2014年12月大学英语四级考试预测试卷7_第6页

　　21、

　　A.To hold a reception party.

　　B.To have a big dinner.

　　C.To congratulate on the couple.

　　D.To shower the couple with rice.

　　22、Passage Three.

　　听材料，回答下列问题

　　A.It resembles the biological virus.

　　B.It works the same way as the human virus.

　　C.It influences the human as the biological viruses do.

　　D.It spreads to people who use the infected computers.

　　23、

　　A.They invade the computer and make it a place for manufacturing.

　　B.They spread throughout the whole system by quickly copying themselves.

　　C.They infect the hard disc and the whole system.

　　D.They spread viruses inside the computer system.

　　24、

　　A.It is a virus that causes great damage.

　　B.It is a virus that once infected the IBM’s computer system.

　　C.It is a virus that carries a Christmas greeting.

　　D.It is a virus that causes no harm to the computer systems.

　　25、

　　A.It can cause no damages at all.

　　B.It can cause damages to the computer systems.

　　C.It can copy your files in computers.

　　D.It can format your hard drive.