“大开窗户纳宇庙，醉与花鸟为友朋”是谭延闿为哪家药店题写的对联？
参考答案：
北协盛
对法洛四联症病情轻重起决定作用的病变是（）
A.肺动脉狭窄
B.房间隔缺损
C.主动脉骑跨
D.室间隔缺损
E.右心室肥大
For markets with perfectly elastic supply, the introduction of a tax will most likely result in:（）
A. a price increase and the seller pays the entire tax.
B. a price increase and the buyer pays the entire tax.
C. no change in price and the seller pays the entire tax.
