Many teachers believe that hands-on experience is the 【小题1】(good) way to learn. A group of students in the United States are putting that belief to the test. They 【小题2】 (success) designed and built a robot for discovering unexplored mines 【小题3】 the bottom of the sea. Students made the robot 【小题4】(answer) a challenge from the U.S. Department of Defense.

The students recently tested the underwater vehicle 【小题5】(call) PerseusⅡin a 95-meter-long tank of water at the Stevens Institute of Technology.

The robot costs about $15,000 to build. The students use a video game control to direct 【小题6】(it) movements in the tank. What’s more, devices known as Japters 【小题7】 (able) the robot to go up, down and toward its target in the water. Video cameras on the robot send images back to a computer through a 13-meter-long cable. PerseusⅡ, 【小题8】the students worked up to 20 hours a week to design and build, also has 【小题9】 set of lasers (激光), which are used to measure the size of an object.

DeLorme supervised the project from 【小题10】(begin) to end. He says the specialized requirements of robots were demanding.