A:需在低倍镜下找到分生区,再在高倍镜下观察
B:应分别观察中期的细胞,作为比较和区分的依据
C:若观察到细胞都为长方形,可能还没有找到分生区
D:如果观察到的一个细胞中含24条染色体,则它可能是二倍体或四倍体装片
根据句子意思和所给的首字母写出所缺单词。要求在答题卷上写出完整的单词。(每空只写一词)Most people will feel h____ when they are away from their homes for a long time.Whether to go or not. It’s difficult for me to make a d____ We hope our f____ will last forever.He works hard every day. I think he will a____ his ambition one day.The student not only learn k____ from the textbooks but also from different activities.
粤菜、川菜、湘菜、鲁菜是我国著名的菜系,永州菜系属于 ( )
“凡是生活的地方就有快乐和宝藏。”我们要培养高雅的生活情趣,在娱乐和休闲中做到( )