Because he was ________ the new limit, he was stopped and warned for speeding.A.good atB.tired fromC.unaware ofD.uninterested in
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C解析句意：由于他不知道新的限速，他被拦了下来并被警告超速。根据所给选项意思，be unaware of--not having understanding or knowledge of不知道，不明白，没意识到。be good at擅长；be tired from因……而劳累；be uninterested in对……不感兴趣。