参考答案：D

解析：[听力原文] 36-40 Italian scientists have raised new health concerns about the safety of using mobile phones, with research showing radio waves from the handsets makes cancerous cells grow more aggressively. When Fiorenzo Marinelli and his colleagues at the National Research Council in Bologna exposed leukemia cells in the laboratory to 48 hours of continuous radio waves they initially killed the cancer cells but then made the surviving tumor cells replicate more rapidly. "We don’t know what the effects would be on healthy human cells," Marinelli told New Scientist magazine. In the Italian study, after 24 hours 20 percent more leukemia cells died than healthy cells but longer exposure to the radio waves triggered genes in the surviving cancer cells to divide aggressively. The results of the study do not show any direct threat to human health but they support the belief of some scientists who say radiation can damage DNA and destroy the cell repair system, thus making tumors more deadly. But animal studies, including recent research by Australian scientists at the Institute of Medical and Veterinary Science in Adelaide, have shown that radiation from mobile phones does not trigger the growth of tumors. The WHO (i.e., The World Health Organization) has called for more research into the potential health hazards of mobile phones and has urged people to limit their use of them. A British government inquiry, which concluded that there was no evidence that mobile phones are a danger to health, has advised parents to discourage their children, whose brains are still developing, from using them excessively.

[分析]： 主旨题。 文章首先提出科学家为使用手机而影响人类健康担忧，有数据表明手机辐射会使癌细胞数量激增，虽然研究结果并不表明这对人类健康有直接威胁，但一些科学家认为辐射会损害DNA并摧毁细胞修复系统。尽管权威机构的实验表明辐射并没有引发肿瘤的增长，世界卫生组织还是号召人们注意手机的潜在危险，敦促人们减少对手机的使用。由此可见，D项手机对人类的潜在危险与原文主要观点一致，是正确答案。[解题关键] 将各段中心汇总，找出其主要观点，可得到答案。