【名词&注释】
新技术(new technology)、休闲活动(leisure activities)、大多数(most)
[单选题]It can be inferred from Paragraph 5 that DNA fingerprinting _________．
根据下列材料，回答下面的题目DNA Fingerprinting DNA is the genetic material found within the cell nucleus of all living things．In mammals the strands of DNA are grouped into structures called chromosomes．With the exception of identical siblings(as in identical twins)，the complete DNA of each individual is unique． DNA fingerprinting is sometimes called DNA typing．It is a method of identification that compares bits of DNA．A DAN fingerprint is constructed by first drawing out a DNA sample from body tissue or fluid such as hair，blood，or saliva．The sample is then segmented using enzymes，and the segments are arranged by size．The segments are marked with probes and exposed on X—ray film，where they form a pattern of black bars—the DNA fingerprint．If the DNA fingerprints produced from two different samples match，the two samples probably came from the same person． DNA fingerprinting was first developed as all identification technique in 1985．Originally used to detect the presence of genetic diseases，it soon came to be used in criminal investigations and legal affairs．The first criminal conviction based on DNA evidence in the United States occurred in l988．In criminal investigations，DNA fingerprints derived from evidence collected at the crime scene are compared to the DNA fingerprints of suspects．Generally，coups have accepted the reliability of DNA testing and admitted DNA test results into evidence．However，DNA fingerprinting is controversial in a number of areas：the accuracy of the results，the cost oftestin9，and the possible misuse of the technique． The accuracy of DNA fingerprinting has been challenged for several reasons．First，because DNA segments rather than complete DNA strands are “fingerprinted”；a DNA fingerprint may not be unique；large—scale research to confirm the uniqueness of DNA fingerprinting test results has not been conducted．In addition，DNA fingerprinting is often done in private laboratories that may not follow uniform testing standards and quality controls．Also，since human beings must interpret the test，human error could lead to false results． DNA fingerprinting is expensive．Suspects who are unable to provide their own DNA to experts may not be able to successfully defend themselves against charges based on DNA evidence． Widespread use of DNA testing for identification purposes may lead to the establishment of a DNA fingerprint database． If two sisters are identical twins．their complete DNAs are _________．
A. is costly to the police
B. could be a social issue
C. 1s the only way to prove innocence
D. has been a profitable business
阅读材料，回答下面的题目。The New Technology ApplicationOn a more mundane level, third-generation mobile telephones, despite all the delays and the billions squandered on 3G licenses by telecom firms, are still expected to offer consumers high-speed, always on mobile internet access, complete with video, in the next few years.Rapidly proliferating "WiFi" networks already offer wireless access on a local basis. Tiny tracking chips called radio-frequency identification devices are being used as pet passports.Soon they will be small, powerful and cheap enough to be implanted into everything form humans to milkcartons recording and transmitting real-time medical data, or serving as a form of inventory control.Sensors of every kind, including video cameras, should also become much smaller and cheaper.Forrester Research, a technology consultancy, predicts that 14 billion such devices will be connected to the internet by 2005.How rapidly such new technology is introduced will depend on a number of factors the state of the economy, the supply of investment capital and the appetite of consumers for new products or services ! Fortunes will be made and lost many times over.But whatever happens, the power of computing and communications look set to continue to grow, and its price to fall, at a steady rate for the next few decades.That will make it possible, at least in rich countries, to record most human interactions, wherever and whenever they take place, and to store and analyze this ocean of data at low cost.For the sake of argument, this survey will assume that we are heading towards a networked society of ubiquitous, mobile Communication capable of constant monitoring.Whether this arrives in 20,30 or 40 years does not really matter.The point is that the destination seems not merely possible, but probable, so it is not toosoon to ask: What do we want this technology to do?The internet has already thrown up a host of legal and political conundrums, but, these are only a small foretaste of the dilemmas about privacy, security, intellectual property and the nature of government itself that will have to be faced over the coming decades.The debate has already begun. This survey will outline some of main issues, and speculate on the way they are likely to go. Radio-frequency identification devices__________.
阅读材料，回答下面的题目。A New Strategy to Overcome Breast CancerPost-menopausal ( 绝经后 ) women who walk for an hour a day can cut their chance of breast cancer significantly,a study has suggested. The report, which followed 73,000 women for 17 years, found walking for at least seven hours a week lowered the risk of the disease. The American Cancer Society team said this was the first time reduced risk was specifically linked to walking. UK experts said it was more evidence that lifestyle influenced cancer risk. A recent poll for the charity Ramblers a quarter of adults walk for no more than an hour a week, but being active is known to reduce the risk of a number of cancers. This study, published in Cancer Epidemiology,Biomarkers&Prevention, followed 73.615 women out of 97,785 aged 50-74 who had been recruited by the American Cancer Society between 1992 and 1993,so it could monitor the incidence of cancer in the group. They were asked to complete questionnaires on their health and on how much time they were active and participating in activities such as walking, swimming and aerobics ( 有氧运动) and how much time they spent sitting watching television or reading. They completed the same questionnaires at two-year intervals between 1997 and 2009. Of the women, 47% said walking was their only recreational activity. Those who walked for at least seven hours per week had a 14% lower risk of breast cancer compared to those who walked three or fewer hours per week. Dr. Alpa Patel, a senior epidemiologist at the American Cancer Society in Atlanta, Georgia, who led the study, said: "Given that more than 60% of women report some daily walking, promoting walking as a healthy leisure-time activity could be an effective strategy for increasing physical activity amongst post-menopausal women. We were pleased to find that without any other recreational activity, just walking one hour a day was associated with a lower risk of breast cancer in these women." "More strenuous ( 紧张的) and longeractivities lowered the risk even more." Baroness Delyth Morgan, chief executive of Breast Cancer Campaign, said: "This study adds further evidence that our lifestyle choices can play a part in influencing the risk of breast cancer and even small changes incorporate into our normal day-to-day activity can make a difference."She added: "We know that the best weapon to overcoming breast cancer is the ability to stop it occurring in the first place. The challenge now is how we turn these findings into action and identify other sustainable lifestyle changes that will help us prevent breast cancer."All of the following factors relating to cancer risk were mentioned in the EXCEPT__________.
根据以下资料，回答下面的题目。 请在第_____处填上正确答案。
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