A. china
B. bit
C. alive
D. side

A．with the help of a Chevrolet owner
B．with the help of computers
C．by a witness
D．in a car

A．Crime--A Grave Problem in the West
B．Chevrolet--A Make of an Old Car
C．Computer--A Powerful Aid in Fighting Against Crime
D．Police--A Useful Force in the Fight Against Crime