题干
of the students are going to visit the factory next week.
A：Three fifth
B：Third fifths
C：Three fives
D：Three fifths
答案(点此获取答案解析）
D
of the students are going to visit the factory next week.
A：Three fifth
B：Third fifths
C：Three fives
D：Three fifths
的方程
有一个根为
，则△ABC中一定
有( )
