12.某同学利用青菜的幼苗进行了四项实验如下图所示下列说法不正确的是 A.实验��对照可以证明植物生长具有�光性 b.实验�进行一段时间 Template




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tomski12.某同学利用青菜的幼苗进行了四项实验如下图所示下列说法不正确的是 a.实验��对照可以证明植物生长具有�光性 b.实验�进行一段时间 coloring