小明不慎将墨水滴在数轴上,根据图中的数值,判定墨迹盖住部分的整数的和是____ .
Remember that ______ is better than cure, so brush your teeth at least twice a day and visit your dentist for regular check-ups.
我国耕地、林地、草地面积,由大到小排列的顺序是( )