关于植物扦插的实验操作,错误的是( )
A.茎段一般保留2个节
B.茎段上方切成水平的
C.茎段可以倒过来扦插
D.茎段下方切成斜向的
答案:C
14.It was in the village ____ he once lived ____ he got his junior education.
A.that; where
B.where that
C.which; where
D.where; which
造成患者死亡的用药差错属于
A.A级差错B.B级差错C.C级差错D.D级差错E.Ⅰ级差错