﹣5的绝对值是( )
A:5
B:-5
C:15
D:±5
未成年人应增强自我保护意识,掌握自我保护方法。下列做法正确的是( )
下图表示制作洋葱鳞片叶表皮细胞临时装片的部分实验步骤,正确的顺序是( )
(____) I'm looking out of the window.
(____) Some children are making a snowman.
(____) In this photo,we are in the mountains.
(____) The wind is blowing and the sun is shining.
(____) I am having a lovely time.