The fish move their bodies up and down like waves—driven by motors—and use fins and a tail to change direction.It is hoped they will travel at speeds of up to half a metre per second.

　　Working models could be available within 18 months.Different sensors will be fitted to hunt for different pollutants.The data could be used to build a “real time” 3D map of areas of pollution in the water, allowing operators to determine the best way to clean up the area.

　　The fish will initially be used in ports to monitor leaks from large ships, but Dr Gu said the same system could be used in the Thames.Researchers hope the robotic fish will be able to spend up to 24 hours in the water before needing to be recharged.

　　()1.The purpose of the robotic fish project is to ________.

　　A.find out whether inbuilt GPS systems are useful

　　B.find new ways to monitor water waste

　　C.prove that robotic fish can be sent into the Thames

　　D.test the speed of the robotic fish

　　A. change direction immediately

　　D.The robotic fish cannot change direction in water.

　　()5.The passage mainly tells us about ________.

　　A.the robotic fish to smell out pollutants

　　B．a ￡2.5 million EU­funded project

　　C.researchers working on robotic fish

　　D．a 3D pollution map of the Thames

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