单选题Sleeplessness Insomnia or sleeplessness is a common complaint of women as they enter into menopause. Insomnia means having trouble falling asleep or staying asleep or the feeling that your sleep was not adequate for you. For women who are having night sweats, their sleep is broken by frequent awakening and therefore not refreshing. Generally once the night sweats are controlled a normal sleep pattern returns. If it doesn't it may be, or have become chronic insomnia. How do you know? If you suffer from insomnia every night or most nights for a period of one month then you have chronic insomnia. If you're not having night sweats then it's time to look for other causes of sleeplessness. Depression and anxiety disorders are the most common causes of chronic insomnia. If you feel depressed you need to be checked by a qualified health care provider. Movement disorders such as restless leg syndrome are second on the list of insomnia for them, there are new medicines that may help. Other common causes are shift working, and pain. In up to 30% of people with chronic insomnia no cause can be identified. Medical treatment of these people has generally been with sleeping pills. It is estimated that 25% of the adult population in America took some type of medicines for sleep last year. It is generally agreed that sleeping pills should only be in the lowest dose and for the shortest possible time. Sleep hygiene is directed at changing bad sleep habits. The recommendations are: —Go to bed only when sleepy.—Do not wait up to a specilized time.—Avoid caffeine and alcohol in the evening, etc.

单选题Crystal Ear One day a friend asked my wife Jill if I wanted a hearing aid. "He certainly does, " replied Jill. After hearing about a remarkable new product, Jill finally got up me nerve to ask me if I' dever thought about getting a hearing aid. "No way. "I said. "It would make me look 20 years older. " "No, no, "she replied. "This is entirely different. It's Crystal Ear!" Jill was right. Crystal Ear is different--not the old-styled body worn or over--the—ear aid, but an advanced personal sound system so small that it' s like contacts(隐形眼镜)for your ears. And Crystal Ear is super. sensitive and powerful, too. You will hear sounds your ears have been missing for years. Crystal Ear will make speech louder and the sound is pure and natural. I couldn't believe how tiny it is. It is smaller than the tip of my little finger and it' s almost invisible when worn. There are no wires, no behind—the-ear device. Put it in your ear and Its ready—to wear mold(形状)fits comfortably. Since it's not too loud or too fight, you may even forget that you're wearing it! Use it at work or at play. And if your hearing problem IS worse in certain situations, use Crystal Ear only when you need it. Hearing loss, which occurs typically prior to teenage years, progresses throughout one's lifetime. Although hearing loss is now the world's number one health problem, nearly 90 percent of people suffering hearing loss choose to leave the problem untreated. For many millions, treating hearing loss in a conventional way can involve numerous office visits, expensive testing and adjustments to fit your ear. Thanks to Crystal Ear, the "sound solution"is now convenient. Almost 90 percent of people with mild hearing loss and millions more with just a little hearing drop. off(下降), can be dramatically helped with Crystal Ear. Moreover, its superior design is energy. efficient, so batteries can last months. Crystal Ear is now available to help these people treat their hearing loss with a small. hearing amplifier(放大器).

单选题On Friday, a sociologist from the University of New Hampshire, Murray Straus, presented a paper at the International Conference on Violence, Abuse and Trauma, in San Diego, suggesting that corporal (身体的) punishment does leave a long -lasting mark -in the form of lower IQ. Straus, who is 83 and has been studying corporal punishment since 1969, found that kids who were physically punished had up to a five - point lower IQ score than kids who weren't - the more children were spanked, the lower their IQ--and that the effect could be seen not only in individual children, but across entire nations. Among 32 countries Straus studied, in those where spanking was accepted, the average IQ of the survey population was lower than in nations where spanking was rare, the researcher says. According to Straus, physical punishment leaves a permanent mark on the childA. in the form of a lasting scar on the body.B. in the form of lower IQ.C. in the form of mental disorder.D. in the form of violence inclination.

单选题Many students today display a {{U}}disturbing{{/U}} willingness to choose institutions and careers on the basis of earning potential. A. offensive B. depressive C. troublesome D. tiresome

单选题The expedition reached the {{U}}summit{{/U}} at 10.30 that morning. A.top of the mountain B.bottom of the mountain C.starting point D.site

单选题The works of Walt Whitman had a lasting effect on the development of modern American poetry.

单选题Freud believed in all of the following statements about the wish-fulfilling dream EXCEPT

单选题Did anyone {{U}}call {{/U}}me when 1 was out?

单选题It can be concluded from the passage that more vocational education has to be provided in the future.

单选题Academic records cannot be {{U}}duplicated{{/U}}. A. borrowed B. purchased C. rewritten D. copied

单选题The Spanish Flu Epidemic If you"re worried about the possibility of a coming bird flu epidemic, you can take comfort in the fact that humanity has survived a similar influenza epidemic in the past. Starting its rounds at the end of World War I, the 1918 flu killed an estimated 50 million people. Popularly known as the Spanish Flu, this type of influenza was far worse than your common cold. Normally, influenza only kills those who are more vulnerable to disease, such as newborns, the old or the sick. However, the Spanish Flu was prone to killing the young and healthy. Often it would disable its victims in hours; within a day, they would be dead, typically from extreme cases of pneumonia(肺炎). The Spanish Flu was quite nasty-fast-spreading and deadly. It managed to spread across the globe, devastating the world. Then suddenly, after two years ravaging(蹂躏)the Earth, it disappeared as quickly as it bad arisen. Despite its nickname, the Spanish Flu did not originate in Spain. Its true origins are unknown. Some believe it started in US forts and then spread to Europe as America joined the war; others think that it populated the trenches of the English and the French and eventually broke out in 1918. Regardless of where it started, eventually a fifth of the world population suffered the disease, with a global mortality rate(死亡率) estimated at 2.5% of the population. Modernity was partly to blame for the quick spread of the disease. It passed throughout the world on trade routes and shipping lines. It hit Northern America, Europe, Asia, Africa and the South Pacific. The war did not help at all—the movement of supplies and troops aided the spread of the Spanish Flu, as well as the trench warfare. Imagine the speed at which a virus can spread in a crowded ditch. The fast emergence of the virus in the trenches caused some soldiers to believe that the Spanish Flu was a new form of biological warfare. Luckily, the Spanish Flu simply vanished by 1920. It is believed the flu simply ran out of fuel to spread.

单选题They agreed to {{U}}modify{{/U}} their policy. A. clarify B. change C. define D. develop

单选题1. Mental Retardation Mental retardation is a condition in which people have lower than normal intelligence and are unable to function at the level expected for their age. People with mental retardation are usually born with it, or it develops early in their life. They may also have some difficulty with dally living skills such as learning to read and write and caring for themselves. Doctors and other professionals determine that a person has mental retardation based on their intelligence and how well they can do everyday activities. Intelligence is the ability to learn and understand. Levels of intelligence are measured by special tests called intelligence tests. The score a person gets on one of these tests gives a numerical measure of a person' s intelligence. This is called an intelligence quotient or IQ. An average score on an IQ test is about 90 to 110. A person with mental retardation will usually score below 75 on an IQ test. The IQ test alone does not determine whether someone is mentally retarded. A person must also have trouble with everyday activities such as getting dressed, eating, or washing or learning basic reading, writing, and arithmetic skills. Mental retardation is not a disease itself. It cannot be cured and it's not contagious (传染的). This condition can be caused by several things that injure the brain or don ' t allow the brain to develop normally. Many times we don' t know why a person has mental retardation. Sometimes it may be caused by genes. Genes are chemical units found in every cell. They carry the instructions telling cells what to do. Sometimes, children receive abnormal genes from their parents. A defective gene may also develop spontaneously. Neither parent would have passed on the gene, but the gene changes before the baby develops. Some other problems that can cause mental retardation also happen before a child is born. It is important: for the brain to develop properly if a child is to have normal intelligence. " Planning a pregnancy is the most important decision most of us will make in our lifetime. A healthy lifestyleand good medical care should begin before a woman becomes pregnant and continue throughout the pregnancy, "says Jodi Rucquoi, a genetic counselor from Connecticut. If a woman abuses alcohol or drugs or doesn' t eat well, there is a risk to the developing baby. Also, a premature birth or problems during childbirth can sometimes harm the baby "s developing brain. While premature babies are generally fine, there is a greater chance that they may have mental retardation. In some cases, a young child can develop mental retardation after being sick with a serious infection or other illness, or after suffering a bad head injury.

单选题Quite a few New Yorkers took their mayor's recent advice and got a flu shot.

单选题They tried their best to resolve the residual problems.A. domesticB. remainingC. geographicalD. elaborate

单选题Stone Hill Mall is popular with shoppers mainly because of its

单选题The next morning she told us that the last guests didn't Udepart/U till well after midnight.

单选题Before the invention of photoengraving,steel and copperplate engraving served as the principal means of reproducing illustrations.

单选题Pure feldspar is a colorless, transparent mineral, but impurities {{U}}commonly{{/U}} make it opaque and colorful. A. truly B. rapidly C. periodically D. frequently

单选题 Pool Watch Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are in trouble. The Royal Society for the Prevention of Accidents says that on average 15 people drown in British pools each year, but many more suffer major injury after getting into difficulties. Now a French company has developed an artificial intelligence system called Poseidon that sounds the alarm when it sees someone in danger of drowning. When a swimmer sinks towards the bottom of the pool, the new system sends an alarm signal to a poolside monitoring station and a lifeguard's pager. In trials at a pool in Ancenis, near Nantes, it saved a life within just a few months, says Alistair McQuade, a spokesman for its maker, Poseidon Technologies. Poseidon keeps watching through a network of underwater and overheard video cameras. AI software analyses the images to work out swimmers' trajectories. To do this reliably, it has to tell the difference between a swimmer and the shadow of someone being cast onto the bottom or side of the pool. "The underwater environment is a very dynamic one, with many shadows and reflections dancing around," says McQuade. The software does this by "projecting" a shape in its field of view onto an image of the far wall of the pool. It does the same with an image from another camera viewing the shape from a different angle. If the two projections are in the same position, the shape is identified as a shadow and is ignored. But if they are different, the shape is a swimmer and so the system follows its trajectory. To pick out potential drowning victims, anyone in the water who starts to descend slowly is added to the software's "pre-alert" list, says McQuade. Swimmers who then stay immobile on the pool bottom for 5 seconds or more are considered in danger of drowning. Poseidon double-checks that the image really is of a swimmer, not a shadow, by seeing whether it obscures the pool's floor texture when viewed from overhead. If so, it alerts the lifeguard, showing the swimmer's location on a poolside screen. The first full-scale Poseidon system will be officially opened next week at a pool in High Wycombe, Buckinghamshire. One man who is impressed with the idea is Travor Baytis, inventor of the clockwork radio. Baylis runs a company that installs swimming pools, and he was once an underwater escapologist with a circus. "I say full marks to them if this works and can save lives," he says. But he adds that any local authority spending ￡30,000 plus on a Poseidon system ought to be investing similar amounts in teaching children to swim.