butitcanalsobeasolid的精選

問題詳情：      Waterisahquid(漬體);butitcanalsobeasolidwhenitisverycoldandturnstoice.Itcanalsobeagas,whenitevaporates (蒸發) andbecomewatervapour (水蒸氣).Thewatercycle     Waterisveryimp...