9.87÷3.9=____
25÷19=____
(得数保留两位小数)
Danny can't run fast. He is _______.
八年级某位老师在讲授“祖国统一的历史大潮”时,设计了如下板书。其中,方框中的内容应是( )
Which sign means “Don't eat in class.”?