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答案：
A
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 
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