下列药物结构中存在两个手性中心，临床上使用右旋体的药物是（ ）。

FIDIC《施工合同条件》规定，承包商承担照管工程、货物、承包商文件的责任应至（ ）之日止。

面对犯错的学生，魏老师巧妙构建情境课堂，通过一系列贴近现实的场景与故事，引导学生反思并改正自己的错误，端正品行。下列选项与该案例所体现的教师职业道德要求相符的是（     ）

关于飞行校验的说法，以下正确的是（  ）。

个人住房贷款对合作机构分析的要点不包括（  ）。

依据《工伤保险条例》的规定，下列关于劳动能力鉴定的说法，正确的是（）。

国家工作人员甲为他人"办事"并收受一张银行卡，后将此银行卡交给妻子乙，同时交代乙抓紧"处理"。乙用卡中的300万元购买了股票。乙的行为应认定为（ ）。

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.

Broadly speaking, the genes more active in the lonely _______

属于抗代谢药的是（）

人寿保险是以被保险人的（  ）为保险标的的一种保险。

小儿患病后易趋康复的主要原因是（    ）