甲向乙借款100万元。为担保乙的债权，甲以一套价值50万元的房屋作抵押，丙以一套价值50万元的房屋作抵押，丁提供保证。现甲不能偿还到期债务。对此，下列说法正确的是（    ）。

治疗感冒可分别采用辛温解表或辛凉解表，此属于

男，25岁。头外伤昏迷5分钟后清醒，送医院途中再度陷入昏迷，伴呕吐。查体：浅昏迷，双侧瞳孔等大等圆，对光反射迟钝，左侧肢体肌力Ⅳ级，巴宾斯基征阳性。
最可能的诊断是

下列井筒表土施工方法中，适用于厚度不大的不稳定表土层的是（   ）。

生息资产是贷款及投资资产、存放央行款项、存放拆放同业款项等指标的总称。（  ）

淋巴结发育起始的胎龄是

在下列有关支票签发的表述中，符合我国有关法律规定的是( )。

（　　）是贷款发放后能否如数按期收回的关键。

某疫苗公司只生产一种生产工艺较为成熟的疫苗，该疫苗的生产商较多，市场较为分散。公司正在估计投资某新项目应该使用的折现率，下列说法中正确的是（　　）。

恶性程度最髙的肺癌是（）。

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.

What risk may lonely people run according to the first paragraph?