单选题Common-cold Sense You can't beat it, but you don't have to join it. Maybe it got the name "common cold" because it's more common in winter. The fact is, though, being cold doesn't have anything to do with getting one. Colds are caused by the spread of rhinoviruses, and, at least so far, medical science is better at telling you how to avoid getting one than how to get rid of one. Children are the most common way cold viruses are spread to adults, because they have more colds than adults—an average of about eight per year. Why do kids seem so much more easily to get colds than their parents? Simple. They haven't had the opportunity to become immune to many cold viruses. There are more than 150 different cold viruses, and you never have the same one twice. Being infected by one makes you immune to it--but only it. Colds ale usually spread by direct contact, not sneezing or coughing. From another person's hand to your hand and then to your nose or eyes is the most common route. The highest concentration of cold viruses anywhere is found under the thumbnails of a boy, although the viruses can survive for hours on skin or other smooth surfaces. Hygiene is your best defense. Wash your hands frequently, preferably with a disinfectant soap, especially when children in your household have colds. But even careful hygiene won't ward off every cold. So, what works when a coughing, sneezing, runny nose strikes? The old prescription of two aspirins, lots of water, and bed rest is a good place to start. But you'll also find some of the folk remedies.., worth Wing. Hot mixtures of sugar (or honey), lemon, and water have real benefits.

单选题Eating Meat—Less or More? Every second in the United States alone, more than 250 animals are slaughtered for food, adding up to more than 8 billion animals each year. Reducing the amount of meat in one"s diet is nutritionally, environmentally, and ethically beneficial. People who eat meat usually have weaker immune systems compared to those of vegetarians. Meat has been directly linked to diabetes, obesity, arthritis, and many other illnesses. Furthermore, meat-eaters are at a higher risk for diseases, including cancer, and they are more likely to die from these diseases. Critics say that a meatless diet does not provide enough nutrients, especially protein and iron. Actually, according to A Teen"s Guide to Going Vegetarian, by Judy Krizmanic, protein is found in almost every food, and iron appears in many vegetables. Getting enough nutrients in a meat-reduced diet should not be difficult. A 1988 study found that some of the highest pesticide residues appear in meat and eggs. Diets including more fruits and vegetables will only make people healthier. Some skeptics believe that there will be a shortage of food if animals are not eaten. In fact, the opposite is true. More than 80% of the corn and 95% of the oats grown in the U.S. are fed to livestock. The world"s cattle alone consume enough food to equal the caloric needs of 8.7 billion people, more than the entire human population. One half of the water used in the Unites States also goes to livestock; 250 gallons of water produces only 1 lb. (磅) of beef. If people eat less meat and more plants, the amount of available food will increase. Many people become vegetarians because they feel that eating animals is unethical. 90% of these animals are raised in confinement. Chickens and other birds have only about half a square foot of space each, and since they are raised so close together, a lot of blade is used to cut off their beaks to prevent them from pecking each other to death. Likewise, pigs that are repressed will bite each other"s tails, so both their teeth and tails are removed as soon as they are born. Eating animals is hazardous in numerous ways. Even a slight reduction in meat intake is better than nothing at all. Consuming less meat is beneficial to the health of animals, the health of people, and to the health of the world.

单选题She was unwilling to go but she had no choice

单选题The leading astronomers of the sixteenth and seventeenth centuries were fascinated by comets.

单选题It has been said that the Acts provided a new course of action and did not merely {{U}}regulate{{/U}} or enlarge an old one,

单选题Milosevic's Death Former Yugoslav leader Slobodan Milosevic was found dead last Saturday in his cell at the Hague-based International Criminal Tribunal for the former Yugoslavia. The 64-year-old had been on trial there since February 2002. Born in provincial Pozarevac in 1941, he was the second son of a priest and a school teacher. Both of his parents died when he was still a young adult. The young Milosevic was "untypical", says Slavoljub Djukic, his unofficial biographer. He was "not interested in sports, avoided excursions (短途旅行) and used to come to school dressed in the old-fashioned way-white shirt and tie. " One of his old friends said, he could "imagine him as a station-master or punctilious (一丝不苟的) civil servant. " Indeed that is exactly what he might have become, had he not married Mira. She was widely believed to be his driving force. At university and beyond he did well. He worked for various firms and was a communist party member. By 1986 he was head of Serbia's Central Committee. But still he had not yet really been noticed. It was Kosovo that gave him his chance. An autonomous province of Serbia, Kosovo was home to an Albanian majority and a Serbian minority. In 1989, he was sent there to calm fears of Serbians who felt they were discriminated against. But instead he played the nationalist card and became their champion. In so doing, he changed into a ruthless (无情的) and determined man. At home with Mira he plotted the downfall of his political enemies. Conspiring (密谋) with the director of Serbian TV, he mounted a modern media campaign which aimed to get him the most power in the country. He was elected Serbian president in 1990. In 1997, he became president of Yugoslavia. The rest of the story is well-known, his nationalist card caused Yugoslavia's other ethnic groups to fight for their own rights, power and lands. Yugoslavia broke up when four of the six republics declared independence in 1991. War started and lasted for years and millions died. Then Western countries intervened. NATO bombed Yugoslavia, and he eventually stepped down as state leader in 2000. Soon after this, Serbia's new government, led by Zoran Djindjic, arrested him and sent him to face justice at the Yugoslav war crimes tribunal in the Hague.

单选题A will is a document written to ensure that the wishes of the deceased are realized .

单选题He was {{U}}utterly{{/U}} exhausted at the end of the Marathon.

单选题Even before modern {{U}}notions{{/U}} of friction, it was known that greased surfaces move over one another more easily than dry ones.

单选题To absorb a younger work force, many companies offered retirement plans as incentives for older workers to retire and make way for the younger ones who earned lower salaries.

单选题She gave up her job and started writing poetry.

单选题A deadly disease has affected these animals.

单选题"There is no other choice," she said in a harsh voice.

单选题The father was unwilling to give his son the keys to his car.

单选题What has Althouse Bus Transportation been mainly aiming at?

单选题The chemist analyzed that there was no trace of poison in the coffee.

单选题I am really thankful to you for all you have done for me.A. helpfulB. usefulC. pitifulD. grateful

单选题One Good Reason to Let Smallpox Live It's now a fair bet that we will never see the total extinction of the smallpox virus. The idea was to cap the glorious achievement of 1980, when smallpox was eradicated in the wild, by destroying the killer virus in the last two labs that are supposed to have it—one in the US and one in Russia. If smallpox had truly gone from the planet, what point was there in keeping these reserves? (51) reality, of course, it was naive to (52) that everyone would let (53) of such a potent potential weapon. Undoubtedly several nations still have (54) vials. (55) the last "official" stocks of live virus bred mistrust of the US and Russia, (56) no obvious gain. Now American researchers have (57) an animal model of the human disease, opening the (58) for tests on new treatments and vaccines. So once again there's a good reason to (59) the virus—just in (60) the disease puts in a reappearance. How do we (61) with the mistrust of the US and Russia? (62) . Keep the virus (63) international auspices in a well-guarded UN laboratory that's open to all countries. The US will object, of course, just as it rejects a multilateral approach to just about everything. But it doesn't (64) the idea is wrong. If the virus (65) useful, then let's make it the servant of all humanity—not just a part of it.

单选题Jack is a {{U}}diligent{{/U}} worker. A. ambitious B. lazy C. hardworking D. clever

单选题It seemed （incredible） that he had been there a week already.