Question

【题目】Since the 1970s，scientists have been searching for ways to link the brain with computers. Braincomputer interface (BCI) technology could help people with disabilities send commands to machines.

Recently，two researchers, Jose Millan and Michele Tavella from the Federal Polytechnic School in Lausanne，Switzerland，demonstrated (展示) a small robotic wheelchair directed by a person’s thoughts.

In the laboratory，Tavella operated the wheelchair just by thinking about moving his left or right hand. He could even talk as he watched the vehicle and guided it with his thougts.

“Our brain has billions of nerve cells.These send signals through the spinal cord(脊髓) to the muscles to give us the ability to move. But spinal cord injuries or other conditions can prevent these weak electrical signals from reaching the muscles，” Tavella says. “Our system allows disabled people to communicate with external world and also to control devices.”

The researchers designed a special cap for the user. This head cover picks up the signals from the scalp (头皮) and sends them to a computer. The computer interprets the signals and commands the motorized wheelchair. The wheelchair also has two cameras that identify objects in its path. They help the computer react to commands from the brain.

Prof.Millan，the team leader，says scientists keep improving the computer software that interprets brain signals and turns them into simple commands. “The practical possibilities that BCI technology offers to disabled people can be grouped in two categories：communication，and controlling devices. One example is this wheelchair.”

He says his team has set two goals. One is testing with real patients，so as to prove that this is a technology they can benefit from. And the other is to guarantee that they can use the technology over long periods of time.

【1】How did Tavella operate the wheelchair in the laboratory?

A．By controlling his muscles.

B．By talking to the machine.

C．By moving his hand.

D．By using his mind.

【2】Which of the following shows the path of the signals described in Paragraph 5?

A．scalp→computer→cap→wheelchair

B．computer→cap→scalp→wheelchair

C．scalp→cap→computer→wheelchair

D．cap→computer→scalp→wheelchair

【3】Which of the following would be the best title for the text?

A．Switzerland，the BCI Research Center

B．New Findings about How the Human Brain Works

C．BCI Could Mean More Freedom for the Disabled

D．Robotic Vehicles Could Help to Cure Brain Injuries

Answer 1

【答案】

【1】D

【2】C

【3】C

【解析】

试题分析：本文是一篇说明文，自从20世纪70年代，科学家们一直都在寻找能够连接大脑和电脑的方法。脑计算机接口（BCI）技术可以帮助残疾人向机器发送指令。

【1】D细节题。第三段第一句 In the laboratory，Tavella operated the wheelchair just by thinking about moving his left or right hand.在实验室，Tavella只是通过思考移动他的左手或者右手来操作轮椅。故选D

【2】C细节题。根据第五段大一：研究人员为用户设计了一个特殊的帽子。这个头罩收集来自头皮的信号并将它们发送到计算机。计算机翻译出信号从而操控轮椅。轮椅也有两个摄像头，识别道路中的对象。他们帮助计算机反应大脑发出的指令。可以判断出顺序是scalp→cap→computer→wheelchair故选C

【3】C主旨分析题。通读全文可知道，这是一篇总分结构的说明文。第一段为中心段Since the 1970s，scientists have been searching for ways to link the brain with computers. Braincomputer interface (BCI) technology could help people with disabilities send commands to machines.自从20世纪70年代，科学家们一直都在寻找能够连接大脑和电脑的方法。脑计算机接口（BCI）技术可以帮助残疾人向机器发送指令。故选C