The virus causing AIDS enters the blood and quickly penetrates（渗透）certain white cells in the body. / At first there is often little or no trace（痕迹）of the virus at all. / This situation usually lasts for six to twelve weeks. / During this time the person is free of symptoms（征兆）/ and antibody（抗体）tests are negative. / The first thing that happens after infection / is that many people develop a flue-like illness. / This may be severe enough to look like glandular（有腺的）fever / with swollen glands in the neck and armpits腋窝/ tiredness, fever and night sweats. / Some of those white cells are dying, / virus is being released, / and for the first time the body is working hard to make correct antibodies. / At this stage the blood test will usually become positive. / Most people do not realize what is happening, / although when they later develop AIDS they look back and remember it clearly. / Most people have produce antibodies in about twelve weeks.The Library of Congress is the national library of the United States. / It was founded in 1800 to serve the needs of the congressmen. / Today, it contains books, articles and documents on every subject imaginable. / Besides senators, congressmen and other government officials, / it serves libraries, researchers, artists and scientists throughout the country and the world. /The Library is one of the largest libraries in the world. / It has a collection of 74 million items which are housed in three buildings. / The bookshelves stretch for 350 miles. / Of the 18 million books, more than half are in languages other than English. / The main reading room is a great hall of marble pillars. / It is the center of activity in the library. / There is a computer catalog center with six terminals for quick access to information. / For greater speed and efficiency, / the library has installed an electric book – carrying system / that carries books from one building to another in only a few seconds.Weak eyesight is a term that is generally used to refer to nearsighted eyes. / People who are nearsighted can see well at a short range, / but anything very far away is likely to be unclear. / The term "weak eyesight" is misleading, / for in nearsighted eyes the lens of the eye is actually too strong. / The nearsighted lens is so powerful that it focuses the light coming onto the eye so quickly. / Nearsightedness is common, and its growth may be graded; / often the unclearness of distant object is so slight at first / that a person may not recognize the condition. / Nearsightedness is frequently discovered first at school. / It is here that a student first realizes the difficulty of seeing words on the blackboard, / whereas others in the class have no trouble reading the blackboard at all. / After discovery, nearsightedness can easily be corrected. / You just needs a pair of glasses / which can decrease the power of the lens of the eye. / (161 words) Rice is very much under appreciated in the United States. / With the exception of Asian cooking, / rice is usually a side dish or combined with other ingredients. / Rice is very nutritious, low cost and easy to prepare food. / There are different types of rice available and the cooking time varies by type of rice. / Follow the package instructions for the amount of liquid necessary and the cooking times. / Both vary for each type of rice. / Regular white rice has been milled / to remove the hull comes in long, medium and short grains. / Long grained rice is the best for all-purpose use. / Brown rice has a pleasant nutty flavor and a firmer texture. / While white rice is cooked in about 15 minutes, / brown rice takes 45 to 50 minutes to cook. / When cooking rice do not be concerned if you have cooked rice left over. / There are some excellent recipes, which use cooked rice.The relationship between a teacher and astudent can be either good or bad, helpful or harmful. / Either way, there lationship can affect the student for the rest of his life. / A good teacher-studentrelationship will make the teacher’s job worthwhile. / A bad relationship can discourage the student from learning / and make teaching an unpleasant task. / In order to have a good teacher-student relationship, /respect between teacher and student is very important. / If the teacher is too strict, he frightens the student. / If the teacher is too friendly, the studentmay become lazy and stop learning hard. / The teacher’s attitude and approach should be in between those two extremes. / As for the student, his proper respect to the teacher must be shown all the time. / He should be eager to learn and willing to work hard. /In conclusion, a good teacher-student relationship can be beneficial to both. / The student absorbs knowledge eagerly and enjoyable, / and the teacher gains satisfaction from his work.There are many aspects to health, illness and healing.Among all the teachings there's one thing that is universal to them all. And that is the unquestionable benefit achieved by communicating with others about health and its related issues. Itis with the single philosophy in mind that we have developed this site as a form for communication. Dealing with a medical concern is often difficult. Connecting with others who are going through the same thing can make a world of difference. Our mission is to developon-line communities to help you make those connections. You can post questions,comments, and respond to messages from others. We've got various topics and we are adding more all the time. If you don't see the topics you are looking for, just let us know, and we will consider our message board for it. We hope you decide to become a regular participant and help to make this a great resourceSaving your hard-earned money can be difficult. As most of us enjoy spending rather than saving, I certainly had a tough time holding on to my money every payday. When I got my first few paychecks, right away I spend the cold hard cash I'd earned by hard work. But I quickly realized that this sort of spending wouldn't really help me get the things I wanted. So I made a pact with myself. I promise that before I did anything with the money, I would deposit at least 50% of the money into my savings account. That way, I eliminated the temptation to spend that money.After I got used to saving my money, it was much easier for me not to be tempted to buy things when I saw them. When I saw a CD, or vedio game that looked appealing,I learn to ask myself,"Do I really need this?"Asking this question helped me appreciate my money, and not let it slip out of my wallet quite so fast.Believe or not, 43,000,000 Americans are gardening. That is about one in six. Gardeners, of course, come in many varieties. Not surprisingly, most of them are people who live in the suburbs, and enjoy planting flowers, or maybe a small vegetable garden.The average age of gardeners in America is about 45 years old; they usually fall somewhere in the middle class. But the fastest growing groups are city dwellers. Urban residents are finding ways of gardening even in their crowded areas. Many go to large public gardens, as a place designed by the city for garden, and you can actually ranch your own plot.Still other people use their balconies or roof tops, wherever they can find the space to plant small patches of green.。