【GMAT考满分逻辑CR题库】Columnist: The Hoopton municipal water treatmen_真题_答案

题目内容

Columnist: The Hoopton municipal water treatment plant recently discovered a major problem with the adsorptive medium used in its treatment process. This medium helps remove iron and manganese from drinking water, but during the time that this part of the treatment process was not functional, residents suffered no adverse health effects. The insignificant outcome of this supposed disaster suggests that the presence of these minerals in drinking water is not as detrimental as watchdog groups would have us believe.

Which of the following, if true, would most seriously weaken the columnist’s argument?

A
No residents have fallen ill in other municipalities with similar problems with their adsorptive media.
分析该选项
B
The potassium permanganate added in a later step in the treatment process removes most of the iron and manganese from the water supply.
分析该选项
C
Because the municipal treatment plant is so small, it was exempted from disinfection requirements after meeting certain strict criteria.
分析该选项
D
The Commission of Environmental Quality is responsible for ensuring that the treatment processes in all municipal facilities are fully operational.
分析该选项
E
Because it was summer, most residents of Hoopton were away on vacation when the malfunction occurred.
分析该选项

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正确答案: B

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