女，52岁，头痛，前额部局部隆起。查体：前额部扪及一软性肿块。CT显示：额窦扩大，内

某男性铅作业工人，除尿铅增高外，具有神经衰弱症状，口内有金属味，尿ALA升高，可诊断为

A．铅吸收

B．铅中毒

C．轻度铅中毒

D．中度铅中毒

E．重度铅中毒

下列说法中正确的是（）

A.STD的诊断包括病史、体格检查和实验室检测中有一个成立即可确诊

B.抗HIV-1和抗HIV-2的检测中，颗粒凝集试验适用于小批量初检

C.镜检检出革兰阴性双球菌为诊断淋病的金标准

D.临床标本的沙眼衣原体可在敏感细胞中增生形成包涵体，对临床标本作吉姆萨染色和碘染色，如发现有一定数量的具特征性的包涵体即可作出诊断

E.在可疑的受损皮肤上用5%醋酸涂抹或敷贴，3～5分钟有尖锐湿疣的皮肤局部发蓝为阳性

Shopping has always been something of an impulse activity, in which objects that catch our fancy while strolling are immediately bought on a whim. Advertisers and sellers have taken advantage of this fact, carefully positioning inexpensive but attractive items on paths that we are most likely to cross, hoping that our human nature will lead to a greater profit for them. With the dawn of the Internet and its exploding use across the world, the same tactics apply.

Advertisers now place "banners", links to commercial web sites decorated with attractive pictures designed to catch our eyes while browsing the webs, on key web sites with heavy traffic. They pay top dollar for the right, thus creating profits for the hosting web site as well. These actions are performed in the hopes that during the course of our casual and leisurely web surfing, we’ll click on that banner that sparks our interest and thus, in theory, buy the products advertised.

Initial results have been positive. Web sites report a huge inflow of cash, both from the advertisers who tempt customers in with the banners and the hosting web sites, which are paid for allowing the banners to be put in place. As trust and confidence in Internet buying increases and information security is heightened with new technology, the volume of buying is increasing, leading to even greater profits.

The current situation, however, is not quite as optimistic. Just as magazine readers tend to unconsciously ignore advertisements in their favorite periodicals, web browsers are beginning to allow banners to slip their notice as well. Internet users respond to the flood of banners by viewing them as annoyances, a negative image that is hurting sales, since users are now less reluctant to click on those banners, preferring not to support the system that puts them in place. If Internet advertising is to continue to be a viable and profitable business practice, new methods will need to be considered to reinvigorate the industry.

With the recent depression in the technology sector and slowing economy, even new practices may not do the trick. As consumers are saving more and frequenting traditional real estate businesses over their Internet counterparts, the fate of Internet business is called into question. The coming years will be the only reliable indication of whether shopping on the world wide web is the wave of the future or simply an impulse activity whose whim has passed.

The second and third paragraphs are written in order to illustrate（）

A. the policy Internet advertisers design to lure clientele and its outcome

B. the process and mixed consequences of Internet advertising and shopping

C. the biggest splash Internet advertisers have recently made in sales promotions

D. the banners Internet advertisers take advantage of to arouse customers’ interest

一个面向主题的、集成的、稳定的、随时间变化的数据的集合，以用于支持管理决策过程，这是指（）。

目前我国教育在很多方面不同于新中国成立初期的教育，这反映了教育具有（）。

A.永恒性

B.历史性

C.阶级性

D.相对独立性