【答案解析】To gibber (chatter foolishly) is to speak without sense. To vacillate (waver) is to act without resolution (firmness of resolve). (Antonym Variant)
单选题
UPROARIOUS : AMUSING ::
【正确答案】
D
【答案解析】Something uproarious is by definition extremely amusing. Something repugnant is by definition extremely disagreeable. (Degree of Intensity)