1:C.2:BD 3A 4:D 5:B 6:A
7:CH3CCl＝CHCl或CH3CH=CH2 CH3C≡CH
8：C2H6 C2H2 CO2
9：2-甲基-2-戊烯
10.14 L 6 L
11.2.3 t
12.160 g