According to this passage, which is not true about the construction of the robotic caterpillar?

A．A robotic caterpillar is made from a series of rubber capsules tilled with a magnetic flui

B．Iron particles, water, and a detergent-like surfactant form a magnetic flui

C．Each capsule filled with a magnetic fluid is linked to the next by a pair of rubber rod

D．In order to keep stable condition, the caterpillar' s guts are wrapped in a clear, flexible polymer tub

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参考答案

由第三段倒数第二三句“Each capsule is linked to the next by a pair of rubber rods．”可以得出，囊与囊之间由一对橡胶棒连接。故应选c。

1 The meaning of the word “peristalsis” in Paragraph 3 is similar to__________ 。

A．swimming

B．flying

C．crawling

D．walking

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2 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 robot

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

C．The robotic caterpillar only has robber capsules filled with a magnetic flui

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

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3 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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