In the tension-release method of relaxation, one should tense all his or her muscles together after ______.

heroic

dynamic

forceful

ambitious

Because it’ s safer.

Because it’ s cheaper.

Because it’s faster.

Because it’s earlier.

消除水肿

改善消化道症状

防止或延缓肾功能进行性减退

消除蛋白尿

消除血尿

Because of the development of industry.

Because of the pasteurization process.

Because of the new discoveries.

Because of the increasing number of cattle.

effect

summary

conclusion

concept

正确

错误

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.