单选题Many cities have restricted smoking in public places. A. limited B. allowed C. stopped D. kept

单选题By the end of the game, the stadium was almost vacant. A. empty B. excited C. full D. silent

单选题A research center has been{{U}} set up{{/U}} in this country

单选题It is said that the houses along this street will soon be pulled down .

单选题The most {{U}}pressing{{/U}} problem any economic system faces is how to use its scarce resources.

单选题{{B}}第三篇{{/B}} Wayne Beno "Wayne Beno was a true outdoorsman. Fishing, boating, hunting, walking through the woods with his three dogs, Wayne loved and did it all. Then life changed dramatically. Wayne was diagnosed with Parkinson's disease (帕金森氏病). "For the next thirteen years I took 28 pills a day, had horrible side effects, and even with all those pills I still had lots of shaking and tremors(颤抖). I only went out during peak times, when I was looking and feeling my best. But that wasn't often and I really couldn't do much of anything. I felt like the fife I loved was over," said Wayne. Then Wayne's doctor in Green Bay suggested he consider a breakthrough surgical option being offered at Froedtert the Medical College of Wisconsin. His friend's experience convinced Wayne that the 180-mile trip from his home in Crivitz, Wisconsin could be well worth the effort. And was it ever. "It was the best thing I ever did. I'm down to zero pills a day and I don't shake at all," reports Wayne. "Before the surgery, I felt bad every single day. Now I feel like my old self. I'm back to business as usual, which for me means fishing, fishing, and more fishing, every day of the year. Things just couldn't be any better!"

单选题What Is Anthrax (炭疽)? There"s been a lot of talk about anthrax on the news lately. Some people are worried that anthrax may be connected to terrorist attacks or that terrorists may spread the germ that 1 the disease. Federal officials and police are investigating this and taking 2 to protect us. In the meantime, it"s important not to panic over anthrax. The chances that you and your family 3 at risk are very tiny. One of the ways you can feel better is to learn about anthrax. When you know what it is and 4 you can get it, it doesn"t seem quite as scary. So, what 5 is anthrax? Here are the facts on anthrax: Anthrax is a bacterial infection caused by a germ. Although it"s most common in farm 6 , like sheep, cows, pigs, horses, and goats, there"s a very small chance that people can get it, too. Anthrax spores (孢子) (a version of the germ in a protective shell that can live in the soil for years) cause the disease. People may get anthrax if they are exposed to anthrax 7 . But here"s the important part: just being exposed to these spores doesn"t mean that a person will get 8 . For a person to get sick, he would have to breathe in thousands of these spores all the way into his 9 . Or he"d have to eat meat contaminated with anthrax or handle 10 that has anthrax spores. This may sound scary, but even when a person comes 11 contact with the spores, it"s unlikely that he"ll get sick. 12 the bacteria do not get into the skin, digestive tract, or lung, the disease won"t develop. Anthrax is not spread from person to person the way the flu can spread from family member to 13 member or classmate to classmate. Anthrax can almost always be successfully treated with antibiotics (抗生素). Anthrax is very rare. Until recently anthrax wasn"t even talked about because it was so rare — and it still 14 ! Even with all of the anthrax cases you are hearing about right now, a person"s chances of getting anthrax are about the 15 as they were before you heard about anthrax on the news — very, very low.

单选题{{B}}第二篇{{/B}} {{B}}Sleeplessness{{/B}} 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 specified time. —Avoid caffeine and alcohol in the evening, etc.

单选题We can no longer put up with his actions.A. bearB. acceptC. supportD. oppose

单选题The train came to an abrupt stop.

单选题Hack The first big-name hackers include Steve Wozniak, Bill Gates and Linus Torvalds, all now highly recognizable names behind many of the computer technologies used today. These early hackers had a love of technology and a compelling need to know how it all worked, and their goal was to push programs beyond what they were designed to do. Back then, the word "hacker" didn"t have the negative connotation it has today. The original hacker ethic, rooted out of simple curiosity and a need to be challenged, appears to be dead. The objectives of early hackers are a far cry from the goals of today"s hacker. The motivation of the new breed of hackers appears not to be curiosity, or a hunger for knowledge, as it used to be. Instead, most of today"s hackers are driven by greed, power, revenge, or some other malicious intent, treating hacking as a game or sport, employing the tools that are readily available via the Internet. The rate of security attacks is actually outpacing the growth of the Internet. This means that something besides the growth of the Internet is driving the rise in security attacks. Here are some realities you should know about: Operating systems and applications will never be secure. New vulnerabilities will be introduced into your environment every day. And even if you ever do get one operating system secure, there will be new operating systems with new vulnerabilities—phones, wireless devices, and network appliances. Employees will never keep up with security polices and awareness. It doesn"t matter how much you train and educate your employees. If your employees disregard warnings about the hazards of opening questionable e-mail attachments, how are you going to educate them about properly configuring fire-walls and intrusion detection systems for their PCs? Managers have more responsibility than ever. And on top of the realities listed above, security managers are being asked to support increasing degrees of network availability and access. There are some good security measures you can take: Employ a layer 7, full-inspection firewall. Automatically update your anti-virus at the gateway, server and client. Keep all of your systems and applications updated. Hackers commonly break into a Web site through known security holes, so make sure your servers and applications are patched and up to date. Turn off unnecessary network services. Eliminate all unneeded programs. Scan network for common backdoor services—use intrusion detection systems, vulnerability scans, antivirus protection.

单选题Virtually all the children come to school by bus.

单选题First aid may bring about all the following results EXCEPT

单选题The index is the government"s chief gauge of future economic activity.

单选题There are a {{U}}limited{{/U}} number of books on this subject in the library．

单选题 The Doctor in America Self-employed private physicians who charge a fee for each patient visit have been the norm for American medical practice. Most physicians have a contract relationship with one or more hospitals in their community. They refer their patients as needed to the hospital, which usually charges according to the number of days a patient stays and the facilities—X-rays, operating rooms, tests—he or she uses. Some medical doctors are on salary. Salaried physicians may work as hospital staff members, or residents, who are often still in training. They may teach in medical schools, be hired by corporations to care for their workers or work for the federal government's Public Health Service. Physicians are among the best-paid professionals in the United States. In the 1980s, it was not uncommon for medical doctors to earn incomes of more than $100,000 a year. Specialists, particularly surgeons, might earn several times that amount. Physicians list many reasons why they deserve to be so well rewarded for their work. One reason is the long and expensive preparation required to become a physician in the United States. Most would-be physicians first attend college for four years, which can cost nearly $20,000 a year at one of the best private institutions. Prospective physicians then attend medical school for four years. Tuition alone can exceed $10,000 a year. By the time they have obtained their medical degrees, many young physicians are deeply in debt. They still face three to five years of residency (住院医生实习期) in a hospital, the first year as an apprentice physician. The hours are long and the pay is relatively low. Setting up a medical practice is expensive, too. Sometimes several physicians will decide to establish a group practice, so they can share the expense of maintaining an office and buying equipment. These physicians also take care of each other's patients in emergencies. Physicians work long hours and must accept a great deal of responsibility. Many medical procedures, even quite routine ones, involve risk. It is understandable that physicians want to be well rewarded for making decisions which can mean the difference between life and death.

单选题Young people often congregate in the main square in the evenings.

单选题She seemed to have detected some anger in his voice.

单选题Too Many Americans Have Out-of-control High Blood Pressure Nearly 1 in 3 Americans suffers from high blood pressure (hypertension) and many of them don"t have it under control, says a recent study from the Centers for Disease Control and Prevention (CDCP). According to the report, most people with uncontrolled high blood pressure have health insurance and had actually seen a doctor at least twice in the previous year, yet their condition remained unmanaged. Having high blood pressure is a major risk factor for heart disease and stroke; hypertensive people are 4 times more likely to die from a stroke and 3 times more likely to die from heart disease than people with normal pressure, according to CDCP director Dr Thomas Frieden. Together, those two conditions cause nearly 1,000 deaths a day in the US and account for $131 billion in yearly health-care costs. For the report, researchers looked at 2003-2010 data to examine high blood pressure awareness and treatment among adults with uncontrolled conditions. More than 20,000 adult participants answered survey questions and received a physical exam. The data suggest that some 67 million Americans have high blood pressure, and nearly 36 million of them don"t have their condition under control. Among those, about 14 million don"t know they"re hypertensive, nearly 6 million are aware but not receiving treatment, and 16 million know they have high blood pressure and are receiving medication for it but still don"t have their pressure under control. "We have to roll up our sleeves and make high blood pressure control a priority every day, with every patient at every doctor"s visit," said Frieden.

单选题They had a far better (yield) than any other farm miles away around this year.