2021年自考英语（二）章节习题：Unit11_第2页

　　2、Can Mobile phones Cause Disease?

　　“Mobile phone killed my man.”screamed one headline last year. Also came claims that an unpublished study had found that mobile phones cause memory loss. And a British newspaper devoted its front page to a picture supposedly showing how mobile phones heat the brain.

　　For anyone who uses a mobile phone,these are worrying times. But speak to the scien​tists whose work is the focus of these scares and you will hear a different story. According to them,there is no evidence that mobile phones cause cancer or any other illness in people.

　　What we do have, however, are some results suggesting that mobile phones’emissions have a variety of strange effects on living tissue that can’t be explained by the general radia​tion biology. And it’s only when the questions raised by these experiments are answered that we’ll be able to say for sure what mobile phones might be doing to the head.

　　One of the odd effects comes from the now famous “memory loss” study. Alan Preece and his colleagues at the University of Bristol placed a device that imitated the microwave emissions of mobile phones to the left ear of volunteers. The volunteers were just as good at recalling words and pictures they had been shown on a computer screen whether or not the device was switched on. Preece says he still can,t comment on the effects of using a mobile phone for years on end. But he rules out the suggestion that mobile phones have an immediate effect on our cognitive abilities. "I"m pretty sure there is no effect on short-term memory, "he says.

　　Another expert, Tattersail, remarked that his latest findings, have removed fears about memory loss. One result, for instance, suggests that nerve cell synapses exposed to micro​waves become more―rather than less—receptive to undergoing changes linked to memory formation.

　　Hopefully,microwaves might turn out to be good for you. It sounds crazy, but a couple of years ago a team led by William Adey at the Veterans Medical Center in California found that mice exposed to microwaves for two hours a day were less likely to develop brain tumours when given a cancer-causing chemical.

　　段落对应小标题。

　　1.Paragraph1____.

　　2.Paragraph2____.

　　3.Paragraph3____.

　　4.Paragraph4____.

　　5.Paragraph5____.

　　A.Bad Results

　　B.Widespread Opposition

　　C.Groundless Anxiety

　　D.No Effect on Short-term Memory

　　E.Mysterious Effects

　　F.Further Reassurance

　　参考答案：

　　1.解析为第一段中的关键词killed说明移动电话带来的后果，后面列举了 memory loss(记忆丢失)，heat the brain(热脑)两种危害。可以看出本段主要讲了移动手机带来的不良后果，用A项可以很好地归纳。

　　答案为A

　　2.解析为第二段讲到使用手机会产生焦虑，因为科学家给出了不同的论断：没有证据证明手机会导致癌症或其他疾病。因此这些焦虑是没有依据的。C项中groundless意为没有依据的、无根据的，符合本段主旨。

　　答案为C

　　3 .解析为第三段讲到手机的辐射对活体组织会产生影响，但是只有实验的结果出来后才可以肯定是否对大脑有影响。所以说这些影响都是在“未定”的情况下，用mysterious来概括比较贴切。

　　答案为E

　　4.解析为第四段讲Alan Preece和他的同事所做的实验表明手机有直接影响我们的认知能力，但是可以肯定是没有影响到短期记忆。正好与D项符合。

　　答案为D

　　5.解析为第五段讲到另一位专家的解释，他再次确定了手机不会对短期记忆产生影响，是因为神经细胞的突触在微波的刺激下会对信息记忆变得更加灵敏。所以这是属于对第四段内容的再次肯定(reassurance)。

　　答案为F

　　给下列五道题选择相应正确的选项。

　　6.There is no ________to indicate that mobile phones cause any illness.

　　7.It________that mobile phones might be good for health.

　　8.The safety problem with mobile phones has_______.

　　9.Tattersail said for sure that the______over memory loss caused by mobile phones was ungrounded.

　　10.Until now,there are still________about the mobile phone's effect.

　　A. different messages

　　B. is hoped

　　C. public attention

　　D. solid evidence

　　E. attracted public attention

　　F. public anxiety

　　参考答案：

　　6.解析为第二段最后讲到there is no evidence…cause cancer or any other illness in people。所以D项符合本空。

　　答案为D

　　7.解析为第二段和三段讲了手机对人体和大脑的伤害未得到证实，第四段和五段确定了手机 对短期记忆丧失没有影响，最后一段还用老鼠实验说明微波之下即使使老鼠受到可引发癌症的化学物质的影响，老鼠也不容易得脑瘤。因此本空用B项最符合。

　　答案为B

　　8.解析为文章列举了三位专家(Alan Preece,Tattersail和 William Adey)的言论及其著  名实验，说明手机对人体健康是否有影响已经受到了公众的注意。C项中缺少谓语动词。

　　答案为E

　　9.解析为本题涉及到第五段的内容，第五段中Tattersail暗示了手机辐射并没有对短期记忆产生影响，相反还会有好的作用，因此对这个问题的恐慌是没有依据的。

　　答案为F

　　10.解析为文章通篇介绍了手机辐射的影响，虽然用不同专家的言论证明了手机对人体无害。但是却没有权  威的公布这些信息。因此相信大众对手机是否有害还是半信半疑，所以A 项符合本空。

　　答案为A