Mr Azad and his ten employees are currently exploring robot designs to examine oil tanks or sewage (污水) pipes.Their biggest challenge is to make the robots user­friendly enough.Mr Azad hopes that the robot could eventually be operated not by engineers but by workers.There will be lots of difficulties they need to overcome in the future.

　　1．What can we learn about Ductbot?

　　A．It is a toy car and popular with children.

　　B．It is designed to move like a snake in the ducts.

　　C．many LEDs are fitted on it to tell its location.

　　D．It is actually a camera to capture dirty scenery.

　　2．The underlined word “it” in Paragraph 2 refers to “________”．

　　A．the cameraB．the conditioning duct

　　C．the LED light

　　D．the dirty scenery

　　3．What can the Ductbot do for us?

　　A．Clean off the dirt in the ducts.

　　B．Control the central conditioning.

　　C．Reduce carbon­dioxide in buildings.

　　D．Protect more animals in city.

　　4. According to the text，EPSCO________.

　　A．has won an international robotics competition

　　B．hired children to clean the dirty ducts in the past

　　C．is the only partner of Robosoft Systems

　　D．specializes in improving people’s health

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