听力原文:W: Don't take too long at the snack bar. It's a quarter past 12. M: It's OK. We have 45 minutes before the plane leaves. Q: At what time is their departure scheduled? (15)
【简答题】根据给出的有机物的结构简式或名称按要求填空: ① ② ③ ④5,5-二甲基-4-乙基-2-己炔⑤ ⑥ ⑦ ⑧ (1)写出①的系统命名法的名称______; (2)写出④的结构简式______; (3)属于脂肪烃的是______(填序号); (4)属于芳香烃的是______(填序号); (5)属于苯的同系物是______(填序号); (6)任写一种与⑧互为同分异构体的结构简式______.