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’s 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 passwords and give the (10) access to your network.

9（）

A.names

B.cookies

C.software

D.extensions

“好果汁一定来自好的原料，所以农夫果园在世界各地开辟生产基地，采摘新鲜原料，为您打造天然好喝的果蔬汁。番茄来自新疆吉木萨尔……”。据此回答下题

1．从自然地理角度分析，“农夫果园”番茄汁的市场竞争优势主要来自

[      ]

A．多晴天，日照强，天山雪水浇灌

B．土质肥沃，四季光照充足

C．工业基础相对薄弱，环境清洁

D．冬季寒冷，病虫少，不需使用农药