B

Robots are smart. They can help people do some difficult jobs. Some robots do everyday jobs. People use them in many ways. They are different from people and they never g et tired and don’t need sleep. And they can do dangerous and dirty jobs. They also do the job nicely again and again.

People use robots in space, too. It is much cheaper to send an unmanned spacecraft into space than to send a manned one. In space, robots can take photos of things in space, do experiments (实验), send the information back to the earth.

Robots are also useful in hospital. Now with the improvement of science, doctors only need to make a small hole when they operate on a sick person. A tiny robot can be put into the person’s body. Then doctors can watch what it is doing on a computer. The robot deep inside the body listens to the instructions and do as the doctors says.

51.Which of the following  CAN’T a robot do in a space ?

A. Take photos of the things in space      B. Do experiments

C. Send the information back to the earth   D. Talk with the workers

52. How can the doctors know what the robot is doing in the sick person’s body?

A. By talking to the robot       B. By listening to the robot

C. By watching a computer      D. By listening to the radio

53. Which of the following is true according to the passage?

A. Robots are very useful in our life        B. Robots can’t do t he job well again and again

C. Robots can’t work in dangerous places    D. Robots are not very useful in hospital

54.What does the underlined word “tiny” mean ?

A. quite big   B. quite small      C. quite long   D. quite heavy

55. What is the main idea of the passage ?

A. People are not as smart as robots          B. Robots can do many things like people

C. We can only use robots to do everyday jobs

D. Robots can help people in many different ways