The robot costs about $15，000 to build. The students use a video game control to direct __6__(it) movements in the tank.

　　What’s more，devices known as Japters __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.

　　Perseus Ⅱ also has __8__ set of lasers (激光)，which are used to measure the size of an object.

　　The robot is the creation of five undergraduate students. For over six months，they worked up __9__ 20 hours a week to design and build Perseus Ⅱ.

　　DeLorme supervised the project from __10__(begin) to end.

　　He says the specialized requirements of robots were demanding.

　　G

　　(2016·安徽省安庆市高三下学期第二次模拟考试)Everyone needs to know how to prevent a fire.It is also important to know what to do when it __1__(break)out.

　　Every year，over 11，000 people __2__(kill)or injured in house fires.These fires could have been avoided.Smokers who are __3__(care)cause about 200 deaths and over 6，000

　　fires.More than of those __4__ die in fires are poisoned or harmed by smoke.

　　If fire happens，do not attempt

　　to fight the fire unless it is small.Try putting out a small fire with water.If __5__ fire has spread or if the flames are more than 20 inches high，shut the door on it.Warn everyone else in the building and tell them to get out.You should leave and dial 911 for the fire department.

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