题干
— Have you used the new computer ________?
— Yes, I have. I have ________ used it.
A：just, just
B：yet, just
C：just, yet
D：yet, yet
答案(点此获取答案解析）
B
是一平面图形
的斜二侧直观图，若 
,则四边形ABCD的面积是( )