二、阅读理解
Scientists in Shanghai are developing a robot “guide dog” that could help blind people. The robot is able to tell the environment. It can also read traffic lights which traditional guide dogs cannot. The robot uses AI to hear voices. It is able to listen to and speak with a blind owner.
The robot dog is described as about the size of an English bulldog but a little wider than a real dog. It has six legs instead of four because the other two legs make it less likely to fall down and its movements smoother. Professor(教授) Gao Feng, head of the research team, said, “When three legs are lifted, there are still three legs. It is the strongest shape.”
It is said that there are just over 400 traditional guide dogs in China for nearly 20 million blind people. So robot guide dogs are badly needed. However, they cost a lot. “It's a bit like cars. I can make a large number of robot dogs in the same way as cars, so they will become more affordable,” Gao said. He thinks there could be a large market for his robot dogs. “There might be tens of millions of people in the world who need guide dogs,” he added.
() 1. What can the robot dog do?
A. Take photos for the blind.
B. Communicate with the blind.
C. Protect the environment.
D. Change the colours of traffic lights.
() 2. What does the robot dog look like?
A. It has three legs instead of four.
B. It is as big as an English bulldog.
C. It is wider than a real dog with six legs.
D. It is about the size of a French bulldog.
() 3. What does the underlined word “affordable” mean according to the passage?
A. Strong.
B. Cheap.
C. Expensive.
D. Large.
() 4. What's the purpose of this passage?
A. To introduce the robot guide dogs.
B. To call on readers to help the blind.
C. To say something about real dogs.
D. To tell us a great scientist—Gao Feng.