Windows 7 was created in 2009,      many computer lovers were interested and excited.

A．when

B．where

C．why

D．which

下列各项可以免征土地增值税的有( )。

A．房地产开发商出售房屋的增值额未超过扣除项目金额10%

B．交换房屋后价值增长了50%

C．房地产开发商出售房屋的增值额为50%

D．由于遗嘱继承的房屋其价值增长50%

E．国家依法收回的房地产，其价值增长为50%