单项选择题
A.plangent B.ersatz C.acerbic D.keen E.erstwhile
PROMPT:A.step downB.checkC.deceiveD.perplexE.bend
单项选择题PROMPT:
CONVERSANT:A.pedanticB.feebleC.propitiousD.ignorantE.sp...
单项选择题CONVERSANT:
INHIBITOR:A.responseB.dissolventC.sour substanceD.catal...
单项选择题INHIBITOR: