most substances contract when they freeze so that the density of a substance's solid is ( )
问题描述：
most substances contract when they freeze so that the density of a substance's solid is ( )
of its liquid A than the density B higher than that C higher than those D high than thar 这题一看就懵了,分析不出来,
答
B that= the density of a substance
因此物质的固态密度通常 比它的液体密度高!为啥不选D比较级啊， 当然用higher了