GMAT申友逻辑CR题库-Public health official: Some researchers suspect that magnetic fields from high-voltage power lines can cause health problems for people who-破解版12-真题答案解析

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Public health official: Some researchers suspect that magnetic fields from

high-voltage power lines can cause health problems for people who live especially near the fines. However, this is extremely unlikely: Beyond a distance of a few feet, the strength of the magnetic fields from high-voltage power lines is less than the average strength of magnetic fields in homes that are not located near such lines.

Which of the following would it be most useful to establish in order to evaluate the public health argument?

A. Whether magnetic fields in homes that are not located near high-voltage power lines can cause health problems for the residents of those homes

B. What proportion of people who live near high-voltage power fines believe that those fines may cause health

problems

C. Whether high-voltage power lines are routed near residential in urban areas

D. What specific diseases or conditions are suspected by some researchers to result from exposure to magnetic

fields from high-voltage power lines

E. What is the average strength of magnetic fields in workplaces that are not located near high-voltage power lines

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答案：

健康官员：

一些研究者怀疑高压线磁场影响附近居民健康。然而，这是不可能的，超过几尺距离，高压线磁场强度少于不靠高压线的家庭磁场强度。评价题 A. 是否不靠高压线的家庭磁场强度有害；如果有害，削弱结论；如果无害，增强结论，正确 B. 相信高压线有害的人比例；无关，排 C. 是否高压线接近城市住宅区；无关，排 D. 某些研究者怀疑高压线会导致什么病；主观选项，排 E. 不靠高压线的工作场所磁场强度是多少；跳出范围，排