Later next year, Beijing will start the country's first driverless (无人驾驶) subway  trains. The Yanfang Line-connecting part of Fangshan district to the city center-will be the first to try out driverless technology.
The Beijing public transportation authority says the new trains will make the metro system better. They will have an upgraded (升级的 ) operating system. They will reach 80km per hour and carry more than l ,200 passengers.
The development of driverless technology is opening up in other areas of transport. Driverless cars have long been a dream for many. And in the past few years，innovation(创新) has speeded up. Big car companies，including Volkswagon and Toyota, are competing with other companies, such as Google.
But with no tracks(轨道)to run on，how will driverless cars be safe? The technology that is used is made up of many sensors (传感器) ,including radar(雷达) and GPS. This gives the car an exact position in the world，as well as what' s around it. It also allows the car to see moving Objects，too，like other cars and people.
Pilot-free planes have also become a hot technology topic. Yet while these types of technology are seen as better and safer，they do have disadvantages. Automation(自动化) means these types of transport will heavily rely on computers. Just like humans，they make mistakes-although less often.
And like much1 of technology，it makes many workers lose their jobs. What will happen to the future bus drivers and pilots？
Which of the following about the Yanfang Line trains is NOT true?

A．There will be no driver on the trains.

B．They’ll have an upgraded operating system.

C．The speed will be at least 80 km per hour.

D．They’ll carry more than 1,200 passengers.

What is the main idea of the third paragraph?

A．Driverless technology is a hot topic.

B．Driverless technology has been developed well.

C．Big car companies are working together to make innovation

D．Big car companies are competing with each other.

What does the underlined word This refer to(指代) in the fourth paragraph?

A．The sensor.	B．The technology.
C．The radar.	D．The CPS.

What can we get from the passage?

A．pilot-free planes are much safer than driverless cars.

B．Automation makes transport more difficult to deal with.

C．Driverless technology has it’s disadvantages.

D．Driverless technology will not need workers any more.