【正文】 tudy? ________ D Mobile phone radiation kills blood cells at a rapid speed.37 B Mobile phone radiation can shrink the blood vessels and prevent blood from flowing smoothly. A Mobile phone radiation can increase protein activities and such activities can make the According to Leszczynski, how does mobile phone affect one39。 Where the truth is do not know, he said. These are not lifethreatening problems but can cause a lot of disfort, he said, adding that a Swedish group had also suggested a possible link with Alzheimer39。 Increased protein activity might cause ceils to shrinknot the blood |vessels hut the cells themselvesand then tiny gaps could appear between those cells through which some molecules could pass. he said. The study focused on changes in cells that line blood vessels and on whether such changes could weaken the functioning of the bloodbrain barrier, which prevents potentially harmful substances from entering the brain from the bloodstream. 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 brain39。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. But Darius Leszczynski, who headed the 2year 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. 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. D a new finding by British scientists B the kind of infection that causes childhood leukaemia This passage is mainly about ________. C private pany A medical journal D Children born in a large town are at higher risk of leukaemia.34 B Population mixing best explains the cause of childhood leukaemia. According to the passage, which of the following is true? ________C Population mixing is the most important reason for leukaemia cluster. A Radiation has contributed to the disease. Which statement can be supported by Heather Dickinson and Louise Parker39。 C Louise Parker. A Leo Kinlen. Their paper adds crucial weight to the l988 theory put forward by Leo Kinlen, a cancer epidemiologist at Oxford University, who said that exposure to a mon unidentified infection through population mixing resulted in the disease.31 British cancer researchers have found that childhood leukaemia is caused by an infection and clusters of cases around industrial sites are the result of population mixing that increases exposure. The research published in the British Journal of Cancer backs up a 1988 theory that some as yet unidentified infection caused leukaemianot the environmental factors widely blamed for the disease. 下面有3篇短文，每篇短文后有5道題，每題后面有4個選項。an opportunity to analyze different forms of thinkingthe meaning of ining sensory informationE the most plex areas of our cortexC a stranger39。The way we stereotype people is a less mature form of thinking, which is similar to ________.30Sensory information is one that is perceived through ________.28 Threatening Aspect of First ImpressionsF Illustration of First ImpressionD Ways of Departure from Immature and Simplistic ImpressionsB Paragraph 5 ________Paragraph 3 ________25 s character, we use a different, more mature style of thinkingand the most plex areas of our cortex, which allow us to be humane.23 When we stereotype people, we use a less mature form of thinking (not unlike the immature thinking of a very young child) that makes simplistic and categorical impressions of others. Rather than learn about the depth and breadth of people—their history, interest, values, strengths, and true character—we categorize them as jocks, geeks, or freaks.5 m intrigued. Or your brain may perceive a new face but familiar clothes, ethnicity, gestures—like your other friends。If you see someone you know and like at school, your brain says familiar and safe. If you see someone new, it says, new—potentially threatening. Then your brain starts to match features of this stranger with other known memories. The height, weight, dress, ethnicity, gestures, and tone of voice are all matched up. The more unfamiliar the characteristies, the more your brain may say, This is new. 1 don39。The answer is related to how your brain allows you to be aware of the world. Your brain is so sensitive in picking up facial traits, even very minor difference in how a person39。1請將答案涂在答題卡相應(yīng)的位置上。第3部分：概括大意與完成句子（第23～30題，每題l分，共8分） C B A Not mentioned22 WrongRightThe middle classes drink bottled water because water pipes rarely ex