单选题
Early signs of ______ seen in the herbal medicine study are extremely encouraging and based upon these data, we are now planning a registration program.
A、
faculty
B、
reception
C、
deterioration
D、
efficacy
【正确答案】
D
【答案解析】
[解析] faculty才能,技能;reception接待,接收;deterioration变坏,堕落;efficacy功效。
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