One day a woman got into her car and started driving home after work. Suddenly, she saw a yellow car behind her. The  41  was a man. Wherever she drove, the young man followed her. When she  42  at the traffic lights, the yellow car stopped behind her.

The woman was afraid, so she drove  43  to the police station. She was very  44  when she found the car stopped behind her. At that time, she saw a woman outside the police station. She knew that she was a policewoman because she was wearing a police uniform. She jumped out  45  her car and ran to her. But the young man just smiled and came up to return the purse which was dropped on the street by the woman.

小题1:  A. worker  B. drover C. passenger

小题2:  A. stop       B. stops   C. stopped

小题3: A. quickly     B. easily   C. happily

小题4: A. interested       B. moved C. surprised

小题5:  A. at  B. on         C. of

简述公共投资的范围以及政府开发公共投资的原因。