患者对医生的问题只能在表面上产生反应，缺乏进一步的联想，该症状为（）。
患者认真讲了一番话，但周围的医生们都不理解他要说什么问题，该症状为（）。

A.思维被夺取

B.思维被洞悉

C.思维贫乏

D.思维散漫

E.思维迟缓

Melissa and LoveLetter made use of the trust that exists between friends or colleagues. Imagine receiving an (16) from a friend who asks you to open it. This is what happens with Melissa and several other similar email (17) . Upon running, such worms usually proceed to send themselves out to email addresses from the victim’s address book, previous emails, web pages (18) .
As administrators seek to block dangerous email attachments through the recognition of well-known (19) , 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 (20) access to your network.

A．cracker

B．user

C．customer

D．client