-----------------deleted ,a file can no longer be restored.A.ASB.OnceC.ThoughD.If only
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-----------------deleted,afilecannolongerberestored.A.ASB.OnceC.ThoughD.Ifonly-----------------delet
-----------------deleted ,a file can no longer be restored.A.ASB.OnceC.ThoughD.If only
-----------------deleted ,a file can no longer be restored.
A.AS
B.Once
C.Though
D.If only
-----------------deleted ,a file can no longer be restored.A.ASB.OnceC.ThoughD.If only
B
问题补充：这些游走四方的先民们使得这种植物不再成为一个地区的天然食物 这些民族是游牧民族谁在天然食品时，可以不再被人发现在移动领域