单选题The compulsory courses refer to those that you have to take.A. simpleB. voluntaryC. practicalD. required

单选题The question "Are you a man or a mouse?" really means to ask whether you believe

单选题I seldom watch TV. A. rarely B. frequently C. normally D. occasionally

单选题{{B}}第一篇{{/B}} Coronary heart disease(冠心病) is a term used to describe conditions like angina(心绞痛) or heart attack. Many people suffer from heart disease. If you have had a heart attack or suffer from angina it is very important that you take positive action now in order to keep your heart as healthy as possible. This article outlines steps you can take in order to help achieve this. A number of factors have been known to increase the risk of your coronary heart disease. There are often referred to as "risk factors". But some of these factors can be changed or modified to help improve your condition. These include: high Mood cholesterol(胆固醇), high blood pressure, smoking, poor diet, lack of exercise, high alcohol intake, obesity, diabetes and stress. High blood cholesterol has been shown to be one of the most important risk factors, yet only about half of coronary heart-disease patients have had their blood cholesterol checked. When blood cholesterol is high, it builds up in the walls of the arteries (blood vessels), causing them to narrow. The narrowing can then begin to restrict the blood flow to the heart. Under these conditions patients will often experience chest pain or tightness, known as angina. In some cases narrowing of the arteries that supply blood to the heart can become so severe that it blocks the artery. More usually, however, a partial blockage triggers a blood clot, causing a heart attack, which can cause permanent damage to part of the heart muscle. To reduce the build up of cholesterol in the artery walls, and so reduce the risk of a heart attack, cholesterol lowering has become an essential part of treatment for people with coronary heart disease. Reductions in blood cholesterol have been shown to provide major benefits for patients who have angina or have had a heart attack, such as reducing the risk of another heart attack occurring and improving survival. Your cholesterol should be checked regularly, and modified if necessary, along with all the other factors. This will help to ensure that you minimise the risk of suffering future heart problems like another heart attack. It is better for your heart if all the risk factors are reduced by a little, rather than concentrating on one and ignoring the others. Changes in lifestyle can often help to reduce these risk factors. These include stop-ping smoking or cutting down the number of cigarettes you smoke, a healthier diet and a healthy body weight, regular exercise, and not drinking more than the recommended amount of alcohol. A healthier diet should consist of reducing the amount of saturated fat(饱和脂肪) you eat and balancing this with an intake of non-and poly-unsaturated fats and increased consumption (单链和多链不饱和脂肪) of cereal foods, vegetables and fruit. Sometimes changes in lifestyle are not enough to reduce factors like cholesterol or blood pressure sufficiently, and so drugs may be prescribed. These drugs should always be combined with changes in lifestyle.

单选题F. D. Roosevelt When President Franklin D. Roosevelt collapsed and died of a stroke in April 12, 1945, the nation went into a state of depression unknown since the death of Abraham Lincoln. Roosevelt had become inseparably linked with a series of national crises—in his case the Great Depression and World World War Ⅱ. And like Lincoln, Roosevelt was viewed as a savior, a man who had redeemed his people. Put simply, F. D. Roosevelt enjoyed the elusive charisma (引起 大众敬仰的领袖特质) so prized but politicians. Blessed with enormous self-confidence and an ingratiating personality, he inspired tremendous loyalty among most Americans. They loved him and put him in the White House on four separate occasions 1932, 1936, 1940, and 1944. But like all charismatic leaders, Roosevelt also generated tremendous hostility in some circles, particularly in corporate boardroom and the parlors of the well-to-do(富人的会客厅). They viewed him as a "traitor to his class", a politician so seduced by power (受权势诱惑)that he posed a threat to property and the social order. Franklin D. Roosevelt was a complicated man, a beloved acquaintance of thousands but an intimate of very few. Bon rich and raised in pampered splendor (优越受宠的环境), he nevertheless led a virtual revolution in public policy, giving ethnic minorities, labor unions, and poor people their first taste of influence at federal level. Although Roosevelt inspired a legion of intellectuals to invest their energies in public service, he was not an innovative thinker himself. He preferred the give-and-take of politics, and the inherent excitement of its risks, to the intricate nuts and bolts of social and economic policy. His public outward character was overwhelming, but there was also a private side to his life that the American people understood only superficially. During the Summer of 1921, little more than a decade before he became president, Roosevelt contracted polio, or infantile paralysis, a disease that crippled him for the rest of his life.

单选题The police have conducted the extensive investigation for this murdering.

单选题She stood there, trembling with fear.

单选题If you make a mistake, delete the characters you have entered using the backspace delete key.A. removeB. recoverC. installD. restart

单选题The manager allocates duties to the clerks.

单选题France has kept Uintimate/U links with its former African territories.

单选题Below 600 feet ocean waters range from dimly lit to completely dark.

单选题Her figure was slender and graceful, her features good.A. feebleB. lovelyC. beautifulD. pleasant

单选题 Hypertension Drugs Found to Cut Risk of Stroke Australian doctors declared Monday that a cocktail of simple antihypertensive drugs can lower the risk of patients suffering a repeat stroke by more than a third. This is the result of their research. The research, presented at a medical conference in Italy over the weekend, has been valued highly as a major breakthrough in stroke prevention. Strokes kill 5 million people a year, and more than 15 million suffer non-fatal strokes that often leave them with useless limbs, slurred speech and other serious disabilities. One in five stroke survivors goes on to have a second, often fatal, stroke within five years of the first. An international six-year study of 6,100 patients directed from Sydney University found that by taking two blood pressure-lowering drugs, the risk of secondary strokes can be reduced by up to 40 percent. Even taking one of the commonly available drugs can cut the risk by a third, the study said. The drugs are the diuretic indapamide (吲达帕胺)and the ACE inhibitor perindopril, better known by its brand name Coversyl. The combination was effective even in patients who did not have high blood pressure, the researchers said. They even found that the risk of another stroke could be cut by three quarters among the one-in-ten patients who had suffered a cerebral hemorrhage (出血), the worst type of stroke, where there is direct bleeding into the brain. Stephen McMahon, who presented the research at the Milan congress of the European Society of Hypertension, said about 50 million people were alive who had suffered at least one stroke. "If most of those patients were able to get access to this treatment, it would result in maybe the avoidance of half a million strokes a year," the professor told Australia's ABC Radio. McMahon said doctors had long known that lowering the blood pressure of those with hypertension could help prevent strokes. "What we have shown for the first time is that it does not really matter what your blood pressure is; if you have had a stroke, then lowering blood pressure will produce large benefits, to begin with—even for people whose blood pressure is average or below average," he said. McMahon said the Milan gathering had heralded the research as a "major breakthrough in the care of patients with strokes—perhaps the biggest step forward that we have made in the last couple of decades."

单选题Canada will prohibit smoking in all offices this year.

单选题We had a very {{U}}awful{{/U}} earthquake here last year.

单选题Let's set up a meeting with other parents, so everyone can learn ways to make water safer for our children to drink.A. raiseB. establishC. haveD. erect

单选题Sydney is home to nearly 4.4 million people...The 57 square kilometer harbour is one of the largest in the world, and famous for the unmistakable 134 metres high arch of the Harbour Bridge and the graceful sails of the Opera House. It is a busy waterway with ferries, freighters, hydrofoils and pleasure craft. Sydney Harbour is the largest in the world.A. RightB. WrongC. Not Mentioned

单选题 Deaths Associated with Sugary Soft Drinks Sugar-sweetened sodas, sports drinks and fruit drinks may be associated with about 180,000 deaths around the world each year, according to a recent research. Sugar-sweetened beverages are consumed throughout the world, and contribute to excess body weight, which increases the risk of developing diabetes, cardiovascular diseases and some cancers. Using data collected as part of the 2010 Global Burden of Diseases Study, the researchers linked intake of sugar-sweetened beverages to 133,000 diabetes deaths, 44,000 deaths from cardiovascular diseases and 6,000 cancer deaths. Seventy-eight percent of these deaths due to over-consuming sugary drinks were in low and middle-income countries, rather than high-income countries. "In the U.S., our research shows that about 25,000 deaths in 2010 were linked to drinking sugar-sweetened beverages," said Mr. Singh, a postdoctoral research fellow at the Harvard School of Public Health in Boston. Of nine world regions, Latin America/Caribbean had the most diabetes deaths (38,000) related to the consumption of sugar-sweetened beverages in 2010. Japan, one of the countries with lowest per-capita consumption of sugary beverages in the world, had the lowest death rate associated with the consumption of sugary beverages, at about 10 deaths due to per million adults. "Because we were focused on deaths due to chronic diseases, our study focused on adults. Future research should assess the amount of sugary beverage consumption in children across the world and how this affects their current and future health," Singh said. The American Heart Association recommends adults consume no more than 450 calories per week, from sugar-sweetened beverages, based on a 2,000-calorie diet and offers tips to help you make better lifestyle choices and eat healthier.

单选题The document was compiled by the Department of Health.

单选题After his wife and children died, Paul turned to his work to