2. 外语
  3. To succeed in a scientific research project,____.

To succeed in a scientific research project,____.

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问题 To succeed in a scientific research project,____.
选项 A、persistence is needed
B、persistence is what one needs
C、one needs to be persistent
D、one needs be a persistent person
答案C
解析 to succeed in a scientific research project“要取得科研项目的成功”，此为不定式作状语表示目的，因此应选以人作主语的句子C或D，D中的needs为实义动词，后面不能跟原形动词，因此C为正确答案。
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