
B．The, a
C．The , the
D．A, a
被撤销的民事行为从撤销时开始无效。( )
