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In our daily life, robots are often found to do work that is too dangerous, boring, difficult or dirty. And we often see kids play with toy robots.
________ There are some important characteristics (特征) that a robot must have. These characteristics might help you to know what is and what is not a robot. It will also help you to decide what you will need to build a machine before it can be considered as a robot. A robot has these important characteristics.
First of all, your robot would have to be able to feel the environment around it. Give your robot sensors (传感器): light sensors (eyes), touch sensors (hands), hearing sensors (ears) and so on.
A robot needs to be able to move around its environment. It can move on wheels (轮子), walk on legs or be driven by small engines (发动机). A robot can move either the whole body or just parts of it.
A robot needs to be able to make itself work. Some robots might make it with sunlight, some might with electricity (电).
A robot needs some kind of “smarts”. A programmer is the person who gives the robot its “smarts”. The robot will have to have a certain way to get the program so that it knows what it is and what to do.
1．Choose the best sentence to fill in the blank “________” in Paragraph 2.| A．But what is a robot? | B．Robots are very popular with kids. |
| C．Let me tell you how to build a robot. | D．The robot is very useful these days. |
| A．A robot. | B．A machine. | C．A sensor. | D．An engine. |
| A．To catch. | B．To see. | C．To smell. | D．To hear. |
| A．How to Play with Toy Robots | B．The History of Robots |
| C．Building Your Own Robot at Home | D．Important Characteristics of Robots |
| A．To tell people the use of robots. | B．To describe the sensors of robots. |
| C．To tell what a robot can do in our life. | D．To help people know what a robot is. |
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
