2014年职称英语考试理工类A级模拟题:阅读理解

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　　第四部分：阅读理解(每题3分，共45分)

　　短文后有5道题，每题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题，从4个选项中选择1个最佳答案涂在答题卡相应的位置上。

　　Mobile Phone and Diseases

　　A study by scientists in Finland has found that mobile phone radiation can cause changes in human cells that might affect the brain, the leader of the research team said.

　　But Darius Leszczynski, who headed the 2-year study and will present findings next week at a conference in Quebec(魁北克), said more research was needed to determine the seriousness of the changes and their impact on the brain or the body.

　　The study at Finland's Radiation and Nuclear Safety Authority found that exposure to radiation from mobile phones can cause increased activity in hundreds of proteins in human cells grown in a laboratory, he said.

　　“We know that there is some biological response. We can detect it with our very sensitive approaches, but we do not know whether it can have any physiological effects on the human brain or human body,” Leszczynski said.

　　Nonetheless the study, the initial findings of which were published last month in the scientific journal Differentiation, raises new questions about whether mobile phone radiation can weaken the brain's protective shield against harmful substances.

　　The study focused on changes in cells that line blood vessels and on whether such changes could weaken the functioning of the blood-brain barrier, which prevents potentially harmful substances from entering the brain from the bloodstream, Leszczynski said.

　　The study found that a protein called hsp27 linked to the functioning of the blood-brain barrier showed increased activity due to irradiation and pointed to a possibility that such activity could make the shield more permeable(能透过的), he said.

　　“Increased protein activity might cause cells to shrink―not the blood vessels but the cells themselves―and then tiny gaps could appear between those cells through which some molecules could pass. ” he said.

　　Leszczynski declined to speculate on what kind of health risks that could pose, but said a French study indicated that headache, fatigue and sleep disorders could result.

　　“These are not life-threatening problems but can cause a lot of discomfort,” he said, adding that a Swedish group had also suggested a possible link with Alzheimer's disease.

　　“Where the truth is do not know,” he said.

　　Leszczynski said that he, his wife and children use mobile phones, and he said that he did not think his study suggested any need for new restrictions on mobile phone use.

　　36　According to Leszczynski, how does mobile phone affect one's health? _________

　　A　Mobile phone radiation can increase protein activities and such activities can make the protective shield more permeable.

　　B　Mobile phone radiation can shrink the blood vessels and prevent blood from flowing smoothly.

　　C　Mobile phone radiation will bring stress to people exposed to it.

　　D　Mobile phone radiation kills blood cells at a rapid speed.

　　37　What's the result of the French study? _________

　　A　The harm of mobile phone radiation is life-threatening.

　　B　Mobile phone may affect one's normal way of thinking.

　　C　Sleep disorders could result from mobile phone radiation.

　　D　A protein called hsp27 is killed by mobile phone radiation.

　　38　What kind of disease is not caused by the use of mobile phone? _________

　　A　Fatigue.

　　B　Headache.

　　C　Alzheimer's disease.

　　D　Tuberculosis.

　　39　According to the passage, what would be the future of the use of mobile phone? _________

　　A　People will be forbidden to use mobile phone.

　　B　People dare not use mobile phone because of its radiation.

　　C　People will continue to use mobile phone.

　　D　There will be new restrictions on the use of mobile phone.

　　40　Which of the following is NOT true according to the passage? _________

　　A　The research in Finland found that mobile phone radiation will affect one's brain.

　　B　Mobile phone radiation can cause increased activity in hundreds of protein in human cells.

　　C　Increased protein activity might cause cells to shrink.

　　D　Lszczynski forbid his wife and children to use mobile phone after his research.

　　参考答案：

　　36　A文章论述的是手机导致人体细胞变化，所以从“The study found that a protein called hsp27 linked to the functioning of the blood―brain barrier showed increased activity due to irradiation and pointed to a possibility that such activity could make the shield more permeable(能透过的)”可以判断答案是A。

　　37　C从倒数第三段的末尾句可以看出，法国的研究成果是手机辐射是失眠、头痛等毛病的原因。选项中提到的是其中一条。

　　38　D从文章内容上看，手机导致的疾病有好几种，但都是与头脑有关。用排除法可排除Tu―berculosis。

　　39　C从最后研究人员的几句话可以判断手机影响程度到底如何还不知道，而且提到研究人员自己以及其家人还在用手机，可推测手机的使用不会因为这些还不确切的科学发现而停止。

　　40　D此题用排除法比较容易解决。文章最后提到Leszczynski自己、家人都在用手机，没有任何迹象表明他禁止他们用手机，所以答案是D。