己烷
参考答案：指分子结构中含6个碳原子和14个氢原子的无环开链烷烃，化学式为C6H14，有五种异构体，主要为正己烷和新己烷。
已知抛物线y2=4x上一点到焦点的距离为6，则这点的坐标是______．
We _______ TV when the telephone rang. [ ]
A. watched
B. were watching
C. watch
D. are watching
