听力原文:M: You can buy this one, which is a demonstrator or we can order one for you and
W: I would prefer a new car, even though the demonstrator is leas expensive.
Q: According to the conversation what is a demonstrator?
(18)
A.A car shown to and driven by customers.
B.A new car.
C.A second hand car for sale.
D.An old car shown to customers.