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标题: survey is doubtful 问题 [打印本页]

作者: neoflash 时间: 2010-5-18 13:41
标题: survey is doubtful 问题
For example, if only a very small portion of the questionnaires in a survey are correctly filled, the conclusion drawn would be highly doubtful.

请问黑体部分应该用are还是is，另外，这个句子还有没有什么不妥的地方？

谢谢

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