Question

    Nine mini cheetahs robots appeared in the field to show their athletic abilities. The four-legged machines, mini versions of the larger and heavier Cheetah 3, began with a warm-up run across the field.

Though they may be similar to their predecessors(原先的事物), the new four-legged machines are much more advanced. Weighing just nine kilograms, the robots can bend and swing their legs wide, giving them the ability to walk either right-side-up or upside down. They can also travel through uneven places at about twice the speed of an average person’s walking pace and quickly right themselves if kicked to the ground and perform unbelievable 360-degree backflips(后空翻) from a standing position.

Unlike the Cheetah 3, the main robots are built using cheap and easy to find parts. This means that if an arm or a motor breaks, it can be easily replaced. “If you wanted to add another arm, you could just add three or four more of these motors,” said lead developer Benjamin Katz, “You could put these parts together, almost like Legos.”

The team, which currently has ten of the four-legged machines, plans to build additional units in other university robotic labs. “A big part of why we built this robot is that it makes it easy to experiment and just try crazy things, because the robot is very strong and doesn’t break easily, and if it does break, it’s easy and not very expensive to fix, ” said Katz.

He believes that this will enable other engineers to teach the robots different skills. “Eventually, I’m hoping that we could have a robotic dog race through an obstacle course, where each team controls a mini cheetah with different ways, and we can see which strategy is more effective. That’s how you accelerate research,” said Katz.

The team’s reason for developing the robots extends beyond entertainment. They hope that someday packs of “cheetahs” will assist first respondents with search and recovery missions following natural disasters like earthquakes, work alongside firefighters, and even respond to military emergencies.

1.Which of the following best describes the mini robot?

A.Delicate. B.Portable.

C.Complex. D.Flexible.

2.Why are cheap materials used for the mini robot?

A.To test it out in other fields. B.To produce it on a large scale.

C.To make sure it’s easy to repair. D.To make people afford to buy it.

3.What’s the main purpose of making the “cheetahs”?

A.To replace firefighters. B.To entertain people in a way.

C.To bring more convenience to people. D.To help people in dangerous situation.

4.Where is the text most likely from?

A.A diary. B.A magazine.

C.A novel. D.A guide book.

Answer

1.D

2.C

3.D

4.B

【解析】

这是一篇说明文。文章介绍了迷你的猎豹机器人，介绍了它比原先事物的先进性、原材料及修复的便利性以及研发它的原因及前景。

1.细节理解题。由第二段中的Weighing just nine kilograms, the robots can bend and swing their legs wide, giving them the ability to walk either right-side-up or upside down. They can also travel through uneven places at about twice the speed of an average person’s walking pace and quickly right themselves if kicked to the ground and perform unbelievable 360-degree backflips(后空翻) from a standing position（只有九公斤重，这些机器人能弯腿以及大幅度伸腿，这使得他们能够左右转、上下翻。他们能以常人走路两倍的速度通过不平的表面，如果被踢到能很快站起来，还能站着做不可思议的360度后空翻）可知，这一段主要讲迷你猎豹机器人的灵活性。A. Delicate微小的，精美的；B. Portable便携式的，手提的；C. Complex复杂的；D. Flexible灵活的。故选D。

2.细节理解题。由第三段中的This means that if an arm or a motor breaks, it can be easily replaced（这意味着如果一只胳膊或者发动机坏了，它能很容易地被替换）可知，使用便宜的原料制作机器人的原因是让它很容易被修理。故选C。

3.细节理解题。由最后一段的内容“这个小组建机器人的原因并不仅仅是为了娱乐。他们希望某一天大批的机器人能在自然灾害如地震、火灾或者军事紧急情况发生时，第一时间开展救援。”可知，制作猎豹机器人的主要目的是在危险的情况下帮助人们。故选D。

4.推理判断题。本文描述的是一种新型迷你机器人的制造和研究及其用途介绍，极有可能出现在一本杂志上。A. A diary日记；B. A magazine杂志；C. A novel小说；D. A guide book指南。故选B。