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【题目】Qian Xuesen, the father of China’s space program, is generally considered as the greatest s________ in China.

【答案】scientist

【解析】

句意:钱学森,中国太空计划之父,被公认为是中国最伟大的科学家。

句中greatest是形容词great的最高级形式,所以此处使用名词;根据句中“the father of China’s space program”可知,此处使用scientistscientist是名词,意为“科学家”,用在此处表示“钱学森被公认为是中国最伟大的科学家”。故填scientist

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