Which object is rigid? , , , Which object is rigid? , , , Which object is rigid? , , , Which object is rigid? , , , Which object is transparent?, , , Which objects are made of wood?, , , , Which object is made of plastic?, , , , Which objects are soft? , , , , Which objects are hard? , , , , Which objects are smooth? , , , , Which objects are flexible? , , , , What are the three common states of matter? , solids, liquids, and gasses , bricks, water, and air, solids, liquids, and air.

solid properties

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恢復自動保存: ?