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  3. You might think twice the next time you spot a fly on the wall! The U. S. Air Force plans to design flying robots disguised or m

You might think twice the next time you spot a fly on the wall! The U. S. Air Force plans to design flying robots disguised or m

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问题     You might think twice the next time you spot a fly on the wall! The U. S. Air Force plans to design flying robots disguised or made to look like insects. The bug-like robots could spy on enemies, including terrorists(恐怖分子)in other countries. They could also【R6】______missions that are too dangerous for humans.
    Today’s flying robots tend to be controlled by pilots on the ground. The new bug robots will fly on their own, using【R7】______that have been preprogrammed. The robots could be as small as bees. The【R8】______machines will have wings that flap like those of real insects. Those will let them fly undetected, or【R9】______, into buildings.
    " There would be a bunch of them sent out in a swarm(一大群)" ,【R10】______researcher Greg Parker.
    He helps direct the research project at the Wright-Patterson Air Force Base in Dayton, Ohio. "If we know there’s a【R11】______of bad guys in a certain building, how do we find out? We think this would help us. "
    The robot will also【R12】______troops by taking pictures and recording video and sounds, including enemies’ voices. The flying machines could【R13】______fire tiny weapons!
    Engineers hope the robots will be airborne by 2030. "More and more military research is going into things that are small," says Loren Thompson, a defense expert【R14】______with the project. "This type of technology is really the【R15】______of the future. "
A. assist B. commands C. direct D. wave E. explains
F. unnoticed G. giant H. involved I. even J. commit
K. instructions L. prevent M. possibility N. conduct O. tiny
【R15】
选项
答案D
解析 此处填名词。选项中wave是最后一个名词，排除法得正确答案D。文中的意思是：这种技术在未来会兴起。“兴起”的动作跟涌来的海浪一样。
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