I think the doctor is able to care of _____ is the matter with your son .

A．all

B．what

C．whatever

D．anything

按反应特征与产物的结构关系，有机反应大致可分为：取代反应、消去反应、加成反应三种，下列变化中不属于取代反应的是

A．C₆H₅CH₂Cl+NaCN —→ C₆H₅CH₂CN+NaCl

B．2Na +2 C₂H₅OH—→ 2C₂H₅ONa + H₂↑

C．CH₃CH₂CHO＋HCN —→ CH₃CH₂CH(CN)OH

D．CH₃COOC₂H₅＋H₂O —→ CH₃COOH+C₂H₅OH