Have you ever heard robot fish? Scientists will put some robot fishes into the seas near Spain. These robot fishes will help people detect (探测) the pollution in the water. If the robot fishes are able to finish their work successfully, the team of scientists hopes to put the fishes into rivers, lakes and seas around the world.

The fishes are about 1.5 meters long and look like carps (鲤鱼). There will be a detector in their bodies. They can find the sources of pollution in the water, and then the robot fishes will eat part of it. Unlike other robots, they don’t need to be controlled by people far away. The robots all have an eight-hour battery. They can “swim” in the sea freely and send back information to people on the beach. After their batteries die, they will return by themselves.

There are five robot fishes altogether now. Each costs about 29,000 dollars. They are part of a three-year project between engineering company BMT Group and Essex University in southeastern England.

“We designed the fishes creatively. We hope the robot fishes can find the changes in the seawater and report back the information,” said Professor Hu of Essex University. His team is developing the fishes.

1.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 they are.

D They will take it out to the beach.

解析：选A。A 细节理解题。根据第二段第三句They can find the sources of pollution in the water, and then the robot fishes will eat part of it.可知，机器鱼会吃掉部分污染物。故选A。

2.How long can a battery in their bodies work each time?

A For five hours

B For eight hours.

C For twelve hours.

D For one day.

解析：选B。B 细节理解题。根据第二段第五句The robots all have an eight-hour battery.可知，电池能维持8小时。故选B。

3.How much do the five robot fishes cost altogether?

A $14, 500.

B $29,000.

C $145,000.

D $1,450, 000.

解析：选C。C 推理判断题。根据第三段第一、二句可知，一个机器鱼耗资29000美元，5个总计29000*5=145000美元。故选C。

4.Which of the following is TRUE? The robot fishes ________.

A can eat anything in the water

B need to be controlled by people

C are 1.5 meters long and they look like sharks

D can go back to the beach when the batteries run down

解析：选D。D 细节理解题。根据第二段最后一句After their batteries die, they will return by themselves.可知，电池电量用完后，机器鱼会回到海滩。故选D。

5.What can we learn from the passage? The robot fishes ________.

A have worked around the world

B can’t take out the trash in the water

C will help people detect the pollution in the water

D help to find other fishes in the rivers, lakes and seas

解析：选C。C 细节理解题。根据第一段第三句These robot fishes will help people detect (探测) the pollution in the water.可知，机器鱼能帮助人们探测水里的污染物。故选C。