题目内容：

Scientists will put some robot fish into the sea near Spain this year. These robot fish will help people find out the pollution in the water. If the robot fish are able to finish their work successfully, the team of scientists hopes the fish will be used in rivers, lakes and seas around the world.

The robot fish are about 1.5 meters long. There will be a detector (探测器) in their bodies. It can find the pollution in the water, and then the robot fish will eat part of it.

Unlike other robots, they don’t need to be opearted (操作) by people far away. The robots all have an eight-hour battery (电池). They can “swim” in the sea freely and send back information to peole on the beach. After their batteries run down, they will go back to the beach by themselves.

There are five robot fish altogether (总共). Each costs (花费) about 29,000 dollars. They are part of a three-year project between engineering comany BMT Group and Essex University in southeastern England.

1. The robot fish will help people find out _______ in the water.

A. more fish          B. some people

C. some batteries     D. the pollution

2.What will the robots do if they find the pollution in the water?

A. They will eat part of it.

B. They will stop working.

C. They will tell people where it is

D. They will take it out to the beach.

3.How long can a battery（电池） in their bodies work each time?

A. For five hours.    B. For eight hours.

C. For twelve hours.  D. For one day.

4. The five robot fish cost（花费） about _______ dollars altogether.

A. 14,500           B. 29,000

C. 145,000          D. 1,450,000

5. Which of the following is TRUE?

A. The robot fish can eat anything in the water.

B. The robot fish need to be opearted by people.

C. The robot fish are 1.5 meters long and they look like sharks.

D. The robot fish can go back to the beach when the batteries run down.