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[单选题]Passage1    Lonely people, it seems, are at greater riskthan the gregarious of developing illnesses associated with chronicinflammation, such as heart disease and certain cancers. A paper published lastyear in the Public Library of Science, Medicine, shows the effect on mortalityof loneliness   is comparable with thatof smoking and drinking after examining the results of 148 previous studies andcontrolled for factors such as age and pre-existing illness.Steven Cole of the University ofCalifornia, Los Angeles, thinks he may know why this is so. He told theAmerican Association for the Advancement of Science meeting in Washington,D.C., about his work studying the expression of genes in lonely people. Dr.Cole harvested samples of white blood cells from both lonely and gregariouspeople. He then analysed the activity of their genes, as measured by theproduction of a substance called messenger RNA. This molecule carries    instructions from the genes telling a cellwhich proteins to make. The level of messenger RNA from most genes was the samein both types of people. There were several dozen genes, however, that wereless active m the lonely, and several dozen others that were more active.Moreover, both the     less active andthe more active gene types came from a small number of functional groups.    Broadly speaking, the genes less active in thelonely were those involved in staving off viral infections. Those that weremore active were involved in protecting against bacteria. Dr. Cole suspectsthis could help explain not only why the lonely are iller, but how, inevolutionary terms, this odd state of affairs has come about.     The crucial bit ofthe puzzle is that viruses have to be caught from another infected individual andthey are usually species-specific. Bacteria, in contrast, often just lurk inthe environment, and  may thrive on manyhosts. The gregarious are therefore at greater risk than the lonely ofcatching  viruses, and Dr. Cole thussuggests that past evolution has created a mechanism which causes white cellsto respond appropriately. Conversely, the lonely are better off ramping uptheir protection  against bacterialinfection, which is a bigger relative risk to them.      What Dr. Cole seemsto have revealed, then, is a mechanism by which social environment reachesinside a person's body and tweaks its genome so that it responds appropriately.It is not that the lonely and the gregarious are genetically different fromeach other. Rather, their genes are regulated differently, according to howsociable an individual is. Dr. Cole thinks this regulation is part of a widermechanism that tunes individuals to the circumstances they find themselves in.What risk may lonely people run according to the first paragraph?

[判断题]紧急阀中部缩孔Ⅲ孔径太小，常用制动可能产生紧急制动。

[单选题]立春过后，大地渐渐从沉睡中苏醒过来。冰雪融化，草木萌发，各种花______开放。再过两个月，燕子______归来。依次填入划横线部分最恰当的一项是（　　）。

[判断题]我国刑法规定了“销售侵权复制品罪”。

[多选题]仲裁条款应包括（）。

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[单选题]以经营决策事件发生的频率来划分决策，新产品开发决策属于下列哪一种？（）

[问答题]商务谈判的基本简述宾主的握手礼仪

[填空题]物理气相沉积法是利用（）将原料加热，使之汽化或形成（），在基体上冷却凝聚成各种形态的材料（如晶须、薄膜、晶粒等）的方法。其中以（）、（）较为常用。

[单选题]现代医学模式指（）