A:植物细胞的原生质层相当于一层半透膜
B:一定条件下,活的、成熟的植物细胞能发生渗透失水或吸水
C:当溶液甲的浓度>细胞液乙的浓度时,细胞发生渗透失水,当细胞液乙的浓度>溶液甲的浓度时,细胞发生渗透吸水
D:当溶液甲的浓度=细胞液乙的浓度时,细胞处于平衡状态,水分子不再通过原生质层
补全下面的短文。
It was____yesterday.Bob got up early.He____English in the garden.After breakfast,he washed his clothes.In the afternoon,he____his aunt pick apples on the farm.In the evening,he____to work on the Internet but the computer didn't work.So he____it.What a busy day!
26-7=____。
某校研究性学习小组利用暑假到野外进行考察。读下图“野外考察区域地形图”,下列现象与该小组考察结果吻合的是( )