10.2酸和碱的中和反应基础训练（答案） 年九年级化学人教版下册考试试卷

10.2酸和碱的中和反应基础训练（答案） 年九年级化学人教版下册考试试卷，目前全国100所名校答案网已经汇总了10.2酸和碱的中和反应基础训练（答案） 年九年级化学人教版下册考试试卷的各科答案和试卷，更多全国100所名校答案请关注本网站。

书面表达One possible version:Dear follow students,To raise the awareness of environmental protection and learn garbage classification rules,we are going tohold a Garbage Classification Poster Design Competition this month.The competition is open to anyone.The designs,in both Chinese and English,can be hand-drawn ordigitally produced.Submissions can be made as an individual or as a team.Please hand in your work to Li Huain Room 102 before December 22.The designs will be displayed from January 23 to 29 in the school hall and onour school website.The award ceremony will be held two weeks later.Your participation is a great encouragement for us.The Students'Union

8.C分析题图可知，O一1，细胞失水导致细胞液渗透压上升，细胞出现质壁分离，原生质体体积减小，液泡变小，紫色变深，A正确：该实验表明细胞能发生质壁分离及自动复原，说明外界溶液可能是适宜浓度的K○溶液或尿素溶液等，B正确；细胞从实验一开始就吸收外界溶液中的溶质，一2细胞吸水导致渗透压下降，C错误；洋葱根尖分生区细胞没有大液泡，用该细胞重复该实验，不能得到上述实验结果，D正确。