单选题 Beyond the Pap Scientists have known for some time that virtually all cases of cervical cancer are triggered by a family of viruses called human papillomavirus, or HPV. Most women who become ineffected with HPV are able to shake off the virus and suffer no apparent long-term consequences to their health. But a few women develop a persistent infection that can, for reasons that are not entirely clear, eventually lead to cancerous changes in the cervix. Now researchers at the Digene Corp of Beltsville, Maryland, have developed a test that detects an active HPV infection by looking for its genetic byproducts in the vagina. The HPV test was better than the standard Pap test at finding cervical cancer at any stage, according to two studies published this month in the Journal of the American Medical Association. So far, so good. Unfortunately, the test's false-positive rate-how often it indicated that there was a problem when none existed was almost twice as high as that for the Pap smear. In these cases, a biopsy of the woman's cervix showed no sign of disease. And that's the crux of the problem. How many women should undergo what is, when it comes right down to it, unnecessary treatment to find a few more cases of cervical cancer? Shouldn't health officials focus instead on making sure that more women undergo regular Pap-smear examinations? After all, Pap smears, though far from perfect, have helped dramatically lower the death toll from cervical cancer taking it from the No. 1 cause of death due to cancer in American women to the 10th. Complicating matters is the fact that HPV is a very common infection. In some parts of the U.S. as many as half of all women under age 35 have an active case. Yet 99 out of 100 women who are HPV-positive will never get cervical cancer, estimates Dr. Joanna Cain, vice president of the American College of Obstetricians and Gynecologists. "If those 99 women live their lives as if they're going to develop cancer", she says, "we're not necessarily doing them any good." At present, the HPV test is approved in the U. S. only to help resolve ambiguous results from a Pap-Smear test. Many gynecologists believe that HPV will eventually replace the pap. But they're not willing to abandon it without a lot more detailed information and neither should you.

单选题下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。 Swine Flu in New York The Centers for Disease Control and Prevention (CDC) has confirmed cases of swine (猪) {{U}}(51) {{/U}} in eight students at a New York preparatory (预科的) school, Mayor Michael Bloomberg said Sunday. The students have had only {{U}}(52) {{/U}} symptoms and none have been hospitalized, he said. Some of the students have already recovered. More than 100 students were absent from {{U}}(53) {{/U}} due to flu-like symptoms last week. New York health officials tested samples for eight students Saturday and determined the students were probably {{U}}(54) {{/U}} from swine flu, and the CDC confirmed the {{U}}(55) {{/U}} on Sunday, Bloomberg said. The announcement brings the {{U}}(56) {{/U}} of confirmed swine flu cases in the United States to 20. Bloomberg said there is no {{U}}(57) {{/U}} of a citywide outbreak (爆发) of the flu, and no sign of a potential outbreak of swine flu at {{U}}(58) {{/U}} schools. Some students at the school {{U}}(59) {{/U}} spring break in Mexico, Bloomberg said, but authorities have not determined {{U}}(60) {{/U}} any of the students with a confirmed case of swine flu was in Mexico. Someone who traveled to Mexico may not have had any flu symptoms but {{U}}(61) {{/U}} on the flu to someone else, he noted. Bloomberg called on students who are home sick to {{U}}(62) {{/U}} home for 48 hours after their symptoms go away. If symptoms are normal for a regular kind of flu, there is {{U}}(63) {{/U}} need to go to a hospital, said Bloomberg. If symptoms become severe, as {{U}}(64) {{/U}} any illness, people should go to the hospital, he said. St. Francis, which has 2,700 students, announced it will remain closed for two days. {{U}}(65) {{/U}} whether the students' illnesses have been minor because they're young and healthy or because it is a minor strain (菌株) of the virus, Bloomberg responded, "We don't know. "

单选题Sometimes it is Uadvisable/U to book hotels in advance.

单选题Breakfast Studies show that children who eat breakfast do better in school. It doesn"t take much further thought to believe that adults will feel better and perform better at work as well. Whether you work at home, on the farm, at the office, at school, or on the road, it is not a good idea to skip (故意略去) breakfast. If we don"t eat breakfast, we are likely to become tired when our brains and bodies run low on fuel. By mid-morning, a lot of us grab a cup of coffee, or wolf down a sugary candy bar to wake up again. This might work for a few minutes, but by lunchtime we are hungry, bad-tempered, and perhaps our mood might make us a little more likely to make unhealthy choices at lunch. Eating a good breakfast sets the tone for the rest of the day. People who eat breakfast are generally more likely to maintain a healthy weight. Many people believe that they will lose weight if they skip meals, but that isn"t a good idea. The body expects to be refueled a few times a day, so start with a healthy breakfast. A healthy breakfast should contain some protein (蛋白质) and some fiber (纤维). Protein can come from meat, eggs, beans, or soy (大豆). Fiber can be found in whole cereals (谷物), grains or in fruits. A good example of a healthy breakfast might be something simple like a hard boiled egg, an orange, and a bowl of whole grain cereal with soy milk.

单选题Which of the following is NOT mentioned as a step to control smoking?

单选题I enjoyed the play; it had a clever plot and very funny dialogues.

单选题You should {{U}}conform to{{/U}} the usage of society.

单选题Jack packed up all the things he had accumulated over the last ten years

单选题The expression "adding vital life to years" in the last paragraph means

单选题It is {{U}}advisable{{/U}} to see a dentist regularly.

单选题Thus our Uconviction/U is reinforced that only social revolution can really solve the problems of the people.

单选题A small number of firms have ceased trading.

单选题Mortgage A house is the most expensive thing most people will ever buy. Very few people have enough money of their own to buy a home, so they have to borrow money from a bank. Borrowing money from a bank to buy a house is called "take a mortgage." The bank usually lends money or gives a mortgage for twenty-five years. Houses are so expensive that many people nowadays have to borrow as much as $ 50, 000. In other words, they will have a $ 50, 000 mortgage. How can you get a mortgage? When you find a house you like, you go to a bank. The bank will research you financial history and decide if. They think you are a good risk. They will want to know what kind of job you have, what kind of salary you make, and how long you have had the job. They will also want to know how much money you have. In addition, the banks will require a down payment. Depending on which state you live in, the bank may require as much as 30% of the-price of the house as a down payment. The bank will then lend you the rest of the money to buy the house. Many people are never able to buy a house because they cannot save enough money for the down payment.

单选题Though chess players may now compete against computers, they still follow rules that were used over 800 years ago.A. come afterB. abide byC. reciteD. allow

单选题Our party is perfect with our great efforts.A. excellentB. normalC. commonD. casual

单选题下面的短文后列出了7个句子，请根据短文的内容对每个句子做出判断：如果该句提的是正确信息，请选择A；如果该句提的是错误信息，请选择B；如果该句的信息文中没有提及，请选择C。 Breast Cancer Deaths Record Low The number of women dying from breast (乳房) cancer has fallen to a record low by dropping under 12,000 a year for the first time since records began. The Cancer Research UK data showed that 11,990 women died in the UK in 2007. The previous lowest figure had been recorded in 1971 -- the year records began -- after which it rose steadily year by year until the late 1980s. Professor Peter Johnson, Cancer Research UK's chief clinician, said: "It's incredibly encouraging to see fewer women dying from breast cancer now than at any time in the last 40 years, despite breast cancer being diagnosed more often. " "Research has played a crucial role in this progress leading to improved treatments and better man agement for women with the disease. " "The introduction of the NHS (国民保健制度) breast screening program has also contributed as women are more likely to survive the earlier cancer is diagnosed. " Breast cancer is now the most common cancer in the UK with 45,500 women every year diagnosed with the disease -- a 50% rise in 25 years. The number of deaths peaked in 1989, when 15,625 women died. It then fell by between 200 and 400 deaths each year until 2004. There was a slight rise in 2005 and then two years of falls. Dr. Sarah Cant, policy manager at Breakthrough Breast Cancer, said: "It is great news that fewer women are dying from breast cancer and highlights the impact of improved treatments, breast screening and awareness of the disease. " "However, this is still too many women and incidence (发生率) of the disease is increasing year by year. " The rising rate of breast cancer diagnosis has been put down to a variety of factors including obesity (肥胖) and alcohol consumption.

单选题The bad news {{U}}upset{{/U}} me very much. A.disturbed B.saddened C.angered D.disappointed

单选题While we don"t agree, we continue to be friends.

单选题According to Paul Kleihues, cancer was once regarded as

单选题A great deal has been done to {{U}}remedy{{/U}} the situation