单选题______ more time, my paper would have been beRer.A. To giveB. If givingC. GivenD. Giving

单选题Helen Keller"s achievements as an author and lecturer were an inspiration to millions.

单选题The little gift grasped her mother's arm as she crossed the street. A. understood B. had a hold over C. took hold of D. left hold of

单选题You have to be patient if you want to sustain your position.

单选题He made a great show of reluctance, but finally accepted my offer.A. emotionB. unwillingnessC. angerD. postpone

单选题First Self Contained Heart Implanted A patient on the brink of death has received the world"s first self-contained artificial heart—a battery powered device about the size of a softball that runs without the need for wires, tubes or hoses sticking out of the chest. Two surgeons from the University of Louisville implanted the titanium and plastic pump during a seven-hour operation at Jewish Hospital Monday. The hospital said the patient was "awake and responsive" Tuesday and resting comfortably. It refused to release personal details. The patient had been expected to die within a month without the operation, and doctors said they expected the artificial heart to extend the person"s life by only a month. But the device is considered a major step toward improving the patient"s quality of life. The new pump, called AbioCor, is also a technological leap from the mechanical hearts used in the 1980s, which were attached by wires and tubes to bulky machinery outside the body. The most famous of those, the Jarvie-7, used air as a pumping device and was attached to an apparatus about the size of a washing machine. "I think it"s potentially a major step forward in the artificial heart development," said Dr. David Faxon, president of the American Heart Association. However, he said the dream of an implantable, permanent artificial heart is not yet a reality: "This is obviously an experimental device whose long-term success has to be demonstrated." Only about half of the 4,200 Americans on a waiting list for donor hearts received them last year, and most of the rest died. Some doctors, including Robert Higgins, chairman of cardiology at the Medical College of Virginia in Richmond, said artificial hearts are unlikely to replace donor hearts. "A donor heart in a good transplant can last 15 to 30 years," he said. "It"s going to be hard to replace that with a machine. " The AbilCor has a 2-pound pumping unit, and electronic controls that adjust the pumping speed based on the body"s needs. It is powered by a small battery pack worn outside the body that transmits current through the skin.

单选题We all think that Mary's husband is a very {{U}}boring{{/U}} person. A. shy B. stupid C. dull D. selfish

单选题Trading companies put up the money for the first English colonies in North America.

单选题"I didn"t mean to upset you," he said mildly .

单选题Tom felt so happy that he broke into song.A. burstB. blastedC. burnedD. blazed

单选题The dentist has decided to {{U}}take out{{/U}} the girl's bad tooth.

单选题What surprised me was the great amount of work still done by hand.A. mentallyB. practicallyC. manuallyD. generally

单选题What can you do to Uensure/U that you will stay healthy?

单选题It's said that prior to an earthquake some animals' behaviors become very abnormal.A. strangeB. mildC. rudeD. normal

单选题The merit of sales tax is that it decreases government reliance on income taxes.

单选题Flu does Scratchy throats, stuffy noses and body aches all spell misery, but being able to tell if the cause is a cold or flu may make a difference in how long the misery lasts. The American Lung Association (ALA) has issued new guidelines on combating colds and the flu, and one of the keys is being able to quickly tell the two apart. That's because the prescription drugs available for the flu need to be taken soon after the illness sets in. As for colds, the sooner a person starts taking over-the-counter remedy, the sooner relief will come. The common cold and the flu are both caused by viruses. More than 200 viruses can cause cold symptoms, while the flu is caused by three viruses-flu A, B and C. There is no cure for either illness, but the flu can be prevented by the flu vaccine (疫苗), which is, for most people, the best way to fight the flu, according to the ALA. But if the flu does strike, quick action can help. Although the flu and common cold have many similarities, there are some obvious signs to look for. Cold symptoms such as stuffy nose, runny nose and scratchy throat typically develop gradually, and adults and teens often do not get a fever. On the other hand, fever is one of the characteristic features of the flu for all ages. And in general, flu symptoms including fever and chills, sore throat and body aches come on suddenly and are more severe than cold symptoms. The ALA notes that it may be particularly difficult to tell when infants and preschool age children have the flu. It advises parents to call the doctor if their small children have flu-like symptoms. Both cold and flu symptoms can be eased with over-the-counter medications as well. However, children and teens with a cold or flu should not take aspirin for pain relief because of the risk of Reye syndrome (综合症), a rare but serious condition of the liver and central nervous system. There is, of course, no vaccine for the common cold but frequent hand washing and avoiding close contact with people who have colds can reduce the likelihood of catching one.

单选题The old man got into the habit of {{U}}storing{{/U}} money under the bed.

单选题 Liver Disease The liver is the second largest organ in your body. The liver performs many jobs in your body. It processes what you eat and drink into energy and nutrients your body can use. The liver also removes harmful substances from your blood. One out of every 10 Americans is affected by liver disease. Liver disease is one of the top 10 causes of death in the United States. There are more than 100 liver diseases. Viruses cause some of them, like hepatitis A, hepatitis B and hepatitis C. Others can be the result of drugs, poisons or drinking too much alcohol. If the liver forms scar tissue because of an illness, it's called cirrhosis. Cancer can affect the liver. You should also inherit a liver disease such as hemochromatosis. Liver disease can manifest in many ways. Characteristic manifestations include jaundice, liver enlargement, portal hypertension and etc. Sometimes the manifestations of liver disease are not obvious. For example, symptoms may include fatigue, a general feeling of illness, loss of appetite, and mild weight loss. However, people may not notice these symptoms, and these symptoms are also typical of many other diseases. Thus, liver disease can easily be overlooked, particularly in its early stages. Hepatitis A vaccination is the best way to prevent HAV (hepatitis A virus). Hepatitis B vaccination is the best way to prevent HBV. Other ways to stop the spread of HBV are: not sharing needles; practicing safe sex; not Sharing razors, toothbrushes, or other personal items; using only clean needles for fattoos and body piercings. There is no vaccine to prevent HCV. The only way to prevent HCV is to avoid direct contact with infected blood. Eating a healthy diet and exercising regularly help the liver to work well. Limit the amount of alcohol you drink. When medicines are taken incorrectly, the liver can be harmed. So follow dosing instructions and talk to a doctor or pharmacist about the medicines you are taking. Mixing alcohol and medicines can harm your liver, even if they are not taken at the same time. Toxins can injure liver cells. So limit direct contact with toxins from cleaning and aerosol products, insecticides, chemicals, and additives in cigarettes. Do not smoke.

单选题Not every psychologist would agree that Interact or video - game dependency is a legitimately (合理地) diagnosable problem. Some suggest that pathological (非理智的) game, playing or Interact surfing is not an addiction per se (本身，就本身而言), hut a symptom of a deeper issue, such as depression or anxiety. But Cash believes the virtual world can he no less addicting than other activities, such as gambling. She describes her first patient who exhibited signs of compulsion (冲动): He had come to her in a moment of crisis 15 years ago - having discovered a text - only role - playing computer game that was conceptually similar to Dungeons and Dragons, he had begun dedicating nearly all of his time to the game. He got fired from his job at nearby Microsoft, and his marriage was falling to pieces. Cash realized he was showing the classical signs of addiction. " I was so intrigued. "says the co -author of the recent book Video Games and Your Kids: How Parents Slay in Control. "That was what started me on my path. " What happened to Rae's first patient when he was addicted to a game?A. He was transferred to a new job position.B. There were serious problems with his marriage.C. lie didn't go to work to make time for playing.D. tie found a new job with the help of Ra

单选题 阅读下面的短文，文中有15处空白，每处空白给出4个选项，请根据短文的内容从4个选项中选择1个最佳答案。 Smoking is considered dangerous to the health. Our tobacco--seller, Mr. Johnson, therefore, always asks his customers, if they are very young, whom the cigarettes are bought{{U}} (51) {{/U}}. One day, a little girl whom he had never seen before walked{{U}} (52) {{/U}}into his shop and demanded twenty cigarettes. She had the{{U}} (53) {{/U}}amount of money in her hand and seemed very sure of herself. Mr. Johnson was so{{U}} (54) {{/U}}by her confident manner that he{{U}} (55) {{/U}}to ask his usual question.{{U}} (56) {{/U}}, he asked her what kind of cigarettes she wanted. The girl replied{{U}} (57) {{/U}}and handed him the money. While he was giving her the change, Mr. Johnson said laughingly that{{U}} (58) {{/U}}she was so young she should (59) the packet in her pocket in case a policeman saw it.{{U}} (60) {{/U}}, the little girl did not seem to find this very funny. Without{{U}} (61) {{/U}}smiling she took the{{U}} (62) {{/U}}and walked towards the door. Suddenly she stopped, turned{{U}} (63) {{/U}}, and looked steadily at Mr. Johnson. There was a moment of silence and the tobacco-seller{{U}} (64) {{/U}}what was going to say. All at once, in a clear,{{U}} (65) {{/U}}voice, the girl declared, " My dad is a policeman," and with that she walked quickly out of the shop.