单选题
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 an'ests have gone from 490 in April—September 2001 to 941 during the same period in 2002.
单选题
The responsibility of the police force of Public Transit is to ______. A. enhance public security B. build up a free transit system C. control the number of riders D. ensure a convenient transit system
【正确答案】
A
【答案解析】[解析] 公共运输警力的职责是什么呢?短文第一段最后一句说“Transit Police programs are designed to enhance safety. increase riders and preserve the quality of our systern's structure.”，由此可知，其职责是增强安全，故答案为A。
单选题
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
【正确答案】
B
【答案解析】[解析] 短文第三段第三句告诉我们“Sometimes officers patrol out of uniform—one could be on your next bus.”，有时巡逻的警官不穿制服，也就不会引人注意了，故答案为B。
单选题
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
【正确答案】
D
【答案解析】[解析] 文章第四段第二句话“Videotapes from these cameras help Transit Police identify and charge criminals.”可见，在公汽上安装摄像头是为了帮助交警侦查犯罪行为，故答案为D。
单选题
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
单选题
The best title for the passage might be ______. A. Police and Security B. New Security Measures C. Transit Police Security Program D. Crime-free Public Transit System