土壤热导率

People are indulging in an illusion whenever they find themselves explaining at a cocktail (鸡尾酒) party, say, that they are "in computers," or "in telecommunications," or "in electronic funds transfer". The implication is that they are part of the high-tech world. Just between US, they usually aren’t. The researchers who made fundamental breakthroughs in those areas are in a high-tech business. The rest of us are （）of their work. We use computers and other new technology components to develop our products or to organize our affairs. Because we go about this work in teams and projects and other tightly knit working groups(紧密联系在一起的工作小组), we are mostly in the human communication business. Our successes stem from good human interactions by all participants in the effort, and our failures stem from poor human interactions.

The main reason we tend to focus on the（）rather than the human side of the work is not because it’s more （）, but because it’s easier to do. Getting the new disk drive installed is positively trivial compared to figuring out why Horace is in a blue funk (恐惧) or why Susan is dissatisfied with the company after only a few months. Human interactions are complicated and never very crisp (干脆的, 干净利落的) and clean in their effects, but they matter more than any other aspect of the work.

If you find yourself concentrating on the（）rather than the （）, you’re like the vaudeville character (杂耍人物) who loses his keys on a dark street and looks for them on the adjacent street because, as he explains, "The light is better there!".

If you find yourself concentrating on the（）

A．technology

B．sociology

C．physiology

D．astronomy

下列生物实验中所用试剂的作用与细胞壁有关的是：

①制作洋葱根尖分生区装片时，用盐酸处理根尖

②将重组质粒导入大肠杆菌，先用氯化钙溶液处理大肠杆菌

③进行细胞培养，用胰蛋白酶处理动物组织

④进行体细胞杂交时，用纤维素酶和果胶酶处理白菜和甘蓝体细胞

⑤提取叶绿体中的色素时，加入二氧化硅研磨叶片[ ]

A．①②④⑤

B．①②③

C．①②③④⑤

D．①④⑤

世界博览会被誉为“经济、科技与文化界的奥林匹克盛会”。2010年世博会在上海举办，因此上海成为新世纪世人瞩目的城市。请问这座城市在上个世纪曾经

A．在《南京条约》中被开放为通商口岸

B．见证了中美关系的正常化

C．承办了亚太经合组织第九次领导人非正式会议

D．创立上海合作组织，推进新型区域合作

“应付职工薪酬”账户期末贷方余额反映的是( )。

A．本月实际支付的职工薪酬

B．本月尚未支付的职工薪酬

C．本月结转的代扣款项

D．本月多支付的职：正薪酬

A study released a little over a week ago, which found that eldest children end up, on average, with slightly higher IQ’s than younger siblings, was a reminder that the fight for self-definition starts much earlier than freshman year. Families, whatever the relative intelligence of their members, often treat the firstborn as if he or she were the most academic, and the younger siblings fill in other niches: the wild one, the flirt.

These imposed caricatures, in combination with the other labels that accumulate from the sandbox through adolescence, can seem over time like a miserable entourage of identities that can be silenced only with hours of therapy. But there’s another way to see these alternate identities: as challenges that can sharpen psychological skills. In a country where reinvention is considered a birthright, many people seem to treat old identities the way Houdini treated padlocked boxes: something to wriggle free from, before being dragged down. And psychological research suggests that this ability can be a sign of mental resilience, of taking control of your own story rather than being trapped by it.

The late-night bull sessions in college or at backyard barbecues are at some level like out-of-body experiences, allowing a re-coloring of past experience to connect with new acquaintances. A more obvious outlet to expand identity—and one that’s available to those who have not or cannot escape the family and community where they’re known and labeled—is the Internet. Admittedly, a lot of the role-playing on the Internet can have a deviant quality. But researchers have found that many people who play life-simulation games, for example, set up the kind of families they would like to have had, even script alternate versions of their own role in the family or in a peer group.

Decades ago the psychologist Erik Erickson conceived of middle age as a stage of life defined by a tension between stagnation and generativity-a healthy sense of guiding and nourishing the next generation, of helping the community. Ina series of studies, the Northwestern psychologist Dan P. McAdams has found that adults in their 40s and 50s whose lives show this generous quality—who often volunteer, who have a sense of accomplishment—tell very similar stories about how they came to be who they are. Whether they grew up in rural poverty or with views of Central Park, they told their life stories as series of redemptive lessons. When they failed a grade, they found a wonderful tutor, and later made the honor roll; when fired From a good job, they were forced to start their own business.

This similarity in narrative constructions most likely reflects some agency, a willful reshaping and re-imagining of the past that informs the present. These are people who, whether pegged as nerds or rebels or plodders, have taken control of the stories that form their identities.

In conversation, people are often willing to hand out thumbnail descriptions of themselves:" I’m kind of a hermit." Or a talker, a practical joker, a striver, a snob, a morning person. But they are more likely to wince when someone else describes them so authoritatively.

Maybe that’s because they have come too far, shaken off enough old labels already. Like escape artists with a lifetime’s experience slipping through chains, they don’t want or need any additional work. Because while most people can leave their family niches, schoolyard nicknames and high school reputations behind, they don’t ever entirely forget them.

According to the text, one can expand one’s identity（）

A. by finding a way to stay away from one’s family and community

B. by combining late-night bull sessions with backyard barbecues

C. by consulting a professional psycho-therapist

D. by playing various online computer games with new acquaintances