It is the vision (设想) of the Public Transit Police Department to achieve a transit system free from crime and disorder. Transit Police programs are designed to enhance safety, increase riders and preserve the quality of our system's structure. Transit has its own police force committed to the safety of its customers and drivers, serving seven counties and 85 cities in the region. There are 23 full-time officers, 146 part-time officers and five administrative (行政的) staff, devoted to one thing: public safety. You've probably seen Transit Police officers patrolling (巡逻) bus routes in cars or on foot. During visits with drivers, Transit Police either ride along or they step on board to greet drivers and passengers. Sometimes officers patrol out of uniform — one could be on your next bus. The fare inspectors on Hiawatha light-rail trains are Transit Police officers. Every new Public Transit bus has an on-board security camera. Videotapes from these cameras help Transit Police identify and charge criminals. Downtown patrols built up in early 2002 have improved the quality of life for downtown residents and transit customers. Ten full-time police officers are assigned to the Minneapolis and St. Paul downtown areas, to ensure public security. Downtown arrests have gone from 490 in April to September 2001 to 941 during the same period in 2002.1. The responsibility of the police force of Public Transit is to ______. A. enhance public securityB. build a free transit systemC. control the number of ridersD. ensure a convenient transit system2. Sometimes patrolling officers on buses are unnoticed because ______. A. they look like fare inspectors B. they don't wear uniform C. they are polite to passengers D. they often take a back seat 3. The purpose of installing a camera inside the new buses is to ______. A. keep a close watch over the road ahead B. take pictures of the passengers on board C. increase the efficiency of the transit system D. help the transit police detect criminals 4. Two figures are mentioned in the last paragraph to indicate ______. A. the Public Transit system's efficiency B. the success of Transit Police program C. the police's emphasis on security of downtown areas D. the worsening security condition of the area 5. The best title for the passage might be ______. A. Police and SecurityB. New Security MeasuresC. Transit Police Security ProgramD. Crime-free Public Transit System