【題目】Since the 1970s, scientists have been searching for ways to link the brain with computers. Brain-computer 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 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 thoughts.

“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 (頭皮) 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】BCI is a technology that can ________.

A. help the disabled to recover

B. control a person's thoughts

C. help to update computer systems

D. link the human brain with computers

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

A. By talking to the machine.

B. By controlling his muscles.

C. By using his mind.

D. By moving his hand.

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

A. Robotic Vehicles Could Help to Cure Brain Injuries

B. BCI Could Mean More Freedom for the Disabled

C. New Findings About How the Human Brain Works

D. Switzerland, the BCI Research Center

【答案】

【1】D

【2】C

【3】B

【解析】

試題分析: 本文是一則新聞報(bào)道，介紹了Brain-computer interface(BCI)技術(shù)的發(fā)明，原理和對殘疾人帶來的益處。

【1】D 細(xì)節(jié)理解題。根據(jù)文章第一段的scientists have been searching for ways to link the brain with computers. 可知，自20世紀(jì)70年代以來，科學(xué)家一直尋找途徑能將人腦與電腦相連。BCI技術(shù)能幫助殘疾人向機(jī)器發(fā)送指令。故選擇D。

【2】C 細(xì)節(jié)理解題。根據(jù)第三段可知Tavella只是思考動他的左右手就能操作這個(gè)輪椅。甚至當(dāng)他觀察這臺機(jī)器時(shí)就能進(jìn)行交流，也能用他的思想指導(dǎo)機(jī)器人工作。因此機(jī)器人是在人腦的思想支配下進(jìn)行工作的。故C項(xiàng)正確。

【3】B 主旨大意題。本文為科技說明文，開篇點(diǎn)題。介紹科學(xué)家研究的這項(xiàng)新技術(shù)BCI，對殘疾人大有裨益。故正確答案為B項(xiàng)。

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