A long time ago, at a national conference on biology, he cautiously______his new theory of life.

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问题 A long time ago, at a national conference on biology, he cautiously______his new theory of life.

选项 A、produced
B、relieved
C、advanced
D、thrust

答案C

解析 动词词义辨析题。题意:“很久以前,他在一次全国性的生物学会议上谨慎地提出了自己新的生命理论。”C advance意为“提出(建议、意见等)”,符合题意。Aproduce:产生,制造。B relieve:减轻,缓解。D thrust:猛塞;刺,戳。
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