2. 外语
  3. Car accidents kill more than one million people and injure approximately 50 million each year.【C1】______, millions of fish can s

Car accidents kill more than one million people and injure approximately 50 million each year.【C1】______, millions of fish can s

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问题     Car accidents kill more than one million people and injure approximately 50 million each year.【C1】______, millions of fish can swim together in a school with【C2】______no collisions. How do fish do it, and what can they teach us about how to reduce car【C3】______?
    Schooling fish learn about their surroundings through their eyesand a special sense【C4】______called the side line. They use these senses to【C5】______the location of other fish around them, and they follow their own rules.
    Firstly, they always travel side by side. They match the speed of the fish beside them and maintain their distance from them. Secondly, they always draw nearer to fish that are farther away from them. Thirdly, they have their own way【C6】______collisions by changing directions to avoid contact with other fish.
   【C7】______those three behaviors of schooling fish, a car manufacturer designed several tiny robot cars that can travel in a group without colliding.【C8】______eyes, the robots use communication technologies: instead of a side line, they use a laser range finder. The company believes that this technology will help them to create " collision-free" cars and "contribute to an environmentally-【C9】______and traffic-jam-free driving environment."
    " We recreated the behavior of a school of fish by【C10】______latest electronic technologies, " says the principal engineer of the robot-car project. " We, in a motorized world, have a lot to learn from the behavior of a school of fish."
【C4】
选项 A、part
B、tool
C、instrument
D、organ
答案D
解析 这是一道词汇题，考点是名词在上下文中的意思和用法。
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