单选题Questions 1 to 5 are based on the following passage.The market for products designed specifically for older adults could reach $30 billion by next year, and startups 初创公司want in on the action.What th

单选题[此试题无题干]

单选题 His use of color

单选题. All the evil in this world is brought about by persons who are always up and doing, but do not know when they ought to be up nor what they ought to be doing. The devil, I take it, is still the busiest creature in the universe, and I can quite imagine him denouncing (谴责) laziness and becoming angry at the smallest waste of time. In his kingdom, I will bet, nobody is allowed to do nothing, not even for a single afternoon. The world, we all freely admit, is in a mess, but I for one do not think that it is laziness that has brought it to that condition. It is not the active virtues that it lacks but the passive ones; it is capable of anything but kindness and a little steady thought. There is still plenty of energy in the world (there never were more fussy people about), but most of it is simply misdirected. If, for example, in July 1914, when there was some capital idling weather, everybody, emperors, kings, archdukes (大公爵), statesmen, generals, journalists, had been suddenly smitten (迷惑) with an intense desire to do nothing, just to hang about in the sunshine and consume tobacco, then we should all have been much better off than we are now. But no, the doctrine of the strenuous (艰苦的) life still went unchallenged; there must be no time wasted; something must be done. And, as we know, something was done. Again, suppose our statesmen, instead of rushing off to Versailles (凡尔赛宫) with a bundle of ill-digested notions and a great deal of energy to dissipate, had all taken a fortnight off, away from all correspondence and interviews and what not, and had simply lounged about on some hillside or other, apparently doing nothing for the first time in their energetic lives, then they might have gone to their so-called Peace Conference and come away again with their reputations still unsoiled and the affairs of the world in good trim. Even at the present time, if half the politicians in Europe would abandon the notion that laziness is a crime and go away and do nothing for a little space, we should certainly gain by it. Other examples come crowding into the mind. Thus, every now and then, certain religious sects (派别) hold conferences, but though there are evils abroad that are mountains high, though the fate of civilization is still doubtful, the members who attend these conferences spend their time condemning the length of ladies' skirts and the noisiness of dance bands. They would all be better employed lying flat on their backs somewhere, staring at the sky and recovering their mental health.1. In the author's opinion, being busy ______.

单选题. The public must be able to understand the basics of science to make informed decisions. Perhaps the most dramatic example of the negative consequences of poor communication between scientists and the public is the issue of climate change, where a variety of factors, not the least of which is a breakdown in the transmission of fundamental climate data to the general public, has contributed to widespread mistrust and misunderstanding of scientists and their research. The issue of climate change also illustrates how the public acceptance and understanding of science (or the lack of it) can influence governmental decision-making with regard to regulation, science policy and research funding. However, the importance of effective communication with a general audience is not limited to hot issues like climate change. It is also critical for socially charged neuroscience issues such as the genetic basis for a particular behavior, the therapeutic potential of stem cell therapy for neurodegenerative diseases, or the use of animal models, areas where the public understanding of science can also influence policy and funding decisions. Furthermore, with continuing advances in individual genome (基因组) sequencing and the advent of personalized medicine, more non-scientists will need to be comfortable analyzing complex scientific information to make decisions that directly affect their quality of life. Science journalism is the main channel for the popularization of scientific information among the public. Much has been written about how the relationship between scientists and the media can shape the efficient transmission of scientific advances to the public. Good science journalists are specialists in making complex topics accessible to a general audience, while adhering to scientific accuracy. Unfortunately, pieces of science journalism can also oversimplify and generalize their subject material to the point that the basic information conveyed is obscured or at worst, obviously wrong. The impact of a basic discovery on human health can be exaggerated so that the public thinks a miraculous cure is a few months to years away when in reality the significance of the study is far more limited. Even though scientists play a part in transmitting information to journalists and ultimately the public, too often the blame for ineffective communication is placed on the side of the journalists. We believe that at least part of the problem lies in places other than the interaction between scientists and members of the media, and exists because for one thing we underestimate how difficult it is for scientists to communicate effectively with a diversity of audiences, and for another most scientists do not receive formal training in science communication.1. What does the example of climate change serve to show? ______

单选题21. This store has an excellent ______ for fair dealing.

单选题2. Don't let such a ______ matter as this come between us so that we can concentrate on the major issue.

单选题27. Mutual respect for territorial ______ is one of the bases upon which our two countries develop relationships.

单选题[此试题无题干]

单选题New Discoveries of Public TransportAA new study conducted for the World Bank by Murdoch Universitys Institute for Science and Technology PolicyISTPhas demonstrated that public transport is more e

单选题[此试题无题干]

单选题. The amount of floating plastic trapped in a north Atlantic current system hasn't got any bigger in 22 years, despite more and more plastic being thrown away. Since 1986 students taking samples of plankton (浮游生物) in the Atlantic and Caribbean Oceans have also noted when their nets caught plastic litter. Kara Lavender and colleagues at the Sea Education Association in Woods Hole, Massachusetts, analysed the data, and found that of 6,136 samples recorded, more than 60 per cent included pieces of plastic, typically just millimetres across. The areas of highest plastic concentration are within the north Atlantic sub-tropical gyre (环流), where currents gather the litter. Lavender and her team were surprised to find that the amount of floating plastic had not increased in the gyre. Although it has been illegal since the 1970s for ships to throw plastic overboard, Lavender thinks that the overall rate of plastic rubbish reaching the ocean will have increased, given the fivefold increase in global production of plastic since 1976. "Where the extra plastic is going is the big mystery," she says. Plastic resists bio-degradation and can last decades or more in the ocean. Eventually sunlight and wave motion break it into smaller pieces, which can be harmful to marine life—blocking the stomachs of fish and seabirds, for example. Some experts suggest that the plastic might be degrading into pieces small enough to pass through the 0.3-millimetre-mesh nets used in the study, or becoming coated in biofilms and sinking out of range of the nets. However it is unclear why the rate of degradation during the study period should have increased to offset the extra plastic going into the ocean. Lavender says it is unlikely that ocean currents are pushing plastic out of the gyre, although Simon Boxall of the National Oceanography Centre in Southampton, UK, who wasn't involved in the study, disagrees. He says the Atlantic gyre has an exit strategy in the form of the Gulf Stream. "We've seen high levels of plastic in the Arctic." he says. Wherever it is going at the moment, the plastic on our oceans will eventually be broken down into microscopic pieces and individual molecules whose environmental effect is unknown. "The million-dollar question is, is it causing any damage?" says Boxall. "When plastic particles get so small are they just like fibre going through the system? Some studies suggest that persistent chemicals in newer plastics function as endocrine (内分泌) disruptors and simulated hormones." And this fine-grained plastic is very long-lived. "The depressing thing is it's likely to remain in the oceans essentially forever," says Lavender.1. Kara Lavender and her colleagues had analyzed 6,136 samples of ______.

单选题11. Often such arguments have the effect of ______ rather than clarifying the issues involved.

单选题. Questions 20 to 22 are based on the recording you have just heard.5.

单选题. Children who live near a main road are in greater danger of catching pneumonia (肺炎) because pollution from passing traffic damages their lungs. A leading expert in childhood breathing difficulties has made the link between exposure to particles from vehicle exhausts and a child's susceptibility to the chest infection, which can be fatal. Professor Jonathan Grigg, an honorary consultant at the Royal London Hospital and academic paedia-trician (儿科医生) at Queen Mary, University of London, made the breakthrough after studying the effect of airborne pollutants on human lung cells. Children whose home is within 100 metres of a main road could be as much as 65% more likely than others to develop pneumonia, he said. Although the disease is usually associated with the elderly, it is a significant childhood illness. Every year about 20,000 children and young people under 18 end up in hospital after contracting the condition. Children trader 12 months are the most likely to die. Of the 76 young people under 20 who died in 2008, 29 had not reached their first birthday—20 boys and nine girls—and 23 others were between one and four. "The findings strongly suggest that particles pollution is a major factor in making children vulnerable to pneumonia. We've shown a very firm link between the two. The study raises strong suspicions that particles cause pneumonia in children," said Grigg. "This is significant because pneumonia causes many admissions of previously healthy children to hospital." Some children with the disease spend several weeks in intensive care. Previous studies have blamed proximity to a main road for children having higher rates of asthma, coughs, ear, nose and throat infections. A study this month by the Boston-based Health Effects institute claimed that poisonous emissions from vehicles can speed up hardening of blood vessels, as well as worsening lung function. "Strong evidence" suggested that being exposed to traffic fumes can lead to variations in heart rate and other potentially fatal heart complaints, the study said. Exposure to the burning of wood or coal, or to tobacco smoke, can also increase a child's chances of pneumonia. One study found that secondhand smoke was to blame for 28.7% of all children under five in Vietnam who were admitted to hospital with the condition. Professor Steve Field, chairman of the Royal College of GPs, said: "We have known for some time that pollution causes chest problems, such as asthma, in both children and adults. This new research adds to the weight of evidence about the problems of air pollution, especially from cars, buses and lorries." The research underlined the need for Britain to move towards greener forms of transport in order to protect public health from traffic fumes, he suggested.1. What is taken as fatal by Professor Jonathan Grigg? ______

单选题 He soon received promotion