14. ______ are not leached out of soil, reclamation procedures are needed to restore the land’s productivity. A) For concentrations of salt B) Salt concentrations that C) If salt concentrations D) With concentrations of salt

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統計： A(22), B(7), C(54), D(12), E(0) #536625

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If salt concentrations are not leached out of soil,reclamation procedures are needed to restore the land’s productivity.
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