答案:A
All the ___ given by Mr Smoth ___ quite helpful to us all.
A.advices… are
B.advises… are
C.advice… is
D.advise… is
自由基共聚合反应中,聚合温度升高,则()
A、r1·r2→0,向交替共聚方向变化
B、r1·r2→1,向理想共聚方向变化
C、向无规方向变化