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经典真题300篇 -8949【medium】 00:00:00 关闭计时
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The traditional color of fire trucks is red, but in cities that have introduced yellow trucks into their  fleets, the rate of traffic accidents per mile driven among these trucks has been far lower than the  rate among red trucks. Some critics of the innovation have questioned whether this difference  should be attributed to color, given that the yellow trucks were generally newer than the red trucks with which they were compared. But this criticism can be dismissed. Certainly, the mere  difference in accident rates is not decisive evidence. The decisive fact is that the rates differed  significantly only in the hours around dawn and dusk. At these hours, the visibility of yellow is  known to be better than that of red. 

In the argument given, the two highlighted portions play which of the following roles?

正确答案: E 耗时:
该题平均耗时:2分45秒 ,平均正确率:61 %。 该题由网友lgw20422提供。更多GRE题目请 点击上传

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  • 当前版本由371524c更新于2020-04-22 16:28:29 感谢由371524c对此题目的解答所做出的贡献。

    答案:E。高亮句作用题。 

    第一个句子,“this difference should be attributed to color,”是作者在文中试图defend的观点,最后一句再次说了,在黎明和黄昏几个小时内,黄色的能见度的确更好。第二个句子,“the mere difference in accident rates is not decisive evidence.

    ”是作者做出的一个让步。因此E是最佳选项。

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托福 gre gmat保分一次过 价格亲民 WeChat: xichengliuxue
1楼  | 2020-09-08 11:35:31 回复
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