He concluded that empirical evidence supports the ___of these treatments.A.efficiency
He concluded that empirical evidence supports the ___of these treatments.A.efficiency
B.efficacy
C.affect
D.affection
正确答案:efficacy
He concluded that empirical evidence supports the ___of these treatments.A.efficiency
B.efficacy
C.affect
D.affection
正确答案:efficacy
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