某居民花40万美元建造一所房子的行为是一种消费行为。( )

To compete in today’s fast-paced competitive environment, organizations are increasingly allowing contractors, partners, visitors and guests to access their internal enterprise networks. These users may connect to the network through wired ports in conference rooms or offices, or via wireless access points. In allowing this open access for third parties, LANs become ___72___. Third parties can introduce risk in a variety of ways from connecting with an infected laptop to unauthorized access of network resources to ___73___ activity. For many organizations, however, the operational complexity and costs to ensure safe third party network access have been prohibitive. Fifty-two percent of surveyed CISOs state that they currently use a moat and castle’s security approach, and admit that defenses inside the perimeter are weak. Threats from internal users are also increasingly a cause for security concerns. Employees with malicious intent can launch ___74___ of service attacks or steal ___75___ information by snooping the network. As they access the corporate network, mobile and remote users inadvertently can infect the network with ___76___ and worms acquired from unprotected public networks. Hackers masquerading as internal users can take advantage of weak internal security to gain access to confidential information.

76（）

A．sickness

B．disease

C．germs

D．viruses

建海公司于2008年6月1日以300万元的价格，购入荣发公司10%的股份，作为长期投资，采用成本法核算。荣发公司2008年度实现净利润为600万元，其中包括1～5月份实现的净利润200万元。2009年2月10日荣发公司确定2008年度的利润分配方案为按净利润的50%分派现金股利。建海公司经股东大会决议将其分得的现金股利作为追加投资。荣发公司分派现金股利后，建海公司对荣发公司投资的账面价值为( )万元(不考虑投资减值、相关税费，以及计提盈余公积)。

A．290
B．310
C．320
D．330

中国疆域的沿革不仅呈现出空间范围的变化，更是一个国家形成的历史见证。下列四幅疆域图按时间先后顺序排列正确的是

A．④①②③

B．②①③④

C．①②③④

D．③①②④

社会主义的本质是解放生产力______，消灭剥削______，最终达到______。

铅中毒性贫血的机制是（）

A.卟啉代谢障碍，血管痉挛

B.卟啉代谢障碍，溶血作用

C.溶血作用，血管痉挛

D.卟啉代谢障碍，溶血，血管痉挛

E.都不是