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患儿，女，7岁。因发热伴有肘膝关节游走性疼痛14d入院，查体：皮肤可见环形红斑，化验检查：抗“O”＞500U，临床诊断为风湿热，治疗中给予青霉素静点的目的是
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有下列表现的疾病为 男孩，6岁。低热3d，两下肢及臀部有出血性皮疹，伴腹痛，便血1次，两踝关节肿痛。1周前曾患上呼吸道感染。
第一节 单项填空 从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。 I don’t think there’s ______ in this book.
Text 3 Getting a new PC is one thing. Keeping it running smoothly is quite another. While a personal computer should continue to perform well for years, users know that system unsteadiness (不稳定性) does exist. Yet you can reduce it to the smallest amount by following the tips below. First, put in as little software (软件) as possible. You’ll have fewer software-related problems and a system that is easier to manage. Second, you should ensure (确保) that you have as much memory (RAM) in your PC as you need. If you run Windows 98, your computer should have at least 128 megabytes (MB) of RAM and more. You can also get by with 128 MB of RAM if you use Windows NT or Windows 2000, but these operating systems will run much more smoothly if you have 256 MB of RAM or more. Third, make sure you buy good hardware (硬件). No-name products may be cheaper and sometimes just as good as name-brand products, but name-brand products usually become well-known because Windows will more often support the hardware that you buy. If you are starting out with computers, it’s also a good idea to buy ready- made systems from major manufactures (制造商). They are likely to have been tested thoroughly with your operating system, and you will generally experience fewer problems. Fourth, do prepare for disaster. No matter how well your system runs when you get it, the day will come when it will need to be replaced. Hopefully (但愿), you will replace it because technology has become out-dated, but you may need to replace it also because the hard drive crashes (毁坏) or you begin experiencing problems that no one can figure out. That’s why it’s important to copy your important information regularly. Whether you use a tape backup device or a CD-ROM drive, it’s important to make a regular backup plan and stick to it. It can be inferred from the last paragraph that ______.
Text 2 Attitudes to leisure have been much influenced by the modern love of moving around and by the ease of travel. The British enjoy the family outing. Most people choose well-known beauty spots, or seaside beaches. Others choose a lonely place, where there are very few people. They may follow tracks between the mountains and lochs and watch seals and seabirds. Food in British hotels and restaurants is reasonably cheap, but hotel rooms are not. The English people rent house or flats for their holidays, but one of the traditional ways of spending a summer holiday is in a boarding house. A house like this may have a card in its window advertising bed and breakfast. In seaside towns there are whole streets of houses, almost every one of which has such notice in window. In recent years several new holiday habits have developed. Among them; the most interesting one is the growth of the so-called holiday camps. They consist usually of great numbers of small, and often quite comfortable, suburban houses, together with central dining halls, dancing halls and swimming pools. Camping holidays with tents are not so well developed in England as in France. The summer weather too often can be very unpleasant for tent-dwellers. What is true about a boarding house
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