Comparing the robotic caterpillar and the other robots, which of the following is not true?

A．A smooth surface is indispensable to biped robots and wheeled robots.

B．Flying robots are very inconvenient when moving, because they have too many moving parts.

C．The robotic caterpillar only has rubber capsules filled with a magnetic fluid.

D．It's incapable for wheeled robots to locate trapped people because they are impossible to miniaturize.

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答案解析

D【解析】根据文章最后一段“wheeled robots require a smooth surface and are difficult to miniaturize!’，作者说轮式的机器人在救人的时候，需要一个光滑的平面，而且很难稳定。文章并没有说它不能救人。故应选D

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1 The passage is mainly about _______.

A．why a robotic caterpillar can find trapped people

B．how a robotic caterpillar works

C．the instruction of the magnetic caterpillar

D．how a robotic caterpillar crawls

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2 根据下面资料，回答题
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