7.完成下列反应式。-|||-(1) (H)_(2)=CH-CH=!=!= C(H)_(2)+C(H)_(2)=!=!= CH-CHOxrightarrow (Delta )-|||-(2) (H)_(2)=CH-CH=C(H)_(2)+-|||-O-|||-CH- -C-|||-O-|||-CH-C-|||-O-|||-(3)CH2=CH-CH=CH2+C H2=CH-CN __-|||-(4) (H)_(2)=C-CH=C(H)_(2) 聚合-|||-Cl