engineer

　　at Carnegie Mellon.“The robot can go ahead and，with its sensors，report what it has found and whether it is safe for humans to proceed.”

　　Using robots

　　in

　　rescue

　　operations，though，is problematic.The lasers that guide the robots don’t work in smoky environments so the engineers at Carnegie Mellon have experimented with sonar(声呐)and radar guidance systems，and with some success.

　　Some experts predict that robots in mines will serve much of the same function that they do in the automotive industry.The robots do the most repetitive and dangerous jobs，but won’t get rid of the need for human workers.

　　5．The underlined phrase“throws a fit”in paragraph 3 probably means“______”．

　　A．gets angryB．gets shocked

　　C．becomes confused

　　D．becomes cheerful

　　6．The latest robot is more advanced than Groundhog mainly because______.

　　A．it can map abandoned mines

　　B．it can see in the dark tunnels

　　C．it’s smaller than Groundhog

　　D．it has a real sense of logic

　　7．We can infer from the last paragraph that ______.

　　A．the mining robots will have a very bright future

　　B．robots in the automotive industry must be improved

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