手背擦上酒精后,擦酒精的位置会感到凉,这是因为酒精发生了____ 现象(填物态变化的名称);同时能闻到酒精气味,这表明____ .
我国山区自然资源的优势在于( )
--- What do you think of the dress?--- Wonderful. I don't think I can find a ________ one.