If you want jazz. Please go to the Fantastic House.
A:listen to
B:hear
C:to listen to
D:to listen
读图文材料,回答问题。
已知: ⅰ CH3CH=CH2 →O2催化剂 CH3CHO + HCHO;
ⅱ RCHO →HCN →H2O/H+、△
完成下列填空: