在正向市场中，牛市套利者要想盈利，则在（）时才能实现。

在我国，下列哪一机关享有关税的豁免权（ ）。

个人贷款客户定位主要包括合作单位定位和贷款银行定位两部分内容。

某地下矿山采用平硐开拓，自流式排水，含水层渗透性较差，有地表水补给，不宜采用垂直井疏干。下列排水疏干方法中，最适宜该矿的是（   ）。

医师义务和权利不包括

患者因胸骨疼痛、发热就诊，血液检查见到幼稚细胞增多，骨髓检查见有核细胞增生活跃，原始细胞占40%。应首先考虑的诊断是(     )

女，22岁。半年前诊断为抑郁症，治疗不佳且伴有癫痫，治疗药物改用舍曲松，癫痫发作次数增加，遂询问医师。医师表示未见过此种情况，上网查询发现过往有一例与患者发病相似，遂将查询结果告知患者及其家属。医生的这种行为体现了(     )

患者 ，女，31岁 。右侧牙痛3天，龈肿，痛剧，伴口臭，口渴，大便3天未行，舌苔黄，脉洪。治疗除取颊车 、下关穴外，还应加

某施工合同中约定设备由施工企业自行采购。施工期间，建设单位要求施工企业购买某品牌设备，理由是该品牌设备的生产商与建设单位有长期合作关系，关于本案中施工企业的行为，正确的是(    )。

投资规划中，进行资产配置的目标是（）。

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.

Dr. Cole made an analysis of the activity of the genes by_____.