单选题This car has been______trouble; it" s always breaking down.

单选题His tick convinced none but the most ______. A. credulous B. plausible C. trustworthy D. feasible

单选题Only by diligence and honesty

单选题With respect to treating chronic Lyme, ______.

单选题They already guide blind and disabled people; now dogs are to be trained to help people with dementia (痴呆). The duties of these "guide dogs for the mind" will include reminding their owners to take medication, as well as encouraging them to eat, drink and sleep at regular intervals. The dementia dogs will be trained to respond to sound triggers in the home that prompt them to perform tasks. These could include delivering a bite-proof bag of medicine with a note inside reminding the patient to take it, or waking them up in the morning. The idea was developed by design students at the Glasgow School of Art and will now be put into practice by Alzheimer"s Scotland and Dogs for the disabled. Joyce Gray of Alzheimer"s Scotland said: "People in the early stages of dementia are still able to live a relatively normal life, and dogs help to maintain routine." The other advantage of using the pets as companions is that conversation can be increasingly confusing for people with Alzheimer"s, but dogs can give them a sense of silent support and companionship. People light up when they see animals. They don"t need to communicate verbally but they can still interact. You can have a speechless bond. The dog would also encourage the owner to take them out for walks, ensuring they keep exercising and interacting with other people.

单选题Despite increased airport security since September 11th, 2001, the technology to scan both passengers and baggage for weapons and bombs remains largely unchanged. Travellers walk through metal detectors and carry-on bags pass through x-ray machines that superimpose colour-coded highlights, but do little else. Checked-in luggage is screened by "computed tomography", which peers inside a suitcase rather like a CAT scan of a brain. These systems can alert an operator to something suspicious, but they cannot tell what it is. More sophisticated screening technologies are emerging, albeit slowly. There are three main approaches: enhanced x-rays to spot hidden objects, sensor technology to sniff dangerous chemicals, and radio frequencies that can identify liquids and solids. A number of manufacturers are using "reflective" or "backscatter" x-rays that can be calibrated to see objects through clothing. They can spot things that a metal detector may not, such as a ceramic knife or plastic explosives. But some people think they can reveal too much. In America, civil-liberties groups have stalled the introduction of such equipment, arguing that it is too intrusive. To protect travellers' modesty, filters have been created to blur genital areas. Machines that can detect minute traces of explosive are also being tested. Passengers walk through a machine that blows a burst of air, intended to dislodge molecules of substances on a person's body and clothes. The air is sucked into a filter, which instantaneously analyses it to see whether it includes any suspect substances. The process can work for baggage as well. It is a vast improvement on today's method, whereby carry-on items are occasionally swabbed and screened for traces of explosives. Because this is a manual operation, only a small share of bags are examined this way. The most radical of the new approaches uses "quadrupole resonance technology". This involves bombarding an object with radio waves. By reading the returning signals, the machines can identify the molecular structure of the materials it contains. Since every compound--solid, liquid or gas--creates a unique frequency, it can be read like a fingerprint. The system can be used to look for drugs as well as explosives. For these technologies to make the jump from development labs and small trials to full deployment at airports they must be available at a price that airports are prepared to pay. They must also be easy to use, take up little space and provide quick results, says Chris Yates, a security expert with Jane's Airport Review. Norman Shanks, an airport security expert, says adding the new technologies costs around $ 100 000 per machine; he expects the systems to be rolled out commercially over the next 12 months. They might close off one route to destroying an airliner, but a cruel certainty is that terrorists will try to find others.

单选题 平遥古城 平遥古城是一座具有二千七百年历史的文化古城，是中国目前保存最为完整的明清时期古县城原型(prototype)。自16世纪起，平遥就是中国北方具有战略意义的商业重镇。到19世纪中叶，平遥古城极其繁荣并且成为了近代中国金融业的中心。平遥古城对研究中国古城的变迁、城市建筑的发展及人们的居住方式具有重要的价值。

单选题Alice, one of the 13 women extras, was probably playing the role of____.

单选题At eight oclock, the bell________ and all the children ran into the classroom

单选题If the test taker finds an item to which an answer is not known, it may be ______ to leave it blank and go on with the test.

单选题The factory ______ 20,000 bicycles a month.

单选题Son: How about going out for lunch, dad? Father:______.

单选题He had a ______ and rushed out of the kitchen just before an explosion wrecked it.

单选题The traditional approach ______ with complex problems is to break them down into smaller, more easily managed problems. A. to dealing B. in dealing C. dealing D. to deal

单选题A dispute that. according to Members of Parliament (MPs), threatens the very survival of London Metropolitan University (London Met), the capital"s biggest higher education institution, is spilling over onto London"s streets. Last week lorry drivers on Holloway Road in Islington watched as a group of students and staff marched in protest against a meeting of London Met"s governors. "Save our Staff" and "London Met on the Roper." a reference to the university"s vice-chancellor, Professor Brian Roper, screamed the banners. The university, which has 34,000 students, has long attracted controversy for the militancy of its staff and students, but the latest row is a more serious matter. This crisis is over an attempt by the Higher Education Funding Council (Hefc) to claw back more than ￡50m that London Met should not have received. It is believed that as many as 500 jobs could go as a result of the university having been overpaid for student dropouts since 2005, and the unions are furious, claiming at the same time that the university is being unfairly treated by Hefc but that neither the managers nor the governors have explored the alternatives to job cuts. "The University and College Union (UCU) is very concerned that the Hefc regulations appear to discriminate against widening participation," said a UCU spokesperson. "But we also feel very strongly about the fact that the management are not consulting the unions as they are required to do in law and that they have not considered alternatives like a freeze on new appointments." One of the issues in dispute is whether students who did not take their assessments at the end of the year but were intending to take them the following year should be classified as drop-outs. Hefc considers them to have dropped out and says that its funding definitions apply to all universities regardless; UCU believes they should not be classified in this way on the grounds that they need all the help they can" get to complete the course. The dispute has also hit the House of Commons. An early day motion signed by MPs says that the scale of the cuts—an 18m reduction in teaching budgets and 38m in claw-backs for previous years—"throws the future operability of the university into doubt at a time when education and training are vital to the capital"s economic health."

单选题The purpose of the author in writing the text is to

单选题Since the early 19~0s,Swiss banks had prided themselves ______ their system of banking secrecy and numbered accounts.

单选题Beer is the most popular drink among male drinkers, ______ overall consumption is significantly higher than that of women. A. whose B. which C. that D. what

单选题11. It gives US much pleasure to send you the goods asked for in your letter of September 10.