题干
—Could I do an with you tomorrow?
—Yes，of course．
A：interview
B：interviews
C：director
D：directors
答案(点此获取答案解析）
A
—Could I do an with you tomorrow?
—Yes，of course．
A：interview
B：interviews
C：director
D：directors
+ 
与x轴交于A，B两点，与y轴交于点C，若点D是AB的中点，求CD的长．