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botic 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. 参考答案： D 轮式机器人只是不能搜寻夹缝中的受困者，而且是很难小型化，而不是不可能。----------------------------------------5The passage is mainly about . A.why a robotic caterpillar can find trapped peopleB.how a robotic caterpillar workC.the instruction of the magnetic caterpillarD.how a robotic caterpillar peristalsis 参考答案： A 全文可以看出整篇文章就是在解释为什么磁性机器虫能够找到受困者，介绍它的原理也是为此目的服务的。----------------------------------------1This passage is mainly about . A.the research about the means of spiny spider to entice preyB.how spiny spider entice prey by using conspicuous body colorC.why colors are useful for spiny spider to entice preyD.the difference between spiny spider and other animals? catching prey 参考答案： A 由全文内容可以看出，本文主要关于刺蜘蛛用色彩诱捕猎物的研究。 在动物世界里色彩一般是用来求偶，而spiny spider却是用色彩来诱惑猎物。此文就是围绕专家Hauber的研究来展开的。 1. Bright colors and contrasting patterns should be rare in predators that use traps, since conspicuous body color is scientifically counter?intuitive in stationary predators, says Hauber. 豪伯说，设置陷阱捕食猎物的动物身上很少由鲜艳的色彩和迥异的花纹，因为这种明显的身体颜色与静止的捕食者的本能在可学上是相悖的。 2. Daytime web?building and hunting, along with the web placement and orientation, is consistent with behavior that attracts prey traveling from darker areas to lighter ones. 白天织网和捕食，同时定位和布网，这与吸引猎物从黑暗处到明亮处来的行为是一致的。----------------------------------------2The pu
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