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什么叫社会保障它一般包括哪些项目
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In a world where bad news has become everyday news, people are turning to an ancient technique to deal with stress: meditation. At meditation centers, prayer groups and yoga studios around the United States, more and more are finding peace of mind by being quiet: Some use meditation to help deal with life changes; others, to process the painful reality of political and social unrest around the world of the type that has been experienced more recently. Stress from the September 11 terrorist attacks is "probably about 70 percent" of the reason one Chicago man started meditating and practicing yoga with his new wife. He became so emotionally affected that he realized he needed help in managing his stress. The yoga classes he takes begin and end with meditation. This "quiet time" helps him feel a lot more relaxed and gives him more breath control. The fact is,though ,that he is not alone. Across the country, many are turning to more meditative exercise as they seek both psychological and physiological relief. In addition to helping people work out their stress, these classes bring people together, in the same way that religious services or other community activities have done in the past. Different schools of meditation teach particular techniques, but they share a common basis―focusing attention on something your mind can return to if you are distracted. This may be the rhythm of breathing, an object such as a candle flame loving kindness, or a repetitive movement, as in walking or t’’ai chi (taiji). Regardless of the specific technique or mode that is followed, meditation has well-documented benefits. Medical research indicates that it causes a sharp decrease in metabolic activity, reduced muscle tension, slower breathing, and a shift from faster brainwaves to slower waves. It also reduces high blood pressure. Practitioners are convinced that meditation is good for health because it relaxes the body. For ages, meditation has been a core practice of many groups meeting in their communal or religious centers. However, let’’s not forget that this is the twenty-first century. So, for those people who are too shy or busy to go to the nearest meditation center, there are Internet sites that offer online guided meditation. One has a variety of meditations from various religious traditions. At another, Jesuit priests post meditations and readings from the Scriptures every day, and at still another, Buddhist and Hindu practitioners include music and visuals to accompany their offerings. These websites allow anyone with a computer access to meditation at any time. The fact is that whether online, at Yoga classes, or at local spiritual centers, more people are turning to the practice of meditation. The underlying approach of meditative techniques requires
There will be a steady trend toward vegetarianism. A given quantity of ground can provide plant food for man or it can provide plant food for animals which are later killed for meat. In converting the tissues of food into the tissues of the feeder, up to 90 per cent is used for reasons other than tissue maintenance and growth. This means that one hundred pounds of plant food will support ten pounds of human tissue―while one hundred pounds of plant food will support ten pounds of animal tissue, which will then support one pound of human tissue. In other words, land devoted to plant food will support ten times as many human beings as land devoted to animal food. It is this (far more than food preferences or religious directions ) that forces overcrowded populations into vegetarianism. And it will be the direction in which the United States of 2001 will be moving―not by presidential order, but through the force of a steady rise in meat prices as compared with other kinds of food. This, in turn, will come about because our herds will decrease as the food demand causes more and more meadow to be turned to farmland, and as land producing corn and other animal food is converted to providing food directly for man. Another point is that it is not only energy that is in short supply. A shortage of oil means a shortage of plastics; a shortage of electricity means a shortage of aluminium. We are also experiencing a shortage of paper and most other raw materials. This means that, for one thing, our generosity in wrapping, bagging and packaging will have to recede. There will have to be at least a partial return in supermarkets to the old days where goods were supplied in bulk and given out in bags to order. It may even become necessary to return bags, as we once returned bottles, or pay for new ones. A decline in per-capita energy use will make it necessary to resort to human muscle again, so that the delivery man will make a comeback (his price added to that of the food, of course).Since energy shortages will cause unemployment in many sectors of the economy, there will be idle hands to do the manual work that will become necessary. From an energy-saving standpoint, it would make far more sense to order by phone and have a single truck deliver food to many homes, than for a member of each home to drive an automobile, round-trip, to pick up a one-family food supply. To be sure, it will not all be retrogression. Even assuming that Earth is in a desperate battle of survival through a crisis of still rising population and dwindling energy reserves, there should still continue to be technological advances in those directions that don’’t depend on wasteful bulk use of energy. There will be continuing advances in the direction of "sophistication", in other words. According to the author, deficiency of food inevitably leads to
______, the two parties will have the same amount of luck to win the election.
某房地产公司计划在北京开发某住宅项目，采用公开招标的形式，有A、B、C、D、E、F6家施工单位领取了招标文件。本工程招标文件规定：2009年1.0月20日下午17：30为投标文件接收终止时间。在提交投标文件的同时，需投标单位提供投标保证金20万元。 在2009年10月20日，A、B、C、D、F5家投标单位在下午17：30前将投标文件送达，E单位在次日上午8：00送达。各单位均按招标文件的规定提供了投标保证金。 在10月20日上午10：25时，B单位向招标人递交了一份投标价格下降5%的书面说明。 开标时，由招标人检查投标文件的密封情况，确认无误后，由工作人员当众拆封，并宣读了 A、B、C、D、F承包商的名称、投标价格、工期和其他主要内容。 在开标过程中，招标人发现C单位的标袋密封处仅有投标单位公章，没有法定代表人印章或签字。 评标委员会委员由招标人直接确定，共有4人组成，其中招标人代表2人，经济专家1人，技术专家1人。 招标人委托评标委员会确定中标人，经过综合评定，评标委员会确定A单位为中标单位。 问题： B单位向招标人递交的书面说明是否有效
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