单选题
As the contest shows, a placebo is ______.
A、
a dummy medication
B、
a chronic Lyme patient
C、
one peak Lyme month
D、
better than an antibiotic
【正确答案】
A
【答案解析】
由The others received dummy medications.…But so did a third of those on the placebo可知正确答案是A(无药性的、安慰性的治疗)。
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