听下面5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.What did Bob do?

A.He helped to put out a big fire.

B.He saved a little girl from the fire.

C.He found who set fire to the house.

7.Where is Bob now?

A.At home. B. In his office. C. In a hospital.

　　听第7段材料，回答第8、9题。

8.What is the woman preparing for?

A.A history exam. B. A presentation. C. An interview.

9.What will the speakers probably talk about next?

A.When Columbus discovered America.

B.What the New World stands for.

C. Who discovered America before Columbus.

听第8段材料，回答第10至12题。

10.What's wrong with the man's camera?

A.Its screen always goes black.

B.Its button doesn't work properly.

C.Its battery runs out too quickly.

11.How long has the man had the camera?

A. A week. B. Half a month. C. A month.

12.How does the woman help to solve the man's problem?

A.Ask him to the repair center.

B.Promise to give him a new camera.

C.Send a repairman to the man's home

　　听第9段材料，回答第13至16题。

13.Which subject is Jack best at?