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The majority of doctors ______ smoking is harmful to health.
A.are believedB.had believedC.has believedD.believe
句意“大多数医生相信吸烟有害健康”。the majority of +复数名词作主语,用复数;而根据句意,该句是在说明一个客观事实,应该用一般现在时。
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