Thirdly, the fact that the nearby city has a weakening economy does not prove that the city will not contribute significantly to tax revenues. Perhaps tax revenues are based on property taxes, which are not related directly to economic conditions. If so, and if property values and taxes are high in this nearby city, then the city would contribute significantly to tax revenues, and the bridge would be important to maintain those property values and the revenues they generate.

　　Finally, the author assumes that a city should receive government services commensurate with the tax dollars it contributes. Substantiating this assumption requires examining the proper duty of government. However, the author provides no such examination. Accordingly, this assumption is simply an unproven claim.

　　In conclusion, this editorial fails to substantiate its claim that the Styx River Bridge is not important enough for the government to spend tax dollars to maintain and repair it. To strengthen the argument, the author must account for other factors that also determine a bridges importance, and must compare the importance of this bridge relative to other bridges.

　　小编提醒：考生们可在日常生活中多读范文，多练笔，培养出好的语感和逻辑，这样才能在考试中写出优秀的作文。

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