水-Water

小编: 刘放

WaterWater is very important for living things. Without water there can be no life on earth. All animals and plants need water.

Manalsoneedswater.Waterisfoundatmosteverywhere.Eveninthedriestpartoftheworldthereissomewaterintheair.Asweallhavefoundoutwatermaybeasolidoraliquidoragas.WhenitisasoliditmaybeashardasbrickWhenitisaliquidyoucanpouritoutofacontainer.Whenitisagasyoucannotseeorfeelit.Althoughabout70percentoftheearth'ssurfaceiscoveredwithwatertherearemanyplacesintheworldstillrunningoutofwater.Soweshouldmakegooduseofwateronearth.水水对生物很重要,没有水,地球上就没有生命。所有的动植物都需要水。人类也需要水。

水几乎无处不在。即使在世界上最干燥的地方,空气中也有水。水,正如你所了解的,有固态、液态和气态。

当它是固态时,它可以像砖一样硬;当它是液态时,你可以将它从容器中倒出;当它是气态时,你看不见或感觉不到它。虽然地球表面70%是水覆盖着,世界上仍有许多地方缺水。所以我们要好好利用地球上的水。

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