31. Which of the following would be a proper title for this passage?
(A) History of the Development of Autonomous Vehicles
(B) Future of European Mass Transit: Driverless and Practical
(C) Autonomous Driving in Silicon Valley
(D) Germany’s Largest Transit Operator
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統計: A(10), B(34), C(4), D(4), E(0) #1719900
統計: A(10), B(34), C(4), D(4), E(0) #1719900