A:减速上升
B:加速下降
C:匀速上升
D:加速上升
细菌和酵母菌的生殖分别是( )
小力同学加热2mL蒸馏水,操作的正确顺序是 ____ (填序号).
①用试管夹夹好试管 ②点燃酒精灯 ③加热 ④盖好试剂瓶,放回原处 ⑤往试管中加入2mL蒸馏水.
It seems that Fantasy Dramas have been ____over the years.