Melissa and LoveLetter made use of the trust that exists between friends or colleagues. Imagine receiving an (6) from a friend who asks you to open it. This is what happens with Melissa and several other similar email (7) . Upon running, such worms usually proceed to send themselves out to email addresses from the victim’address book, previous emails, web pages (8) .
As administrators seek to block dangerous email attachments through the recognition of well-known (9) , virus writers use other extensions to circumvent such protection. Executable(.exe)files are renamed to .bat and .cmd plus a whole list of other extensions and will still run and successfully infect target users.
Frequently, hackers try to penetrate networks by sending an attachment that looks like a flash movie, which, while displaying some cute animation, simultaneously runs commands in the background to steal your passwouds and give the (10) access to your network.

A．names

B．cookies

C．software

D．extensions

以下选项中，对财务报表分析的描述，正确的是( )。

A．对某一专门课题进行的更加深入具体的调查研究分析

B．是用来评价同行业的经济技术指标

C．是指以资产负债表、损益表和现金流量表为中心所进行的财务分析，它是综合性分析的进一步延伸和补充

D．是对企业所提的财务报表等信息资料所进行的全面系统的总括性地分析与评价的活动