Most students spend too much time ________ computer games.
A:playing
B:play
C:plays
D:played
下面是制作洋葱鳞片叶内表皮细胞临时装片图,它的顺序应该是( )
42÷5=8……2 39÷6=6……3
64÷9=7……1 53÷7=7……4
比一比,再组词。
咆____ 狞____ 淌____
饱____ 拧____ 倘____
揪____ 呻____ 瞅____
伸____