B. She used a USB flash disk infected by virus.

C. She didn’t install anti-virus software in her computer.

第二节

听下面五段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。

听第6段材料，回答第6、7题。

6. How did the woman go sightseeing yesterday？

A. On foot.

B. By bus.

C. By car.

7. What does the man suggest the woman do？

A. Follow him.

B. Walk to the city church.

C. Head to a bus conductor.听第7段材料，回答第8、9题。

8. What do we know about the landlord？

A. He wants to raise the rent.

B. He hasn’t fixed the broken equipment.

C. He has forced the woman to move many times.

9. What does the man offer to do first？

A. Take legal action.

B. Write to the landlord.

C. Help find another apartment.

听第8段材料，回答第10至12题。

10. Where are the speakers？

A. At a restaurant.

B. At the man’s office.

C. At the man’s house.

11. What relation is Mary to the man？