The techniques now available to livestock breeders will continue to be _____, but will probably be_____by new ones under development.
Blank(i) Blank(ii)
A.refined
B.inconvenient
C.used
D.preserved
E.supplemented
F.uprooted
Blank(i) Blank(ii)
A.refined
B.inconvenient
C.used
D.preserved
E.supplemented
F.uprooted

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