完形填空(一)

第1题

Viruses can worm their way into your computer from a variety of sources that contain viruses. Once viruses get into your (21)business computer, it can wreak havoc (22)a variety of ways that(23)from sending spam emails out to your database of customers to completely(24)your computer. The best way to(25) viruses, worms and other problems from(26)your computer and your online business is to install anti-virus software. Also be sure to keep the antivirus software (27).

Hackers and other unauthorized individuals accessing information on your customers and personal and business financial information can create a myriad of problems including identity theft. In order to prohibit unauthorized sources(28)accessing all of this pertinent information, you should install a firewall, which(29) unauthorized access to your computer. It is just as important to(30)your firewall by updating it regularly to further protect your computer.

21、()

A.offline

B.line

C.online

D.lining

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第2题22、()

A.from

B.in

C.out of

D.for

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第3题23、()

A.change

B.run

C.range

D.vary

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第4题24、()

A.breaking down

B.shooting down

C.closing

D.shutting down

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第5题25、()

A.prevent

B.prohibit

C.forbid

D.limit

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第6题26、()

A.infecting

B.affecting

C.effecting

D.disinfecting

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第7题27、()

A.update

B.up-to-date

C.out-of-date

D.updating

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第8题28、()

A.to

B.against

C.from

D.off

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第9题29、()

A.stops

B.allows

C.protects

D.blocks

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第10题30、()

A.maintain

B.serve

C.install

D.decorate

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