36. Registration of your bicycle may help you _____________.
A. find your stolen bicycle
B. get your serial number
C. receive free repair services
D. settle conflicts with walkers
37. According to the passage, what bike equipment is a free choice for bicycle riders?
A. Brakes.
B. A helmet.
C. A headlight.
D.A taillight.
38. When you ride a bicycle on the campus, ___________.
A. ride on posted bicycle paths and sidewalks
B. cycle at a speed of over 15 mph
C. put the walkers' right of way first
D. call the police before leaving in a case of accident
39. If you lock your bicycle to a tree on the campus, you could be fined _________.
A. $25
B. $30
C. $35
D. $40
40. What is the passage mainly about?
A. A guide for safe bicycling on campus.
B. Directions for bicycle tour on campus.
C. Regulations of bicycle race on campus.
D. Rules for riding motor vehicles on campus.