题目内容：

The possibility of self-driving robot cars has often seemed like a futurist’s dream, years away from coming into reality in the real world. Well, the future is apparently now. The California Department of Motor Vehicles began giving permits in April for companies to test truly self-driving cars on public roads. The state also cleared the way for companies to sell or rent out self-driving cars, and for companies to operate driverless taxi services. California, it should be noted, isn't leading the way here. Companies have been testing their cars in cities across the country. It's hard to predict when driverless cars will be everywhere on our roads. But however long it takes, the technology may change our transportation systems and our cities, for better or for worse, depending on how the transformation is managed.

While much of the debate so far has been focused on the safety of driverless cars, policymakers should be talking more about how self-driving cars can help reduce traffic jams, cut emissions(排放)and offer more convenient and affordable choices to move around. The arrival of driverless cars is a chance to make sure that those cars are environmentally friendly and more shared.

Do we want to copy or even worsen the traffic of today with driverless cars? Imagine a future where most adults own their self-driving cars. They accept long, slow journeys to and from work on crowded highways because they can work, entertain themselves or sleep on the ride. They take their driverless car to a date and set the empty car to circle the building to avoid paying for parking. Instead of walking a few blocks to pick up a child or the dry cleaning, they send the self-driving minibus. The convenience even leads fewer people to take public transport — an unwelcome side effect researchers have already found in ride-hailing(网约车)services. Policymakers should start thinking now about how to make sure the appearance of driverless cars doesn't worsen the transportation system we have today. The coming technological development presents a chance for cities and states to develop transportation systems designed to move more people, and more affordably. The car of the future is coming. We just have to plan for it.

1.What can we learn from the first paragraph?

A. Self-driving cars are not allowed in the real world.

B. Driverless taxies will be seen everywhere on the road in a short term.

C. California is not alone in testing driverless cars.

D. Self-driving technology will definitely benefit transportation system.

2.According to the author, policymakers should pay more attention to __________.

A. how driverless cars can help deal with transportation-related problems

B. how driverless cars can travel safely

C. how driverless cars can travel faster

D. how driverless cars can move more people

3.What is a possible side effect of self-driving cars?

A. Journeys to and from work become longer.

B. More and more people abandon public transportation.

C. There is no place to park them.

D. They may result in traffic jams.

4.What can be a suitable title for the text?

A. Preparing Cities for Robot Cars    B. Future Technology Underway

C. Transportation System in the Future    D. Robot Cars on the Road