血管性痴呆特征性的病理改变是（）
A.老年斑
B.多发性脑梗死
C.Pick小体
D.路易小体
E.脱髓鞘改变
参考答案：B
— Won't you go to the football match tonight?
— _______. I might stay at home watching it live on TV instead.[ ]
A. I'd rather not
B. I'm not sure
C. I guess so
D. I'd love to
系统转换有哪几种方式，各有什么优缺点？
