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Cloze 4 It is important to have positive (积极的) feelings in our daily life. Compared 1 some unhappy people, those who are always pleased and relaxed are less likely to suffer from colds, 2 a new study. The researchers from New York University said, “ 3 helps the body prevent diseases.” “It seems that positive feelings may reduce the 4 of illness,” said the chief researcher Sheldon Cohen. In an earlier study, Cohen found that people who were 5 caught colds less often. And they seldom told their doctors that they felt 6 . In this study, Cohen’s team interviewed 193 adults every day for two weeks. In this 7 , the people told researchers about 8 happy or sad feelings that day. Two weeks later, all of them were made to catch colds by doctors, and they had to stay 9 in a room for six days. The results 10 that each in the study was equal (平等的) to fall ill. 11 people who were lively and relaxed said they felt happy during the research. Their illnesses were less serious and lasted for a 12 time. Cohen believes that 13 people have positive feelings, their body may produce a kind of chemical that helps to 14 illnesses. So if you 15 your health, please look on the bright side and make yourself happy all the time.
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在供养的条件下，废水中的氨氮通过生物氧化作用，直接转变为（）的型式。
网卡在安装与设置时应注意哪些问题？
《生活》周刊
长期接触含游离SiO粉尘可引起下列哪种疾病（）。
40年代“后期浪漫派”的代表作家是（）
若要求原水软化后除去硬度、降低碱度，而且不增加含盐量，可采用（）法。
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如图7-2-32所示，RLC串联电路原处于感性状态，今保持频率不变，欲调节可变电容使其进入谐振状态，则电容C值的变化应（ ）。图7-2-32
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