A．It's soft. B．It's made of metal.

　　C．It's very small. D．It looks like an octopus.

　　解析 A　细节理解题。根据第二段最后一句可知，"Octobot"是一种可以用作软体机器人基础部件的微型系统，据此可知，"Octobot"的特点是柔软，故选A项。

　　2．What's the disadvantage of traditional robots?

　　A．They're hard to control.

　　B．They're too heavy to move.

　　C．They can't predict conditions.

　　D．They can't behave well all the time.

　　解析 D　推理判断题。根据第三段可知，传统机器人无法在崎岖的地形上很好地运行，它们还可能对人造成伤害；据此可推知，传统机器人并非总是运行良好，故选D项。

　　3．One of the biggest challenges is to build Octobot's ________.

　　A．silicone body B．complex components

　　C．precise movements D．flexible power source

　　解析 D　细节理解题。根据倒数第二段第二句可知，制造柔韧性强的关键部件仍然面临巨大的挑战，如提供动力的部件，故选D项。

　　4．What's the possible application of "Octobot"？

　　A．Medical research. B．Life rescue.

　　C．Machine operation. D．House cleaning.

　　解析 B　细节理解题。根据最后一段第一句可知，尽管软体机器人开发还处于早期阶段，但它极可能应用于诸如搜索救援和探险等活动，故选B项。

　　B

课标话题 人与社会·科技发展与信息技术创新 体裁 说明文 词　　数 331 难度 You'll probably never go to Mars or sing on the stage with the Rolling Stones. But if virtual reality(VR) ever lives up to its promise, you might be able to do all these things-and many more-without even leaving your home. Unlike real reality, virtual reality means simulating(模仿) bits of our world. Apart from games and entertainment, it's long been used for training airline pilots and surgeons and for helping scientists to figure out complex problems such as the structure of protein molecules(分子). Then how does it work?