A long time ago, at a national conference on biology, he cautiously ______ his new theory on life.

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问题 A long time ago, at a national conference on biology, he cautiously ______ his new theory on life.

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

答案A

解析 题意是“……提出关于生命的新理论”,与此处的“提出”意思对应的是 advanced。
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