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工作记忆具有()双重功能。
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某工程的合同金额为1000万元，合同签订日期为2002年3月，工程于2003年5月交付使用，根据下表所列人工费、材料费构成比例以及有关造价指数，工程实际结算价款为()。
某建设项目有甲、乙、丙、丁四个设计方案，各方案基本数据如下表所示。现已知标准投资回收期为5年，投资效果系数为0.2，则最佳设计方案是()。
A．The people there have a secure future.B．The people there have a glorious past.C．The
By now, how the immune system is affected by stress has been well documented. In one study【B1】newlywed couples, for example, those who showed【B2】behavior. during a 30-minute discussion about marriage problems had lower immune【B3】for 24-hour period following the experiment than people who showed less【B4】behavior. It is not just stress, that can do damage. One researcher thought that【B5】the same cold virus was put【B6】two different noses, the person who is de pressed or anxious or pessimistic would be more likely to develop the cold.
What is it about stress and related emotions【B7】can encourage poor health？ These feelings can cause the【B8】of substances that damage or weaken our immune cells. Negative【B9】can also cause our bodies to produce fewer immune-transmitters that【B10】help fight off disease.
If stress, depression, anger and other negative feelings can make you more likely to get sick, can the【B11】be true？ Will you have a stronger immune【B12】and greater health if you are happier, less stressed, and more【B13】？ Experts believe that the answer is yes. There are studies showing that by【B14】certain mind-body techniques that help reduce stress and improve outlook, cancer patients can live longer.【B15】cancer patients aren't the only ones who can benefit.
Research has found that when patients with chronic pain used【B16】therapies and other behavioral techniques to【B17】discomfort, they reduced their visits to the doctors by 36%. Relaxation produces better health through deep, rhythmic breathing, muscle【B18】, and a slower heart rate. When some of the tension is taken out of the body, the【B19】is taken off the entire system. Relaxation decreases blood pressure, heart rate. That is important because a body that is【B20】tense will eventually give out.
【B1】
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