正确答案: A

is costly to the police

题目：It can be inferred from Paragraph 5 that DNA fingerprinting _________．

解析：从第五段可以推断出DNA指纹_________A．对警察来说成本昂贵 B．可能是一个社会争议的问题C．是证明清白的唯一方式 D．是个获利的行业 【解 析】推断题。第五段首句就提到DNA指纹颇为昂贵，接着又举例论证这种昂贵情况带来的某种后果，故A是正确答案。

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[单选题]The author is most concerned with the possibility that after a few decades__________．

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__________.

most human interactions can be easily monitored

解析：【答案】D【解析】本题的要点在原文第二段“but”之后。前面说的是作者认为会影响到新技术的一些因素，在but之后，提出了自己真正关心的话题：“人们之间的大多数交往可能轻易就会受到监视。”所以，D为正确答案。应注意的是，C选项虽然和原文一致，但不是作者最关心的问题。

[单选题]Which of the following statements is true according to the passage?

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__________.

Walking was the only recreational activity for about half of the women

解析：【答案】B【解析】根据第三段“Of the women，47％said walking was their only recreational activity．Those who walked for at least seven hourS per week had a 1 4％lower risk of breast cancer compared to those who walked three or fewer hours per week…”可知B选项正确，即散步是大约一半的妇女的唯一的休闲活动。

[单选题]She has proved that she can be railed on in a crisis.

depended on

[单选题]请在第_____处填上正确答案。

根据以下资料，回答下面的题目。 请在第_____处填上正确答案。

Thus

解析：最后一句是是对前文的一个总结和结果陈述，所以选thus，表示因此。still意为“仍然，尽管如此”，有转折的意味；however做连词意为“然而，但是”，是表示转折的常用连词；moreover意为“此外，而且”，表示更一步的说明或者补充。因此本题选D。

[单选题]The last few weeks have been enjoyable

past