18._____ are not leached out of soil,reclamation procedures are need to restore the land’s productivity.
(A) For concentrations of salt
(B) Salt concentrahons that
(C) If salt concentrations
(D)with concentrations of salt
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統計: A(27), B(7), C(93), D(10), E(0) #923646
統計: A(27), B(7), C(93), D(10), E(0) #923646
詳解 (共 3 筆)
#1166874
concentration 濃度
1
0