阿摩線上測驗
44.
(A) The placebo effect is only observed in rare diseases.
(B) Clinical trials that do not include placebos are considered unethical.
(C) These trials help determine whether a treatment performs better than belief alone.
(D) Medical journals rarely publish placebo-controlled studies.
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統計： A(0), B(3), C(4), D(0), E(0) #3449885
統計： A(0), B(3), C(4), D(0), E(0) #3449885
