问题
单项选择题
下列颜色中，互为冲突色的是（）。
A.红与黄
B.蓝与紫
C.绿与蓝
D.绿与红
答案
参考答案：D
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下列颜色中，互为冲突色的是（）。
A.红与黄
B.蓝与紫
C.绿与蓝
D.绿与红
参考答案：D
Robots seem very new to most people. But they have a __51__ history. A Greek scientist made the first robot. You may 52 robots in some movies. The robots in the movies are usually stronger, faster and __53__ than people. In real life, most robots are used in factories. They can do lots of dangerous, difficult or__54__ jobs. Some people can’t look __55_ themselves and robots can help them. For example, some people can’t see, and they use a guide dog to help themselves move. But now scientists are__56__ a robot to help them. Robots are also used in American hospitals. At one hospital, a robot 57 meals from the kitchen to the sick people’s rooms. It never loses (迷失)its __58__ because it has a map of the hospital in its computer system(系统).__59__ the future, robots will even work in space. But robots will 60 take the place of(代替)people but only work for people. They can, however, help us in a lot of different ways.
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