单选题There are twenty boys all together in that class.A. after allB. above allC. in allD. over all

单选题The view from my bedroom window was absolutely spectacular .

单选题Old and Active It is well-known that life expectancy is longer in Japan than in most other countries. A (51) report also shows that Japan has the longest health expectancy in the world. A healthy long life is the result of the (52) in social environment. Scientists are trying to work (53) exactly what keeps elderly Japanese people so healthy, and whether there is a lesson to be (54) from their lifestyles for the rest of us. Should we (55) any changes to our eating habits, for instance, or go jogging each day before breakfast? Is there some secret (56) in the Japanese diet that is particularly (57) to the human body? Another factor (58) to the rapid population aging in Japan is a decline in birthrate. Although longer life should be celebrated, it is (59) considered a social problem. The number of older people had (60) in the last half century and that has increased pension and medical costs. The country could soon be (61) an economic problem, if there are so many old people to be looked (62) , and relatively few younger people working and paying taxes to support them. (63) the retirement age from 65 to 70 could be one solution to the problem. Work can give the elderly a (64) of responsibility and mission in life. It's important that the elderly play active (65) in the society and live in harmony with all generations.

单选题Drinking three cups of coffee a day

单选题In the latter case the {{U}}outcome{{/U}} can be serious indeed. A. result B. judgement C. decision D. event

单选题The Hammersmith Hospital in West London, home of the Royal Post-graduate Medical School has been the scene(发生地点) of many innovations in medicine. It is now home(中心地,根据地) to the most expensive and ambitious medical technology project ever in Britain, which this year will make the Hammersmith the world's first fully digital hospital. The paper-free office brought about by computerization and modern information technology is familiar to(为……所熟悉) many office workers today. It has taken longer for the same technology to be applied to medical imaging(医学影像学), because of the immense computing power and high cost o the equipment required. But now the Hammersmith is becoming the first hospital in which all imaging data-- X-rays, ultrasonic ,CT and MRI images--are stored not on cumbersome, inflammable films but as digital data on optical discs. The first consequence of this can be seen in the air-conditioned computer room in the new building, where two compact(坚实的,结实的) cabinets each about as tall as a man and 0.6m wide are ready to store every X-ray and scan made at the Hammersmith in the next 16 years on optical discs(光盘). Space saving is the most obvious but not the most important advantage of the digital h6spital. A consultant conducting a clinic with a workstation linked by fibre optics(光纤) to the data store has no need of cumbersome trolleys loaded with patients' X-rays. The new technology considerably reduces the exposure to ionizing (电离的) radiation needed to get pictures doctors need, corresponding to reducing the slight but inevitable health risk that come with repeated X-rays. X-rays record their images on fluorescent(荧光的) plates, lasers read off and store the data and the plates are wiped clean to use again. This requires less radiation than conventional(常规的) imaging. The ability to enhance imaging also reduces the need for extra exposures. Another advantage is that any stored image can be sent to any of the hospital's 138 workstations in four seconds(soon that will come down(降落) to two seconds). Soon it will be possible to send it direct to other hospitals, or to computer screens in GP's(全科医生) clinics. PACS(图像存档通讯系统) is the most expensive single medical technology project ever funded in UK. Most of the money has come from the Department of Health, which has realized that it will benefit patients at the Hammersmith Hospital and those referred from elsewhere, in terms of(按照) better, quicker and safer diagnosis and treatment. Another technique uses radio a belled(用放射性同位素示踪的) white blood cells to guide doctors to the sites of hidden abscesses(脓肿) or other trouble spots. In the most innovative technique of all, interventional(干预的,介入的) radiology, doctors use tiny instruments at the ends of fine catheters(导管), inserted deep into the body under local anaesthetic, to perform a growing amount of microsurgery, viewed by surgeons—and patients if appropriate—in extremely clear detail. Every scrap(碎片,段) of unwanted image is electronically edited off the screen by the computer. The Hammersmith Hospital is also pioneering interventional radiography, in which doctor carry out microsurgery at the same time as they image the patients' organs in minute detail. The blocking or unblocking of arteries to prevent damage due to bleeding or thrombosis(血栓形成) is among the conditions now being treated in this way.

单选题Maine is justly famous for its beautiful lakes and ponds.

单选题How do you account for your absence from the class last Thursday?

单选题Having practiced for so long, he is standing ______ to win the final match.A. a chanceB. a timeC. a minuteD. a while

单选题Young Adults Who Exercise Get Higher IQ Scores Young adults who are fit have a higher IQ and are more (51) to go on to university, reveals a major new study carried out at the Sahlgrenska Academy arid Sahlgrenska University Hospital. The results were recently published in the Proceedings of the National Academy of Sciences (PNAS). The study involved 1.2 million Swedish men doing military service who were born between 1950 and 1976. The research group analyzed the (52) of both physical and IQ tests the youngsters took fight after they started serving the army. The study shows a clear link (53) good physical fitness and better results for the IQ test. The strongest links are for (54) thinking and verbal comprehension. But it is only fitness that plays a (55) in the results for the IQ test, and not strength. "Being fit means that you also have good heart and lung (56) and that your brain gets plenty of (57) ," says Michael Nilsson, professor at the Sahlgrenska Academy and chief physician at the Sahlgrenska University Hospital. "This may be one of the reasons (58) we can see a clear link with fitness, but not with muscular (59) . We are also seeing that there are growth factors that are important." By analysing data for twins, the researchers have been (60) to determine that it is primarily environmental factors and not genes that explain the link between fitness and a (61) IQ. "We have also shown that those youngsters who (62) their physical fitness between ages of 15 and 18 increase their cognitive performance," says Mafia Aberg, researcher at the Sahlgrenska Academy and physician at Aby health centre. "This being the case, physical (63) is a subject that has an important place in schools, and is an absolute must if we want to do well in maths and other theoretical subjects." The researchers have also compared the results from fitness tests (64) national service with the socio-economic status of the men later in (65) . Those who were fit at 18 were more likely to go into higher education, and many secured more qualified jobs.

单选题The Minister was so Uobstinate/U that he wouldn't adjust his opinion.

单选题Guests were scared when the bomb exploded.

单选题You don't have to be dead to donate a kidney, but you had better know the risks before you give it up.

单选题Almost Human? Scientists are racing to build the world's first thinking robot .This is not science fiction: some say they will have made it by the year 2020, Carol Packer reports. Machines that walk, speak and feel are no longer science fiction. Kismet is the name of an android (机器人) which scientists have built at the Massachusetts Institute of Technology (MIT). Kismet is different from the tradition robot because it can show human emotions. Its eyes, Ears and lips move to show when it feels happy, sad or bored. Kismet is one of the first of a new generation of androids-robots that 100k like human beings, which can imitate human feelings. Cog, another android invented by the MIT, imitates the action of a mother. However, scientists admit that so far Cog has the mental ability of a two-year-old. The optimists say that by the year 2020 we will have created humanoids (机器人) with brains similar to those of an adult human being. These robots will be designed to look like people to make them more attractive and easier to sell to the public. What kind of jobs will they do? In the future, robots like Robonaut, a humanoid invented by NASA, will be doing dangerous jobs, like repairing space stations. They will also be doing more and more of the household work for US. In Japan, scientists are designing androids that will entertain US by dancing and playing the piano. Some people worry about what the future holds: will robots become monsters? Will people themselves become increasingly like robots? Experts predict that more and more people will be wearing micro-computers, connected to the Internet, in the future. People will have micro-chips in various parts of their body, which will connect them to a wide variety of gadgets (小装置). Perhaps we should not exaggerate the importance of technology, but one wonders whether, in years to come, we will still be falling in love, and whether we will still feel pain. Who knows?

单选题He was elevated to the post of prime minister.

单选题And the cars are tested for {{U}}defects {{/U}}before leaving the factory

单选题He is said to be suffering from terminal cancer and has asked for euthanasia (安乐死). A. acute B. chronic C. final D. fatal

单选题Reading the job ad, he wondered whether he was eligible to apply for it. A. competitive B. diligent C. qualified D. competent

单选题They scattered after dinner. A. separated B. fled C. departed D. spread

单选题He replied that this was absolutely impossible.