A:①②
B:①③
C:②③
D:③④
观察甲、乙两幅图,图中所反映的动物行为类型分别属于( )
给加线字注音
恪 ____守 绰 ____号 确凿 ____ 倔 ____犟
—We are supposed to visit him from time to time. Then he won't feel _______.
用低倍显微镜观察某装片时,如果发现视野中有一小异物,移动装片,异物并不动,转动物镜后,异物也不动,这异物可能在( )