CH3 N CH3 OH CI and CH; : 入NCH N H3 and OH OCOR and CH3 鼎 作业成绩列入平时成绩，占总成绩的20%。S N Cl N CH3 CH3 S N N N OH CF3 and S N Cl N CH3 CH3 O N Cl N CH3 CH3 S N N N OH CF3 S N N N OCOR CF3 and and S N Cl N CH3 CH3 S N Cl NH CH3 作业成绩列入平时成绩，占总成绩的 20%