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[语文] 求教一道填空题,谢谢!

发表于 2019-9-9 15:49:29 | 显示全部楼层 |阅读模式
3.      At one time researchers viewed the placebo effect as (i)_____,a statistical (ii)_____ faced by those attempting an objective evaluation ofthe efficacy of potentially legitimate therapies. That view has changed: the placebo effect istoday seen as an important part of the healing process.
A. a boon
D. increment
B. a touchstone
E. annoyance
C. an impediment
F. deviation

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