10 To test a new painkiller, researchers gave it to one group of volunteers, while a second group got a ________, identical in appearance to the new medicine but with no built-in power to relieve pain.
(A) placement
(B) placebo
(C) placenta
(D) plasma

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統計： A(0), B(0), C(0), D(1), E(0) #3735462

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#7265381
正確答案： (B) placebo ...
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10 To test a new painkiller, researchers gave it to one group of volunteers, while a second group got a ________, identical (一致的) in appearance to(與~~外觀) the new medicine but with no built-in(無內含內置) power to relieve pain.減輕痛苦
(A) placement
(B) placebo
(C) placenta
(D) plasma
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10. 为了测试一种新的止痛药，研究人员给一组志愿者服用该药，而另一组志愿者则服用________，该药物外观与新药相同，但不具备止痛功效。 (A) 放置布置 (B) 安慰劑 (C) 胎盘 (D) 血浆

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