单选题Charges for local telephone calls are Uoutrageous/U.

单选题{{B}}第三篇{{/B}} {{B}} New Attempts to Eradicate AIDS Virus{{/B}} A high-profile attempt to eradicate the AIDS virus in a few patients continues to show promise. But researchers won't know for a year or more whether it will work, scientist David Ho told journalists this Wednesday for the Fourth Conference in Viruses and Infections. "This is a study that's in progress," says Ho, head of the Aaron Diamond AIDS Research Center, New York. The study involves 20 people who started combinations of anti-HIV drugs very early in the course of the disease, within 90 days of their infections. They've been treated for up to 18 months. Four others have dropped out because of side effects or problems complying with the exacting drug system. The drugs have knocked the AIDS virus down to undetectable levels in the blood of all remaining patients. And, in the latest development, scientists have now tested lymph nodes and semen from a few patients and found no virus reproducing there, Ho says. "Bear in mind that undetectable does not equal absent," Ho says. Ho has calculated that the drugs should be able to wipe out remaining viruses--at least from known reservoirs throughout the body--in two to three years. But the only way to prove eradication would be to stop the drugs and see if the virus comes back. On Wednesday, Ho said he wouldn't ask any patient to consider that step before 2 years of treatment. And he emphasized that he is not urging widespread adoption of such early, aggressive treatment outside of trials. No one knows the long-term risks. But other scientists are looking at similar experiments. A federally funded study will put 300 patients on triple-drug treatments and then see if some responding well after six months can continue to suppress the virus on just one or two drugs, says researcher Douglas Richman of the University of California, San Diego. Some patients in that study 'also may be offered the chance to stop therapy after 18 months or more, he says.

单选题Compound microscopes have two separate lenses or sets of lenses. A. split B. equal C. detachable D. distinct

单选题{{B}}第三篇{{/B}} Joyce Sipes and Mary Ellen Dodge When Joyce Sipes was diagnosed with breast cancer in 1999, she shared the news immediately with her sister Mary Ellen Dodge. Mary Ellen was there for her--helping her through the terror, and the fear, and the thousand questions that are inevitably a part of hearing the word "cancer". Fortunately, a friend at work who had had a similar diagnosis highly recommended Alonzo Walker, MD, Medical College of Wisconsin surgical oncologist(外科肿瘤学家) and director of the Froedtert she cancelled her appointment to get a second opinion elsewhere. Ultimately, Joyce's cancer required a mastectomy(乳房切除术). Reconstructive surgery took place right away. She came to think of Dr. Walker as her partner, "not just my doctor. "And the Froedtert nurses, she says, were "very unusual and impressive. " As it turned out, Joyce would soon have the chance to do something important for her sister Mary Ellen. During her own cancer treatment, Joyce suggested that Mary Ellen should get herself checked through the Froedtert & Medical College of Wisconsin Breast Cancer Program. In addition to its opportunities for examination and screening, the hospital had established a program especially for women in families at high risk for cancer. Sure enough, it turned out that Mary Ellen had some cysts(囊肿) ,one of which was dangerous enough that it needed to be surgically removed. She's fine now--thanks to Joyce's suggestion. Both sisters experienced firsthand how Froedtert & Medical College of Wisconsin offers more than leading-edge technology and the unmatched experience of physicians in an academic medical center. It offers a comprehensive team approach-of consultation, collaboration, and care-all focused on the individual patient. That's why Joyce came to think of Froedtert, throughout the process of her treatment, as being her "security blanket". Joyce Sipes has been cancer-free five years now-an important milestone (里程碑)for breast cancer survivors. Joyce and Mary Ellen are together once again in their workshop in Joyce's home, making the beautiful market baskets, bread baskets, muffin(松饼) baskets, and Nantucket baskets that they--and their customers--love.

单选题His idea to solve the problem is really original .

单选题My doctor said I should vary my diet more.

单选题The Race into Space American millionaire Dennis Tito will always be famous. He was the first tourist in space. "I spent sixty years on Earth and eight days in space and from my viewpoint, it was two separate lives," Tito explained. He loved his time in space. "Being in space and looking back at earth is one of the most rewarding experiences a human being can have." This kind of experience isn"t cheap. It cost $ 20 million. However, Tito achieved his dream, so he was happy. "For me it was a life dream. It was a dream that began when I didn"t have any money," he told reporters. On April 30, 2002, Mark Shuttleworth became the world"s second space tourist. Shuttleworth is a South African businessman. At the age of twenty-eight, he also paid $20 million for the eight-day trip. Both Tito and Shuttleworth bought their tickets from a company called Space Adventures. The company has around 100 people already on their waiting list for flights into space. The spaceship to take them doesn"t exist yet. Many of the customers are persons who like adventure. They are the kind of people who also want to climb Mount Qomolangma. Other customers are people who love space. However, these people are worried. Because it"s so expensive, only very rich people can go into space. They want space travel to be available to more people. That day may soon be here. Inter Orbital Systems (IOS) plans to send up to four tourists a week into space. The tours will depart from an island in Tonga. The company promises a package that includes forty-five days of astronaut training in Russia and California, seven days in space, and a vacation in Tonga, for $2 million. However, space flight is still very dangerous. Bill Readdy is NASA"s deputy assistant administrator for space flight. He says that the chances of dying are about 1 in 500. Because of this it may take time before space tourism really takes off. You might be able to go up, but will you come down?

单选题The manager allocates duties to the clerks.

单选题He looked {{U}}dismayed{{/U}} when he heard the news.

单选题{{B}}第三篇{{/B}} {{B}} How Animals Keep Warm{{/B}} Man has invented ways to keep warm, but how do animals defend themselves? They cannot reason in the sense that man can, but nature has taken care of the animal kingdom by providing animals with special instincts. One of these instincts is known as hibernation. "Sleeping like a dormouse" is not only a common saying but is a reality. When winter comes, the dormouse and other hibernating animals have reached a well-nourished state. They eat very well in warmer days laying down fat in the tissues of their bodies and during hibernation this keeps them alive. Safe in their nests, or burrows, they sleep soundly until the warmth of spring arrives. Bats, tortoises, snakes, frogs, even insects like butterflies, hibernate more or less completely. Some, like the squirrels, sleep during coldest weather but are roused by a warm spell. During hibernation, the temperature of an animal's body drops drastically. Breathing and heart-beats almost cease. Another instinctive method of avoiding intense cold is to escape by means of migration. Wild swans, seagulls, swallows and cuckoos are a few of the very many kinds of birds which fly thousands of miles, twice a year, to avoid cold. Many animals, especially those of the Arctic reindeer of Europe, move southward towards the forests when winter approaches. They return to the northern area when the warmth of spring begins to be sensed. There are animals which do not attempt to leave at the first sign of winter cold. Their instinctive means of defense is to dig out a deep burrow, made soft and warm by padding out with straw, leaves, moss and fur. In it they have a "secret place" containing food which they hope will last the winter through! Animals which fall into this class include the Arctic fox, the rabbit and the ermine, and the little field-mice.

单选题We"ve seen a marked shift in our approach to the social issues.

单选题Negative Therapeutic Reaction There are certain people who behave in a quite peculiar fashion during the work of analysis. When one speaks hopefully to them or expresses satisfaction with the progress of the treatment, they show signs of discontent and their condition invariably becomes worse. One begins by regarding this as defiance and as an attempt to prove their superiority to the physician, but later one comes to take a deeper and juster view. One becomes convinced, not only that such people cannot endure any praise or appreciation, but that they react inversely to the progress of the treatment. Every partial solution that ought to result, and in other people does result, in an improvement or a temporary suspension of symptoms produces in them for the time being an intensification of their illness; they get worse during the treatment instead of getting better. They exhibit what is known as a "negative therapeutic reaction". There is no doubt that there is something in these people that sets itself against their recovery, and its approach is dreaded as though it were a danger. We are accustomed to say that the need for illness has got the upper hand in them over the desire for recovery. If we analyse this resistance in the usual way—then, even after fixation to the various forms of gain from illness, the greater part of it is still left over; and this reveals itself as the most powerful of all obstacles to recovery, more powerful than the familiar ones of narcissistic (admiring one"s own self too much) inaccessibility, a negative attitude towards the physician and clinging to the gain from illness. In the end we come to see that we are dealing with what may be called a "moral" factor, a sense of guilt, which is finding satisfaction in the illness and refuses to give up the punishment of suffering. We shall be right in regarding this disencouraging explanation as final. But as far as the patient is concerned this sense of guilt is dumb; it does not tell him he is guilty, he feels ill. This sense of guilt expresses itself only as a resistance to recovery which it is extremely difficult to overcome. It is also particularly difficult to convince the patient that this motive lies behind his continuing to be ill; he holds fast to the more obvious explanation that treatment by analysis is not the right remedy for his case.

单选题I don"t know the origin of this custom.

单选题What were the consequences of the decision she had made?

单选题The farmers worried about the lack of rain.A. shortageB. driftC. woeD. burden

单选题All the people assembled at Mary"s house.

单选题Japanese Car Keeps Watch for Drunk Drivers A concept car developed by Japanese company Nissan has a breathalyzer-like detection system and other instruments that could help keep drunk or over tired drivers off the road. The car"s sensors check odors inside the car and monitor a driver"s sweat for traces of alcohol. An in-car computer system can issue an alert or even lock up the ignition system if the driver seems over-the-limit. The air odor sensors are fixed firmly and deeply in the driver and passenger seats, while a detector in the gear-shift knob measures perspiration from the driver"s palm. Other carmakers have developed similar detection systems. For example, Sweden"s Volvo has developed a breathalyzer attached to a car"s seat belt that drivers must blow into before the engine will start. Nissan"s new concept vehicle also includes a dashboard-mounted camera that tracks a drivers alertness by monitoring their eyes. It will sound an alarm and issue a spoken warning in Japanese or English if it judges that the driver needs to pull over and rest. The car technology is still in development, but general manager Kazuhiro Doi says the combination of different detection systems should improve the overall effectiveness of the technology. "For example, if the gear-shift sensor was bypassed by a passenger using it instead of the driver, the facial recognition system would still be used," Doi says. Nissan has no specific timetable for marketing the system, but aims to use technology to cut the number of fatalities involving its vehicles to half 1995 levels by 2015. The car"s seat belt can also tighten if drowsiness is detected, while an external camera checks that the car is keeping to its lane properly. However, Doi admits that some of the technology, such as the alcohol odor sensor, should be improved. "If you drink one beer, it"s going to register, so we need to study what"s the appropriate level for the system to activate," he says. In the U. K., some research groups are using similar advanced techniques to understand driver behavior and the effectiveness of different road designs.

单选题 下面的短文有15处空白，请根据短文内容为没出空白确定1个最佳选项。 {{B}} Is Your Child's Stomach Pain All in His Head?{{/B}} We all know there are times that kids seem to complain {{U}}(51) {{/U}} a stomachache to get out of chores(零星活儿)or going to school. Don't be so sure that the pain they {{U}}(52) {{/U}} is all in their minds. We're learning more now about a condition {{U}}(53) {{/U}}" functional abdominal pain" that is experienced by millions of kids every day. Like many teenagers, Kyle Brust makes it a point to do his homework as {{U}}(54) {{/U}} as he gets home. Unlike most, Kyle often did this with a terrible stomachache. In fact, the {{U}}(55) {{/U}} often started while he was at school, but getting help there was getting harder. "Some of my teachers wouldn't let me go, because I'd asked so many times before and they thought I was trying to get out of {{U}}(56) {{/U}}," says Kyle. Kyle's mom Marilyn says she couldn't blame the {{U}}(57) {{/U}}. After all, she'd taken him to the doctor several times herself, and even they couldn't find anything {{U}}(58) {{/U}}. "You know, you're running the tests and nothing's coming up. So, is it in his head, is he just an extremely stressful child? It's just frustrating {{U}}(59) {{/U}} we're not finding any answers," says Marilyn. It turns out Kyle was suffering from a condition known {{U}}(60) {{/U}}functional abdominal pain, that affects as many as one out of every ten kids in this country. Even {{U}}(61) {{/U}} the cause of the pain may not be obvious, there are real consequences. "It really does hurt, and these kids really do suffer," says Dr, Campo, MD at Nationwide Children's Hospital. To help {{U}}(62) {{/U}}, Campo is looking into a new approach. He's conducting clinical trials of an antidepressant(抗抑郁药)that changes the way the body handles a chemical called serotonin(血清素). In a preliminary study, Dr. Campo found that in about eight out of ten {{U}}(63) {{/U}}, the drug normally used to treat emotional pain worked to ease the pain in the {{U}}(64) {{/U}}. "We think about it as being important in anxiety and depression and that's all quite true, but what's really interesting is that 95% of our body's serotonin is in our gut," says Campo. Campo believes these kids have extremely sensitive intestines(肠), and controlling the effects of serotonin may {{U}}(65) {{/U}}ease the pain. It seemed to work for Kyle, who is now completely pain free for the first time in years.

单选题Nurses who work in the intensive care unit in a hospital are better trained than other nurses.

单选题The manager didn't have time so far to go into it in details, but he gave us a general idea.A. at lengthB. at handC. in summaryD. in turn