用光学显微镜观察有丝分裂，若从细胞周期考虑，根据右表中提供的信息，选择合适的实验材料       

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='22580' and id < 1978409 and id<>'1978409' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='22580' and id > 1978409 and id<>'1978409' order by id asc limit 5