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.
Aplacement
Bplacebo正確答案
Cplacenta
Dplasma
答案與詳解
為什麼答案是 B
placebo（安慰劑）正是新藥試驗中給對照組服用的假藥，外觀與真藥一致但無實際療效，符合題幹敘述。
考點：安置/職位考點：安慰劑考點：胎盤考點：血漿
載入中…
