You do have to complete a short survey, but it's not too painful.

你必须完成一个简短的调查，但不是太痛苦。

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Our goal is not to create the illusion of a complete survey of media change in the West over the past two thousand years an impossible, and thankless, assignment!

课程基本上按年代顺序进行，目的不是要建立全面检视两千年来西方媒体改变的假像(这任务是不可能，也不讨好！)

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For example, the U.S. Geological Survey does not have complete groundwater mapping data and, at current funding levels, may not obtain it for decades.

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John Warner, R-Virginia, noted that the survey group's work was not complete.

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Not only were Zs more likely to complete the survey but they did so more quickly than did the As.

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