10. Animals can live only on what plants have already turned from inorganic to vegetable matter.（以后在名词型从句处做具体讲解）en.Examw.CoM
11. No bird nor fish nor other animal could ever have lived on this earth， if the plants had not come first and fitted it for the dwelling place of a higher order of beings. （对过去进行虚拟：主句用情态动词+have done， 从句用过去完成时 had done 的形式）
12. It takes up such parts of the soil as are dissolved in the water. （as的句型是特殊的定语从句句型，由于前面出现了such才会采用as 来做定语从句的关系代词；take up 的意思是吸收；本句话的意思为：植物还会吸收能够在水中溶解的部分土壤。）
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